{
  "schema_version": "1.0.0",
  "release_id": "oa-protocol-v5",
  "generated_at": "2026-10-28T18:09:00Z",
  "generation_is_not_source_review": true,
  "counts": {
    "historical": 313,
    "theory": 150,
    "video": 11
  },
  "records": [
    {
      "id": "history:artifact-0009f81bdcaf",
      "legacy_id": "artifact-0009f81bdcaf",
      "kind": "historical",
      "title": "Sphere of Operations of the British Antarctic Expedition",
      "url": "vault.html#artifact-0009f81bdcaf",
      "summary": "Terra Nova expedition operations and final-journey locations.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d4eba2305e5b86cdee83",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0009f81bdcaf",
        "input_record_sha256": "15f478a92b01d98fe2a66f1348880d1202d733e892c5b1f123736597174c1778",
        "original_fields": {
          "title": "Sphere of Operations of the British Antarctic Expedition",
          "date": "1913",
          "institution": "Library of Congress",
          "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "expedition"
          ],
          "description": "Terra Nova expedition operations and final-journey locations.",
          "id": "artifact-0009f81bdcaf",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-0009f81bdcaf",
            "title": "Sphere of Operations of the British Antarctic Expedition",
            "official_source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
            "official_viewer_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
            "direct_image_url": "https://blogs.loc.gov/maps/files/2021/08/Ant4-scaled.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Terra Nova expedition operations and final-journey locations."
        }
      },
      "record_sha256": "e03858102e9c008c6a6d51cf215abd369b52ac638c6d498513b1c028b0b73676"
    },
    {
      "id": "history:artifact-001c2434fb14",
      "legacy_id": "artifact-001c2434fb14",
      "kind": "historical",
      "title": "De revolutionibus orbium coelestium",
      "url": "vault.html#artifact-001c2434fb14",
      "summary": "Contrasts celestial systems, not Antarctic mapping.",
      "claim": null,
      "topics": [
        "Cosmology & celestial charts"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4490eb2b0e6ab7b903a0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1543",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-001c2434fb14",
        "input_record_sha256": "31c23c9eef286771f28c0420ee53c388a2bdc32e54e66236a4f7f58e23fa264c",
        "original_fields": {
          "id": "artifact-001c2434fb14",
          "title": "De revolutionibus orbium coelestium",
          "creator": "Nicolaus Copernicus",
          "date": "1543",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj78",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s78p1.jpg",
          "classification": "Heliocentric celestial model",
          "relevance_and_caution": "Contrasts celestial systems, not Antarctic mapping.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Contrasts celestial systems, not Antarctic mapping.",
          "categories": [
            "Heliocentric celestial model"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-001c2434fb14",
            "title": "De revolutionibus orbium coelestium",
            "official_source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj78",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj78",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s78p1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_group": "celestial-diagrams",
          "browse_topic": "Cosmology & celestial charts",
          "kind": "historical",
          "label": "record",
          "summary": "Contrasts celestial systems, not Antarctic mapping."
        }
      },
      "record_sha256": "cb1f8b8099b4e64535b8f3b12ff4967918ec1f390fdb6588e96b5a8ddc047cc3"
    },
    {
      "id": "history:artifact-01daf268b27a",
      "legacy_id": "artifact-01daf268b27a",
      "kind": "historical",
      "title": "British Graham Land Expedition : Sledge Journeys and Flights from Southern Base, 1936-7; Diagram Relating the Discoveries of Wilkins and Ellsworth to those of the British Graham Land Expedition",
      "url": "vault.html#artifact-01daf268b27a",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:72c44114a265a9f29e7c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September 1940",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-01daf268b27a",
        "input_record_sha256": "ba3a802e86d44d38d8f554967a261d9d578daa3813fd0123de7dcb82a0375013",
        "original_fields": {
          "id": "artifact-01daf268b27a",
          "artifact_id": "AADC map 3716",
          "accession": "AADC map 3716",
          "title": "British Graham Land Expedition : Sledge Journeys and Flights from Southern Base, 1936-7; Diagram Relating the Discoveries of Wilkins and Ellsworth to those of the British Graham Land Expedition",
          "date": "September 1940",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3716",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Sledge_Journeys_Flights_Sthn_Base_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3716",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 1 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "55.5 x 45.3 cm",
          "catalog_notes": "Double sided",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Sledge_Journeys_Flights_Sthn_Base_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "ad8310bcad71650bc8b93f3b6339a035af6b81d4ad8e901d094fba6d99dd07c3"
    },
    {
      "id": "history:artifact-02ade82da423",
      "legacy_id": "artifact-02ade82da423",
      "kind": "historical",
      "title": "Astronomicum Caesareum",
      "url": "vault.html#artifact-02ade82da423",
      "summary": "Earth-centered does not mean flat Earth.",
      "claim": null,
      "topics": [
        "Cosmology & celestial charts"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c4f8a47fd9b567e771eb",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1540",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-02ade82da423",
        "input_record_sha256": "fdf3b175ee747f3e493d7e15689468eab060a27ff907bb5b275b83e22d731a1c",
        "original_fields": {
          "id": "artifact-02ade82da423",
          "title": "Astronomicum Caesareum",
          "creator": "Petrus Apianus",
          "date": "1540",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s76p1.jpg",
          "classification": "Geocentric celestial model",
          "relevance_and_caution": "Earth-centered does not mean flat Earth.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Earth-centered does not mean flat Earth.",
          "categories": [
            "Geocentric celestial model"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-02ade82da423",
            "title": "Astronomicum Caesareum",
            "official_source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s76p1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_group": "celestial-diagrams",
          "browse_topic": "Cosmology & celestial charts",
          "kind": "historical",
          "label": "record",
          "summary": "Earth-centered does not mean flat Earth."
        }
      },
      "record_sha256": "c2ad7dade44eaea7adf5264b4855495da271e563ab9268fb010c32575e4b4450"
    },
    {
      "id": "history:artifact-02be77c49a5f",
      "legacy_id": "artifact-02be77c49a5f",
      "kind": "historical",
      "title": "World map, Book of Curiosities",
      "url": "vault.html#artifact-02be77c49a5f",
      "summary": "Rectangular page geometry is not a physical Earth-shape claim.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e10820f934f96e5fe6b2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Image credited © Bodleian Libraries; reuse permission not verified.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1150–1300 manuscript",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-02be77c49a5f",
        "input_record_sha256": "8610fdc885d6e59c6f00f7bb4b059be1d906a086298d47358475a708d9c03bc8",
        "original_fields": {
          "id": "artifact-02be77c49a5f",
          "title": "World map, Book of Curiosities",
          "creator": "Unknown Egyptian compiler/copyist",
          "date": "1150–1300 manuscript",
          "institution": "Bodleian Libraries",
          "source_url": "https://artsandculture.google.com/asset/world-map-from-the-book-of-curiosities-of-the-sciences-and-marvels-for-the-eyes-bodleian-library-oxford/UAGcU3E7DbRQnA",
          "supplemental_or_image_url": null,
          "classification": "South-up rectangular world map",
          "relevance_and_caution": "Rectangular page geometry is not a physical Earth-shape claim.",
          "rights": "Image credited © Bodleian Libraries; reuse permission not verified.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Rectangular page geometry is not a physical Earth-shape claim.",
          "categories": [
            "South-up rectangular world map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-02be77c49a5f",
            "title": "World map, Book of Curiosities",
            "official_source_url": "https://artsandculture.google.com/asset/world-map-from-the-book-of-curiosities-of-the-sciences-and-marvels-for-the-eyes-bodleian-library-oxford/UAGcU3E7DbRQnA",
            "official_viewer_url": "https://artsandculture.google.com/asset/world-map-from-the-book-of-curiosities-of-the-sciences-and-marvels-for-the-eyes-bodleian-library-oxford/UAGcU3E7DbRQnA",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Image credited © Bodleian Libraries; reuse permission not verified.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Rectangular page geometry is not a physical Earth-shape claim."
        }
      },
      "record_sha256": "5a73775ea32aa79b61f58325380e0150b76f5195b5d31910589d64d0341098c6"
    },
    {
      "id": "history:artifact-035b5facc0fb",
      "legacy_id": "artifact-035b5facc0fb",
      "kind": "historical",
      "title": "Appearance of an iceberg seen at a considerable distance on the morning of 6 March 1841 - about 8'30' a.m.",
      "url": "vault.html#artifact-035b5facc0fb",
      "summary": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAE9983.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:035b5facc0fb592ba800",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "6 March 1841",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-035b5facc0fb",
        "input_record_sha256": "6e81da5b4c22abc5e757aec83fbc88e9871d5e51b91802cf208821b9169f6182",
        "original_fields": {
          "id": "artifact-035b5facc0fb",
          "title": "Appearance of an iceberg seen at a considerable distance on the morning of 6 March 1841 - about 8'30' a.m.",
          "date": "6 March 1841",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124133",
          "accession": "PAE9983",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "historical-artwork",
            "Ross Antarctic expedition"
          ],
          "description": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAE9983.",
          "visual_url": "https://collections.rmg.co.uk/media/332/608/pv9983.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124133",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Appearance of an iceberg seen at a considerable distance on the morning of 6 March 1841 - about 8'30' a.m.",
          "notes": "One cataloged sketch sheet; not evidence for hidden cities or nonstandard geography.",
          "artifact_id": "PAE9983",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/332/608/pv9983.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition artworks",
          "browsing_group": "artworks",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAE9983."
        }
      },
      "record_sha256": "15eb158bf98c299bac2bae3a6a3bef3fee0078867191d3e04fa5bee7782100f7"
    },
    {
      "id": "history:artifact-03c6b0c74a7c",
      "legacy_id": "artifact-03c6b0c74a7c",
      "kind": "historical",
      "title": "BANZARE exploration and survey charts, 1929–1931",
      "url": "vault.html#artifact-03c6b0c74a7c",
      "summary": "Single sheet records Mawson’s coastal survey work and astronomical position fixes.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e59256601759b479e597",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "August 1932",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-03c6b0c74a7c",
        "input_record_sha256": "aee05b5a8577b225d9c2413ab6e9e0a391aca586ef619a8b7e2824d47a38ac66",
        "original_fields": {
          "id": "artifact-03c6b0c74a7c",
          "title": "BANZARE exploration and survey charts, 1929–1931",
          "date": "August 1932",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3705",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Single sheet records Mawson’s coastal survey work and astronomical position fixes.",
          "identifier": "AADC map 3705",
          "creator": "Royal Geographical Society",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 3705",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-03c6b0c74a7c",
            "title": "BANZARE exploration and survey charts, 1929–1931",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3705",
            "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3705",
            "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Explorations_surveys_BANZARE_thumb.jpg",
            "visual_status": "primary-image-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Single sheet records Mawson’s coastal survey work and astronomical position fixes."
        }
      },
      "record_sha256": "ea905cf4e3b20ac8440069c3505935547974d8b3711f9f43e100959cff2d9e8e"
    },
    {
      "id": "history:artifact-03f322607c79",
      "legacy_id": "artifact-03f322607c79",
      "kind": "historical",
      "title": "Babylonian Map of the World",
      "url": "vault.html#artifact-03f322607c79",
      "summary": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:cd5cd2106970bb2fc444",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c. 6th century BCE",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-03f322607c79",
        "input_record_sha256": "53d104f67692d7d837e42b2ffd6a309374c3422f336c0898d15f04032be3ee54",
        "original_fields": {
          "id": "artifact-03f322607c79",
          "title": "Babylonian Map of the World",
          "creator": "Unknown Babylonian scribe",
          "date": "c. 6th century BCE",
          "institution": "British Museum",
          "source_url": "https://www.britishmuseum.org/collection/image/471361001",
          "supplemental_or_image_url": "https://smarthistory.org/map-of-the-world/",
          "classification": "Cosmological geography",
          "relevance_and_caution": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey.",
          "categories": [
            "Cosmological geography"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-03f322607c79",
            "title": "Babylonian Map of the World",
            "official_source_url": "https://www.britishmuseum.org/collection/image/471361001",
            "official_viewer_url": "https://www.britishmuseum.org/collection/image/471361001",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey."
        }
      },
      "record_sha256": "10117280b91303d2386fe18ea9d3e2810e0ac39801e507f3f51012e8c00e6630"
    },
    {
      "id": "history:artifact-04894acf9eca",
      "legacy_id": "artifact-04894acf9eca",
      "kind": "historical",
      "title": "Sheet SR 41-42/3, Church Mountain, Mac. Robertson Land, Australian Antarctic Territory",
      "url": "vault.html#artifact-04894acf9eca",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:54be55856de36c2c6f81",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-80.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 80. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 41-42/3, Church Mountain, Mac. Robertson Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-04894acf9eca"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1970",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-04894acf9eca",
        "input_record_sha256": "9160caca7a5097124a8789fcc30dc31de687396524ffa397bf919b53a9729fd7",
        "original_fields": {
          "id": "artifact-04894acf9eca",
          "artifact_id": "AADC map 80",
          "accession": "AADC map 80",
          "title": "Sheet SR 41-42/3, Church Mountain, Mac. Robertson Land, Australian Antarctic Territory",
          "date": "March 1970",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=80",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SR41-42_3_1970_250k_80_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=80",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "65 x 60.5 cm",
          "catalog_notes": "single sided.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SR41-42_3_1970_250k_80_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-80.jpg",
            "width": 913,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 80. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=80",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "4f161470c652670b610dc9c53098f952514d467783692855f48c2b4c2a31d1ca"
    },
    {
      "id": "history:artifact-04b8c055fe86",
      "legacy_id": "artifact-04b8c055fe86",
      "kind": "historical",
      "title": "Stove, Primus (parts) — Terra Nova expedition",
      "url": "vault.html#artifact-04b8c055fe86",
      "summary": "Individually cataloged stove, primus (parts) associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1614.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:04b8c055fe86f38a200b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-04b8c055fe86",
        "input_record_sha256": "9c89fab0e84284d3df3e3c7fa9264d889d72f0c74e46d5293737f32bcdee18ca",
        "original_fields": {
          "id": "artifact-04b8c055fe86",
          "title": "Stove, Primus (parts) — Terra Nova expedition",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212314",
          "accession": "ZBA1614",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged stove, primus (parts) associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1614.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Stove, Primus (parts)",
          "notes": "Complete cataloged component group counted once; individual parts not counted separately.",
          "artifact_id": "ZBA1614",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged stove, primus (parts) associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1614."
        }
      },
      "record_sha256": "6fedc9fb5dba5096dc96858ae4737d456b51d7dcbd23063fb9186ac270cdba1d"
    },
    {
      "id": "history:artifact-04f14e6d76a9",
      "legacy_id": "artifact-04f14e6d76a9",
      "kind": "historical",
      "title": "Thomson using rangefinder",
      "url": "vault.html#artifact-04f14e6d76a9",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-04f14e6d76a9",
        "input_record_sha256": "61b846a39c0b0df606a36ca0094cdc78f06c75b69d76a7371602387622ae9fcc",
        "original_fields": {
          "title": "Thomson using rangefinder",
          "date": "1902",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/584",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-04f14e6d76a9",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-04f14e6d76a9",
            "title": "Thomson using rangefinder",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0584.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "295ca9cc0716ae6986471d71ed6379792b4b90a6dd942ddb077154ffa09295bd"
    },
    {
      "id": "history:artifact-06092f818e21",
      "legacy_id": "artifact-06092f818e21",
      "kind": "historical",
      "title": "Skiers and Russ",
      "url": "vault.html#artifact-06092f818e21",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-02-22",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-06092f818e21",
        "input_record_sha256": "a2dc8ca6de5114a4d6a62a986fcd17e4a9718ded20e289dbf8764f15ca67b2cc",
        "original_fields": {
          "title": "Skiers and Russ",
          "date": "1903-02-22",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/521",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-06092f818e21",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-06092f818e21",
            "title": "Skiers and Russ",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0521.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "b9019c4b1149327abcbd76034aa996b8455a81964db721f9bcd9410f9d42bd5a"
    },
    {
      "id": "history:artifact-073c713ef654",
      "legacy_id": "artifact-073c713ef654",
      "kind": "historical",
      "title": "Antarctica Reconnaissance Preliminary Base: Australian Quadrant E2-66-12",
      "url": "vault.html#artifact-073c713ef654",
      "summary": "Polar-stereographic preliminary base map of Shackleton Ice Shelf and adjacent coast.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:199d6375b629f76be489",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-3515.jpg",
          "caption": "U.S. Geological Survey; reproduction from Australian Antarctic Data Centre, map 3515 (CC BY 4.0). Historical map reproduction, not evidence for modern hidden-land claims. Small institutional preview; no upscaling. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Antarctica Reconnaissance Preliminary Base: Australian Quadrant E2-66-12",
          "href": "vault.html#artifact-073c713ef654"
        },
        "reuse_notice": "USGS-produced work is in U.S. public domain; AADC identifies publisher as U.S. Geological Survey, no contrary notice in record. AADC reproduction under general map CC BY 4.0 policy.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1956",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-073c713ef654",
        "input_record_sha256": "e5758abcdfa756972d3b827f710068ca6a6979efc72d4a2584e63afb484bcdc1",
        "original_fields": {
          "id": "artifact-073c713ef654",
          "title": "Antarctica Reconnaissance Preliminary Base: Australian Quadrant E2-66-12",
          "date": "1956",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3515",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Polar-stereographic preliminary base map of Shackleton Ice Shelf and adjacent coast.",
          "identifier": "AADC map 3515",
          "creator": "U.S. Geological Survey",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 3515",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-3515.jpg",
            "width": 300,
            "height": 230,
            "credit": "U.S. Geological Survey; reproduction from Australian Antarctic Data Centre, map 3515 (CC BY 4.0).",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3515",
            "rights": "USGS-produced work is in U.S. public domain; AADC identifies publisher as U.S. Geological Survey, no contrary notice in record. AADC reproduction under general map CC BY 4.0 policy.",
            "transform": "Institutional preview downloaded unchanged."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Polar-stereographic preliminary base map of Shackleton Ice Shelf and adjacent coast."
        }
      },
      "record_sha256": "260b33a83455e91c6583950d080d4c17c6883949cab05fd72018c75d9a127a4f"
    },
    {
      "id": "history:artifact-0812ecdb88a9",
      "legacy_id": "artifact-0812ecdb88a9",
      "kind": "historical",
      "title": "Christmas Harbour, Kergeulen Island — Ross Antarctic expedition",
      "url": "vault.html#artifact-0812ecdb88a9",
      "summary": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAF0587.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:0812ecdb88a96007e511",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1840",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0812ecdb88a9",
        "input_record_sha256": "d5352c7f3006f6a7acf9267ce1323f51cf2e461542b0ff933afe313e65fc8c47",
        "original_fields": {
          "id": "artifact-0812ecdb88a9",
          "title": "Christmas Harbour, Kergeulen Island — Ross Antarctic expedition",
          "date": "1840",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124722",
          "accession": "PAF0587",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "historical-artwork",
            "Ross Antarctic expedition"
          ],
          "description": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAF0587.",
          "visual_url": "https://collections.rmg.co.uk/media/341/410/pw0587.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124722",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Christmas Harbour, Kergeulen Island",
          "notes": "",
          "artifact_id": "PAF0587",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/341/410/pw0587.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition artworks",
          "browsing_group": "artworks",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAF0587."
        }
      },
      "record_sha256": "5726b9a30fd79cddf34b3bcc6934008ea61142d5e6af072ead72f8dd2ba50973"
    },
    {
      "id": "history:artifact-09546644b849",
      "legacy_id": "artifact-09546644b849",
      "kind": "historical",
      "title": "\"Ponko\" the Penguin — Terra Nova expedition",
      "url": "vault.html#artifact-09546644b849",
      "summary": "Individually cataloged toy, stuffed associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1691.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:09546644b849faa7af72",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "After 1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-09546644b849",
        "input_record_sha256": "e58c164b110b09dd595842d7d23a03ff83adf649085eb0538ddd893ab3eb34ec",
        "original_fields": {
          "id": "artifact-09546644b849",
          "title": "\"Ponko\" the Penguin — Terra Nova expedition",
          "date": "After 1913",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-233629",
          "accession": "ZBA1691",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-commemoration",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged toy, stuffed associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1691.",
          "visual_url": "https://collections.rmg.co.uk/media/3/289/672/l9494_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-233629",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "\"Ponko\" the Penguin",
          "notes": "Post-expedition toy inspired by Ponting photographs; not equipment taken to Antarctica.",
          "artifact_id": "ZBA1691",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/289/672/l9494_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Commemorative objects",
          "browsing_group": "commemorations",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged toy, stuffed associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1691."
        }
      },
      "record_sha256": "2be7150741008164ccc240a300f6c8f0c591ac28dec286f77bade5e2cae46a1f"
    },
    {
      "id": "history:artifact-09f57ecffc57",
      "legacy_id": "artifact-09f57ecffc57",
      "kind": "historical",
      "title": "Sheet SQ 38-39/14 Tange Promontory, Enderby Land, Australian Antarctic Territory [SQ 37-38/16]",
      "url": "vault.html#artifact-09f57ecffc57",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b7716c4129361c8647c5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-107.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 107. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 38-39/14 Tange Promontory, Enderby Land, Australian Antarctic Territory [SQ 37-38/16]",
          "href": "vault.html#artifact-09f57ecffc57"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "August 1962",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-09f57ecffc57",
        "input_record_sha256": "ce41deb7d27959aaba195b7d66095aebafc7544572e47c359d824e21ee493d00",
        "original_fields": {
          "id": "artifact-09f57ecffc57",
          "artifact_id": "AADC map 107",
          "accession": "AADC map 107",
          "title": "Sheet SQ 38-39/14 Tange Promontory, Enderby Land, Australian Antarctic Territory [SQ 37-38/16]",
          "date": "August 1962",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=107",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_14_1962_250k_107_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=107",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "69.5 x 64.5 cm",
          "catalog_notes": "Tange Promontory SQ 38-39/14 have been numbered according to a map numbering system adopted by Department of National Mapping in 1962 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 37-38/16.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_14_1962_250k_107_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-107.jpg",
            "width": 893,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 107. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=107",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "4ba8258e76af19155dffa0f3f7d6bd583708b98701dd68bcfc4df3b3edf89af9"
    },
    {
      "id": "history:artifact-0a1c7f08d4da",
      "legacy_id": "artifact-0a1c7f08d4da",
      "kind": "historical",
      "title": "Sheet SR 40-41/2 Hansen Mountains, Kemp Land, Australian Antarctic Territory [SR 39-40/4]",
      "url": "vault.html#artifact-0a1c7f08d4da",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d22cd08ff780c4849747",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-84.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 84. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 40-41/2 Hansen Mountains, Kemp Land, Australian Antarctic Territory [SR 39-40/4]",
          "href": "vault.html#artifact-0a1c7f08d4da"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June 1966",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0a1c7f08d4da",
        "input_record_sha256": "24c0497e76058fe58b99b83b45ac9cd74bf64d43fe8de335a897bb75cce541d9",
        "original_fields": {
          "id": "artifact-0a1c7f08d4da",
          "artifact_id": "AADC map 84",
          "accession": "AADC map 84",
          "title": "Sheet SR 40-41/2 Hansen Mountains, Kemp Land, Australian Antarctic Territory [SR 39-40/4]",
          "date": "June 1966",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=84",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SR40-41_2_1966_250k_84_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=84",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "67 x 67 cm",
          "catalog_notes": "Hansen Mountains SQ 40-41/2 have been numbered according to a map numbering system adopted by Department of National Mapping in 1967 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SR 39-40/4.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SR40-41_2_1966_250k_84_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-84.jpg",
            "width": 958,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 84. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=84",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "9332fb0af85e6b1ad23db4ea273e259dbcdaa685311f3366a5c6d8860e6dc9a3"
    },
    {
      "id": "history:artifact-0a22bcff3b65",
      "legacy_id": "artifact-0a22bcff3b65",
      "kind": "historical",
      "title": "Omond meteorological screen",
      "url": "vault.html#artifact-0a22bcff3b65",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-02-19",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0a22bcff3b65",
        "input_record_sha256": "049dbb566ca08e1f8479c9812531f072ef49e74aec8e4806b717ccfa7197657f",
        "original_fields": {
          "title": "Omond meteorological screen",
          "date": "1904-02-19",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/228",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-0a22bcff3b65",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-0a22bcff3b65",
            "title": "Omond meteorological screen",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0228.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "25603ed1998ac6c76b64f39a59ec1e8d4d7986cf029e91a95c32f86606946759"
    },
    {
      "id": "history:artifact-0b16175e00c1",
      "legacy_id": "artifact-0b16175e00c1",
      "kind": "historical",
      "title": "Parka — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-0b16175e00c1",
      "summary": "Individually cataloged parka associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4264.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:0b16175e00c1d2b43343",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0b16175e00c1",
        "input_record_sha256": "dd6a295c9566186e4eba3192379085c944d5a0127aeb545eacc1afaa88cb0342",
        "original_fields": {
          "id": "artifact-0b16175e00c1",
          "title": "Parka — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4019",
          "accession": "AAA4264",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged parka associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4264.",
          "visual_url": "https://collections.rmg.co.uk/media/3/478/128/s3525_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4019",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Parka",
          "notes": "",
          "artifact_id": "AAA4264",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/478/128/s3525_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged parka associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4264."
        }
      },
      "record_sha256": "3123b5d847f14b52bab8ad142d3fc4e1f2fa7934f2ec8a88d8ba46f2df3c6a20"
    },
    {
      "id": "history:artifact-0b9c529be2db",
      "legacy_id": "artifact-0b9c529be2db",
      "kind": "historical",
      "title": "Fitchie Bay camp",
      "url": "vault.html#artifact-0b9c529be2db",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1903-10-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0b9c529be2db",
        "input_record_sha256": "b85d7d7c93e41acc9f7b567c1e1dfa8725dd0d418f0debe45944d77c26937a06",
        "original_fields": {
          "title": "Fitchie Bay camp",
          "date": "circa 1903-10-14",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/300",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-0b9c529be2db",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-0b9c529be2db",
            "title": "Fitchie Bay camp",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0300.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "e6019b8b1a940e78809aa159b6aad4c2b4738920d3e58f1a99da1724805e0c08"
    },
    {
      "id": "history:artifact-0ba166081b8e",
      "legacy_id": "artifact-0ba166081b8e",
      "kind": "historical",
      "title": "Discoveries in Graham Land by Sir Hubert Wilkins, December, 1928.",
      "url": "vault.html#artifact-0ba166081b8e",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 6 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aaa9a7cc016b51489887",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1929",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0ba166081b8e",
        "input_record_sha256": "05819be878b489d5ebc79d4f3776a86dfec5a6434128d191be5056acf171223e",
        "original_fields": {
          "id": "artifact-0ba166081b8e",
          "artifact_id": "AADC map 3702",
          "accession": "AADC map 3702",
          "title": "Discoveries in Graham Land by Sir Hubert Wilkins, December, 1928.",
          "date": "March-1929",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3702",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 6 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 6 250 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 6 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "11868e72252a0a5fb581634c53173d1236d6d50036ae730721c3af8ac38f85a6"
    },
    {
      "id": "history:artifact-0baf52a53a36",
      "legacy_id": "artifact-0baf52a53a36",
      "kind": "historical",
      "title": "J.I. Moore with crabeater seal",
      "url": "vault.html#artifact-0baf52a53a36",
      "summary": "Cataloged expedition photograph: Moore stands next to a seal which is lying on the ice. Harnessed sled dog team sits on the snow behind. Mountains in the far distance.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a1013c83f7edec74ba5d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0baf52a53a36",
        "input_record_sha256": "9e862b1a0db82541c126497c0d1cc6330b4b89ff9f59aeb274ed86533e0121c7",
        "original_fields": {
          "id": "artifact-0baf52a53a36",
          "artifact_id": "P51/8/H196",
          "title": "J.I. Moore with crabeater seal",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Hampton, Wilfred Edward",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-h196",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-h196",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-h196",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore stands next to a seal which is lying on the ice. Harnessed sled dog team sits on the snow behind. Mountains in the far distance.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore stands next to a seal which is lying on the ice. Harnessed sled dog team sits on the snow behind. Mountains in the far distance."
        }
      },
      "record_sha256": "55fd2a7c375fbeba8758afe1d32c808344b7b11d9600ada1c3d5004fa471078c"
    },
    {
      "id": "history:artifact-0eb2ae578d06",
      "legacy_id": "artifact-0eb2ae578d06",
      "kind": "historical",
      "title": "Bellingshausen expedition atlas",
      "url": "vault.html#artifact-0eb2ae578d06",
      "summary": "Atlas records the 1819–1821 southern voyage.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:cc5cb9566f3d19ba197d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1831",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0eb2ae578d06",
        "input_record_sha256": "39e4513695adbc8135c46610aa7ff131aa4f5370df3b36c13fbc7457e2ae8624",
        "original_fields": {
          "title": "Bellingshausen expedition atlas",
          "date": "1831",
          "institution": "Russian Geographical Society",
          "source_url": "https://elib.rgo.ru/handle/123456789/233491",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "atlas",
            "Russian Antarctic expedition"
          ],
          "description": "Atlas records the 1819–1821 southern voyage.",
          "notes": "Catalog title contains apparent1829 transcription error; publication1831 confirmed. Count atlas once.",
          "id": "artifact-0eb2ae578d06",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-0eb2ae578d06",
            "title": "Bellingshausen expedition atlas",
            "official_source_url": "https://elib.rgo.ru/handle/123456789/233491",
            "official_viewer_url": "https://elib.rgo.ru/safe-view/123456789/233491/1/MTgxMDAwNDhfQmVsbGluc2dhdXplbiwgRmFkZGVpIEZhZGRlZXZpY2ggKDE3NzgtMTg1MikuICBBdGwucGRm",
            "direct_image_url": null,
            "visual_status": "primary-viewer-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact original-atlas viewer extracted from RGO record; delivery not tested."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Atlas records the 1819–1821 southern voyage."
        }
      },
      "record_sha256": "e05a76d56b48df9b8c500ee4ce253f2458090f283040491d552f0a5340ce8e2f"
    },
    {
      "id": "history:artifact-101236a3df0c",
      "legacy_id": "artifact-101236a3df0c",
      "kind": "historical",
      "title": "The World, on Mercator’s Projection",
      "url": "vault.html#artifact-101236a3df0c",
      "summary": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:42187362b141b2915b22",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1840",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-101236a3df0c",
        "input_record_sha256": "a1aa2e84333b5c0bf2fe236cc0712ef244cad43417ca389ead928c8befab90bf",
        "original_fields": {
          "id": "artifact-101236a3df0c",
          "title": "The World, on Mercator’s Projection",
          "creator": "A & C Black",
          "date": "1840",
          "institution": "Library of Congress / World Digital Library",
          "source_url": "https://www.loc.gov/resource/gdcwdl.wdl_17585/",
          "supplemental_or_image_url": "https://www.loc.gov/item/2021668708/",
          "classification": "Mercator projection",
          "relevance_and_caution": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Antarctica omitted from historical map",
          "description": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence.",
          "categories": [
            "Mercator projection"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-101236a3df0c",
            "title": "The World, on Mercator’s Projection",
            "official_source_url": "https://www.loc.gov/resource/gdcwdl.wdl_17585/",
            "official_viewer_url": "https://www.loc.gov/resource/gdcwdl.wdl_17585/",
            "direct_image_url": "https://tile.loc.gov/image-services/iiif/service:gdc:gdcwdl:wd:l_:17:58:5:wdl_17585:179/full/pct:100/0/default.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence."
        }
      },
      "record_sha256": "c3414214c47f722fd73147833d7c8c53bea7ffc5a09f6c8ce5b171106b47de8a"
    },
    {
      "id": "history:artifact-114b3e3fd106",
      "legacy_id": "artifact-114b3e3fd106",
      "kind": "historical",
      "title": "Principia philosophiae vortex diagram",
      "url": "vault.html#artifact-114b3e3fd106",
      "summary": "Historical planetary theory, not polar geography.",
      "claim": null,
      "topics": [
        "Cosmology & celestial charts"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d34920cc459b4d416148",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1644",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-114b3e3fd106",
        "input_record_sha256": "fd3b40b857223ba984696f5a0f46d9ef6f2d3246b2d85446d7e719bf469e50fb",
        "original_fields": {
          "id": "artifact-114b3e3fd106",
          "title": "Principia philosophiae vortex diagram",
          "creator": "René Descartes",
          "date": "1644",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj73",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s73.jpg",
          "classification": "Mechanical cosmology",
          "relevance_and_caution": "Historical planetary theory, not polar geography.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Historical planetary theory, not polar geography.",
          "categories": [
            "Mechanical cosmology"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-114b3e3fd106",
            "title": "Principia philosophiae vortex diagram",
            "official_source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj73",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj73",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s73.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_group": "celestial-diagrams",
          "browse_topic": "Cosmology & celestial charts",
          "kind": "historical",
          "label": "record",
          "summary": "Historical planetary theory, not polar geography."
        }
      },
      "record_sha256": "bd335c1691ee3e903cc6fc51028e14b872cea8b8a17f52449bdd9807c2e70bbc"
    },
    {
      "id": "history:artifact-11a6e51e04f7",
      "legacy_id": "artifact-11a6e51e04f7",
      "kind": "historical",
      "title": "Oronce Fine: Nova et integra universi orbis descriptio",
      "url": "vault.html#artifact-11a6e51e04f7",
      "summary": "Fine’s double-heart world map, distinct from the 1534 single-heart map already in the collection. Its conjectural southern land is not a verified Antarctic survey.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:11a6e51e04f7c02c49b1",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Specific scan reuse is not cleared; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1531 signature; [1532] cataloged impression",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-11a6e51e04f7",
        "input_record_sha256": "edc389717e9dacd596dd86fa13798abcc76feeca81533b0b7422f33892fbb974",
        "original_fields": {
          "id": "artifact-11a6e51e04f7",
          "reference_id": "h-fine",
          "title": "Oronce Fine: Nova et integra universi orbis descriptio",
          "date": "1531 signature; [1532] cataloged impression",
          "institution": "Bibliothèque nationale de France",
          "source_url": "https://catalogue.bnf.fr/ark:/12148/cb40699514m",
          "accession": "GE D-6440 (RES)",
          "categories": [
            "historical-map",
            "world-map"
          ],
          "description": "Fine’s double-heart world map, distinct from the 1534 single-heart map already in the collection. Its conjectural southern land is not a verified Antarctic survey.",
          "rights": "Specific scan reuse is not cleared; external viewer only.",
          "embed_allowed": false,
          "official_viewer_url": "https://gallica.bnf.fr/ark:/12148/btv1b55005237j",
          "direct_image_url": null,
          "edition_note": "Signature/design date1531; this BnF impression is cataloged [1532].",
          "provenance": "Lead in user-supplied Claude HIST array; metadata independently checked against primary repositories during prior primary-source audit in this research thread; do not import supplied claims or rights wholesale.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "kind": "historical",
          "label": "record",
          "summary": "Fine’s double-heart world map, distinct from the 1534 single-heart map already in the collection. Its conjectural southern land is not a verified Antarctic survey."
        }
      },
      "record_sha256": "2a48eaa848cd38af35e775743e5e4d52526e8683b6fbf5a9d0480c345d8ed700"
    },
    {
      "id": "history:artifact-1202893c6734",
      "legacy_id": "artifact-1202893c6734",
      "kind": "historical",
      "title": "Elephant Island : From a survey by the Joint Services Expedition, December 1970.",
      "url": "vault.html#artifact-1202893c6734",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 132 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d23f40338b568ac3a35f",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September 1972",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1202893c6734",
        "input_record_sha256": "d263f91da0481bc9ec4a2de6b718b5750b067cf3982ca06631fdc404b397bd47",
        "original_fields": {
          "id": "artifact-1202893c6734",
          "artifact_id": "AADC map 3722",
          "accession": "AADC map 3722",
          "title": "Elephant Island : From a survey by the Joint Services Expedition, December 1970.",
          "date": "September 1972",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3722",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 132 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Elephant_Island_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3722",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 132 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "24.8 x 40.5 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Elephant_Island_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 132 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "b7215b93acb1ae7745ee541b17866690d42bf128656f6bc408904577ee61ef03"
    },
    {
      "id": "history:artifact-12148f17603a",
      "legacy_id": "artifact-12148f17603a",
      "kind": "historical",
      "title": "V.D. Carse taking rations to ship August 3, 1935",
      "url": "vault.html#artifact-12148f17603a",
      "summary": "Cataloged expedition photograph: Carse pushes a sledge laden with barrels and boxes in front of an ice wall.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e0bad2bfe7e3c6a04db8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-12148f17603a",
        "input_record_sha256": "4d0b5630dd11fa45a190ca8e7bf8ee9f304271744a8c19fb527552b042b4be05",
        "original_fields": {
          "id": "artifact-12148f17603a",
          "artifact_id": "P51/8/F120",
          "title": "V.D. Carse taking rations to ship August 3, 1935",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f120",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f120",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f120",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Carse pushes a sledge laden with barrels and boxes in front of an ice wall.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Carse pushes a sledge laden with barrels and boxes in front of an ice wall."
        }
      },
      "record_sha256": "b428b9b122102340a7199ffb59b5c29db69a4c803c4cfdfd14ed33f69746ea23"
    },
    {
      "id": "history:artifact-12260709843c",
      "legacy_id": "artifact-12260709843c",
      "kind": "historical",
      "title": "The return of the Western Geological Party. F. Debenham, T.Griffith-Taylor, T. Gran and PO Forde",
      "url": "vault.html#artifact-12260709843c",
      "summary": "Cataloged expedition photograph: Portrait of Debenham, Griffith Taylor, Gran and Forde, dishevelled and weather beaten, standing on the deck of the ship ‘Terra Nova’.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c0fe5c3243093cdc29a9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-12260709843c",
        "input_record_sha256": "3389fafa545302d9eda92a74e8ea5b534005a02beeb0cb9ba3dddd78ef89a6bf",
        "original_fields": {
          "id": "artifact-12260709843c",
          "artifact_id": "P2005/5/872",
          "title": "The return of the Western Geological Party. F. Debenham, T.Griffith-Taylor, T. Gran and PO Forde",
          "date": "1912",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-872",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-872",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-872",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Portrait of Debenham, Griffith Taylor, Gran and Forde, dishevelled and weather beaten, standing on the deck of the ship ‘Terra Nova’.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Portrait of Debenham, Griffith Taylor, Gran and Forde, dishevelled and weather beaten, standing on the deck of the ship ‘Terra Nova’."
        }
      },
      "record_sha256": "baf87de2ecf8bdf4ce39c7c809e2bca4b779fc667dca3388742c540ae2e1d8d7"
    },
    {
      "id": "history:artifact-12ad029920bd",
      "legacy_id": "artifact-12ad029920bd",
      "kind": "historical",
      "title": "Belgica tunicate scientific report",
      "url": "vault.html#artifact-12ad029920bd",
      "summary": "Illustrated zoological report documents collected tunicate specimens.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b909041749c3c10ba45b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "BHL record explicitly states NOT_IN_COPYRIGHT.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-12ad029920bd",
        "input_record_sha256": "8f97f2650e20f6940218a626d228f06e62d3bcfe2e3604dfd3d25f1bb1d704f3",
        "original_fields": {
          "title": "Belgica tunicate scientific report",
          "date": "1913",
          "institution": "MBLWHOI Library via Biodiversity Heritage Library",
          "source_url": "https://field.biodiversitylibrary.org/item/18691",
          "rights": "BHL record explicitly states NOT_IN_COPYRIGHT.",
          "categories": [
            "scientific report",
            "Belgica expedition"
          ],
          "description": "Illustrated zoological report documents collected tunicate specimens.",
          "artifact_id": "BHL item 18691",
          "id": "artifact-12ad029920bd",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "reuse-statement-verified",
          "visual_source": {
            "id": "artifact-12ad029920bd",
            "title": "Belgica tunicate scientific report",
            "official_source_url": "https://field.biodiversitylibrary.org/item/18691",
            "official_viewer_url": "https://field.biodiversitylibrary.org/item/18691",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "BHL record explicitly states NOT_IN_COPYRIGHT.",
            "visual_type": "digitized scientific volume",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "BHL digitized-volume viewer supplies page images and PDF/JPEG2000 downloads; exact plate not selected."
          },
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Illustrated zoological report documents collected tunicate specimens."
        }
      },
      "record_sha256": "74f4a503dc01d6ec52a6682f45d890b6dfde1eb6942dc3341372939939e8a7b6"
    },
    {
      "id": "history:artifact-12f78f5bd8d5",
      "legacy_id": "artifact-12f78f5bd8d5",
      "kind": "historical",
      "title": "Karta Mira, sheet 234",
      "url": "vault.html#artifact-12f78f5bd8d5",
      "summary": "Soviet Antarctic plateau mapping.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1972",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-12f78f5bd8d5",
        "input_record_sha256": "64bde6617e8f10d892371412a3ac3007530e0c033b849a5108f0ee0b97801aaf",
        "original_fields": {
          "title": "Karta Mira, sheet 234",
          "date": "1972",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Soviet Antarctic plateau mapping.",
          "identifier": "Maps 920.(494.)",
          "id": "artifact-12f78f5bd8d5",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 920.(494.)",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-12f78f5bd8d5",
            "title": "Karta Mira, sheet 234",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/385311b243adcea4d65c2ac7c602980626e0f35c-336x400.jpg/karta-mira-1-2,500,000-sheet-234,-1972.-bl-maps-920.(494.).jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Soviet Antarctic plateau mapping."
        }
      },
      "record_sha256": "b3f965cfd44ee76fef79d165ff2ff76e63991acdc760194ee4686d9550216ad8"
    },
    {
      "id": "history:artifact-135541ab15b2",
      "legacy_id": "artifact-135541ab15b2",
      "kind": "historical",
      "title": "Packing a sledge at top of moraine for trip to Shackleton’s. Feb. 11th 1911.",
      "url": "vault.html#artifact-135541ab15b2",
      "summary": "Cataloged expedition photograph: Three expedition members secure bags, bundles and boxes to a sledge. Another sits on a rock at the front of the sledge fixing a rucksac. Sea in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6b320137278a1de8f7b5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "11.2.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-135541ab15b2",
        "input_record_sha256": "37b14ac1d7894d806359793bc7e2b7e0333da4b9b257cbfe24887829a486e63f",
        "original_fields": {
          "id": "artifact-135541ab15b2",
          "artifact_id": "P2005/5/243",
          "title": "Packing a sledge at top of moraine for trip to Shackleton’s. Feb. 11th 1911.",
          "date": "11.2.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-243",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-243",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-243",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Three expedition members secure bags, bundles and boxes to a sledge. Another sits on a rock at the front of the sledge fixing a rucksac. Sea in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Three expedition members secure bags, bundles and boxes to a sledge. Another sits on a rock at the front of the sledge fixing a rucksac. Sea in background."
        }
      },
      "record_sha256": "de42d0481ab58fd2e7eff22c685562d158296365935f9d1f04f34589746017ff"
    },
    {
      "id": "history:artifact-138ade077ff0",
      "legacy_id": "artifact-138ade077ff0",
      "kind": "historical",
      "title": "Sheets SQ 40-41/16 & Part SR 40-41/4 Mount Henderson & Anniversary Nunataks, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/14]",
      "url": "vault.html#artifact-138ade077ff0",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:3cd55dd626d9d1d97331",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-94.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 94. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 40-41/16 & Part SR 40-41/4 Mount Henderson & Anniversary Nunataks, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/14]",
          "href": "vault.html#artifact-138ade077ff0"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1967",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-138ade077ff0",
        "input_record_sha256": "6d94c7443144b98e1322db18bb9f55eae7bb6cd3f95b3a6bb87fdee09f960bbd",
        "original_fields": {
          "id": "artifact-138ade077ff0",
          "artifact_id": "AADC map 94",
          "accession": "AADC map 94",
          "title": "Sheets SQ 40-41/16 & Part SR 40-41/4 Mount Henderson & Anniversary Nunataks, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/14]",
          "date": "March-1967",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=94",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-94.jpg",
            "width": 788,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 94. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=94",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "51c927e14c3b8a337244ba0f8ae3465a10911eae6f67fd4d90044083ee1ea89d"
    },
    {
      "id": "history:artifact-146c9e5e14cf",
      "legacy_id": "artifact-146c9e5e14cf",
      "kind": "historical",
      "title": "Scotia homecoming",
      "url": "vault.html#artifact-146c9e5e14cf",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-07-21",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-146c9e5e14cf",
        "input_record_sha256": "80496107752368b42748e413e5dafa567ccb924316ca1c056f9e32b91462bd0c",
        "original_fields": {
          "title": "Scotia homecoming",
          "date": "1904-07-21",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/714",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-146c9e5e14cf",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-146c9e5e14cf",
            "title": "Scotia homecoming",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0714.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "6d893ef033e005f425f2fdd580f9f03ba5a29f6b600ddd7e274fad9b7f154c5a"
    },
    {
      "id": "history:artifact-1588aa624eb9",
      "legacy_id": "artifact-1588aa624eb9",
      "kind": "historical",
      "title": "Map showing track of the S.Y. \"Morning\" to accompany Captain W. Colbecks report on the second Antarctic Relief Expedition 1903-04.",
      "url": "vault.html#artifact-1588aa624eb9",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:85940182831d1f6416a7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1588aa624eb9",
        "input_record_sha256": "e2c981bd2f4c079dcdd9a07e5bda92f7c5ec962551ddf808620ebd7f6071cd35",
        "original_fields": {
          "id": "artifact-1588aa624eb9",
          "artifact_id": "AADC map 3686",
          "accession": "AADC map 3686",
          "title": "Map showing track of the S.Y. \"Morning\" to accompany Captain W. Colbecks report on the second Antarctic Relief Expedition 1903-04.",
          "date": "1904",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3686",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Map_track_S.Y.Morning_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3686",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 15 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "34 x 28.2 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Map_track_S.Y.Morning_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "75ef189690b62874bf0f89c941028c51ac4f80f7ea99e9ace4ecea90e2513948"
    },
    {
      "id": "history:artifact-1694c9ca2503",
      "legacy_id": "artifact-1694c9ca2503",
      "kind": "historical",
      "title": "Evans and Nelson making ice-cave. Jan. 12th 1911.",
      "url": "vault.html#artifact-1694c9ca2503",
      "summary": "Cataloged expedition photograph: Evans and Nelson crouch inside snow cave. They work at the walls with ice-axes, a shovel lays on the floor at the mouth of the cave.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:05ed2704e8becabfd011",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "12.1.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1694c9ca2503",
        "input_record_sha256": "a81ec1ad49e813d510cfca18ca12db425c7d29aeca9211007c2a766bdefe51a2",
        "original_fields": {
          "id": "artifact-1694c9ca2503",
          "artifact_id": "P2005/5/172",
          "title": "Evans and Nelson making ice-cave. Jan. 12th 1911.",
          "date": "12.1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-172",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-172",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-172",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Evans and Nelson crouch inside snow cave. They work at the walls with ice-axes, a shovel lays on the floor at the mouth of the cave.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Evans and Nelson crouch inside snow cave. They work at the walls with ice-axes, a shovel lays on the floor at the mouth of the cave."
        }
      },
      "record_sha256": "7911ac75159fb7d4fd8bc65ae37c48d743a9121f32ed4bd5a726baf46784452c"
    },
    {
      "id": "history:artifact-16ca9b6eed4b",
      "legacy_id": "artifact-16ca9b6eed4b",
      "kind": "historical",
      "title": "Ski adaptations for Finneskos",
      "url": "vault.html#artifact-16ca9b6eed4b",
      "summary": "Cataloged expedition photograph: Fur boots in ski bindings",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d8aa281a7062f52a57bc",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-16ca9b6eed4b",
        "input_record_sha256": "91e771ddbf759e65560eae3317ee8eaeb05186521f64c3bfdcc614483f07a638",
        "original_fields": {
          "id": "artifact-16ca9b6eed4b",
          "artifact_id": "P2005/5/847",
          "title": "Ski adaptations for Finneskos",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-847",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-847",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-847",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Fur boots in ski bindings",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Fur boots in ski bindings"
        }
      },
      "record_sha256": "ce679538432084100ed5d30aa0746e32996bf660e5c3664683fe476e443120a9"
    },
    {
      "id": "history:artifact-196f26ec517a",
      "legacy_id": "artifact-196f26ec517a",
      "kind": "historical",
      "title": "‘Quest’ at quayside, Simonstown, South Africa",
      "url": "vault.html#artifact-196f26ec517a",
      "summary": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. Warehouse stand behind, settlement under a mountain in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a9816ec3afd0164ccc85",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-196f26ec517a",
        "input_record_sha256": "33878da8be9457ad1f6b32e855f8c7b1312a93af721bc6ff3eca607d320bf72e",
        "original_fields": {
          "id": "artifact-196f26ec517a",
          "artifact_id": "P2002/28/354_b",
          "title": "‘Quest’ at quayside, Simonstown, South Africa",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Not identified in consulted record",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-354_b",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-354_b",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-354_b",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "Shackleton-Rowett Antarctic Expedition 1921-22",
            "Shackleton–Rowett expedition"
          ],
          "description": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. Warehouse stand behind, settlement under a mountain in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. Warehouse stand behind, settlement under a mountain in the background."
        }
      },
      "record_sha256": "050a4c534470cdd85c0439e597c764e87d2d243d659620a8b164bffc26a39dd6"
    },
    {
      "id": "history:artifact-1ada3b2d9212",
      "legacy_id": "artifact-1ada3b2d9212",
      "kind": "historical",
      "title": "Sheet SQ 40-41/14 Law Promontory, Kemp Land, Australian Antarctic Territory [SQ 39-40/16]",
      "url": "vault.html#artifact-1ada3b2d9212",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4853b34fb338e946db9b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-86.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 86. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 40-41/14 Law Promontory, Kemp Land, Australian Antarctic Territory [SQ 39-40/16]",
          "href": "vault.html#artifact-1ada3b2d9212"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May 1966",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1ada3b2d9212",
        "input_record_sha256": "b91831083c573a1d3b7fab45257d8a098304ca0f5de076b1ea22c4e37e953a2b",
        "original_fields": {
          "id": "artifact-1ada3b2d9212",
          "artifact_id": "AADC map 86",
          "accession": "AADC map 86",
          "title": "Sheet SQ 40-41/14 Law Promontory, Kemp Land, Australian Antarctic Territory [SQ 39-40/16]",
          "date": "May 1966",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=86",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ40-41_14_1966_250k_86_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=86",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "67 x 67 cm",
          "catalog_notes": "Law Promontory SQ 40-41/14 have been numbered according to a map numbering system adopted by Department of National Mapping in 1967 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/16.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ40-41_14_1966_250k_86_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-86.jpg",
            "width": 958,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 86. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=86",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "a1cbd1ba8593f86db89185e7d32b2451916d6663b58e55df1265419803ec83df"
    },
    {
      "id": "history:artifact-1cea406041b5",
      "legacy_id": "artifact-1cea406041b5",
      "kind": "historical",
      "title": "Men aloft",
      "url": "vault.html#artifact-1cea406041b5",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1cea406041b5",
        "input_record_sha256": "e873e7c85dedd618f0994761f7f23d56d7d97dbd98e68452ac77b56879a09f9d",
        "original_fields": {
          "title": "Men aloft",
          "date": "1902–1904",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/539",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-1cea406041b5",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-1cea406041b5",
            "title": "Men aloft",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0539.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "22b3f976136c7cc03abb521e8eb0afdb8173a4d9c41366f818a924329c287a08"
    },
    {
      "id": "history:artifact-1d36f8b7e2d9",
      "legacy_id": "artifact-1d36f8b7e2d9",
      "kind": "historical",
      "title": "Map of a part of the coastline of Victoria Land",
      "url": "vault.html#artifact-1d36f8b7e2d9",
      "summary": "A separately catalogued expedition or regional map; scale Not Entered. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:73355142abf7c47319bc",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June 1900",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1d36f8b7e2d9",
        "input_record_sha256": "530c0cd906f67a39fc959757db27c87a8087287f10e8ce7dd70d5f276838acd2",
        "original_fields": {
          "id": "artifact-1d36f8b7e2d9",
          "artifact_id": "AADC map 1086",
          "accession": "AADC map 1086",
          "title": "Map of a part of the coastline of Victoria Land",
          "date": "June 1900",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=1086",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale Not Entered. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Victoria_Land_1086_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=1086",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "Not Entered",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "44.5 x 48.5 cm",
          "catalog_notes": "Insets of Camp Ridley, Robertson Bay and location of Victoria Land.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Victoria_Land_1086_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale Not Entered. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "4ba7e9a7c74fdcf7a75e6d31e3c8b9d3672c41329fafbc60d88717b2d28aaecf"
    },
    {
      "id": "history:artifact-1f752ac4119a",
      "legacy_id": "artifact-1f752ac4119a",
      "kind": "historical",
      "title": "World map in genealogical table, MS M.429 fol. 8v",
      "url": "vault.html#artifact-1f752ac4119a",
      "summary": "Three continents assigned to Noah’s sons; sacred history rather than polar observation.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b28eb9494643661365dc",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1220",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1f752ac4119a",
        "input_record_sha256": "ea56d7d03971f9ef767a8605053f2aca3860a7cc381febc7e228079310376e4f",
        "original_fields": {
          "id": "artifact-1f752ac4119a",
          "title": "World map in genealogical table, MS M.429 fol. 8v",
          "creator": "Unknown Spanish illuminator; text after Beatus",
          "date": "1220",
          "institution": "Morgan Library & Museum",
          "source_url": "https://www.themorgan.org/collection/commentary-apocalypse/112348/20",
          "supplemental_or_image_url": null,
          "classification": "Biblical world diagram",
          "relevance_and_caution": "Three continents assigned to Noah’s sons; sacred history rather than polar observation.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Three continents assigned to Noah’s sons; sacred history rather than polar observation.",
          "categories": [
            "Biblical world diagram"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-1f752ac4119a",
            "title": "World map in genealogical table, MS M.429 fol. 8v",
            "official_source_url": "https://www.themorgan.org/collection/commentary-apocalypse/112348/20",
            "official_viewer_url": "https://www.themorgan.org/collection/commentary-apocalypse/112348/20",
            "direct_image_url": "https://www.themorgan.org/sites/default/files/facsimile/112348/112348v_020.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Official folio page identifies1220 manuscript and offers image download. Image endpoint did not load in tool; viewer verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Three continents assigned to Noah’s sons; sacred history rather than polar observation."
        }
      },
      "record_sha256": "b7f0c089cf0cc4888bd8da4eb2d49c7c3b55bbda39ffedd0ed96b572d523e722"
    },
    {
      "id": "history:artifact-1fa31e4512f1",
      "legacy_id": "artifact-1fa31e4512f1",
      "kind": "historical",
      "title": "Saucer as used on Captain Robert Falcon Scott's Antarctic expedition of 1910",
      "url": "vault.html#artifact-1fa31e4512f1",
      "summary": "Individually cataloged saucer associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA5379.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:1fa31e4512f1505fb2db",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1fa31e4512f1",
        "input_record_sha256": "c6ec7fde318d1404d5efa6cf439ee7fb6e395951b14625324822aced677aa186",
        "original_fields": {
          "id": "artifact-1fa31e4512f1",
          "title": "Saucer as used on Captain Robert Falcon Scott's Antarctic expedition of 1910",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-5103",
          "accession": "AAA5379",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged saucer associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA5379.",
          "visual_url": "https://collections.rmg.co.uk/media/3/463/970/rw6098.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-5103",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Saucer as used on Captain Robert Falcon Scott's Antarctic expedition of 1910",
          "notes": "",
          "artifact_id": "AAA5379",
          "asset_status": "source-link-only",
          "visual_status": "verified-primary-image-link; image-endpoint-responded",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/463/970/rw6098.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "http_status": 200,
            "content_type": "image/jpeg"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged saucer associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA5379."
        }
      },
      "record_sha256": "8970ff55a424dd4905c995f27a46fb237b8d9523eb8f4e69ee2824d3cd75b4f8"
    },
    {
      "id": "history:artifact-2027de15d73d",
      "legacy_id": "artifact-2027de15d73d",
      "kind": "historical",
      "title": "Cosmographia world map",
      "url": "vault.html#artifact-2027de15d73d",
      "summary": "Classical geographical knowledge, not Antarctic surveying.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bfd7ebe44c285d6d43ad",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1482",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2027de15d73d",
        "input_record_sha256": "34a693b0d4cb00a1b09443ea689188a4864e216cf3e75ee4155e1f889188a5c5",
        "original_fields": {
          "id": "artifact-2027de15d73d",
          "title": "Cosmographia world map",
          "creator": "Claudius Ptolemy tradition",
          "date": "1482",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s116.jpg",
          "classification": "Ptolemaic cartography",
          "relevance_and_caution": "Classical geographical knowledge, not Antarctic surveying.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Classical geographical knowledge, not Antarctic surveying.",
          "categories": [
            "Ptolemaic cartography"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-2027de15d73d",
            "title": "Cosmographia world map",
            "official_source_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s116.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Classical geographical knowledge, not Antarctic surveying."
        }
      },
      "record_sha256": "ce42c35a1b6a17c28423715d90ccf2fd8707111e64f11c1248b1583765f1a658"
    },
    {
      "id": "history:artifact-203050227049",
      "legacy_id": "artifact-203050227049",
      "kind": "historical",
      "title": "The Course of Antarctic Exploration Between Longitudes 20°W and 110°E.",
      "url": "vault.html#artifact-203050227049",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f32dbb435c324e7060f8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September-1939",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-203050227049",
        "input_record_sha256": "d230854cbacae3b8eef80ef28f31f5abae775e2b6c0cc85fa23d354602a924b3",
        "original_fields": {
          "id": "artifact-203050227049",
          "artifact_id": "AADC map 3715",
          "accession": "AADC map 3715",
          "title": "The Course of Antarctic Exploration Between Longitudes 20°W and 110°E.",
          "date": "September-1939",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3715",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 3 000 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "53ad95f41c6bad9657c90f7d0255dba2fa90de278abfa58728d18a92c419edde"
    },
    {
      "id": "history:artifact-207427ba3761",
      "legacy_id": "artifact-207427ba3761",
      "kind": "historical",
      "title": "Regional Map showing the area covered by the Australasian Antarctic Expedition 1911-14 under Sir Douglas Mawson",
      "url": "vault.html#artifact-207427ba3761",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e640bce2a69b5916edaa",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1914",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-207427ba3761",
        "input_record_sha256": "6af9cf8a02bee7b9bf40c35c45f5767590dd7d14d26065555cdcb758aeb594f8",
        "original_fields": {
          "id": "artifact-207427ba3761",
          "artifact_id": "AADC map 3696",
          "accession": "AADC map 3696",
          "title": "Regional Map showing the area covered by the Australasian Antarctic Expedition 1911-14 under Sir Douglas Mawson",
          "date": "1914",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3696",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/AAE_1911-14_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3696",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 15 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "38 x 39 cm",
          "catalog_notes": "Includes tracks of the \"Aurora\" and most of the deep-sea soundings. Modified conical projection with rectified meridians and errorless parallels 40 deg. and 70 deg.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/AAE_1911-14_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "71735be3382af28bf4e46492fd8d6359014ed553817d1a2c527bff3320656919"
    },
    {
      "id": "history:artifact-20a39105f356",
      "legacy_id": "artifact-20a39105f356",
      "kind": "historical",
      "title": "Apollo 17 Blue Marble exposure",
      "url": "vault.html#artifact-20a39105f356",
      "summary": "Astronaut photograph includes the illuminated Antarctic ice cap.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:877db2ee3bebdcb6e9af",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-20a39105f356.gif",
          "caption": "Actual artifact image; source credit: NASA.",
          "title": "Apollo 17 Blue Marble exposure",
          "href": "vault.html#artifact-20a39105f356"
        },
        "reuse_notice": "NASA informational/editorial reuse guidelines; credit NASA and do not imply endorsement.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1972-12-07",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-20a39105f356",
        "input_record_sha256": "342bc8251b1336e03c9b33ac6f7f5071df86e6e88b08efdec6a20bed05053af5",
        "original_fields": {
          "title": "Apollo 17 Blue Marble exposure",
          "date": "1972-12-07",
          "institution": "NASA",
          "source_url": "https://nssdc.gsfc.nasa.gov/imgcat/html/object_page/a17_h_148_22727.html",
          "rights": "NASA informational/editorial reuse guidelines; credit NASA and do not imply endorsement.",
          "categories": [
            "space photography"
          ],
          "description": "Astronaut photograph includes the illuminated Antarctic ice cap.",
          "artifact_id": "AS17-148-22727",
          "id": "artifact-20a39105f356",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "reuse-statement-verified",
          "visual_source": {
            "id": "artifact-20a39105f356",
            "title": "Apollo 17 Blue Marble exposure",
            "official_source_url": "https://nssdc.gsfc.nasa.gov/imgcat/html/object_page/a17_h_148_22727.html",
            "official_viewer_url": "https://nssdc.gsfc.nasa.gov/imgcat/html/object_page/a17_h_148_22727.html",
            "direct_image_url": "https://nssdc.gsfc.nasa.gov/imgcat/hires/a17_h_148_22727.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "NASA informational/editorial reuse guidelines; credit NASA, do not imply endorsement.",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Astronaut photograph includes the illuminated Antarctic ice cap."
        }
      },
      "record_sha256": "3c60adc51aa6300967dbae09778e4341c58d89f3134a20ad05735262b71f068f"
    },
    {
      "id": "history:artifact-20b2b41fb559",
      "legacy_id": "artifact-20b2b41fb559",
      "kind": "historical",
      "title": "Graham Land Coast : B.G.L.E. September 1935 - February 1936",
      "url": "vault.html#artifact-20b2b41fb559",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 750 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:394f9c8f664bd712e9cd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "April 1938",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-20b2b41fb559",
        "input_record_sha256": "bb136a8ebeba7b4166990075ef1e8b168d6182f2f68c65aae158d6740c5b48a0",
        "original_fields": {
          "id": "artifact-20b2b41fb559",
          "artifact_id": "AADC map 3713",
          "accession": "AADC map 3713",
          "title": "Graham Land Coast : B.G.L.E. September 1935 - February 1936",
          "date": "April 1938",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3713",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 750 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Graham_Land_Coast_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3713",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 750 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "24.6 x 33.3 cm",
          "catalog_notes": "From surveys by A. Stephenson and Lieut. R.E.D. Ryder R.N.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Graham_Land_Coast_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 750 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "82cdd08a162732079114a034a1abcff5cc7b6c43e1daa57efb7eb997333b6f37"
    },
    {
      "id": "history:artifact-22a5da5304de",
      "legacy_id": "artifact-22a5da5304de",
      "kind": "historical",
      "title": "Handcuffs — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-22a5da5304de",
      "summary": "Individually cataloged handcuffs associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4266.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:22a5da5304dec9dc264d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-22a5da5304de",
        "input_record_sha256": "96faa931d6eae72bf99aabd73c78a9e3729e675698899feba4b9df0f8aa0560e",
        "original_fields": {
          "id": "artifact-22a5da5304de",
          "title": "Handcuffs — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4021",
          "accession": "AAA4266",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged handcuffs associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4266.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/327/rw0024.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4021",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Handcuffs",
          "notes": "",
          "artifact_id": "AAA4266",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/327/rw0024.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged handcuffs associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4266."
        }
      },
      "record_sha256": "752e0e315febc5f8c1fd94856a9e0c522a7e6d82f22855906957be836bf19140"
    },
    {
      "id": "history:artifact-252e6e88ee5f",
      "legacy_id": "artifact-252e6e88ee5f",
      "kind": "historical",
      "title": "World map in Théâtre de l’Univers",
      "url": "vault.html#artifact-252e6e88ee5f",
      "summary": "Date the displayed edition 1587, not the atlas's first edition of 1570.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a51a8ba8e22889c939e7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1587 edition",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-252e6e88ee5f",
        "input_record_sha256": "ebe5d696d109b1a2d69afd8adf3835e5c243c4f5934bb73bdfb30421d6c2f25e",
        "original_fields": {
          "id": "artifact-252e6e88ee5f",
          "title": "World map in Théâtre de l’Univers",
          "creator": "Abraham Ortelius",
          "date": "1587 edition",
          "institution": "Library of Congress / World Digital Library",
          "source_url": "https://www.loc.gov/item/2021666800/",
          "supplemental_or_image_url": null,
          "classification": "Atlas world map",
          "relevance_and_caution": "Date the displayed edition 1587, not the atlas's first edition of 1570.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Date the displayed edition 1587, not the atlas's first edition of 1570.",
          "categories": [
            "Atlas world map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-252e6e88ee5f",
            "title": "World map in Théâtre de l’Univers",
            "official_source_url": "https://www.loc.gov/item/2021666800/",
            "official_viewer_url": "https://www.loc.gov/resource/gdcwdl.wdl_08978/?st=gallery",
            "direct_image_url": "https://tile.loc.gov/image-services/iiif/service:gdc:gdcwdl:wd:l_:08:97:8:wdl_08978:img001/full/pct:100/0/default.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Date the displayed edition 1587, not the atlas's first edition of 1570."
        }
      },
      "record_sha256": "9f17907ea5722b647372b4a5f9d3d090673e8accef90d2a875db37ee648bef1f"
    },
    {
      "id": "history:artifact-25bfbc3b6791",
      "legacy_id": "artifact-25bfbc3b6791",
      "kind": "historical",
      "title": "Sekai daisō no zu",
      "url": "vault.html#artifact-25bfbc3b6791",
      "summary": "Heavens and hells contextualize a geographical world.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8338b617a35f295dded8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1830",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-25bfbc3b6791",
        "input_record_sha256": "6e9b8b78890755f7e53014072c4df63cd75280aaca87c04384f28edd5f8edef8",
        "original_fields": {
          "id": "artifact-25bfbc3b6791",
          "title": "Sekai daisō no zu",
          "creator": "Zontō",
          "date": "1830",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s77.jpg",
          "classification": "Buddhist cosmological map",
          "relevance_and_caution": "Heavens and hells contextualize a geographical world.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Heavens and hells contextualize a geographical world.",
          "categories": [
            "Buddhist cosmological map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-25bfbc3b6791",
            "title": "Sekai daisō no zu",
            "official_source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s77.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Heavens and hells contextualize a geographical world."
        }
      },
      "record_sha256": "5e9fd89c0542d2bc0e8686528d9a110f815fe747430ae16a953d8449c50bc6d3"
    },
    {
      "id": "history:artifact-27996b29dfd3",
      "legacy_id": "artifact-27996b29dfd3",
      "kind": "historical",
      "title": "A.A.E. Western Base",
      "url": "vault.html#artifact-27996b29dfd3",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 21, 61cm x 101cm. Harrison Islet. Shackleton Glacier. Queen Mary Land.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-27996b29dfd3",
        "input_record_sha256": "0ed369930e8c4b164f7e7e077f29ad80900ceb7b8cc698c328a3c8b26d329fde",
        "original_fields": {
          "id": "artifact-27996b29dfd3",
          "artifact_id": "SLNSW AAE map 21",
          "accession": "Australasian Antarctic Expedition records, map 21",
          "title": "A.A.E. Western Base",
          "date": "1911-1913",
          "creator": "Dovers, George H. S. Kennedy, Alexander L.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 21, 61cm x 101cm. Harrison Islet. Shackleton Glacier. Queen Mary Land.",
          "visual_url": "http://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3756274",
          "official_viewer_url": "http://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3756274",
          "embed_allowed": false,
          "verification_status": "Inventory item verified; linked legacy scan delivery unverified.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "primary-viewer-link-delivery-unverified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; linked legacy scan delivery unverified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 21, 61cm x 101cm. Harrison Islet. Shackleton Glacier. Queen Mary Land."
        }
      },
      "record_sha256": "39e67a6a565ef00d40964464a888af6278721b11a65a608a8c6126070e637d7f"
    },
    {
      "id": "history:artifact-2884ddbaa3fb",
      "legacy_id": "artifact-2884ddbaa3fb",
      "kind": "historical",
      "title": "Frank Debenham grinding Geological specimens. July 12th 1911",
      "url": "vault.html#artifact-2884ddbaa3fb",
      "summary": "Cataloged expedition photograph: In the interior of the hut, Debenham sits at a trunk, on which lies a flat board. Debenham rubs stones onto the board. Behind is a bench on which stands various scientific equipment. Books and other paraphenalia are stacked on shelves.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:034409f0d2260f9af594",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "7.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2884ddbaa3fb",
        "input_record_sha256": "4f8661ee00b098d70f126da9d579ac738e8ad5bb041e0ee0f4dfd964918108c2",
        "original_fields": {
          "id": "artifact-2884ddbaa3fb",
          "artifact_id": "P2005/5/458",
          "title": "Frank Debenham grinding Geological specimens. July 12th 1911",
          "date": "7.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-458",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-458",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-458",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: In the interior of the hut, Debenham sits at a trunk, on which lies a flat board. Debenham rubs stones onto the board. Behind is a bench on which stands various scientific equipment. Books and other paraphenalia are stacked on shelves.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: In the interior of the hut, Debenham sits at a trunk, on which lies a flat board. Debenham rubs stones onto the board. Behind is a bench on which stands various scientific equipment. Books and other paraphenalia are stacked on shelves."
        }
      },
      "record_sha256": "19e73fd8948253c7e2b6a2f070a5d0d5dc5f07b507738955027ba987bca022ac"
    },
    {
      "id": "history:artifact-2a2b5c091759",
      "legacy_id": "artifact-2a2b5c091759",
      "kind": "historical",
      "title": "British Antarctic Territory : Alexander Island and Charcot Island",
      "url": "vault.html#artifact-2a2b5c091759",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b0a257b53d308eade6f1",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June-1963",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2a2b5c091759",
        "input_record_sha256": "2fa3988ae0442c3dba2ec0b95f24f7fe6e0d25f0177e1c6f8e6b392a8846ebe3",
        "original_fields": {
          "id": "artifact-2a2b5c091759",
          "artifact_id": "AADC map 3719",
          "accession": "AADC map 3719",
          "title": "British Antarctic Territory : Alexander Island and Charcot Island",
          "date": "June-1963",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3719",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 1 000 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "76a422653e3af45ff4da2f4e305b19312f0dd2a0ad246d50f36afe9d70e07cdc"
    },
    {
      "id": "history:artifact-2ac1bffbefc6",
      "legacy_id": "artifact-2ac1bffbefc6",
      "kind": "historical",
      "title": "Southern icefoot, Cape Adare, April 1911",
      "url": "vault.html#artifact-2ac1bffbefc6",
      "summary": "Cataloged expedition photograph: View along coast with steep cliff, ice shelf and weathered icebergs.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aabed8a91a0975e81113",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2ac1bffbefc6",
        "input_record_sha256": "d5ee19b3469fddbf3823be14b3c7007b7ad42a3ef4de8816d71f4e0b419856d2",
        "original_fields": {
          "id": "artifact-2ac1bffbefc6",
          "artifact_id": "P54/16/643",
          "title": "Southern icefoot, Cape Adare, April 1911",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Debenham, Frank",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-643",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-643",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-643",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Debenham Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: View along coast with steep cliff, ice shelf and weathered icebergs.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View along coast with steep cliff, ice shelf and weathered icebergs."
        }
      },
      "record_sha256": "eb8eec58d4cf510dbbabe8f3260c7b3ee4fe8a1c74f6b61ba3ef510db1f14af2"
    },
    {
      "id": "history:artifact-2bc0a8c3c77f",
      "legacy_id": "artifact-2bc0a8c3c77f",
      "kind": "historical",
      "title": "Nimrod exploration and survey map",
      "url": "vault.html#artifact-2bc0a8c3c77f",
      "summary": "Map traces the expedition’s distinct survey parties.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:65531c47b015981fcb68",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-2bc0a8c3c77f.jpg",
          "caption": "Actual artifact image; source credit: Library of Congress.",
          "title": "Nimrod exploration and survey map",
          "href": "vault.html#artifact-2bc0a8c3c77f"
        },
        "reuse_notice": "LOC Geography and Map Division: free use/reuse absent contrary advisory.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1909",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2bc0a8c3c77f",
        "input_record_sha256": "25e09de3ea5743062baeb4ac32e27dd8755fdb8c3fe882bf24458ff2e68a1537",
        "original_fields": {
          "title": "Nimrod exploration and survey map",
          "date": "1909",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2002624045/",
          "rights": "LOC Geography and Map Division: free use/reuse absent contrary advisory.",
          "categories": [
            "map",
            "Nimrod expedition"
          ],
          "description": "Map traces the expedition’s distinct survey parties.",
          "artifact_id": "LOC 2002624045",
          "id": "artifact-2bc0a8c3c77f",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "reuse-statement-verified",
          "visual_source": {
            "id": "artifact-2bc0a8c3c77f",
            "title": "Nimrod exploration and survey map",
            "official_source_url": "https://www.loc.gov/item/2002624045/",
            "official_viewer_url": "https://www.loc.gov/item/2002624045/",
            "direct_image_url": "https://blogs.loc.gov/maps/files/2021/08/Ant1907-1909.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "LOC item2002624045 explicitly free use/reuse absent contrary advisory.",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Map traces the expedition’s distinct survey parties."
        }
      },
      "record_sha256": "f40565f6a9c3da0f58361a8c467fd6176aef6b01e5b3fbf5b9bd0bcf91e0e5f3"
    },
    {
      "id": "history:artifact-2bcf97f2c70b",
      "legacy_id": "artifact-2bcf97f2c70b",
      "kind": "historical",
      "title": "V.D. Carse standing in snow by ‘Penola’",
      "url": "vault.html#artifact-2bcf97f2c70b",
      "summary": "Cataloged expedition photograph: Carse stands on ice next to the sailing ship ‘Penola’, boxes, partially buried by snow, lie on the ground nearby.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:2790a1ce81590f06f715",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2bcf97f2c70b",
        "input_record_sha256": "06e0bb89c003df6a265c86ea062c1c3bcef96721527556d1059b8bb495f538de",
        "original_fields": {
          "id": "artifact-2bcf97f2c70b",
          "artifact_id": "P51/8/G024",
          "title": "V.D. Carse standing in snow by ‘Penola’",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Gurney, Norman Arthur",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g024",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g024",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g024",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Carse stands on ice next to the sailing ship ‘Penola’, boxes, partially buried by snow, lie on the ground nearby.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Carse stands on ice next to the sailing ship ‘Penola’, boxes, partially buried by snow, lie on the ground nearby."
        }
      },
      "record_sha256": "6bf96f8291c63b96b163b1b3558ec45df305fd53258c8fbbf84e0bf0e126fe08"
    },
    {
      "id": "history:artifact-2cfb7d713aaf",
      "legacy_id": "artifact-2cfb7d713aaf",
      "kind": "historical",
      "title": "Scotia cabin companions",
      "url": "vault.html#artifact-2cfb7d713aaf",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-09",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2cfb7d713aaf",
        "input_record_sha256": "879f17715017aa4a05ac8e209903e56a77ad6cf89e949feb7d6f3488933d809d",
        "original_fields": {
          "title": "Scotia cabin companions",
          "date": "1903-09",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/618",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-2cfb7d713aaf",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-2cfb7d713aaf",
            "title": "Scotia cabin companions",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0618.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "fe04b9ae3d4019c10d6c8e51d6330546f50ea9c1c46cab61bf8c07e6f86691a0"
    },
    {
      "id": "history:artifact-2e6fe94adde5",
      "legacy_id": "artifact-2e6fe94adde5",
      "kind": "historical",
      "title": "Tartaria sive magni chami imperium",
      "url": "vault.html#artifact-2e6fe94adde5",
      "summary": "Historic Asian regional designation; not evidence of a global lost empire.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6f1034f95f2c30f364d6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-2e6fe94adde5.jpg",
          "caption": "Abraham Ortelius (1570). Library of Congress, Geography and Map Division, G1006 .T5 1570, LCCN 2003683482. Actual institutional reproduction; labels and artifact existence do not verify later interpretations. Source & reuse ↗",
          "title": "Tartaria sive magni chami imperium",
          "href": "vault.html#artifact-2e6fe94adde5"
        },
        "reuse_notice": "Library of Congress Geography and Map Division: free use and reuse absent a contrary Rights Advisory; item has no contrary advisory.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1570",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2e6fe94adde5",
        "input_record_sha256": "9f80e02731ded628d413b202d507b5d8dbde489e09c450e3045060ac5585efc0",
        "original_fields": {
          "title": "Tartaria sive magni chami imperium",
          "date": "1570",
          "institution": "Library of Congress",
          "source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Tartary",
            "historical"
          ],
          "description": "Historic Asian regional designation; not evidence of a global lost empire.",
          "notes": "Creator: Abraham Ortelius",
          "id": "artifact-2e6fe94adde5",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-2e6fe94adde5",
            "title": "Tartaria sive magni chami imperium",
            "official_source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "official_viewer_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "direct_image_url": "https://blogs.loc.gov/maps/files/2025/06/Tartariae-magnae.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution page."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/artifact-2e6fe94adde5.jpg",
            "width": 960,
            "height": 652,
            "credit": "Abraham Ortelius (1570). Library of Congress, Geography and Map Division, G1006 .T5 1570, LCCN 2003683482.",
            "source_url": "https://www.loc.gov/resource/g3200m.gct00126/?sp=104",
            "rights": "Library of Congress Geography and Map Division: free use and reuse absent a contrary Rights Advisory; item has no contrary advisory.",
            "transform": "Resize only; original aspect ratio retained; no generated imagery."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Historic Asian regional designation; not evidence of a global lost empire."
        }
      },
      "record_sha256": "8c982be851a0726035cece05c751a4c4b7548f682cb5fc104931b319aea52502"
    },
    {
      "id": "history:artifact-2f0aefd4f8ab",
      "legacy_id": "artifact-2f0aefd4f8ab",
      "kind": "historical",
      "title": "Acaib-ül Mahlûkat world diagram",
      "url": "vault.html#artifact-2f0aefd4f8ab",
      "summary": "Mythic world-supporting creatures; not navigation.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7ca77d19e448841462de",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c. 1553",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2f0aefd4f8ab",
        "input_record_sha256": "8c54366c9dc3636a37fe181fc214ec208f17288957568e1e9229b86bde65a686",
        "original_fields": {
          "id": "artifact-2f0aefd4f8ab",
          "title": "Acaib-ül Mahlûkat world diagram",
          "creator": "Zekeriya Kazvinî tradition",
          "date": "c. 1553",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj104",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s104.jpg",
          "classification": "Islamic cosmology",
          "relevance_and_caution": "Mythic world-supporting creatures; not navigation.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Mythic world-supporting creatures; not navigation.",
          "categories": [
            "Islamic cosmology"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-2f0aefd4f8ab",
            "title": "Acaib-ül Mahlûkat world diagram",
            "official_source_url": "https://www.loc.gov/exhibits/world/earth.html#obj104",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj104",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s104.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Mythic world-supporting creatures; not navigation."
        }
      },
      "record_sha256": "d47c642bb59e4d4e082c4bf9699a49ba12a562b8ae983f1d5975eaf7b3c1700b"
    },
    {
      "id": "history:artifact-2f64a73de2cd",
      "legacy_id": "artifact-2f64a73de2cd",
      "kind": "historical",
      "title": "Getting the ill-fated motor-sledge off the ship. Jan. 8th 1911.",
      "url": "vault.html#artifact-2f64a73de2cd",
      "summary": "Cataloged expedition photograph: Six expedition members stand in line on planks of wood lying on the ice next to ship ‘Terra Nova’. They haul on a rope which is attached to a motorised sledge, equipped with caterpillar tracks, which is suspended by a block and tackle from the Terra Nova’s yardarm. Other expedition members stand on the ice and on deck watching.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:cc2909be6326c0737889",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "8.1.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2f64a73de2cd",
        "input_record_sha256": "3acec4e04023a0c64d7ff71829aeef5021cef6dc7070ea1edd3791a4e92b0bd3",
        "original_fields": {
          "id": "artifact-2f64a73de2cd",
          "artifact_id": "P2005/5/161",
          "title": "Getting the ill-fated motor-sledge off the ship. Jan. 8th 1911.",
          "date": "8.1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-161",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-161",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-161",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Six expedition members stand in line on planks of wood lying on the ice next to ship ‘Terra Nova’. They haul on a rope which is attached to a motorised sledge, equipped with caterpillar tracks, which is suspended by a block and tackle from the Terra Nova’s yardarm. Other expedition members stand on the ice and on deck watching.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Six expedition members stand in line on planks of wood lying on the ice next to ship ‘Terra Nova’. They haul on a rope which is attached to a motorised sledge, equipped with caterpillar tracks, which is suspended by a block and tackle from the Terra Nova’s yardarm. Other expedition members stand on the ice and on deck watching."
        }
      },
      "record_sha256": "b8e94cc91956d7275a1c605fd287bc6a7313fee159b14bbb8120fdf271cb3fcc"
    },
    {
      "id": "history:artifact-303ff3fc723d",
      "legacy_id": "artifact-303ff3fc723d",
      "kind": "historical",
      "title": "Ration Bags — Terra Nova expedition",
      "url": "vault.html#artifact-303ff3fc723d",
      "summary": "Individually cataloged ration bags associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1615.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:303ff3fc723de9429ee5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-303ff3fc723d",
        "input_record_sha256": "36dc00b69d0e0aa515858dd4f9755b356092b3b40189582bec0a00e615c16602",
        "original_fields": {
          "id": "artifact-303ff3fc723d",
          "title": "Ration Bags — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212315",
          "accession": "ZBA1615",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged ration bags associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1615.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Ration Bags",
          "notes": "",
          "artifact_id": "ZBA1615",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged ration bags associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1615."
        }
      },
      "record_sha256": "898d05072ccbb2e94cda41d1f9e6efbc85f7b4d4559cc7ffe961eb60b03d9630"
    },
    {
      "id": "history:artifact-31298c49a259",
      "legacy_id": "artifact-31298c49a259",
      "kind": "historical",
      "title": "South Polar Chart: exploration schemes",
      "url": "vault.html#artifact-31298c49a259",
      "summary": "Bartholomew map advocates future exploration.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1898",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-31298c49a259",
        "input_record_sha256": "f7c51fcd33ac0f490a22e064b8401423d32272bd73848ca5898f40de407a3380",
        "original_fields": {
          "title": "South Polar Chart: exploration schemes",
          "date": "1898",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Bartholomew map advocates future exploration.",
          "id": "artifact-31298c49a259",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-31298c49a259",
            "title": "South Polar Chart: exploration schemes",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/cab1854b8a6b7b326e45b62aec02293be86f3fe1-447x400.jpg/south-polar-chart,-in-the-scottish-geographical-magazine-1898-p-572.-bl-maps-162..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Bartholomew map advocates future exploration."
        }
      },
      "record_sha256": "d4d7442accf33cf79372c2cb4d038ea91489377fcbbbc6dc84f731ec510cee0d"
    },
    {
      "id": "history:artifact-31759c365148",
      "legacy_id": "artifact-31759c365148",
      "kind": "historical",
      "title": "Sketch Maps showing the Track and Explorations of the German South Polar Expedition 1902-3 by Dr. Von Drygalski.",
      "url": "vault.html#artifact-31759c365148",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:60e91dab01900b04fd56",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-31759c365148",
        "input_record_sha256": "88ba2467c34a16bd503d2c193be448be1c460043f38a39ee48a064956f999020",
        "original_fields": {
          "id": "artifact-31759c365148",
          "artifact_id": "AADC map 3684",
          "accession": "AADC map 3684",
          "title": "Sketch Maps showing the Track and Explorations of the German South Polar Expedition 1902-3 by Dr. Von Drygalski.",
          "date": "1904",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3684",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/German_South_Polar_Exp_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3684",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 6 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "-",
          "physical_size": "29 x 43.5 cm",
          "catalog_notes": "Secant conical projection.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/German_South_Polar_Exp_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "5230a8cf4b6e6458af41695b5e54b90b658d112e12882f975b187c4090f0015e"
    },
    {
      "id": "history:artifact-32cd3838b0aa",
      "legacy_id": "artifact-32cd3838b0aa",
      "kind": "historical",
      "title": "Chart showing the discoveries and approximate track of Edward Bransfield, Master R.N. in the hired brig \"Williams\" of Blyth, when exploring the South Shetland Islands and the northern extremity of Graham Land in the year 1820.",
      "url": "vault.html#artifact-32cd3838b0aa",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 2 650 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:64756f609bdc5391421e",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1925",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-32cd3838b0aa",
        "input_record_sha256": "0a992d3442efe8f25d8ebc3a3cb7b5c3471629fe58e6d162f54a2034a79dc8f6",
        "original_fields": {
          "id": "artifact-32cd3838b0aa",
          "artifact_id": "AADC map 3701",
          "accession": "AADC map 3701",
          "title": "Chart showing the discoveries and approximate track of Edward Bransfield, Master R.N. in the hired brig \"Williams\" of Blyth, when exploring the South Shetland Islands and the northern extremity of Graham Land in the year 1820.",
          "date": "March 1925",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3701",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 2 650 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Ant_Bransfields_track_Gould_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3701",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 2 650 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "25.5 x 38.5 cm",
          "catalog_notes": "Drawn by Lieut. Commander R.T. Gould, R.N. The coastline shown in red, has been copied in facsimile from Bransfield's chart, as published in 1822, by the Admiralty. The lettering in red has been transcribed from the original MS, chart. The remainder of the chart is based upon the most recent surveys.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Ant_Bransfields_track_Gould_thumb.jpg",
          "visual_status": "verified-primary-image-link",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 2 650 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "a24f469d612cece061fdf2c8d8a68fd074027f3855542902298ce6d034d4dd93"
    },
    {
      "id": "history:artifact-334c59605145",
      "legacy_id": "artifact-334c59605145",
      "kind": "historical",
      "title": "V.D. Carse in dory, with Mount William behind",
      "url": "vault.html#artifact-334c59605145",
      "summary": "Cataloged expedition photograph: Carse sculls a small wooden boat past ice floes. Snow-covered coast and mountains in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a649393e0a0b87ca79f7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-334c59605145",
        "input_record_sha256": "63fb6770e65a2691b3252a8fa7074d16d465fd7102d85694b40e6179441186b1",
        "original_fields": {
          "id": "artifact-334c59605145",
          "artifact_id": "P51/8/B051",
          "title": "V.D. Carse in dory, with Mount William behind",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Roberts, Brian Birley",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b051",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b051",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b051",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Carse sculls a small wooden boat past ice floes. Snow-covered coast and mountains in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Carse sculls a small wooden boat past ice floes. Snow-covered coast and mountains in background."
        }
      },
      "record_sha256": "3b7ad680535fed20e9f0ee6959289970aa6e18eb8ac75eb7737fa0cb5e2f3f58"
    },
    {
      "id": "history:artifact-395bc421d9b5",
      "legacy_id": "artifact-395bc421d9b5",
      "kind": "historical",
      "title": "Macquarie Island",
      "url": "vault.html#artifact-395bc421d9b5",
      "summary": "Separately numbered original oversized, formerly at maxx 889.8/1913/1. in the Australasian Antarctic Expedition records; inventory item 12, .",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c1912-1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-395bc421d9b5",
        "input_record_sha256": "c8acd10fd3ff784723826ec25aee9b34f8f8a06846f2120d784969d5917ba0b5",
        "original_fields": {
          "id": "artifact-395bc421d9b5",
          "artifact_id": "SLNSW AAE map 12",
          "accession": "Australasian Antarctic Expedition records, map 12",
          "title": "Macquarie Island",
          "date": "c1912-1913",
          "creator": "Blake, Leslie Russell",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original oversized, formerly at maxx 889.8/1913/1. in the Australasian Antarctic Expedition records; inventory item 12, .",
          "visual_url": "http://acms.sl.nsw.gov.au/album/albumView.aspx?itemID=883475&acmsid=0",
          "official_viewer_url": "http://acms.sl.nsw.gov.au/album/albumView.aspx?itemID=883475&acmsid=0",
          "embed_allowed": false,
          "verification_status": "Inventory item verified; linked legacy scan delivery unverified.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "primary-viewer-link-delivery-unverified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; linked legacy scan delivery unverified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original oversized, formerly at maxx 889.8/1913/1. in the Australasian Antarctic Expedition records; inventory item 12, ."
        }
      },
      "record_sha256": "7250bc617dd368a1f3435af49f916a915ca7047be936e2268a43bc0bb3ffc42e"
    },
    {
      "id": "history:artifact-3a7c3356f5a8",
      "legacy_id": "artifact-3a7c3356f5a8",
      "kind": "historical",
      "title": "Mitten — Terra Nova expedition",
      "url": "vault.html#artifact-3a7c3356f5a8",
      "summary": "Individually cataloged mitten associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0319.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:3a7c3356f5a811df51d2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3a7c3356f5a8",
        "input_record_sha256": "c058101241ae530a571b22a3af81d3aaa602dc157e24d432031717c9fd85292c",
        "original_fields": {
          "id": "artifact-3a7c3356f5a8",
          "title": "Mitten — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71134",
          "accession": "TXT0319",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged mitten associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0319.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/511/rv1467.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71134",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Mitten",
          "notes": "One mitten of a documented pair; companion TXT0318 deliberately not counted separately.",
          "artifact_id": "TXT0319",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/511/rv1467.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged mitten associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0319."
        }
      },
      "record_sha256": "a045a43eade881b8bae68143bc2878ce6ea161dc69b1e53077323f7c468f7780"
    },
    {
      "id": "history:artifact-3b3ca04d21ce",
      "legacy_id": "artifact-3b3ca04d21ce",
      "kind": "historical",
      "title": "Lethwait Strait coast",
      "url": "vault.html#artifact-3b3ca04d21ce",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-03-23",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3b3ca04d21ce",
        "input_record_sha256": "d96799b5ca449207afd17390538bb95fc767dd381d4557296dcd04abec718f2f",
        "original_fields": {
          "title": "Lethwait Strait coast",
          "date": "1903-03-23",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/171",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-3b3ca04d21ce",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-3b3ca04d21ce",
            "title": "Lethwait Strait coast",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0171.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "db6457571292f1899cd2e7fbb279b9f015b1d3d447d504b275d62a60e9f22c07"
    },
    {
      "id": "history:artifact-3c5c5acccb97",
      "legacy_id": "artifact-3c5c5acccb97",
      "kind": "historical",
      "title": "From the Aft deck house of the Terra Nova. Pancake floe after entering the Pack. Dec 9th 1910",
      "url": "vault.html#artifact-3c5c5acccb97",
      "summary": "Cataloged expedition photograph: Four members of the Expedition stand at ship ‘Terra Nova”s rail, looking out at ice floes which extends to horizon.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d084bb6141a5fdd988e0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "9.12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3c5c5acccb97",
        "input_record_sha256": "f6e13b232dd99dc9214c24b0504be59a4be3ab54b7efe225d2324487d6c1f54d",
        "original_fields": {
          "id": "artifact-3c5c5acccb97",
          "artifact_id": "P2005/5/7",
          "title": "From the Aft deck house of the Terra Nova. Pancake floe after entering the Pack. Dec 9th 1910",
          "date": "9.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-7",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-7",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-7",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Four members of the Expedition stand at ship ‘Terra Nova”s rail, looking out at ice floes which extends to horizon.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Four members of the Expedition stand at ship ‘Terra Nova”s rail, looking out at ice floes which extends to horizon."
        }
      },
      "record_sha256": "7bcb5e4097c7a7af170ac2e3d9f1c37d0ca50479f27d820a6ae2d35591e8e69c"
    },
    {
      "id": "history:artifact-3d1a8927700c",
      "legacy_id": "artifact-3d1a8927700c",
      "kind": "historical",
      "title": "Map showing route of Southern Sledging party over King George V Land",
      "url": "vault.html#artifact-3d1a8927700c",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 18, 101cm x 69cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3d1a8927700c",
        "input_record_sha256": "b6cb60a1b6b314f8ce7ca29cb8e01fec19ccb3bf20b1c9046f8d3c5fa6bcaabd",
        "original_fields": {
          "id": "artifact-3d1a8927700c",
          "artifact_id": "SLNSW AAE map 18",
          "accession": "Australasian Antarctic Expedition records, map 18",
          "title": "Map showing route of Southern Sledging party over King George V Land",
          "date": "c1912",
          "creator": "Bage, Edward F. R.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 18, 101cm x 69cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 18, 101cm x 69cm."
        }
      },
      "record_sha256": "7ff8ca64f5ed06d89f4ab37d789e66aec1b798f2a1922ed6787bea6d9750472e"
    },
    {
      "id": "history:artifact-3d4ad5b7d80e",
      "legacy_id": "artifact-3d4ad5b7d80e",
      "kind": "historical",
      "title": "Oates",
      "url": "vault.html#artifact-3d4ad5b7d80e",
      "summary": "Cataloged expedition photograph: Portrait of Captain Oates.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6bf9c2369a20c417a588",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3d4ad5b7d80e",
        "input_record_sha256": "e796e06c13c32d86b063164dd2ba7974dd7e020d5400d17c1adf888bab254433",
        "original_fields": {
          "id": "artifact-3d4ad5b7d80e",
          "artifact_id": "P2005/5/1403",
          "title": "Oates",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1403",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1403",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1403",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Portrait of Captain Oates.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Portrait of Captain Oates."
        }
      },
      "record_sha256": "9a112c479d43a9dc7f61b6670a2181e4b6ac421de4117849391498a5cf45566a"
    },
    {
      "id": "history:artifact-3d833faa9d32",
      "legacy_id": "artifact-3d833faa9d32",
      "kind": "historical",
      "title": "Sheet SQ 40-41/10 Oygarden Group, Kemp Land, Australian Antarctic Territory [SQ 39-40/12]",
      "url": "vault.html#artifact-3d833faa9d32",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e6672106d471e432e61c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-99.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 99. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 40-41/10 Oygarden Group, Kemp Land, Australian Antarctic Territory [SQ 39-40/12]",
          "href": "vault.html#artifact-3d833faa9d32"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May-1966",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3d833faa9d32",
        "input_record_sha256": "57a5bd8a5d5804ced4d234454ee3a0e2e40289e1ba6a68e9afd2b2a3063f2965",
        "original_fields": {
          "id": "artifact-3d833faa9d32",
          "artifact_id": "AADC map 99",
          "accession": "AADC map 99",
          "title": "Sheet SQ 40-41/10 Oygarden Group, Kemp Land, Australian Antarctic Territory [SQ 39-40/12]",
          "date": "May-1966",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=99",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-99.jpg",
            "width": 957,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 99. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=99",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "45da479eed5067714fb697e04313d0c972543e8a372a6695fe4dc630f8a84d31"
    },
    {
      "id": "history:artifact-3dfec71cbe98",
      "legacy_id": "artifact-3dfec71cbe98",
      "kind": "historical",
      "title": "Carte de Tartarie",
      "url": "vault.html#artifact-3dfec71cbe98",
      "summary": "Published edition of a 1706 map distinguishing several Tartaries.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ea78dcc3d783dfa9abae",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-3dfec71cbe98.jpg",
          "caption": "Guillaume de L’Isle, Covens and Mortier (1757). University of Wisconsin–Milwaukee Libraries, World Digital Library / Library of Congress. Actual institutional reproduction; labels and artifact existence do not verify later interpretations. Source & reuse ↗",
          "title": "Carte de Tartarie",
          "href": "vault.html#artifact-3dfec71cbe98"
        },
        "reuse_notice": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1757",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3dfec71cbe98",
        "input_record_sha256": "7daf885d8ca60c47d48c9e7be591a9a8f1b70315a2500e4cc0e556b33b8ad981",
        "original_fields": {
          "title": "Carte de Tartarie",
          "date": "1757",
          "institution": "University of Wisconsin–Milwaukee Libraries",
          "source_url": "https://www.loc.gov/item/2021668613/",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Tartary",
            "historical"
          ],
          "description": "Published edition of a 1706 map distinguishing several Tartaries.",
          "notes": "Creator: Guillaume de l’Isle; Covens and Mortier",
          "id": "artifact-3dfec71cbe98",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-3dfec71cbe98",
            "title": "Carte de Tartarie",
            "official_source_url": "https://www.loc.gov/item/2021668613/",
            "official_viewer_url": "https://www.loc.gov/resource/gdcwdl.wdl_15038/",
            "direct_image_url": "https://tile.loc.gov/image-services/iiif/service:gdc:gdcwdl:wd:l_:15:03:8:wdl_15038:am004751/full/pct:100/0/default.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/artifact-3dfec71cbe98.jpg",
            "width": 861,
            "height": 720,
            "credit": "Guillaume de L’Isle, Covens and Mortier (1757). University of Wisconsin–Milwaukee Libraries, World Digital Library / Library of Congress.",
            "source_url": "https://www.loc.gov/item/2021668613/",
            "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
            "transform": "Resize only; original aspect ratio retained; no generated imagery."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Published edition of a 1706 map distinguishing several Tartaries."
        }
      },
      "record_sha256": "5cc3dbffd2941c85cf1e0295a937af1fc7b1dd02da871b7a964a470077d09d87"
    },
    {
      "id": "history:artifact-3e1c9c6c4155",
      "legacy_id": "artifact-3e1c9c6c4155",
      "kind": "historical",
      "title": "J.I. Moore with Prince (dog)",
      "url": "vault.html#artifact-3e1c9c6c4155",
      "summary": "Cataloged expedition photograph: Moore bends down to kiss a sled dog. Skis stand in the snow to one side, an overturned sledge stands behind. Rocky outcrop in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a0509ea5e000805ee455",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3e1c9c6c4155",
        "input_record_sha256": "075085d8c3d4f82c8b16dc37bd0c66ebae98dbe05840d1047870aade232687ca",
        "original_fields": {
          "id": "artifact-3e1c9c6c4155",
          "artifact_id": "P51/8/F435",
          "title": "J.I. Moore with Prince (dog)",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f435",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f435",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f435",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore bends down to kiss a sled dog. Skis stand in the snow to one side, an overturned sledge stands behind. Rocky outcrop in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore bends down to kiss a sled dog. Skis stand in the snow to one side, an overturned sledge stands behind. Rocky outcrop in the background."
        }
      },
      "record_sha256": "78e087b70bfaceecdd1365ae3aebf146de6e32ece5b4c82f73500575b81f39de"
    },
    {
      "id": "history:artifact-3e8dd363c9cb",
      "legacy_id": "artifact-3e8dd363c9cb",
      "kind": "historical",
      "title": "Markham instructions to Colbeck",
      "url": "vault.html#artifact-3e8dd363c9cb",
      "summary": "Instructions connect the Morning relief voyage to Discovery logistics.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aed6ed3526144b8745b5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-02-24",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-3e8dd363c9cb",
        "input_record_sha256": "5d3b9ba59fffd93a457ddd8ab91f14e5ad1af2cb15e663ac8e063e3048f69d41",
        "original_fields": {
          "title": "Markham instructions to Colbeck",
          "date": "1903-02-24",
          "institution": "Dundee Heritage Trust",
          "source_url": "https://www.dhtcollections.com/item/Brand_LetterfromSirClementsMarkhaminstructingColbeck_458_0_25394_1.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Discovery expedition"
          ],
          "description": "Instructions connect the Morning relief voyage to Discovery logistics.",
          "artifact_id": "DUNIH 1.015",
          "id": "artifact-3e8dd363c9cb",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-3e8dd363c9cb",
            "title": "Markham instructions to Colbeck",
            "official_source_url": "https://www.dhtcollections.com/item/Brand_LetterfromSirClementsMarkhaminstructingColbeck_458_0_25394_1.html",
            "official_viewer_url": "https://www.dhtcollections.com/item/Brand_LetterfromSirClementsMarkhaminstructingColbeck_458_0_25394_1.html",
            "direct_image_url": "https://www.dhtcollections.com/images/products/verylarge/1337179338uploadLoansColbeckDUNIH1.015.1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution page."
          },
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Instructions connect the Morning relief voyage to Discovery logistics."
        }
      },
      "record_sha256": "35f9633e93d8b0d59ffd07b3ad0507974c517054b035e247fb81a93616b0b260"
    },
    {
      "id": "history:artifact-40d77b9297b0",
      "legacy_id": "artifact-40d77b9297b0",
      "kind": "historical",
      "title": "MacMurchie second Scotia diary",
      "url": "vault.html#artifact-40d77b9297b0",
      "summary": "Second handwritten diary records the later expedition experience.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8c70a2f1d82f5fc46a36",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-40d77b9297b0",
        "input_record_sha256": "571e61a1223fb091af6538ed042f0636492452f18af6049cff2466bbbf974516",
        "original_fields": {
          "title": "MacMurchie second Scotia diary",
          "date": "1902–1904",
          "institution": "Scottish Maritime Museum",
          "source_url": "https://www.scottishmaritimemuseum.org/collections/its-snowing-again-diaries-from-edwardian-antarctica/",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Scotia expedition"
          ],
          "description": "Second handwritten diary records the later expedition experience.",
          "notes": "Separate physical manuscript, not duplicate edition; exact volume date range pending.",
          "id": "artifact-40d77b9297b0",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Second handwritten diary records the later expedition experience."
        }
      },
      "record_sha256": "c06f866a8aba13499ad00cbd2fec0d2631d69fbffc4fe4dad312aa3856e23290"
    },
    {
      "id": "history:artifact-40ff1ddeeed0",
      "legacy_id": "artifact-40ff1ddeeed0",
      "kind": "historical",
      "title": "J.I. Moore with Sophie (dog)",
      "url": "vault.html#artifact-40ff1ddeeed0",
      "summary": "Cataloged expedition photograph: Moore bends down, holding a sled dog.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7a977bb7c647b3b8b683",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-40ff1ddeeed0",
        "input_record_sha256": "2a1d3199502a16f47c4ffccddd4127d77fbfff2a51a718273f099f2428116cdf",
        "original_fields": {
          "id": "artifact-40ff1ddeeed0",
          "artifact_id": "P51/8/F440",
          "title": "J.I. Moore with Sophie (dog)",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f440",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f440",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f440",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore bends down, holding a sled dog.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore bends down, holding a sled dog."
        }
      },
      "record_sha256": "6520901d62445496f7aa2179bef175e4c524ae13c0d940797b8916a30f95642d"
    },
    {
      "id": "history:artifact-417afb42ed6c",
      "legacy_id": "artifact-417afb42ed6c",
      "kind": "historical",
      "title": "Midwinter Day Tree. June 22nd 1911",
      "url": "vault.html#artifact-417afb42ed6c",
      "summary": "Cataloged expedition photograph: In the interior of the hut, expedition members sit and stand around the table. Flags and pieces of paper hang down from the ceiling to nearly touch the table.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:99a00768575799de19d8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "6.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-417afb42ed6c",
        "input_record_sha256": "c44eee4342bc27d6b624c16fbf64dd2bbf778f2fe11e2a1fb83b1c823cde4066",
        "original_fields": {
          "id": "artifact-417afb42ed6c",
          "artifact_id": "P2005/5/450",
          "title": "Midwinter Day Tree. June 22nd 1911",
          "date": "6.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-450",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-450",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-450",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: In the interior of the hut, expedition members sit and stand around the table. Flags and pieces of paper hang down from the ceiling to nearly touch the table.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: In the interior of the hut, expedition members sit and stand around the table. Flags and pieces of paper hang down from the ceiling to nearly touch the table."
        }
      },
      "record_sha256": "f1511057e99ae6f514aa206ec843f5b82851e66af470f2fa7c316af702bcc603"
    },
    {
      "id": "history:artifact-41ea91cd700c",
      "legacy_id": "artifact-41ea91cd700c",
      "kind": "historical",
      "title": "Captain Scott",
      "url": "vault.html#artifact-41ea91cd700c",
      "summary": "Cataloged expedition photograph: Captain Scott in sledging clothing stands by a sledge.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7ea10c0d06dfe3f9d174",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "4.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-41ea91cd700c",
        "input_record_sha256": "0e336979e04d87e1f57246ea81ba8f055487eab9262ad64b602e6863e3d184a5",
        "original_fields": {
          "id": "artifact-41ea91cd700c",
          "artifact_id": "P2005/5/369",
          "title": "Captain Scott",
          "date": "4.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-369",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-369",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-369",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Captain Scott in sledging clothing stands by a sledge.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Captain Scott in sledging clothing stands by a sledge."
        }
      },
      "record_sha256": "291e22be6775cf834f4baaad2111a5dfeef06a8e2e5ac5afd4f9f0a672219291"
    },
    {
      "id": "history:artifact-46a786a23042",
      "legacy_id": "artifact-46a786a23042",
      "kind": "historical",
      "title": "Circumjacent the South Pole",
      "url": "vault.html#artifact-46a786a23042",
      "summary": "Early charted Antarctic coastline.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1844",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-46a786a23042",
        "input_record_sha256": "b33301aae202b48578de354991859a3154ded71b0642f3453f4ed58f2effd600",
        "original_fields": {
          "title": "Circumjacent the South Pole",
          "date": "1844",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Early charted Antarctic coastline.",
          "identifier": "Maps 38.e.8",
          "id": "artifact-46a786a23042",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 38.e.8",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-46a786a23042",
            "title": "Circumjacent the South Pole",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/641338c4f2036056bb49315be3be241e8c1b4c93-346x400.jpg/circumjacent-the-south-pole,-1844.-bl-maps-38.e.8..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Early charted Antarctic coastline."
        }
      },
      "record_sha256": "a63887041577fba948b31ec444311ca93f1d0269145524e09b69e54996c83b22"
    },
    {
      "id": "history:artifact-47a8edb955f0",
      "legacy_id": "artifact-47a8edb955f0",
      "kind": "historical",
      "title": "Robertson using sextant",
      "url": "vault.html#artifact-47a8edb955f0",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-03-21",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-47a8edb955f0",
        "input_record_sha256": "7209a6e3ec16a1dbbb8db62b3294afafc014a32ef20e10f05b891c082d0a1145",
        "original_fields": {
          "title": "Robertson using sextant",
          "date": "1904-03-21",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/1731",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-47a8edb955f0",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-47a8edb955f0",
            "title": "Robertson using sextant",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_1731.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "50b45aad1c6f404979e8451e1f936b48721e8f6a7244b4baefeb90b1161578cb"
    },
    {
      "id": "history:artifact-48a008c62df0",
      "legacy_id": "artifact-48a008c62df0",
      "kind": "historical",
      "title": "Chart of the Southern Hemisphere",
      "url": "vault.html#artifact-48a008c62df0",
      "summary": "Cook voyage tracks surround an uncharted center.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "cook-1777-loc.jpg",
          "caption": "Related LOC copy of Cook’s 1777 chart—not the British Library holding cataloged below. 616×640 film-copy preview; no added detail.",
          "title": "Chart of the Southern Hemisphere",
          "href": "vault.html#artifact-48a008c62df0"
        },
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1777",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-48a008c62df0",
        "input_record_sha256": "20accf33e408f57304cd39d7a36ddce2874067ca45141d3f14bd7136bbaa710a",
        "original_fields": {
          "title": "Chart of the Southern Hemisphere",
          "date": "1777",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Cook voyage tracks surround an uncharted center.",
          "identifier": "10025.f.20",
          "id": "artifact-48a008c62df0",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "10025.f.20",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-48a008c62df0",
            "title": "Chart of the Southern Hemisphere",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/cf41ab6cb78b4b613e09874e40773c9eab8d629f-356x400.jpg/achart-of-the-southern-hemisphere,-in-a-voyage-towards-the-south-pole...,-1777.-bl-10025.f.20..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Cook voyage tracks surround an uncharted center."
        }
      },
      "record_sha256": "aeade826a29ef66c76c183316d9df651d395f9bce18d0f244089aa057d92a6d8"
    },
    {
      "id": "history:artifact-49e343dd5ab0",
      "legacy_id": "artifact-49e343dd5ab0",
      "kind": "historical",
      "title": "Amundsen South Pole expedition film",
      "url": "vault.html#artifact-49e343dd5ab0",
      "summary": "Surviving expedition film is preserved as documentary heritage.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d6703466943bf2bfca9b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910–1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-49e343dd5ab0",
        "input_record_sha256": "65c94001bb7ea47c431fd22c8bdaf6cd2ca0f0b0ffb5bec4d7cf133544a484e3",
        "original_fields": {
          "title": "Amundsen South Pole expedition film",
          "date": "1910–1912",
          "institution": "National Library of Norway",
          "source_url": "https://www.nb.no/dokumentarv-i-nasjonalbiblioteket/roald-amundsens-sydpolfilm-i-1911/",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "film",
            "Amundsen expedition"
          ],
          "description": "Surviving expedition film is preserved as documentary heritage.",
          "id": "artifact-49e343dd5ab0",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Surviving expedition film is preserved as documentary heritage."
        }
      },
      "record_sha256": "b3629f7211cbfb4a175ab99569fb8de67ed2b3e2da7428b51b84c110e370c153"
    },
    {
      "id": "history:artifact-4a29231c0db4",
      "legacy_id": "artifact-4a29231c0db4",
      "kind": "historical",
      "title": "Carta marina",
      "url": "vault.html#artifact-4a29231c0db4",
      "summary": "Compare with the 1507 map as changing cartographic knowledge, not literal cosmological geometry.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:0beb6d5def9bf5f8fa54",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1516",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4a29231c0db4",
        "input_record_sha256": "831f781cca0b86722617a41e8790b5886d8f3320e988c9887393665042c4f387",
        "original_fields": {
          "id": "artifact-4a29231c0db4",
          "title": "Carta marina",
          "creator": "Martin Waldseemüller",
          "date": "1516",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/",
          "supplemental_or_image_url": "https://apps.lib.umn.edu/bell/map/WALD/BIO/carta.html",
          "classification": "World map",
          "relevance_and_caution": "Compare with the 1507 map as changing cartographic knowledge, not literal cosmological geometry.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Compare with the 1507 map as changing cartographic knowledge, not literal cosmological geometry.",
          "categories": [
            "World map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-4a29231c0db4",
            "title": "Carta marina",
            "official_source_url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/",
            "official_viewer_url": "https://www.loc.gov/resource/g3200m.gct00046/?st=list",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "LOC catalog search verifies original1516 map sheet gallery, item2016586433; no direct image extracted."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Compare with the 1507 map as changing cartographic knowledge, not literal cosmological geometry."
        }
      },
      "record_sha256": "ab3e0e7aae1fb87ac1162d8588885f60451a1c8ff7b834ce7e1df0abb02a8e50"
    },
    {
      "id": "history:artifact-4a5054007a29",
      "legacy_id": "artifact-4a5054007a29",
      "kind": "historical",
      "title": "Sheet SQ 38-39/15 Simpson Peak, Enderby Land, Australian Antarctic Territory [SQ 39-40/13]",
      "url": "vault.html#artifact-4a5054007a29",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e4f1ed75a8f26a520d8d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-104.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 104. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 38-39/15 Simpson Peak, Enderby Land, Australian Antarctic Territory [SQ 39-40/13]",
          "href": "vault.html#artifact-4a5054007a29"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "August 1962",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4a5054007a29",
        "input_record_sha256": "e61ccb88796a3bf40fa2384fdfcf931cc34a700bb6d7d41b2c1b45893fbbe10c",
        "original_fields": {
          "id": "artifact-4a5054007a29",
          "artifact_id": "AADC map 104",
          "accession": "AADC map 104",
          "title": "Sheet SQ 38-39/15 Simpson Peak, Enderby Land, Australian Antarctic Territory [SQ 39-40/13]",
          "date": "August 1962",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=104",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_15_1962_250k_104_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=104",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "69.5 x 65 cm",
          "catalog_notes": "Simpson Peak SQ 38-39/15 have been numbered according to a map numbering system adopted by Department of National Mapping in 1962 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/13.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_15_1962_250k_104_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-104.jpg",
            "width": 894,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 104. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=104",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "a94a1bd203363b407f3f8472f8e84ab8b1ef1d233d4fd4ec043bfb1fb8daa38d"
    },
    {
      "id": "history:artifact-4a96d8ade061",
      "legacy_id": "artifact-4a96d8ade061",
      "kind": "historical",
      "title": "Routes of Captain R. Amundsen's South Polar Expedition 1911-12",
      "url": "vault.html#artifact-4a96d8ade061",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:93f1ef79ef2222d3483d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4a96d8ade061",
        "input_record_sha256": "52a665d92af91e86519831d2badcb5aabdd4c772cb35749cea6dccd576ab7c72",
        "original_fields": {
          "id": "artifact-4a96d8ade061",
          "artifact_id": "AADC map 3694",
          "accession": "AADC map 3694",
          "title": "Routes of Captain R. Amundsen's South Polar Expedition 1911-12",
          "date": "1913",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3694",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Routes_Capt_Amundsens_South_Polar_Exp_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3694",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 6 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "-",
          "physical_size": "36.5 x 56 cm",
          "catalog_notes": "Equidistant zenithal projection. Inset : Track of the \"Fram\" (1:80,000,000)",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Routes_Capt_Amundsens_South_Polar_Exp_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "ea2a6ef47c4810737b38da220a66536366d7d14afa44ba61eb08b25e3e629bfa"
    },
    {
      "id": "history:artifact-4dd423e1a837",
      "legacy_id": "artifact-4dd423e1a837",
      "kind": "historical",
      "title": "Rennick and a friendly Adelie. Feb. 9th 1911.",
      "url": "vault.html#artifact-4dd423e1a837",
      "summary": "Cataloged expedition photograph: Rennick sits on a sheet of ice. He leans towards an Adelie penguin which he is stroking on the back. Hut in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b9b3a9943b7a57246256",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "9.2.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4dd423e1a837",
        "input_record_sha256": "894f31bd22da239687cd15b4c30364acaf9babac83829331bc9ef0cee59c5ac5",
        "original_fields": {
          "id": "artifact-4dd423e1a837",
          "artifact_id": "P2005/5/235",
          "title": "Rennick and a friendly Adelie. Feb. 9th 1911.",
          "date": "9.2.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-235",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-235",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-235",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Rennick sits on a sheet of ice. He leans towards an Adelie penguin which he is stroking on the back. Hut in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Rennick sits on a sheet of ice. He leans towards an Adelie penguin which he is stroking on the back. Hut in background."
        }
      },
      "record_sha256": "b2e7cd52c776e30d8bb0a11ae3c5593c3eee1845a07a5cb7cf47e73c22768a3e"
    },
    {
      "id": "history:artifact-4ea16579129c",
      "legacy_id": "artifact-4ea16579129c",
      "kind": "historical",
      "title": "Weathered Kenyte boulder near house. “The Antarcticosauras”. March 8th 1911",
      "url": "vault.html#artifact-4ea16579129c",
      "summary": "Cataloged expedition photograph: View of weathered boulder on rocky terrain.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:12404317d5f1d56032f6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "3.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4ea16579129c",
        "input_record_sha256": "340c023af4d63bc9dc8eb17c4332ef0abb6931ff9d76c75f51a8f030af4d6d77",
        "original_fields": {
          "id": "artifact-4ea16579129c",
          "artifact_id": "P2005/5/317",
          "title": "Weathered Kenyte boulder near house. “The Antarcticosauras”. March 8th 1911",
          "date": "3.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-317",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-317",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-317",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: View of weathered boulder on rocky terrain.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View of weathered boulder on rocky terrain."
        }
      },
      "record_sha256": "7956ca30aee46f4b49e825527907c124f269244b02ee8b447452162a5eb91fc9"
    },
    {
      "id": "history:artifact-4f969ae4e2e4",
      "legacy_id": "artifact-4f969ae4e2e4",
      "kind": "historical",
      "title": "Cape Crozier Precipices. Jan. 3rd 1911.",
      "url": "vault.html#artifact-4f969ae4e2e4",
      "summary": "Cataloged expedition photograph: View from the sea of cliffs at Cape Crozier. Snow-covered hills behind.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e1a2029345d8f644049e",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "3.1.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4f969ae4e2e4",
        "input_record_sha256": "84590aed01bebdc75550f60170033efbeb670c6b7991e3d94d40044427a5ac4b",
        "original_fields": {
          "id": "artifact-4f969ae4e2e4",
          "artifact_id": "P2005/5/110",
          "title": "Cape Crozier Precipices. Jan. 3rd 1911.",
          "date": "3.1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-110",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-110",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-110",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: View from the sea of cliffs at Cape Crozier. Snow-covered hills behind.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View from the sea of cliffs at Cape Crozier. Snow-covered hills behind."
        }
      },
      "record_sha256": "5f5c3e8f52357e9f6452f9cf0257d21b7ebe3070cf9f30b392ba08245263a040"
    },
    {
      "id": "history:artifact-4f9894d4209b",
      "legacy_id": "artifact-4f9894d4209b",
      "kind": "historical",
      "title": "Camp at the South Pole",
      "url": "vault.html#artifact-4f9894d4209b",
      "summary": "Historical photograph records Scott’s polar party at Amundsen’s tent.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:1437e02de038b0f74697",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-4f9894d4209b.jpg",
          "caption": "Library of Congress, Prints and Photographs Division, LC-USZ62-30081. Actual institutional image reproduction; not proof of later interpretations. Source & reuse ↗",
          "title": "Camp at the South Pole",
          "href": "vault.html#artifact-4f9894d4209b"
        },
        "reuse_notice": "No known restrictions on publication.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4f9894d4209b",
        "input_record_sha256": "9fd23177b1b0faacb2396da83ac3caf4d806048dca5c77c7f1e71d634d044a09",
        "original_fields": {
          "title": "Camp at the South Pole",
          "date": "1912",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2009633384/",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Terra Nova expedition"
          ],
          "description": "Historical photograph records Scott’s polar party at Amundsen’s tent.",
          "artifact_id": "LOC 2009633384",
          "notes": "LOC curator links item; individual photographer attribution requires record review, do not assume copyright claimant took it.",
          "id": "artifact-4f9894d4209b",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-4f9894d4209b",
            "title": "Camp at the South Pole",
            "official_source_url": "https://www.loc.gov/item/2009633384/",
            "official_viewer_url": "https://www.loc.gov/resource/cph.3a30750/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/pnp/cph/3a30000/3a30000/3a30700/3a30750r.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "display_image": {
            "src": "thumbs/artifact-4f9894d4209b.jpg",
            "width": 640,
            "height": 542,
            "credit": "Library of Congress, Prints and Photographs Division, LC-USZ62-30081.",
            "source_url": "https://www.loc.gov/item/2009633384/",
            "rights": "No known restrictions on publication.",
            "transform": "Resize only; original aspect ratio preserved; no AI generation, crop or content alteration."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Historical photograph records Scott’s polar party at Amundsen’s tent."
        }
      },
      "record_sha256": "446938f466a6898be5ee222ef652d176d71017d5084f7c94f886016065406846"
    },
    {
      "id": "history:artifact-508fe3c0eef3",
      "legacy_id": "artifact-508fe3c0eef3",
      "kind": "historical",
      "title": "Dogs in camp",
      "url": "vault.html#artifact-508fe3c0eef3",
      "summary": "Cataloged expedition photograph: Sled dogs lie in snow.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:73f418060a0c39469013",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-508fe3c0eef3",
        "input_record_sha256": "326bf23af5abbd64cbaadf95c882dd442dd37dae51708e12bd92c4db6eafdfef",
        "original_fields": {
          "id": "artifact-508fe3c0eef3",
          "artifact_id": "P54/16/753r(10)/22",
          "title": "Dogs in camp",
          "date": "1912",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Debenham, Frank",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-753r10-22",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-753r10-22",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-753r10-22",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Debenham Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Sled dogs lie in snow.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Sled dogs lie in snow."
        }
      },
      "record_sha256": "c8adfd051f466fe974f69d0d065dc1a294ed6d814b98600f14d86a4c7b6d00fb"
    },
    {
      "id": "history:artifact-50e9c8128ef0",
      "legacy_id": "artifact-50e9c8128ef0",
      "kind": "historical",
      "title": "Lilley (sic) getting a tow net out. Jan. 1st 1911.",
      "url": "vault.html#artifact-50e9c8128ef0",
      "summary": "Cataloged expedition photograph: Lillie, wearing a balaclava, stands at the stern of the ship ‘Terra Nova’. He works on a conical net which hangs from a derrick over the deck.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b7d06ab32e05d76e4e9a",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1.1.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-50e9c8128ef0",
        "input_record_sha256": "1c3872b8e2cf135486eb9a32e01ea40f8597dc92136925e7cc496bb038b364cf",
        "original_fields": {
          "id": "artifact-50e9c8128ef0",
          "artifact_id": "P2005/5/83",
          "title": "Lilley (sic) getting a tow net out. Jan. 1st 1911.",
          "date": "1.1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-83",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-83",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-83",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Lillie, wearing a balaclava, stands at the stern of the ship ‘Terra Nova’. He works on a conical net which hangs from a derrick over the deck.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Lillie, wearing a balaclava, stands at the stern of the ship ‘Terra Nova’. He works on a conical net which hangs from a derrick over the deck."
        }
      },
      "record_sha256": "d65bac305f5585caaaf115d175dcb95765725881aa08edf5b49c1b3197c33263"
    },
    {
      "id": "history:artifact-5135732a606d",
      "legacy_id": "artifact-5135732a606d",
      "kind": "historical",
      "title": "Map showing part of the S. Y. Aurora's first Antarctic voyage, 1912, incorporating broad features of land party's work at the Western Base and Shackleton Ice Shelf, Antarctica",
      "url": "vault.html#artifact-5135732a606d",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 5, 70cm x 103 cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-5135732a606d",
        "input_record_sha256": "c1a83ca307de25c4743228a425805bd4b487a0f53465ce783f66f0b3f35414ad",
        "original_fields": {
          "id": "artifact-5135732a606d",
          "artifact_id": "SLNSW AAE map 5",
          "accession": "Australasian Antarctic Expedition records, map 5",
          "title": "Map showing part of the S. Y. Aurora's first Antarctic voyage, 1912, incorporating broad features of land party's work at the Western Base and Shackleton Ice Shelf, Antarctica",
          "date": "1912",
          "creator": "Harrisson, Charles Turnbull. (under the direction of Davis, John King.).",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 5, 70cm x 103 cm.",
          "visual_url": "http://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3757445",
          "official_viewer_url": "http://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3757445",
          "embed_allowed": false,
          "verification_status": "Inventory item verified; linked legacy scan delivery unverified.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "primary-viewer-link-delivery-unverified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; linked legacy scan delivery unverified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 5, 70cm x 103 cm."
        }
      },
      "record_sha256": "78438d9a7dd2ca414ddb8693f9df6de28a21fba1fd3f5e5e3a6671d8ca3c4ede"
    },
    {
      "id": "history:artifact-51d3038ae198",
      "legacy_id": "artifact-51d3038ae198",
      "kind": "historical",
      "title": "South Polar Chart",
      "url": "vault.html#artifact-51d3038ae198",
      "summary": "J. G. Bartholomew polar geography.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1886",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-51d3038ae198",
        "input_record_sha256": "65f94e2c5a4f3c1051341e8a5711c21411050c4923f724cfb07d564f3edb527b",
        "original_fields": {
          "title": "South Polar Chart",
          "date": "1886",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "J. G. Bartholomew polar geography.",
          "identifier": "Ac.6182",
          "id": "artifact-51d3038ae198",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Ac.6182",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-51d3038ae198",
            "title": "South Polar Chart",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/7cb9d9f79ab690cdf4751130c6e489eca0f61f20-313x400.jpg/south-polar-chart,-in-the-scottish-geographical-magazine,-vol-2-p-576,-1886.-bl-ac.6182..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "J. G. Bartholomew polar geography."
        }
      },
      "record_sha256": "ef6ccfa7af0663f94d916e7ee33006e7143dc4de9854bc64b6f5af2102d1f8e8"
    },
    {
      "id": "history:artifact-5204b5a3cba8",
      "legacy_id": "artifact-5204b5a3cba8",
      "kind": "historical",
      "title": "Australasian Antarctic Expedition: sledging operations from Western Base",
      "url": "vault.html#artifact-5204b5a3cba8",
      "summary": "Map records Western Base exploration tracks from 1912–1914.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f1e51e6951cb630725ff",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-14050.jpg",
          "caption": "Australasian Antarctic Expedition, ca.1915. National Library of Australia, SCAR map collection 10/3/2, Bib ID 4980815; Australian Antarctic Data Centre reproduction, map 14050 (CC BY 4.0). Historical map reproduction, not evidence for modern hidden-land claims. Small institutional preview; no upscaling. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Australasian Antarctic Expedition: sledging operations from Western Base",
          "href": "vault.html#artifact-5204b5a3cba8"
        },
        "reuse_notice": "NLA exact original record 4980815 explicitly Out of Copyright since 1965; NLA maps policy says publication permission not required for out-of-copyright maps. AADC copy under general CC BY 4.0 map policy.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1915",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-5204b5a3cba8",
        "input_record_sha256": "0c347ba76dfcb0f48bcff87d4bcbbaa4bc37d1f6dc09d08ddd7bf810e9f128e5",
        "original_fields": {
          "id": "artifact-5204b5a3cba8",
          "title": "Australasian Antarctic Expedition: sledging operations from Western Base",
          "date": "1915",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14050",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Map records Western Base exploration tracks from 1912–1914.",
          "identifier": "AADC map 14050",
          "creator": "Australia",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 14050",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-5204b5a3cba8",
            "title": "Australasian Antarctic Expedition: sledging operations from Western Base",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14050",
            "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14050",
            "direct_image_url": "https://data.aad.gov.au/database/mapcat/queen_mary_land/AAE_WesternBase_sledging_14050_thumb.jpg",
            "visual_status": "primary-image-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-14050.jpg",
            "width": 300,
            "height": 209,
            "credit": "Australasian Antarctic Expedition, ca.1915. National Library of Australia, SCAR map collection 10/3/2, Bib ID 4980815; Australian Antarctic Data Centre reproduction, map 14050 (CC BY 4.0).",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14050",
            "rights": "NLA exact original record 4980815 explicitly Out of Copyright since 1965; NLA maps policy says publication permission not required for out-of-copyright maps. AADC copy under general CC BY 4.0 map policy.",
            "transform": "Institutional preview downloaded unchanged."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Map records Western Base exploration tracks from 1912–1914."
        }
      },
      "record_sha256": "f69f8f49fd121c0c4f3454ad56df4e96b4fec55d67812997d2d98552811185f4"
    },
    {
      "id": "history:artifact-52aac7e0628a",
      "legacy_id": "artifact-52aac7e0628a",
      "kind": "historical",
      "title": "Jain cosmological map of adhaidvipa",
      "url": "vault.html#artifact-52aac7e0628a",
      "summary": "Concentric continents and oceans express Jain cosmology.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:627534025ccb78ecdaca",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-52aac7e0628a.jpg",
          "caption": "The Metropolitan Museum of Art, Gift of Mark Baron and Elise Boisanté, 2016; object 2016.499.3. Actual institutional reproduction; labels and artifact existence do not verify later interpretations. Source & reuse ↗",
          "title": "Jain cosmological map of adhaidvipa",
          "href": "vault.html#artifact-52aac7e0628a"
        },
        "reuse_notice": "Public Domain; Met Open Access permits unrestricted commercial and noncommercial use.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1900",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-52aac7e0628a",
        "input_record_sha256": "aaa67548c01037e9da226e98c36aec7e1f5305aa0f835ecdf1c950c89f4bf550",
        "original_fields": {
          "title": "Jain cosmological map of adhaidvipa",
          "date": "1900",
          "institution": "The Metropolitan Museum of Art",
          "source_url": "https://www.metmuseum.org/art/collection/search/711314",
          "rights": "Public Domain; Met Open Access",
          "categories": [
            "map",
            "cosmology",
            "Jain"
          ],
          "description": "Concentric continents and oceans express Jain cosmology.",
          "identifier": "2016.499.3",
          "id": "artifact-52aac7e0628a",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "2016.499.3",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-52aac7e0628a",
            "title": "Jain cosmological map of adhaidvipa",
            "official_source_url": "https://www.metmuseum.org/art/collection/search/711314",
            "official_viewer_url": "https://www.metmuseum.org/art/collection/search/711314",
            "direct_image_url": "https://collectionapi.metmuseum.org/api/collection/v1/iiif/711314/1636991/main-image",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Met collection item explicitly Public Domain/Open Access.",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "display_image": {
            "src": "thumbs/artifact-52aac7e0628a.jpg",
            "width": 574,
            "height": 720,
            "credit": "The Metropolitan Museum of Art, Gift of Mark Baron and Elise Boisanté, 2016; object 2016.499.3.",
            "source_url": "https://www.metmuseum.org/art/collection/search/711314",
            "rights": "Public Domain; Met Open Access permits unrestricted commercial and noncommercial use.",
            "transform": "Resize only; original aspect ratio retained; no generated imagery."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Concentric continents and oceans express Jain cosmology."
        }
      },
      "record_sha256": "34bcd8a38368da235afff9f4cb42ff3c0a3848aae3cee45659d2266d9bf3ba85"
    },
    {
      "id": "history:artifact-52d25d6f1651",
      "legacy_id": "artifact-52d25d6f1651",
      "kind": "historical",
      "title": "Sheet SR 38-39/3 Nye Mountains, Enderby Land, Australian Antarctic Territory [SR 39-40/1]",
      "url": "vault.html#artifact-52d25d6f1651",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:62c0fb3e43b74d6818d0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-97.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 97. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 38-39/3 Nye Mountains, Enderby Land, Australian Antarctic Territory [SR 39-40/1]",
          "href": "vault.html#artifact-52d25d6f1651"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June-1966",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-52d25d6f1651",
        "input_record_sha256": "a6cf3445084901b127c3b088d7267203ea6b8df61ee60ef4e7ac3f661ee61311",
        "original_fields": {
          "id": "artifact-52d25d6f1651",
          "artifact_id": "AADC map 97",
          "accession": "AADC map 97",
          "title": "Sheet SR 38-39/3 Nye Mountains, Enderby Land, Australian Antarctic Territory [SR 39-40/1]",
          "date": "June-1966",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=97",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-97.jpg",
            "width": 960,
            "height": 950,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 97. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=97",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "d646e94fd4f7b76cb34c4445a6bfef8dca26dc30c38e4c9c295b4d94defcaf8a"
    },
    {
      "id": "history:artifact-52da4323e0bf",
      "legacy_id": "artifact-52da4323e0bf",
      "kind": "historical",
      "title": "North Head. Macquarie Island. By S. Y. Aurora. Soundings in fathoms",
      "url": "vault.html#artifact-52da4323e0bf",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 6, 56cm x 77cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-52da4323e0bf",
        "input_record_sha256": "924584a2a1beeb52db839377ecf8758dc49dbb4e43a3e67eebf36d10b2678641",
        "original_fields": {
          "id": "artifact-52da4323e0bf",
          "artifact_id": "SLNSW AAE map 6",
          "accession": "Australasian Antarctic Expedition records, map 6",
          "title": "North Head. Macquarie Island. By S. Y. Aurora. Soundings in fathoms",
          "date": "1912",
          "creator": "Davis, John King.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 6, 56cm x 77cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 6, 56cm x 77cm."
        }
      },
      "record_sha256": "36db1f9ed59746e23c03f5ebc3fe7bc86e2fae7d62a1d9b69f9f1ed0b9bf1eff"
    },
    {
      "id": "history:artifact-541bc938458a",
      "legacy_id": "artifact-541bc938458a",
      "kind": "historical",
      "title": "Sledge plate — Terra Nova expedition",
      "url": "vault.html#artifact-541bc938458a",
      "summary": "Individually cataloged sledge plate associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4212.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:541bc938458ae852a543",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-541bc938458a",
        "input_record_sha256": "0d2924cf964239347abadf5c7c4929c26561c2e88f04bcc385f2c24b6eb49cce",
        "original_fields": {
          "id": "artifact-541bc938458a",
          "title": "Sledge plate — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3967",
          "accession": "AAA4212",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged sledge plate associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4212.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/4/rv9500.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3967",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sledge plate",
          "notes": "",
          "artifact_id": "AAA4212",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/4/rv9500.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sledge plate associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4212."
        }
      },
      "record_sha256": "4e2faaea75489625f7df1c0fd8efdc452657c3c3da7e5f64a53b21e0a191847b"
    },
    {
      "id": "history:artifact-552ff7fe062d",
      "legacy_id": "artifact-552ff7fe062d",
      "kind": "historical",
      "title": "Graptolite penguin rookery",
      "url": "vault.html#artifact-552ff7fe062d",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-10-15",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-552ff7fe062d",
        "input_record_sha256": "6da40c02cb85247a07a6689eecd7f23a1b97480dc670e0de6376395853db485a",
        "original_fields": {
          "title": "Graptolite penguin rookery",
          "date": "1903-10-15",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/781",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-552ff7fe062d",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-552ff7fe062d",
            "title": "Graptolite penguin rookery",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0781.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "324c7b17f1b97a91bc739a1314bd4e701241b37d1f278b1a5ca82451940606bd"
    },
    {
      "id": "history:artifact-55f9db38eafa",
      "legacy_id": "artifact-55f9db38eafa",
      "kind": "historical",
      "title": "Maximum/minimum thermometer — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-55f9db38eafa",
      "summary": "Individually cataloged maximum/minimum thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4234.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:55f9db38eafaf058730d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-55f9db38eafa",
        "input_record_sha256": "b5b3fae2e261a9f89a8b711824bde65019c5dc3c3776b6a43a89119405988dbb",
        "original_fields": {
          "id": "artifact-55f9db38eafa",
          "title": "Maximum/minimum thermometer — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3989",
          "accession": "AAA4234",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged maximum/minimum thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4234.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Maximum/minimum thermometer",
          "notes": "",
          "artifact_id": "AAA4234",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged maximum/minimum thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4234."
        }
      },
      "record_sha256": "a435d5778d60d181c2c53d042be38d62f167314fd6fd7c221e79ef8329f03508"
    },
    {
      "id": "history:artifact-561747ac798f",
      "legacy_id": "artifact-561747ac798f",
      "kind": "historical",
      "title": "Antarctica, second edition",
      "url": "vault.html#artifact-561747ac798f",
      "summary": "Revised Bayliss map includes Ellsworth’s flight and later Antarctic research.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7bc7f7658d421ea44771",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-14161.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 14161. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Antarctica, second edition",
          "href": "vault.html#artifact-561747ac798f"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1956",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-561747ac798f",
        "input_record_sha256": "8611124b91aa010caea5d4c39b466a0bffd489bc948d49fa54c7067af614fd6f",
        "original_fields": {
          "id": "artifact-561747ac798f",
          "title": "Antarctica, second edition",
          "date": "1956",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14161",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Revised Bayliss map includes Ellsworth’s flight and later Antarctic research.",
          "identifier": "AADC map 14161",
          "creator": "Australian Division of National Mapping",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 14161",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-561747ac798f",
            "title": "Antarctica, second edition",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14161",
            "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14161",
            "direct_image_url": "https://data.aad.gov.au/database/mapcat/antarctica/Bayliss-Cumpston/Bayliss-Cumpston_Ed2_1956_14161_colour_thumb.jpg",
            "visual_status": "primary-image-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-14161.jpg",
            "width": 731,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 14161. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14161",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "First PDF page rendered at 960px maximum dimension; no crop, reconstruction or AI enhancement."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Revised Bayliss map includes Ellsworth’s flight and later Antarctic research."
        }
      },
      "record_sha256": "e78d8464cea72a1f5e1619c381ac4658c493df075d5789cc776f8cac03722410"
    },
    {
      "id": "history:artifact-56b6b26c5b26",
      "legacy_id": "artifact-56b6b26c5b26",
      "kind": "historical",
      "title": "Plumb Line — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-56b6b26c5b26",
      "summary": "Individually cataloged plumb line associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4225.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:56b6b26c5b26c64738fa",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-56b6b26c5b26",
        "input_record_sha256": "7978302d6c5071174511d0bf8a2a1bced5b4ae42d345cba836c7946463368720",
        "original_fields": {
          "id": "artifact-56b6b26c5b26",
          "title": "Plumb Line — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3980",
          "accession": "AAA4225",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged plumb line associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4225.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/295/rv9691.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3980",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Plumb Line",
          "notes": "",
          "artifact_id": "AAA4225",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/295/rv9691.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged plumb line associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4225."
        }
      },
      "record_sha256": "e0c6ccc20a1094251fd030e99b763a69b3567d961e2fa49692bbca12eede19fd"
    },
    {
      "id": "history:artifact-580c902ad312",
      "legacy_id": "artifact-580c902ad312",
      "kind": "historical",
      "title": "New correct map of the flat surface, stationary earth",
      "url": "vault.html#artifact-580c902ad312",
      "summary": "John George Abizaid’s map with English and Arabic text.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c38e1045608e923efa69",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "abizaid-c1920.jpg",
          "caption": "Actual artifact image; source credit: Library of Congress.",
          "title": "New correct map of the flat surface, stationary earth",
          "href": "vault.html#artifact-580c902ad312"
        },
        "reuse_notice": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1920",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-580c902ad312",
        "input_record_sha256": "4c6519299a20d24207b65754a32a79d8c739ea94ecc44815bbdb622d89cc529c",
        "original_fields": {
          "title": "New correct map of the flat surface, stationary earth",
          "date": "circa 1920",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2013585077/",
          "rights": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
          "categories": [
            "map",
            "flat-earth",
            "cosmology"
          ],
          "description": "John George Abizaid’s map with English and Arabic text.",
          "identifier": "2013585077",
          "id": "artifact-580c902ad312",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "2013585077",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-580c902ad312",
            "title": "New correct map of the flat surface, stationary earth",
            "official_source_url": "https://www.loc.gov/item/2013585077/",
            "official_viewer_url": "https://www.loc.gov/resource/g9930.ct003852r/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/gmd/gmd9/g9930/g9930/ct003852r.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "John George Abizaid’s map with English and Arabic text."
        }
      },
      "record_sha256": "315081e899b0cf5d0b0380d469fb622019bb84defeb4a2da36937d98ec509845"
    },
    {
      "id": "history:artifact-5938847f2bfe",
      "legacy_id": "artifact-5938847f2bfe",
      "kind": "historical",
      "title": "Balaclava — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-5938847f2bfe",
      "summary": "Individually cataloged balaclava associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4252.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5938847f2bfee1b2bee2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-5938847f2bfe",
        "input_record_sha256": "7cc136b6f3a5da6bf8c79c5600dcb9d47e77c5c61d10dc0caf51f969349a2fab",
        "original_fields": {
          "id": "artifact-5938847f2bfe",
          "title": "Balaclava — Australasian Antarctic Expedition",
          "date": "1911",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4007",
          "accession": "AAA4252",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged balaclava associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4252.",
          "visual_url": "https://collections.rmg.co.uk/media/372/817/d8417.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4007",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Balaclava",
          "notes": "",
          "artifact_id": "AAA4252",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/372/817/d8417.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged balaclava associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4252."
        }
      },
      "record_sha256": "f8c3b40705b95c7e3f770fde1587febcd5a7849ce09f6d008a93bccf9137c558"
    },
    {
      "id": "history:artifact-595cfc04f864",
      "legacy_id": "artifact-595cfc04f864",
      "kind": "historical",
      "title": "Australasian Antarctic Expedition: King George V Land showing tracks of the Eastern Sledging Parties from the Main Base, 1914",
      "url": "vault.html#artifact-595cfc04f864",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5300c94e31cc29fa27e7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1914",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-595cfc04f864",
        "input_record_sha256": "9f23693780cb8d3bfd85f717f191a31810186a8efe30a514234206110fbda3c5",
        "original_fields": {
          "id": "artifact-595cfc04f864",
          "artifact_id": "AADC map 3697",
          "accession": "AADC map 3697",
          "title": "Australasian Antarctic Expedition: King George V Land showing tracks of the Eastern Sledging Parties from the Main Base, 1914",
          "date": "1914",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3697",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/King_GeorgeV_Land_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3697",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 1 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "-",
          "physical_size": "37 x 52 cm",
          "catalog_notes": "Conical projection",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/King_GeorgeV_Land_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "08b446ce77464f3e5a4b921f7eeca7479adb064aef20ac045b9a615771ee3359"
    },
    {
      "id": "history:artifact-5a49f0c91023",
      "legacy_id": "artifact-5a49f0c91023",
      "kind": "historical",
      "title": "Sheet SR 41-42/10, Crohn Massif, Mac. Robertson Land, Australian Antarctic Territory",
      "url": "vault.html#artifact-5a49f0c91023",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aa5f539ae779f009285d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-81.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 81. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 41-42/10, Crohn Massif, Mac. Robertson Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-5a49f0c91023"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1970",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-5a49f0c91023",
        "input_record_sha256": "32f7eff7482c911b0048a3d15eb4cbe6098f013056b419f7b41dfbadc3178916",
        "original_fields": {
          "id": "artifact-5a49f0c91023",
          "artifact_id": "AADC map 81",
          "accession": "AADC map 81",
          "title": "Sheet SR 41-42/10, Crohn Massif, Mac. Robertson Land, Australian Antarctic Territory",
          "date": "March 1970",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=81",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SR41-42_10_1970_250k_81_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=81",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "65 x 61 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SR41-42_10_1970_250k_81_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-81.jpg",
            "width": 906,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 81. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=81",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "63cf595c8aa0e6b850a1010e1ddd90a32f466eace7e37960f52fb8e1e6e14798"
    },
    {
      "id": "history:artifact-5c2b8f6ba37b",
      "legacy_id": "artifact-5c2b8f6ba37b",
      "kind": "historical",
      "title": "Theodolite components — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-5c2b8f6ba37b",
      "summary": "Individually cataloged theodolite components associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4229.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5c2b8f6ba37b25f23099",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-5c2b8f6ba37b",
        "input_record_sha256": "026bd64c25d5e457cbe9ec9adfb6953d9b1cab9f6626a7de567376e6bb8e2d3a",
        "original_fields": {
          "id": "artifact-5c2b8f6ba37b",
          "title": "Theodolite components — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3984",
          "accession": "AAA4229",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged theodolite components associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4229.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/298/rv9694.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3984",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Theodolite components",
          "notes": "Complete cataloged component group counted once; individual parts not counted separately.",
          "artifact_id": "AAA4229",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/298/rv9694.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged theodolite components associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4229."
        }
      },
      "record_sha256": "14fe11797fa183bc8ae2a5d0c872226fa1a76c9d16923d09380200ac7513ecfa"
    },
    {
      "id": "history:artifact-5e49934f85a2",
      "legacy_id": "artifact-5e49934f85a2",
      "kind": "historical",
      "title": "Northern Base, Argentine Islands : British Graham Land Expedition. February 1935 - February 1936",
      "url": "vault.html#artifact-5e49934f85a2",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d45b784869ccaeb852c1",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June-1938",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-5e49934f85a2",
        "input_record_sha256": "1c47fc023e869ae5b111030dfe825e603311d7ec452989a56888c29fad73f051",
        "original_fields": {
          "id": "artifact-5e49934f85a2",
          "artifact_id": "AADC map 3712",
          "accession": "AADC map 3712",
          "title": "Northern Base, Argentine Islands : British Graham Land Expedition. February 1935 - February 1936",
          "date": "June-1938",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3712",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 15 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 15 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "76d65dad60cc25ba5675322ad5660c2b252d1b59050af8b47f38377843cc277b"
    },
    {
      "id": "history:artifact-5f7aff6f5b52",
      "legacy_id": "artifact-5f7aff6f5b52",
      "kind": "historical",
      "title": "Dr Simpson in his Laboratory, at the Winterquarters Hut. December 21st 1911",
      "url": "vault.html#artifact-5f7aff6f5b52",
      "summary": "Cataloged expedition photograph: In the interior of the hut, Simpson stands at a bench. On the bench stands a rack of test tubes and other scientific equipment. Behind on the walls are shelves stacked with further scientific equipment.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d105283506a2bbd19611",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "12.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-5f7aff6f5b52",
        "input_record_sha256": "f7051d55e380b8b920dff6ab74c4ada85752402be726bedd77f18a65d34aeb8d",
        "original_fields": {
          "id": "artifact-5f7aff6f5b52",
          "artifact_id": "P2005/5/720",
          "title": "Dr Simpson in his Laboratory, at the Winterquarters Hut. December 21st 1911",
          "date": "12.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-720",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-720",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-720",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: In the interior of the hut, Simpson stands at a bench. On the bench stands a rack of test tubes and other scientific equipment. Behind on the walls are shelves stacked with further scientific equipment.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: In the interior of the hut, Simpson stands at a bench. On the bench stands a rack of test tubes and other scientific equipment. Behind on the walls are shelves stacked with further scientific equipment."
        }
      },
      "record_sha256": "39bbd97238b17f36a088ce1fdbdb07cf8a49e93e2c757e6b30e2d4421c3108b8"
    },
    {
      "id": "history:artifact-60701f9a9cae",
      "legacy_id": "artifact-60701f9a9cae",
      "kind": "historical",
      "title": "Southern Base, Marguerite Bay : B. G. L. E. March 1936 - March 1937.",
      "url": "vault.html#artifact-60701f9a9cae",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:9920bdd5a826b3c4ea11",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May-1938",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-60701f9a9cae",
        "input_record_sha256": "8bbea0379d989e4e7e2dfb2864904096a72cc51a3bf5be115539c4a79c63003c",
        "original_fields": {
          "id": "artifact-60701f9a9cae",
          "artifact_id": "AADC map 3711",
          "accession": "AADC map 3711",
          "title": "Southern Base, Marguerite Bay : B. G. L. E. March 1936 - March 1937.",
          "date": "May-1938",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3711",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 500 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 500 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "2fdf962692a685a51566c78ed132aefc94f548d99d9cb455f1c6144e9258094f"
    },
    {
      "id": "history:artifact-6126350d9055",
      "legacy_id": "artifact-6126350d9055",
      "kind": "historical",
      "title": "Dry card compass — Terra Nova expedition",
      "url": "vault.html#artifact-6126350d9055",
      "summary": "Individually cataloged dry card compass associated by Royal Museums Greenwich with the Terra Nova expedition; accession ACO0127.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6126350d9055e7b17ae4",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1901",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6126350d9055",
        "input_record_sha256": "e4c11b7902e8f19de05e473b1ed965bd50c92c44fd1bc78fe4394513683551fa",
        "original_fields": {
          "id": "artifact-6126350d9055",
          "title": "Dry card compass — Terra Nova expedition",
          "date": "circa 1901",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-7207",
          "accession": "ACO0127",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged dry card compass associated by Royal Museums Greenwich with the Terra Nova expedition; accession ACO0127.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Dry card compass",
          "notes": "",
          "artifact_id": "ACO0127",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged dry card compass associated by Royal Museums Greenwich with the Terra Nova expedition; accession ACO0127."
        }
      },
      "record_sha256": "68bed56ad2e70038ff39cba7ba9d2000133aafbe11920f3511787ee8e7e04d1a"
    },
    {
      "id": "history:artifact-62f6a09af1b8",
      "legacy_id": "artifact-62f6a09af1b8",
      "kind": "historical",
      "title": "Petty Officer Evans and Crean",
      "url": "vault.html#artifact-62f6a09af1b8",
      "summary": "Cataloged expedition photograph: Evans and Crean, wearing full sledging outfits, stand by a loaded sledge.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d1ac6032baa1e224208f",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "4.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-62f6a09af1b8",
        "input_record_sha256": "2fbc53cc3f1d603583f79b3bbfbca3498b4b51afa41ae67ae7039c56ebbc52f0",
        "original_fields": {
          "id": "artifact-62f6a09af1b8",
          "artifact_id": "P2005/5/383",
          "title": "Petty Officer Evans and Crean",
          "date": "4.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-383",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-383",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-383",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Evans and Crean, wearing full sledging outfits, stand by a loaded sledge.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Evans and Crean, wearing full sledging outfits, stand by a loaded sledge."
        }
      },
      "record_sha256": "c50c159ec4f5152e2ddaf243a8725162bb87ceaf85be43a5b5a7c15f9b7ae08e"
    },
    {
      "id": "history:artifact-634616546cfb",
      "legacy_id": "artifact-634616546cfb",
      "kind": "historical",
      "title": "Graham Land as known 1934-37 (4 maps)",
      "url": "vault.html#artifact-634616546cfb",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 12 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:060f80ef09da2626957a",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1938",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-634616546cfb",
        "input_record_sha256": "a4f4de372677b0b43b2a3d04bfbc0b3387d3587f06fe9b28359ef26eb5d233e1",
        "original_fields": {
          "id": "artifact-634616546cfb",
          "artifact_id": "AADC map 3710",
          "accession": "AADC map 3710",
          "title": "Graham Land as known 1934-37 (4 maps)",
          "date": "1938",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3710",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 12 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Graham_Land_1937_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3710",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 12 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "24.5 x 36.5 cm",
          "catalog_notes": "1. Graham Land and the routes of previous expeditions up to 1934. 2.Graham Land as it appeared after the flight of 13 March 1936. 3. Graham Land as it appeared after the southern sledge journey. 4. Graham Land as known in 1937.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Graham_Land_1937_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 12 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "1b369d753be858f4cf9ca09d516b18d1703c15bf1be0740ca451edddbf545eec"
    },
    {
      "id": "history:artifact-637e97d7469f",
      "legacy_id": "artifact-637e97d7469f",
      "kind": "historical",
      "title": "Some of the ponies on the Terra Nova.",
      "url": "vault.html#artifact-637e97d7469f",
      "summary": "Cataloged expedition photograph: Four ponies look out from stables, their heads over the stable doors. Three dogs lie asleep on the floor. Machinery and ropes off to one side.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:251e7b4324bc38a75089",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-637e97d7469f",
        "input_record_sha256": "0ff39c70ae851cf5de679969d09f533659a9106244f7133f3015ec9aaaa43d20",
        "original_fields": {
          "id": "artifact-637e97d7469f",
          "artifact_id": "P2005/5/69",
          "title": "Some of the ponies on the Terra Nova.",
          "date": "12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-69",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-69",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-69",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Four ponies look out from stables, their heads over the stable doors. Three dogs lie asleep on the floor. Machinery and ropes off to one side.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Four ponies look out from stables, their heads over the stable doors. Three dogs lie asleep on the floor. Machinery and ropes off to one side."
        }
      },
      "record_sha256": "04eed660385c44d9f1060ad0647d4202afe6c4f7d34291dd81962b59f689301d"
    },
    {
      "id": "history:artifact-63912f010da9",
      "legacy_id": "artifact-63912f010da9",
      "kind": "historical",
      "title": "Hekla at Sandefjord",
      "url": "vault.html#artifact-63912f010da9",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902-01",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-63912f010da9",
        "input_record_sha256": "805576e381a9525675ffe5a212366c7d7cc529fd617b4940e2c76ecffc427f84",
        "original_fields": {
          "title": "Hekla at Sandefjord",
          "date": "1902-01",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/2",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-63912f010da9",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-63912f010da9",
            "title": "Hekla at Sandefjord",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0002.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "e95da5a194f88965fcdd9e0dbabedef921447ba0b7d1d4d38118d98fda21012e"
    },
    {
      "id": "history:artifact-63fc1d0f23ea",
      "legacy_id": "artifact-63fc1d0f23ea",
      "kind": "historical",
      "title": "Aurora preliminary deep-sea sounding chart",
      "url": "vault.html#artifact-63fc1d0f23ea",
      "summary": "Bathymetric observations from Mawson expedition voyages of 1912–1913.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8f8d0aff09aeef449365",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-63fc1d0f23ea",
        "input_record_sha256": "360af1f43f05c57b9a63a1e2e1697f2833464b0cc4651c058c0319988b11b5e8",
        "original_fields": {
          "id": "artifact-63fc1d0f23ea",
          "title": "Aurora preliminary deep-sea sounding chart",
          "date": "1913",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3695",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Bathymetric observations from Mawson expedition voyages of 1912–1913.",
          "identifier": "AADC map 3695",
          "creator": "Royal Geographical Society",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 3695",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-63fc1d0f23ea",
            "title": "Aurora preliminary deep-sea sounding chart",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3695",
            "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3695",
            "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Deep_sea_soundings_thumb.jpg",
            "visual_status": "primary-image-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Bathymetric observations from Mawson expedition voyages of 1912–1913."
        }
      },
      "record_sha256": "d9e40151bc7ce89f1048b8041fc8ba40b906267347c924bfdf46dc1f15036d44"
    },
    {
      "id": "history:artifact-6439650084ac",
      "legacy_id": "artifact-6439650084ac",
      "kind": "historical",
      "title": "Boots, Finnesko — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-6439650084ac",
      "summary": "Individually cataloged boots, finnesko associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4236.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6439650084ac8e130234",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6439650084ac",
        "input_record_sha256": "205aaf851cf8cf2307b5db40bb1823a78a2f58c9262c6f4d35b658bfefd6666f",
        "original_fields": {
          "id": "artifact-6439650084ac",
          "title": "Boots, Finnesko — Australasian Antarctic Expedition",
          "date": "1911",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3991",
          "accession": "AAA4236",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged boots, finnesko associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4236.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/565/rv1522.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3991",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Boots, Finnesko",
          "notes": "",
          "artifact_id": "AAA4236",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/565/rv1522.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged boots, finnesko associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4236."
        }
      },
      "record_sha256": "0085e890194212124565d5e231de56838a650be978d7796427ec377350a90ce4"
    },
    {
      "id": "history:artifact-65537f26f7d0",
      "legacy_id": "artifact-65537f26f7d0",
      "kind": "historical",
      "title": "World map on double cordiform projection",
      "url": "vault.html#artifact-65537f26f7d0",
      "summary": "Two heart-shaped hemispheres project a globe, not a heart-shaped physical Earth.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:9bf3d50bdb209ec7ad84",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-65537f26f7d0.jpg",
          "caption": "Gerhard Mercator (1538). From The New York Public Library, Rare Book Division. Actual institutional image reproduction; not proof of later interpretations. Source & reuse ↗",
          "title": "World map on double cordiform projection",
          "href": "vault.html#artifact-65537f26f7d0"
        },
        "reuse_notice": "NYPL states public domain in the United States; other jurisdictions not determined.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1538",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-65537f26f7d0",
        "input_record_sha256": "4d15882e1e3ac4f136ef337505ce7029f372d8b2695f710a1327de9b42526127",
        "original_fields": {
          "id": "artifact-65537f26f7d0",
          "title": "World map on double cordiform projection",
          "creator": "Gerhard Mercator",
          "date": "1538",
          "institution": "New York Public Library",
          "source_url": "https://old-digitalcollections.nypl.org/items/c5326a5c-cd31-6b8c-e040-e00a18063384",
          "supplemental_or_image_url": null,
          "classification": "Geographic projection",
          "relevance_and_caution": "Two heart-shaped hemispheres project a globe, not a heart-shaped physical Earth.",
          "rights": "NYPL states public domain in United States; other jurisdictions not determined.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Two heart-shaped hemispheres project a globe, not a heart-shaped physical Earth.",
          "categories": [
            "Geographic projection"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-65537f26f7d0",
            "title": "World map on double cordiform projection",
            "official_source_url": "https://old-digitalcollections.nypl.org/items/c5326a5c-cd31-6b8c-e040-e00a18063384",
            "official_viewer_url": "https://old-digitalcollections.nypl.org/items/c5326a5c-cd31-6b8c-e040-e00a18063384",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "NYPL states public domain in United States; other jurisdictions not determined.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "display_image": {
            "src": "thumbs/artifact-65537f26f7d0.jpg",
            "width": 960,
            "height": 588,
            "credit": "Gerhard Mercator (1538). From The New York Public Library, Rare Book Division.",
            "source_url": "https://old-digitalcollections.nypl.org/items/c5326a5c-cd31-6b8c-e040-e00a18063384",
            "rights": "NYPL states public domain in the United States; other jurisdictions not determined.",
            "transform": "Resize only; original aspect ratio preserved; no AI generation, crop or content alteration."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Two heart-shaped hemispheres project a globe, not a heart-shaped physical Earth."
        }
      },
      "record_sha256": "5fa869de076126f30808011edf4fa1bb31450827c361b5873f84c23a01344d10"
    },
    {
      "id": "history:artifact-656f3900dba5",
      "legacy_id": "artifact-656f3900dba5",
      "kind": "historical",
      "title": "Central Asia",
      "url": "vault.html#artifact-656f3900dba5",
      "summary": "Later regional naming provides comparison with earlier Tartary labels.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6f1034f95f2c30f364d6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-656f3900dba5.jpg",
          "caption": "G.W. & C.B. Colton & Co. (1885). Library of Congress, Geography and Map Division, World Digital Library. Actual institutional reproduction; labels and artifact existence do not verify later interpretations. Source & reuse ↗",
          "title": "Central Asia",
          "href": "vault.html#artifact-656f3900dba5"
        },
        "reuse_notice": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1885",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-656f3900dba5",
        "input_record_sha256": "47a819425aea0e91b9017ab9ff455e00070d85a2fbba6ba296611de538b531f6",
        "original_fields": {
          "title": "Central Asia",
          "date": "1885",
          "institution": "Library of Congress",
          "source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Tartary",
            "historical"
          ],
          "description": "Later regional naming provides comparison with earlier Tartary labels.",
          "notes": "Creator: G.W. & C.B. Colton",
          "id": "artifact-656f3900dba5",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-656f3900dba5",
            "title": "Central Asia",
            "official_source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "official_viewer_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "direct_image_url": "https://blogs.loc.gov/maps/files/2025/06/Central-Asia.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/artifact-656f3900dba5.jpg",
            "width": 960,
            "height": 632,
            "credit": "G.W. & C.B. Colton & Co. (1885). Library of Congress, Geography and Map Division, World Digital Library.",
            "source_url": "https://www.loc.gov/item/2013593027/",
            "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
            "transform": "Resize only; original aspect ratio retained; no generated imagery."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Later regional naming provides comparison with earlier Tartary labels."
        }
      },
      "record_sha256": "dfae288a9167e009c32a357f44c06b152ac14552babf5e3efb6622d177eebea2"
    },
    {
      "id": "history:artifact-66dc48c4f9fa",
      "legacy_id": "artifact-66dc48c4f9fa",
      "kind": "historical",
      "title": "Whaling harpoon — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-66dc48c4f9fa",
      "summary": "Individually cataloged whaling harpoon associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession TOA0030.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:66dc48c4f9faccce2b9f",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-1914",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-66dc48c4f9fa",
        "input_record_sha256": "6b0516ae99e9355f8812cbd8864778376f940c88a2326c3def8c176683edc2ea",
        "original_fields": {
          "id": "artifact-66dc48c4f9fa",
          "title": "Whaling harpoon — Australasian Antarctic Expedition",
          "date": "1911-1914",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-69072",
          "accession": "TOA0030",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged whaling harpoon associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession TOA0030.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/602/rv1559.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-69072",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Whaling harpoon",
          "notes": "",
          "artifact_id": "TOA0030",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/602/rv1559.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged whaling harpoon associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession TOA0030."
        }
      },
      "record_sha256": "c206d9253a13a3a936500580fdea835bd1ec4757d79cc5d9e82ad319f0e5c515"
    },
    {
      "id": "history:artifact-673f92ec3230",
      "legacy_id": "artifact-673f92ec3230",
      "kind": "historical",
      "title": "Thermometer — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-673f92ec3230",
      "summary": "Individually cataloged thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4232.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:673f92ec323061a49fc4",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-673f92ec3230",
        "input_record_sha256": "1e39935c93cc74b9992669aed6cfb26e3ad0f787fc310e223b17354c2aa292da",
        "original_fields": {
          "id": "artifact-673f92ec3230",
          "title": "Thermometer — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3987",
          "accession": "AAA4232",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4232.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Thermometer",
          "notes": "",
          "artifact_id": "AAA4232",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4232."
        }
      },
      "record_sha256": "66bc40329f298c2fe01cd299db754d7bf99e4ee6851009acde33e24262a607ad"
    },
    {
      "id": "history:artifact-687ae8364808",
      "legacy_id": "artifact-687ae8364808",
      "kind": "historical",
      "title": "Clissold and Anton with an Emperor penguin",
      "url": "vault.html#artifact-687ae8364808",
      "summary": "Cataloged expedition photograph: Clissold and Anton Omelchenko Stand on the ice holding a pole between them. A penguin is attached to the pole by a rope. An iceberg in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:9272c024e87f7f5ae355",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "4.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-687ae8364808",
        "input_record_sha256": "61334c12d149f483b22b4a37c28c149c1a068d3cf06ae31fe7dc10b5d1113d4c",
        "original_fields": {
          "id": "artifact-687ae8364808",
          "artifact_id": "P2005/5/1136",
          "title": "Clissold and Anton with an Emperor penguin",
          "date": "4.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1136",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1136",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1136",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Clissold and Anton Omelchenko Stand on the ice holding a pole between them. A penguin is attached to the pole by a rope. An iceberg in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Clissold and Anton Omelchenko Stand on the ice holding a pole between them. A penguin is attached to the pole by a rope. An iceberg in the background."
        }
      },
      "record_sha256": "72b5eaf2f480c06634888143e62ec36578c4c2200b0faf1934a019f0c1f53eb3"
    },
    {
      "id": "history:artifact-68ae3cc84805",
      "legacy_id": "artifact-68ae3cc84805",
      "kind": "historical",
      "title": "Stations of the Circumpolar Cruises Winter 1932, and of the Falkland Islands Sector Season 1932-33",
      "url": "vault.html#artifact-68ae3cc84805",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 45 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:11f5c332e0af90b11627",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May 1934",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-68ae3cc84805",
        "input_record_sha256": "831f342ce4e3ec02793383d8b252a7840a406c1463972604d700417b45725fb5",
        "original_fields": {
          "id": "artifact-68ae3cc84805",
          "artifact_id": "AADC map 3707",
          "accession": "AADC map 3707",
          "title": "Stations of the Circumpolar Cruises Winter 1932, and of the Falkland Islands Sector Season 1932-33",
          "date": "May 1934",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3707",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 45 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Stations_Falkland_Is_Sector_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3707",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 45 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "24.7 x 48 cm",
          "catalog_notes": "Two maps on the one sheet",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Stations_Falkland_Is_Sector_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 45 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "ff159dc1c2207c946890f0b43befede60c40bcafadd75a247afb2ae0a52886f0"
    },
    {
      "id": "history:artifact-6b2d2542b3e2",
      "legacy_id": "artifact-6b2d2542b3e2",
      "kind": "historical",
      "title": "Bell Tent Design — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-6b2d2542b3e2",
      "summary": "Individually cataloged tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4214.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6b2d2542b3e2b1cb1b98",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6b2d2542b3e2",
        "input_record_sha256": "f7a11dc78a5d39070d2b2c860503eaacf4422e2c41c2f503f6f5c31319cc8d4f",
        "original_fields": {
          "id": "artifact-6b2d2542b3e2",
          "title": "Bell Tent Design — Australasian Antarctic Expedition",
          "date": "circa 1911",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3969",
          "accession": "AAA4214",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4214.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Bell Tent Design",
          "notes": "Catalog title says Bell Tent Design, but description identifies a tent; preserve this ambiguity rather than claiming an architectural drawing.",
          "artifact_id": "AAA4214",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4214."
        }
      },
      "record_sha256": "4d885b46c3852c7fcb665b5aabedab4030b99a5277b970645cf4fc168a9efae3"
    },
    {
      "id": "history:artifact-6bbfdbb52ec3",
      "legacy_id": "artifact-6bbfdbb52ec3",
      "kind": "historical",
      "title": "Gauntlets — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-6bbfdbb52ec3",
      "summary": "Individually cataloged gauntlets associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4246.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6bbfdbb52ec3694d607b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6bbfdbb52ec3",
        "input_record_sha256": "0ba38a81e0fcab768d4139108854bc056dd6aadbe359a4944847d3058df30e44",
        "original_fields": {
          "id": "artifact-6bbfdbb52ec3",
          "title": "Gauntlets — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4001",
          "accession": "AAA4246",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged gauntlets associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4246.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/593/rv1550.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4001",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Gauntlets",
          "notes": "",
          "artifact_id": "AAA4246",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/593/rv1550.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged gauntlets associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4246."
        }
      },
      "record_sha256": "c5ceef2ef41aef5cb7a229cec043577893b179f0164d55e28aa4cc0a0679addf"
    },
    {
      "id": "history:artifact-6e39bbd2af6d",
      "legacy_id": "artifact-6e39bbd2af6d",
      "kind": "historical",
      "title": "V.D. Carse (portrait)",
      "url": "vault.html#artifact-6e39bbd2af6d",
      "summary": "Cataloged expedition photograph: Portrait of Carse",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e606754ad09f12432ac9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6e39bbd2af6d",
        "input_record_sha256": "1da517348a94a74df409732bbf76474ed2a77bd346369e11d28d7a22936d0ef5",
        "original_fields": {
          "id": "artifact-6e39bbd2af6d",
          "artifact_id": "P51/8/B078",
          "title": "V.D. Carse (portrait)",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Roberts, Brian Birley",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b078",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b078",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b078",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Portrait of Carse",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Portrait of Carse"
        }
      },
      "record_sha256": "42632e9da6136159fc6f5df86e806391622bb5be0f6618a021ae1756790559e5"
    },
    {
      "id": "history:artifact-6ebe1174bad6",
      "legacy_id": "artifact-6ebe1174bad6",
      "kind": "historical",
      "title": "Sketch Map to illustrate the paper by Dr. Charcot on the French Antarctic Expedition 1903-5.",
      "url": "vault.html#artifact-6ebe1174bad6",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 2 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6e14f96ac246f27362df",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1905",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6ebe1174bad6",
        "input_record_sha256": "0b33fb0b3fc4c36f9f1b43765e29e036086a184c5fd2f6cfd806be230da1351f",
        "original_fields": {
          "id": "artifact-6ebe1174bad6",
          "artifact_id": "AADC map 3687",
          "accession": "AADC map 3687",
          "title": "Sketch Map to illustrate the paper by Dr. Charcot on the French Antarctic Expedition 1903-5.",
          "date": "1905",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3687",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 2 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1903-5_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3687",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 2 500 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "35.5 x 40.7 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1903-5_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 2 500 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "911bd1df165080b86144df8d126fd2dd2ec778dce49b51d5d072b5274309c1db"
    },
    {
      "id": "history:artifact-6f6844c7a984",
      "legacy_id": "artifact-6f6844c7a984",
      "kind": "historical",
      "title": "Grytviken harbour and whaling station",
      "url": "vault.html#artifact-6f6844c7a984",
      "summary": "Cataloged expedition photograph: View along the deck of the ship ‘Quest’, on which stand three men. Two dead whales lie in the water alongside a steam whaler and a motor launch motors across the fjord behind. Coast in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:87305b1c474fef3e1997",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6f6844c7a984",
        "input_record_sha256": "3c07fdd6ee41425a5be8ce6626183572e0c2dedf88ff9649380c01e3d6b60540",
        "original_fields": {
          "id": "artifact-6f6844c7a984",
          "artifact_id": "P56/77/70",
          "title": "Grytviken harbour and whaling station",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Bee-Mason, John Charles",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-70",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-70",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-70",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "Shackleton-Rowett Antarctic Expedition 1921-22",
            "Shackleton–Rowett expedition"
          ],
          "description": "Cataloged expedition photograph: View along the deck of the ship ‘Quest’, on which stand three men. Two dead whales lie in the water alongside a steam whaler and a motor launch motors across the fjord behind. Coast in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View along the deck of the ship ‘Quest’, on which stand three men. Two dead whales lie in the water alongside a steam whaler and a motor launch motors across the fjord behind. Coast in the background."
        }
      },
      "record_sha256": "8686321d78611dc88d8091ea92ca2b62f6ba71f542a022b0240bf114401c52dc"
    },
    {
      "id": "history:artifact-707499aab15d",
      "legacy_id": "artifact-707499aab15d",
      "kind": "historical",
      "title": "Belgica hydrographic atlas",
      "url": "vault.html#artifact-707499aab15d",
      "summary": "Lecointe’s map appendix documents expedition navigation and coastlines.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ac1a814bdca16a0313c8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903/1905; edition date unresolved",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-707499aab15d",
        "input_record_sha256": "8fb46ab9f7fa86931764a8ef7d2735d73ca3ecc0b833a504005772f371e5a0df",
        "original_fields": {
          "title": "Belgica hydrographic atlas",
          "date": "1903/1905; edition date unresolved",
          "institution": "KU Leuven Libraries, 2Bergen Campus Arenberg",
          "source_url": "https://expo.bib.kuleuven.be/exhibits/show/expedition-antarctique-en/expedition-antarctique-en",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "atlas",
            "Belgica expedition"
          ],
          "description": "Lecointe’s map appendix documents expedition navigation and coastlines.",
          "artifact_id": "IE8979248",
          "notes": "Exhibit heading says1905; plate citations say1903. Count atlas once, not its constituent maps.",
          "id": "artifact-707499aab15d",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-707499aab15d",
            "title": "Belgica hydrographic atlas",
            "official_source_url": "https://expo.bib.kuleuven.be/exhibits/show/expedition-antarctique-en/expedition-antarctique-en",
            "official_viewer_url": "https://depot.lias.be/delivery/DeliveryManagerServlet?dps_pid=IE8979248",
            "direct_image_url": null,
            "visual_status": "primary-viewer-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized atlas",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact complete-maps viewer linked by KU Leuven; viewer could not load in tool."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Lecointe’s map appendix documents expedition navigation and coastlines."
        }
      },
      "record_sha256": "872391da818a4eaf7f78c27a8cdf1fcf3248f8dd0d0b8869f0ef8236dbeec882"
    },
    {
      "id": "history:artifact-73a01634881f",
      "legacy_id": "artifact-73a01634881f",
      "kind": "historical",
      "title": "Omond construction sledging",
      "url": "vault.html#artifact-73a01634881f",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-04-20",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-73a01634881f",
        "input_record_sha256": "5bf7fb25334aedc9fc92f656d01853f857a54d19c3690de7a8201874a9a61d91",
        "original_fields": {
          "title": "Omond construction sledging",
          "date": "1903-04-20",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/212",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-73a01634881f",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-73a01634881f",
            "title": "Omond construction sledging",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0212.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "51dc003c8e43dfe2ef1eef665375b22df73fbc436446e6da928c6087fe48860e"
    },
    {
      "id": "history:artifact-73e9f0694e08",
      "legacy_id": "artifact-73e9f0694e08",
      "kind": "historical",
      "title": "Modern Asia",
      "url": "vault.html#artifact-73e9f0694e08",
      "summary": "Map distinguishes Western and Chinese Tartary.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6f1034f95f2c30f364d6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-73e9f0694e08.jpg",
          "caption": "John Wilkes and Samuel John Neele (1796). Library of Congress, Geography and Map Division, World Digital Library. Actual institutional reproduction; labels and artifact existence do not verify later interpretations. Source & reuse ↗",
          "title": "Modern Asia",
          "href": "vault.html#artifact-73e9f0694e08"
        },
        "reuse_notice": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1796",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-73e9f0694e08",
        "input_record_sha256": "40057669bdf5da0a031b1a434666eca6da4c04b160001b2afc4263b69348dccc",
        "original_fields": {
          "title": "Modern Asia",
          "date": "1796",
          "institution": "Library of Congress",
          "source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Tartary",
            "historical"
          ],
          "description": "Map distinguishes Western and Chinese Tartary.",
          "notes": "Creator: John Wilkes",
          "id": "artifact-73e9f0694e08",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-73e9f0694e08",
            "title": "Modern Asia",
            "official_source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "official_viewer_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "direct_image_url": "https://blogs.loc.gov/maps/files/2025/06/Modern-Asia.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/artifact-73e9f0694e08.jpg",
            "width": 573,
            "height": 720,
            "credit": "John Wilkes and Samuel John Neele (1796). Library of Congress, Geography and Map Division, World Digital Library.",
            "source_url": "https://www.loc.gov/item/2006636625/",
            "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
            "transform": "Resize only; original aspect ratio retained; no generated imagery."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Map distinguishes Western and Chinese Tartary."
        }
      },
      "record_sha256": "ddb9ba10c9177335e9d98104d01f5030e9e87f0a0c104717b70adef664709687"
    },
    {
      "id": "history:artifact-741d1a30b557",
      "legacy_id": "artifact-741d1a30b557",
      "kind": "historical",
      "title": "Dry card compass — Ross Antarctic expedition",
      "url": "vault.html#artifact-741d1a30b557",
      "summary": "Individually cataloged dry card compass associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession ACO0114.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:741d1a30b557936ea05e",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1839",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-741d1a30b557",
        "input_record_sha256": "f9be7919d1df4797483018b4c2e43ebf55dd2f018004140c9c96c78ca684e942",
        "original_fields": {
          "id": "artifact-741d1a30b557",
          "title": "Dry card compass — Ross Antarctic expedition",
          "date": "circa 1839",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-7194",
          "accession": "ACO0114",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Ross Antarctic expedition"
          ],
          "description": "Individually cataloged dry card compass associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession ACO0114.",
          "visual_url": "https://collections.rmg.co.uk/media/1/168/270/rt5490.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-7194",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Dry card compass",
          "notes": "",
          "artifact_id": "ACO0114",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/1/168/270/rt5490.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged dry card compass associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession ACO0114."
        }
      },
      "record_sha256": "bb8410030aeffce286546264916a53f94a146f00391e203e6d10bdcdee0bb6d6"
    },
    {
      "id": "history:artifact-744b2fbbf25d",
      "legacy_id": "artifact-744b2fbbf25d",
      "kind": "historical",
      "title": "District near Discovery winter quarters",
      "url": "vault.html#artifact-744b2fbbf25d",
      "summary": "Detailed McMurdo-area survey.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1906",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-744b2fbbf25d",
        "input_record_sha256": "a93bc2a2667af4a76f7d79d9276135d76b1cd43168b18cf3cabb21f72bc63439",
        "original_fields": {
          "title": "District near Discovery winter quarters",
          "date": "1906",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Detailed McMurdo-area survey.",
          "identifier": "Maps X.11702",
          "id": "artifact-744b2fbbf25d",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps X.11702",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-744b2fbbf25d",
            "title": "District near Discovery winter quarters",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/4168c310b89d63770cdeb911006e23d96ff52075-488x400.jpg/map-of-the-district-near-the-‘discovery’-winter-quarters,-1906.-bl-maps-x.11702..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Detailed McMurdo-area survey."
        }
      },
      "record_sha256": "1564c52741c2e3f3d3b253931ac14d35b22acc1c4bad93130c46886af8dbe8fd"
    },
    {
      "id": "history:artifact-747f31d5bf98",
      "legacy_id": "artifact-747f31d5bf98",
      "kind": "historical",
      "title": "Dr Simpson and B Day at the balloon theodolite",
      "url": "vault.html#artifact-747f31d5bf98",
      "summary": "Cataloged expedition photograph: Simpson looks through a theodolite mounted on a tripod. Day watches.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:077bbf65c678ee98cc1e",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "3.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-747f31d5bf98",
        "input_record_sha256": "855f3c6fe79b338c2078f050a51c0913bc7715a5d7bc4dd4d1c0b0c8abc28b1b",
        "original_fields": {
          "id": "artifact-747f31d5bf98",
          "artifact_id": "P2005/5/953",
          "title": "Dr Simpson and B Day at the balloon theodolite",
          "date": "3.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-953",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-953",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-953",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Simpson looks through a theodolite mounted on a tripod. Day watches.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Simpson looks through a theodolite mounted on a tripod. Day watches."
        }
      },
      "record_sha256": "670cf344f0ec8637449377ffac4db3ce8ace2217c27a44321848ef61f01bb1a2"
    },
    {
      "id": "history:artifact-755cd4d6810f",
      "legacy_id": "artifact-755cd4d6810f",
      "kind": "historical",
      "title": "Dr Wilson and Lieut Bowers reading the Ramp thermometer. June 7th 1911",
      "url": "vault.html#artifact-755cd4d6810f",
      "summary": "Cataloged expedition photograph: Wilson and Bowers stand at the top of a snow-covered rocky outcrop. Bowers looks at a thermometer on a wooden stand, Wilson writes in a notebook. They are illuminated by a flash bulb.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f8e8cdbb01f2c31b8f1c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "6.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-755cd4d6810f",
        "input_record_sha256": "5cc1720e4c28d57a77c741af1176ff22975ec84fe79b4f96445b395720de8c08",
        "original_fields": {
          "id": "artifact-755cd4d6810f",
          "artifact_id": "P2005/5/440",
          "title": "Dr Wilson and Lieut Bowers reading the Ramp thermometer. June 7th 1911",
          "date": "6.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-440",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-440",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-440",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Wilson and Bowers stand at the top of a snow-covered rocky outcrop. Bowers looks at a thermometer on a wooden stand, Wilson writes in a notebook. They are illuminated by a flash bulb.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Wilson and Bowers stand at the top of a snow-covered rocky outcrop. Bowers looks at a thermometer on a wooden stand, Wilson writes in a notebook. They are illuminated by a flash bulb."
        }
      },
      "record_sha256": "8860694ed06af0e1cda4d294e21d9501115a17c80c9cecf39d82efcf3151429f"
    },
    {
      "id": "history:artifact-7bf44004b450",
      "legacy_id": "artifact-7bf44004b450",
      "kind": "historical",
      "title": "Penguins and an iceberg. Jan. 7th 1911.",
      "url": "vault.html#artifact-7bf44004b450",
      "summary": "Cataloged expedition photograph: A group of penguins stand on an ice floe with an iceberg in the background, partially out of shot.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:235a22303e44122d7218",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "7.1.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7bf44004b450",
        "input_record_sha256": "4f846fad6160a8d493431d5dbeb5652e7cc2a6061124ccc946da3d8ffefc90b4",
        "original_fields": {
          "id": "artifact-7bf44004b450",
          "artifact_id": "P2005/5/147",
          "title": "Penguins and an iceberg. Jan. 7th 1911.",
          "date": "7.1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-147",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-147",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-147",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: A group of penguins stand on an ice floe with an iceberg in the background, partially out of shot.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: A group of penguins stand on an ice floe with an iceberg in the background, partially out of shot."
        }
      },
      "record_sha256": "4d26488c4324866246e6ce8098057d1083c30d7f7472cadef07f0ef8b03f0027"
    },
    {
      "id": "history:artifact-7c8cc9ab8e09",
      "legacy_id": "artifact-7c8cc9ab8e09",
      "kind": "historical",
      "title": "Over trousers — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-7c8cc9ab8e09",
      "summary": "Individually cataloged over trousers associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4265.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7c8cc9ab8e090222c447",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7c8cc9ab8e09",
        "input_record_sha256": "5c3c5bef346a7b93cdb9ec620e80eace922510e5154a8561f15acdd90b24a6e2",
        "original_fields": {
          "id": "artifact-7c8cc9ab8e09",
          "title": "Over trousers — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4020",
          "accession": "AAA4265",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged over trousers associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4265.",
          "visual_url": "https://collections.rmg.co.uk/media/3/478/128/s3525_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4020",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Over trousers",
          "notes": "",
          "artifact_id": "AAA4265",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/478/128/s3525_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged over trousers associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4265."
        }
      },
      "record_sha256": "49ec6f065870ef7d0e4d285baa92be9c83242e00f0c28bc8666f06065df21a71"
    },
    {
      "id": "history:artifact-7ca3fa9bc476",
      "legacy_id": "artifact-7ca3fa9bc476",
      "kind": "historical",
      "title": "Nansenbushū bankoku shōka no zu",
      "url": "vault.html#artifact-7ca3fa9bc476",
      "summary": "Sacred geography; India-centered, not polar evidence.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:797b6f807b799ab8cb53",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1710",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7ca3fa9bc476",
        "input_record_sha256": "4cda84193a9c7fd58a29cf07a96ac8ae4a316aafb7ca5044001b01aea35b0b18",
        "original_fields": {
          "id": "artifact-7ca3fa9bc476",
          "title": "Nansenbushū bankoku shōka no zu",
          "creator": "Hōtan",
          "date": "1710",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj113",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/113.jpg",
          "classification": "Buddhist cosmological map",
          "relevance_and_caution": "Sacred geography; India-centered, not polar evidence.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Sacred geography; India-centered, not polar evidence.",
          "categories": [
            "Buddhist cosmological map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-7ca3fa9bc476",
            "title": "Nansenbushū bankoku shōka no zu",
            "official_source_url": "https://www.loc.gov/exhibits/world/earth.html#obj113",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj113",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/113.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Sacred geography; India-centered, not polar evidence."
        }
      },
      "record_sha256": "0027631fea228dc6aa70475496ad4ec3c72cea4a46401d4990062aed0fcd1255"
    },
    {
      "id": "history:artifact-7cda536ceabc",
      "legacy_id": "artifact-7cda536ceabc",
      "kind": "historical",
      "title": "Bruce aboard Scotia",
      "url": "vault.html#artifact-7cda536ceabc",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902-07-15",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7cda536ceabc",
        "input_record_sha256": "f26aa2f677998540655b106aa650594713b8944fec627c0615e53407db074c84",
        "original_fields": {
          "title": "Bruce aboard Scotia",
          "date": "1902-07-15",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/43",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-7cda536ceabc",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-7cda536ceabc",
            "title": "Bruce aboard Scotia",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0043.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "4f4f6b37c983c118894bc23150cde3fb76af90b4ccbbeb890d787e7df06ee879"
    },
    {
      "id": "history:artifact-7d57eef25660",
      "legacy_id": "artifact-7d57eef25660",
      "kind": "historical",
      "title": "Scotia helmsman",
      "url": "vault.html#artifact-7d57eef25660",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7d57eef25660",
        "input_record_sha256": "300313161a5f48a2eebd421a8762f0a5204f0a62e4dc609848ab5655ef1a1d16",
        "original_fields": {
          "title": "Scotia helmsman",
          "date": "1902–1904",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/662",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-7d57eef25660",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-7d57eef25660",
            "title": "Scotia helmsman",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0662.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "ca4bd19db53d3794d290d8fe6e3adb597225fbabd5bd3f0479b782772dc980d4"
    },
    {
      "id": "history:artifact-7d811a525ed9",
      "legacy_id": "artifact-7d811a525ed9",
      "kind": "historical",
      "title": "Surgeon Levick skinning a penguin on the Terra Nova.",
      "url": "vault.html#artifact-7d811a525ed9",
      "summary": "Cataloged expedition photograph: Levick stands on the deck of the ship ‘Terra Nova’. He skins a penguin which is hanging off the side of a tarpaulin covered crate.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:27b6e1cfd6d9fe3700d7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7d811a525ed9",
        "input_record_sha256": "2617384d2e3f1c3ea4750e02eb703f111d3010c07be3c37a7cacd6eaea40b4e7",
        "original_fields": {
          "id": "artifact-7d811a525ed9",
          "artifact_id": "P2005/5/65",
          "title": "Surgeon Levick skinning a penguin on the Terra Nova.",
          "date": "12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-65",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-65",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-65",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Levick stands on the deck of the ship ‘Terra Nova’. He skins a penguin which is hanging off the side of a tarpaulin covered crate.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Levick stands on the deck of the ship ‘Terra Nova’. He skins a penguin which is hanging off the side of a tarpaulin covered crate."
        }
      },
      "record_sha256": "b964984d973722dc267683930e1c1b2c7adf17ab1831e00f079101031f98761a"
    },
    {
      "id": "history:artifact-7dff45f0ae4d",
      "legacy_id": "artifact-7dff45f0ae4d",
      "kind": "historical",
      "title": "Sleeping bag — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-7dff45f0ae4d",
      "summary": "Individually cataloged sleeping bag associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4217.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7dff45f0ae4d907b4b79",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7dff45f0ae4d",
        "input_record_sha256": "a8cdd5686eea95c18aa78bf4f351d9d6bab6fb5e12d88883ab15933e18577943",
        "original_fields": {
          "id": "artifact-7dff45f0ae4d",
          "title": "Sleeping bag — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3972",
          "accession": "AAA4217",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged sleeping bag associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4217.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sleeping bag",
          "notes": "",
          "artifact_id": "AAA4217",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sleeping bag associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4217."
        }
      },
      "record_sha256": "88c30d4e04df22909962f64460106b4ec6e7b83cd47af30cdac7fb4c4f473fc3"
    },
    {
      "id": "history:artifact-7e1d5b99c577",
      "legacy_id": "artifact-7e1d5b99c577",
      "kind": "historical",
      "title": "Charles Wright working at night with his transit. August 8th 1911",
      "url": "vault.html#artifact-7e1d5b99c577",
      "summary": "Cataloged expedition photograph: Wright kneels on the snow, looking through a small telescope mounted on a box. Wire is attached to the telescope. Scene illuminated by flash bulb.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:84a88b54fdd9ce6da0be",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "8.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7e1d5b99c577",
        "input_record_sha256": "78c809d9b5982ab9eb62d28b94c0947bfbbf80de9738c272bfda8064281e7849",
        "original_fields": {
          "id": "artifact-7e1d5b99c577",
          "artifact_id": "P2005/5/471",
          "title": "Charles Wright working at night with his transit. August 8th 1911",
          "date": "8.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-471",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-471",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-471",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Wright kneels on the snow, looking through a small telescope mounted on a box. Wire is attached to the telescope. Scene illuminated by flash bulb.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Wright kneels on the snow, looking through a small telescope mounted on a box. Wire is attached to the telescope. Scene illuminated by flash bulb."
        }
      },
      "record_sha256": "01dcdf39af961c7979393e4e0c13bcdc8f2384e41ceb844ad87b7128d77c3523"
    },
    {
      "id": "history:artifact-7e32f50104ed",
      "legacy_id": "artifact-7e32f50104ed",
      "kind": "historical",
      "title": "Graham Land : British Graham Land Expedition, January 1935 - March 1937",
      "url": "vault.html#artifact-7e32f50104ed",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 3 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a0861f2fc37e8a67df9c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May 1938",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7e32f50104ed",
        "input_record_sha256": "52e9ee479df03e0e0f5c6124072aa54d1b8ca84413987c75095d06f591fb7000",
        "original_fields": {
          "id": "artifact-7e32f50104ed",
          "artifact_id": "AADC map 3714",
          "accession": "AADC map 3714",
          "title": "Graham Land : British Graham Land Expedition, January 1935 - March 1937",
          "date": "May 1938",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3714",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 3 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Graham_Land_BGLE_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3714",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 3 500 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "38.5 x 35.3 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Graham_Land_BGLE_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 3 500 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "49c1b35e5e3932bd935f349bd8c67b8a341b3d143b5f5accb268cc2ad9cda8f4"
    },
    {
      "id": "history:artifact-7f3989535671",
      "legacy_id": "artifact-7f3989535671",
      "kind": "historical",
      "title": "Mossman observing weather",
      "url": "vault.html#artifact-7f3989535671",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-02-21",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7f3989535671",
        "input_record_sha256": "efcacbd191821d04d1ab6a622ccb7cb634fc535d825e4d4783f0d47f093a6c36",
        "original_fields": {
          "title": "Mossman observing weather",
          "date": "1904-02-21",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/221",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-7f3989535671",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-7f3989535671",
            "title": "Mossman observing weather",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0221.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "e27185f94e0f7282e7620f29501028ce8f54da9cd6cf28cb42c4e41e4e71290f"
    },
    {
      "id": "history:artifact-7f48483057af",
      "legacy_id": "artifact-7f48483057af",
      "kind": "historical",
      "title": "Index of the International Map of the World on the Millionth Scale, Antarctic Series",
      "url": "vault.html#artifact-7f48483057af",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:01a4974a1cae9a98ccd9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-15264.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 15264. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Index of the International Map of the World on the Millionth Scale, Antarctic Series",
          "href": "vault.html#artifact-7f48483057af"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1968",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7f48483057af",
        "input_record_sha256": "116c89330c3883ec7773ab95c9878fc43968e01f2d78f36572d17281baef4206",
        "original_fields": {
          "id": "artifact-7f48483057af",
          "artifact_id": "AADC map 15264",
          "accession": "AADC map 15264",
          "title": "Index of the International Map of the World on the Millionth Scale, Antarctic Series",
          "date": "1968",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=15264",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-15264.jpg",
            "width": 300,
            "height": 212,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 15264. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=15264",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "b885bc02bb18e6f19d50e7778b66f5b064bf8003cd63cefba972c00317b1e0c3"
    },
    {
      "id": "history:artifact-7fee930722c3",
      "legacy_id": "artifact-7fee930722c3",
      "kind": "historical",
      "title": "Manuscript world map, Tavola 1–60",
      "url": "vault.html#artifact-7fee930722c3",
      "summary": "Urbano Monte’s sixty-sheet map represents a globe in polar projection.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:503e01d573d47a209dc9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/world-artifact-7fee930722c3.jpg",
          "caption": "Modern digital assembly of 60 original 1587 sheets—not an original one-sheet map. David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries; courtesy of the David Rumsey Map Collection, www.davidrumsey.com. Reuse terms ↗",
          "title": "Manuscript world map, Tavola 1–60",
          "href": "vault.html#artifact-7fee930722c3"
        },
        "reuse_notice": "Current Rumsey policy permits attributed digital publication; not permission for standalone for-sale facsimiles. Policy also links CC BY-NC-SA3.0; do not label unrestrictedPD.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1587",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7fee930722c3",
        "input_record_sha256": "f7a85224f70aa1fe79e23bd3a8cae1bb62e7b12195a38100d2386ebc0ce9ad25",
        "original_fields": {
          "title": "Manuscript world map, Tavola 1–60",
          "date": "1587",
          "institution": "David Rumsey Historical Map Collection, Stanford Libraries",
          "source_url": "https://www.davidrumsey.com/luna/servlet/view/all/when/1587/",
          "rights": "Unknown; collection image license not verified",
          "categories": [
            "map",
            "imagined-geography",
            "polar-projection"
          ],
          "description": "Urbano Monte’s sixty-sheet map represents a globe in polar projection.",
          "identifier": "10130.000",
          "notes": "Counted once: modern stitched composites, rotations and reprojections are not additional historical artifacts.",
          "id": "artifact-7fee930722c3",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "10130.000",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-7fee930722c3",
            "title": "Manuscript world map, Tavola 1–60",
            "official_source_url": "https://www.davidrumsey.com/luna/servlet/view/all/when/1587/",
            "official_viewer_url": "https://www.davidrumsey.com/blog/2017/11/26/largest-early-world-map-monte-s-10-ft-planisphere-of-1587",
            "direct_image_url": "https://s3.amazonaws.com/rumsey3/Monte/10130087.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; collection image license not verified",
            "visual_type": "modern digital assembly of original 1587 map sheets",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact reproduction extracted from Rumsey institutional essay. This is a modern digital assembly of sixty original sheets, not a historical single-sheet map. North-polar azimuthal projection does not imply a flat-earth cosmology. Reuse not cleared; external link only."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "display_image": {
            "src": "thumbs/world-artifact-7fee930722c3.jpg",
            "width": 1534,
            "height": 1536,
            "credit": "David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries",
            "source_url": "https://www.davidrumsey.com/blog/2017/11/26/largest-early-world-map-monte-s-10-ft-planisphere-of-1587",
            "rights": "Current Rumsey policy permits attributed digital publication; not permission for standalone for-sale facsimiles. Policy also links CC BY-NC-SA3.0; do not label unrestrictedPD.",
            "note": "Modern digital assembly of60 original1587 sheets—not an original one-sheet map. "
          },
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Urbano Monte’s sixty-sheet map represents a globe in polar projection."
        }
      },
      "record_sha256": "e425a0daf0043403617382ccc5e1fef6e58ebbb4ed8429190149d73ef371dfec"
    },
    {
      "id": "history:artifact-8027630d4d2c",
      "legacy_id": "artifact-8027630d4d2c",
      "kind": "historical",
      "title": "Waistcoat — Terra Nova expedition",
      "url": "vault.html#artifact-8027630d4d2c",
      "summary": "Individually cataloged waistcoat associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0317.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8027630d4d2c85c4130c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8027630d4d2c",
        "input_record_sha256": "f04d85c546fa2e963ceab0887170308b9bd9ce197dac5239cb67b0a9845de221",
        "original_fields": {
          "id": "artifact-8027630d4d2c",
          "title": "Waistcoat — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71132",
          "accession": "TXT0317",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged waistcoat associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0317.",
          "visual_url": "https://collections.rmg.co.uk/media/3/258/770/rv7918.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71132",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Waistcoat",
          "notes": "",
          "artifact_id": "TXT0317",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/258/770/rv7918.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged waistcoat associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0317."
        }
      },
      "record_sha256": "d1809c0b151d8f6920973c7e09949dedb6f696b59ffdc81359c857f3324c85ed"
    },
    {
      "id": "history:artifact-81c90c6b468d",
      "legacy_id": "artifact-81c90c6b468d",
      "kind": "historical",
      "title": "J.I. Moore with team, 1 December 1937",
      "url": "vault.html#artifact-81c90c6b468d",
      "summary": "Cataloged expedition photograph: Moore drives a sledge and sled dog team towards the camera (blurred image).",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5c90a79c0f1a14e19933",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-81c90c6b468d",
        "input_record_sha256": "5153b5d7727fa927c27e6f437bbf41eca8fd82c4d79de85848bb69dd63818c0f",
        "original_fields": {
          "id": "artifact-81c90c6b468d",
          "artifact_id": "P51/8/F392",
          "title": "J.I. Moore with team, 1 December 1937",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f392",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f392",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f392",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore drives a sledge and sled dog team towards the camera (blurred image).",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed. Source title says1December1937 while Date field says1936; unresolved source discrepancy.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore drives a sledge and sled dog team towards the camera (blurred image)."
        }
      },
      "record_sha256": "aae9a1f58348738e7b40571deaa5ab059281d2f0719ac0749a8e37dfb2983934"
    },
    {
      "id": "history:artifact-825842b1beb7",
      "legacy_id": "artifact-825842b1beb7",
      "kind": "historical",
      "title": "British Antarctic Expedition 1910-13 : Sketch map to illustrate the paper by Raymond E. Priestley on The Work of the Northern Party",
      "url": "vault.html#artifact-825842b1beb7",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bfb65d2dbcc7b890615b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1914",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-825842b1beb7",
        "input_record_sha256": "1e146660e6279b28b5a4fc8d8cded1504cc0902b302cc0e5418b5ef545713942",
        "original_fields": {
          "id": "artifact-825842b1beb7",
          "artifact_id": "AADC map 3699",
          "accession": "AADC map 3699",
          "title": "British Antarctic Expedition 1910-13 : Sketch map to illustrate the paper by Raymond E. Priestley on The Work of the Northern Party",
          "date": "1914",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3699",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Work_Nthn_Party_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3699",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 5 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "35 x 37.5 cm",
          "catalog_notes": "2 insets of Terra Nova Bay (1:500,000) and Robertson Bay (1:500,000)",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Work_Nthn_Party_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "9b79451b23624cca49f75f645df39316b12c8e190ff0c897319921eedc769e53"
    },
    {
      "id": "history:artifact-83465317ef45",
      "legacy_id": "artifact-83465317ef45",
      "kind": "historical",
      "title": "Spirit level — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-83465317ef45",
      "summary": "Individually cataloged spirit level associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4227.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:83465317ef45e4928ef4",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-83465317ef45",
        "input_record_sha256": "38fc426dd6226f1967cad1d975e5fcf09aa7f67b223533b2aad93313afe7362a",
        "original_fields": {
          "id": "artifact-83465317ef45",
          "title": "Spirit level — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3982",
          "accession": "AAA4227",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged spirit level associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4227.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/297/rv9693.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3982",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Spirit level",
          "notes": "",
          "artifact_id": "AAA4227",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/297/rv9693.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged spirit level associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4227."
        }
      },
      "record_sha256": "d5fafbaefe4bd54f5abf9c561222fdfc53dec1a2fb5133ad0c4cee127076c9fc"
    },
    {
      "id": "history:artifact-84c8b079f322",
      "legacy_id": "artifact-84c8b079f322",
      "kind": "historical",
      "title": "Woollen vest — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-84c8b079f322",
      "summary": "Individually cataloged vest associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4253.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:84c8b079f3224b157469",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-84c8b079f322",
        "input_record_sha256": "eb6c8225ed8789eefd3309a2c2447b8bfde28da98ff8e197495c85f310c6b907",
        "original_fields": {
          "id": "artifact-84c8b079f322",
          "title": "Woollen vest — Australasian Antarctic Expedition",
          "date": "1911",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4008",
          "accession": "AAA4253",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged vest associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4253.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Woollen vest",
          "notes": "",
          "artifact_id": "AAA4253",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged vest associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4253."
        }
      },
      "record_sha256": "0d9b52344607c7645f88f53c352c2a7ce26c9f1cca9e70f2dee9a9deb2614d46"
    },
    {
      "id": "history:artifact-86fdd44c110b",
      "legacy_id": "artifact-86fdd44c110b",
      "kind": "historical",
      "title": "Seamen of the Terra Nova “make and mend clothes”",
      "url": "vault.html#artifact-86fdd44c110b",
      "summary": "Cataloged expedition photograph: Two crewmen sit on the deck of the ship ‘Terra Nova’. They sew thick sheets of material which lies on their laps.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:27f5b9c1fdd36f5228f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-86fdd44c110b",
        "input_record_sha256": "c3e72dc4cd1352db2a7c62f5f110db64674a66f4b7f22ab60a0c43ab89002f54",
        "original_fields": {
          "id": "artifact-86fdd44c110b",
          "artifact_id": "P2005/5/1159",
          "title": "Seamen of the Terra Nova “make and mend clothes”",
          "date": "1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1159",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1159",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1159",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Two crewmen sit on the deck of the ship ‘Terra Nova’. They sew thick sheets of material which lies on their laps.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Two crewmen sit on the deck of the ship ‘Terra Nova’. They sew thick sheets of material which lies on their laps."
        }
      },
      "record_sha256": "9205bcf7aca0705f92b95c31bdc2c5be1ec34cff5b4f49dd9ea6d18f8db275e0"
    },
    {
      "id": "history:artifact-873fb4e732b0",
      "legacy_id": "artifact-873fb4e732b0",
      "kind": "historical",
      "title": "‘Quest’ at quayside, Simonstown, South Africa. McIlroy and Mrs Jeffrey on quay",
      "url": "vault.html#artifact-873fb4e732b0",
      "summary": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. McIlroy and Mrs Jeffrey, both smartly dressed, stand on the quay in front of the boat. Warehouse stand behind, settlement under a mountain in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc44d3a805855b288336",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-873fb4e732b0",
        "input_record_sha256": "da06e093e92e03abda3d58cd2daffe03ffc244909b8ee8721fb9df96a51aff91",
        "original_fields": {
          "id": "artifact-873fb4e732b0",
          "artifact_id": "P2002/28/306",
          "title": "‘Quest’ at quayside, Simonstown, South Africa. McIlroy and Mrs Jeffrey on quay",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Not identified in consulted record",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-306",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-306",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-306",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "Shackleton-Rowett Antarctic Expedition 1921-22",
            "Shackleton–Rowett expedition"
          ],
          "description": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. McIlroy and Mrs Jeffrey, both smartly dressed, stand on the quay in front of the boat. Warehouse stand behind, settlement under a mountain in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. McIlroy and Mrs Jeffrey, both smartly dressed, stand on the quay in front of the boat. Warehouse stand behind, settlement under a mountain in the background."
        }
      },
      "record_sha256": "36a2a3a4415f097e472a70a1067b556832c56f288e17535f43d7223c13b87bd4"
    },
    {
      "id": "history:artifact-88c06bb311ef",
      "legacy_id": "artifact-88c06bb311ef",
      "kind": "historical",
      "title": "Antarctica 1956–1959 Expeditions",
      "url": "vault.html#artifact-88c06bb311ef",
      "summary": "Map insert documents Soviet traverse routes, ship tracks and stations.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f4ff3c1b13d3e1b20a07",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1959",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-88c06bb311ef",
        "input_record_sha256": "31533ad97f0ef0dd6c935bc40dd5f5640c0f2b95c41e2daf6b31eba102754e03",
        "original_fields": {
          "id": "artifact-88c06bb311ef",
          "title": "Antarctica 1956–1959 Expeditions",
          "date": "1959",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2668",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Map insert documents Soviet traverse routes, ship tracks and stations.",
          "identifier": "AADC map 2668",
          "creator": "USSR",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 2668",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Map insert documents Soviet traverse routes, ship tracks and stations."
        }
      },
      "record_sha256": "0cf611448acbd46b1abeaced27fcdf8608ce12260881c77e8c2cfacc7a2ee8ce"
    },
    {
      "id": "history:artifact-88db6ed02774",
      "legacy_id": "artifact-88db6ed02774",
      "kind": "historical",
      "title": "Sledge flag, Robert Falcon Scott — Terra Nova expedition",
      "url": "vault.html#artifact-88db6ed02774",
      "summary": "Individually cataloged sledge flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1609.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:88db6ed0277441aac356",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-88db6ed02774",
        "input_record_sha256": "f898c11697e98e7105df70f9e78741ffbb18e885b408019ba593acdbeffbc46f",
        "original_fields": {
          "id": "artifact-88db6ed02774",
          "title": "Sledge flag, Robert Falcon Scott — Terra Nova expedition",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212309",
          "accession": "ZBA1609",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged sledge flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1609.",
          "visual_url": "https://collections.rmg.co.uk/media/3/392/108/s0764.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212309",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sledge flag, Robert Falcon Scott",
          "notes": "",
          "artifact_id": "ZBA1609",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/392/108/s0764.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sledge flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1609."
        }
      },
      "record_sha256": "57c6f4e784a6314fa1a5cf996c242262e24d37ab839dbeb69307a7c23d9213be"
    },
    {
      "id": "history:artifact-8920d997dee4",
      "legacy_id": "artifact-8920d997dee4",
      "kind": "historical",
      "title": "Tunic — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-8920d997dee4",
      "summary": "Individually cataloged tunic associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4256.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8920d997dee49cb1aacf",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8920d997dee4",
        "input_record_sha256": "e85385c962fa0b49928a4062831f37020bf0d495cfe43479920b76f5bcda2227",
        "original_fields": {
          "id": "artifact-8920d997dee4",
          "title": "Tunic — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4011",
          "accession": "AAA4256",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged tunic associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4256.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Tunic",
          "notes": "",
          "artifact_id": "AAA4256",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged tunic associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4256."
        }
      },
      "record_sha256": "e374688c980922486992447f3f3544f2f079e3e135fa2e74317aab57cc365e14"
    },
    {
      "id": "history:artifact-89d88c85e4ed",
      "legacy_id": "artifact-89d88c85e4ed",
      "kind": "historical",
      "title": "A frame transit — Terra Nova expedition",
      "url": "vault.html#artifact-89d88c85e4ed",
      "summary": "Individually cataloged theodolite associated by Royal Museums Greenwich with the Terra Nova expedition; accession NAV1464.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:89d88c85e4ed562bed69",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-89d88c85e4ed",
        "input_record_sha256": "f6f5198c8d8f2e8ce8acbc3f3ea2debe842bdaa3c55521cf6840cf5ea8a02f35",
        "original_fields": {
          "id": "artifact-89d88c85e4ed",
          "title": "A frame transit — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-43676",
          "accession": "NAV1464",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged theodolite associated by Royal Museums Greenwich with the Terra Nova expedition; accession NAV1464.",
          "visual_url": "https://collections.rmg.co.uk/media/3/436/986/s1150_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-43676",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "A frame transit",
          "notes": "",
          "artifact_id": "NAV1464",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/436/986/s1150_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged theodolite associated by Royal Museums Greenwich with the Terra Nova expedition; accession NAV1464."
        }
      },
      "record_sha256": "64d716ff1cc037b4dd15f3d1cc9240517c5d95a90e9c2c5dafd6c9d76783a5f7"
    },
    {
      "id": "history:artifact-89e6f663ce9e",
      "legacy_id": "artifact-89e6f663ce9e",
      "kind": "historical",
      "title": "Bell Tent — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-89e6f663ce9e",
      "summary": "Individually cataloged bell tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4215.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:89e6f663ce9efce246d6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-89e6f663ce9e",
        "input_record_sha256": "be9908ecaab25d0e871e02eae564267a1573b770efc11014bd52cd1e23656adc",
        "original_fields": {
          "id": "artifact-89e6f663ce9e",
          "title": "Bell Tent — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3970",
          "accession": "AAA4215",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged bell tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4215.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Bell Tent",
          "notes": "",
          "artifact_id": "AAA4215",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged bell tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4215."
        }
      },
      "record_sha256": "7752bd55a91e92fb0bd46a4f86ec24bf2f327229fa84e9dcb8733964e632d756"
    },
    {
      "id": "history:artifact-8a1cad7b057e",
      "legacy_id": "artifact-8a1cad7b057e",
      "kind": "historical",
      "title": "A Cave in Glacier, looking towards Tent island. (Captain Scott & Mr C.S. Wright)",
      "url": "vault.html#artifact-8a1cad7b057e",
      "summary": "Cataloged expedition photograph: View looking out of a cave in a glacier towards Scott and Wright.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:2bd845ca6941a6b8d671",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "4.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8a1cad7b057e",
        "input_record_sha256": "ecb70a45255dbe189afb89394c52780a17bf84a658b99a38893df0e33e2c0dfb",
        "original_fields": {
          "id": "artifact-8a1cad7b057e",
          "artifact_id": "P2005/5/396",
          "title": "A Cave in Glacier, looking towards Tent island. (Captain Scott & Mr C.S. Wright)",
          "date": "4.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-396",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-396",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-396",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: View looking out of a cave in a glacier towards Scott and Wright.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View looking out of a cave in a glacier towards Scott and Wright."
        }
      },
      "record_sha256": "0a4d2008081dac197bca27ab502aea140a42166b8faedea72bc5640fff965578"
    },
    {
      "id": "history:artifact-8c4233548cb5",
      "legacy_id": "artifact-8c4233548cb5",
      "kind": "historical",
      "title": "Ponting photographing the Terra Nova in the pack. December 1910",
      "url": "vault.html#artifact-8c4233548cb5",
      "summary": "Cataloged expedition photograph: Ponting stands on pack ice, looking through a box camera which he holds in front of him. Sail and steam powered ship ‘Terra Nova’ with sails set in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:2a0cceb4db3b17e0180d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8c4233548cb5",
        "input_record_sha256": "ecd2797c0b2b8224e9fc06941d5d34ab66d2f04eaa8ae4dbec1e4e5c9ba15869",
        "original_fields": {
          "id": "artifact-8c4233548cb5",
          "artifact_id": "P2005/5/1156",
          "title": "Ponting photographing the Terra Nova in the pack. December 1910",
          "date": "12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1156",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1156",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1156",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Ponting stands on pack ice, looking through a box camera which he holds in front of him. Sail and steam powered ship ‘Terra Nova’ with sails set in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Ponting stands on pack ice, looking through a box camera which he holds in front of him. Sail and steam powered ship ‘Terra Nova’ with sails set in background."
        }
      },
      "record_sha256": "7944ceff1240072fec366d1a04bab33a3085c5c3b5842425bf8a0cc3eeb46b0c"
    },
    {
      "id": "history:artifact-8cdfb3de1faa",
      "legacy_id": "artifact-8cdfb3de1faa",
      "kind": "historical",
      "title": "Sheet SQ 41-42/16 Bjerko Peninsula, Mac.Robertson Land, Australian Antarctic Territory",
      "url": "vault.html#artifact-8cdfb3de1faa",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:abbc5a5e7993def2b64c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-79.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 79. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 41-42/16 Bjerko Peninsula, Mac.Robertson Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-8cdfb3de1faa"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1970",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8cdfb3de1faa",
        "input_record_sha256": "a8692dbfacefc4ac9640080c22c6d1062dd433920f32ced6c010fa3cabadabe7",
        "original_fields": {
          "id": "artifact-8cdfb3de1faa",
          "artifact_id": "AADC map 79",
          "accession": "AADC map 79",
          "title": "Sheet SQ 41-42/16 Bjerko Peninsula, Mac.Robertson Land, Australian Antarctic Territory",
          "date": "March-1970",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=79",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-79.jpg",
            "width": 917,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 79. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=79",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "58d1e410f28f0791dec31d9c1bc755449eb72c1daf1ad1ecbff230c70606dc9c"
    },
    {
      "id": "history:artifact-8da28a3ac71c",
      "legacy_id": "artifact-8da28a3ac71c",
      "kind": "historical",
      "title": "Antarctic Regions : chart to illustrate the paper on the Drift of the \"Endurance\" by Lieut. J.M. Wordie R.F.A.",
      "url": "vault.html#artifact-8da28a3ac71c",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 7 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a8113c4f4b4116a95967",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "April 1918",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8da28a3ac71c",
        "input_record_sha256": "98b913e384c76919c5680fb864bdd2d3c98406900cfc32c9b3a2ecf372d65b85",
        "original_fields": {
          "id": "artifact-8da28a3ac71c",
          "artifact_id": "AADC map 3700",
          "accession": "AADC map 3700",
          "title": "Antarctic Regions : chart to illustrate the paper on the Drift of the \"Endurance\" by Lieut. J.M. Wordie R.F.A.",
          "date": "April 1918",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3700",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 7 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Drift_Endurance_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3700",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 7 500 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "34 x 36.3 cm",
          "catalog_notes": "A physical copy of this map is on permanent loan from the Australian Antarctic Division to the National Library of Australia, where it is available for viewing.",
          "holding_note": "A physical copy of this map is on permanent loan from the Australian Antarctic Division to the National Library of Australia, where it is available for viewing.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Drift_Endurance_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 7 500 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "3c99034f5df64fe8308e41dbfc8cb52bef5410f8cac25153055745c91521d9a7"
    },
    {
      "id": "history:artifact-8dfd386a6a88",
      "legacy_id": "artifact-8dfd386a6a88",
      "kind": "historical",
      "title": "Longjohns — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-8dfd386a6a88",
      "summary": "Individually cataloged longjohns associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4260.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8dfd386a6a88f3d086f0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8dfd386a6a88",
        "input_record_sha256": "5e3dbed1fc0c3af21991e2e9aba771e0de09d8a87e822462bb915d59c4502f90",
        "original_fields": {
          "id": "artifact-8dfd386a6a88",
          "title": "Longjohns — Australasian Antarctic Expedition",
          "date": "1911",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4015",
          "accession": "AAA4260",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged longjohns associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4260.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Longjohns",
          "notes": "",
          "artifact_id": "AAA4260",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged longjohns associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4260."
        }
      },
      "record_sha256": "90dc657d47e2c69206378722dae2317c6d490b4fb8db5728195882ac188aed87"
    },
    {
      "id": "history:artifact-8fd51bf45b39",
      "legacy_id": "artifact-8fd51bf45b39",
      "kind": "historical",
      "title": "A.A.E. Sledge Journeys",
      "url": "vault.html#artifact-8fd51bf45b39",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 16, 54cm x 75cm. East party shown green. Coast party shown red. Commonwealth Bay. Adelaide Land. Nunatak. Mount Murchison.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8fd51bf45b39",
        "input_record_sha256": "acad2536ee151d41454436aeca516a954d136e864fb44c035f8c17386b45e3b7",
        "original_fields": {
          "id": "artifact-8fd51bf45b39",
          "artifact_id": "SLNSW AAE map 16",
          "accession": "Australasian Antarctic Expedition records, map 16",
          "title": "A.A.E. Sledge Journeys",
          "date": "c1912",
          "creator": "Stillwell, Frank Leslie.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 16, 54cm x 75cm. East party shown green. Coast party shown red. Commonwealth Bay. Adelaide Land. Nunatak. Mount Murchison.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 16, 54cm x 75cm. East party shown green. Coast party shown red. Commonwealth Bay. Adelaide Land. Nunatak. Mount Murchison."
        }
      },
      "record_sha256": "f51f4ff42563498d3d5444551deffbfc1d6cc3e8727ea1ca3385983365434615"
    },
    {
      "id": "history:artifact-8fff7a2f28c8",
      "legacy_id": "artifact-8fff7a2f28c8",
      "kind": "historical",
      "title": "Etymologiae T-O map",
      "url": "vault.html#artifact-8fff7a2f28c8",
      "summary": "Three-part symbolic map, not a polar projection.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4a8263446a447ff899a9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1472",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8fff7a2f28c8",
        "input_record_sha256": "d98b85f8652c9c301e3eeeff9bec78721c99e0862e8ddb1744f4200d89924a52",
        "original_fields": {
          "id": "artifact-8fff7a2f28c8",
          "title": "Etymologiae T-O map",
          "creator": "Isidore of Seville; printer Guntherus Ziner",
          "date": "1472",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj105",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s105p1.jpg",
          "classification": "Christian schematic geography",
          "relevance_and_caution": "Three-part symbolic map, not a polar projection.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Three-part symbolic map, not a polar projection.",
          "categories": [
            "Christian schematic geography"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-8fff7a2f28c8",
            "title": "Etymologiae T-O map",
            "official_source_url": "https://www.loc.gov/exhibits/world/earth.html#obj105",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj105",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s105p1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Three-part symbolic map, not a polar projection."
        }
      },
      "record_sha256": "17b674128a0ce1725258853a4f0e216ad6eb7c4c5037aae28c9d3200fa3583dc"
    },
    {
      "id": "history:artifact-91a5507100ad",
      "legacy_id": "artifact-91a5507100ad",
      "kind": "historical",
      "title": "Nova et acurata totius Asiae tabula",
      "url": "vault.html#artifact-91a5507100ad",
      "summary": "Asian geography labels a broad Tartaria region.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6f1034f95f2c30f364d6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1657",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-91a5507100ad",
        "input_record_sha256": "aafdaa3ebccfdb9595164c6b9bd9a8906d6cbba2641fc18e4140e145413dd4c7",
        "original_fields": {
          "title": "Nova et acurata totius Asiae tabula",
          "date": "circa 1657",
          "institution": "Library of Congress",
          "source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Tartary",
            "historical"
          ],
          "description": "Asian geography labels a broad Tartaria region.",
          "notes": "Creator: Nicolaes Visscher",
          "id": "artifact-91a5507100ad",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-91a5507100ad",
            "title": "Nova et acurata totius Asiae tabula",
            "official_source_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "official_viewer_url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
            "direct_image_url": "https://blogs.loc.gov/maps/files/2025/06/Tartaria-Visscher.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Asian geography labels a broad Tartaria region."
        }
      },
      "record_sha256": "906eb6606fe60733df21b8c48c6f153627935584f58d34ba794816388809287e"
    },
    {
      "id": "history:artifact-938afd202a41",
      "legacy_id": "artifact-938afd202a41",
      "kind": "historical",
      "title": "Cuthbertson beside Scotia",
      "url": "vault.html#artifact-938afd202a41",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-09-02",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-938afd202a41",
        "input_record_sha256": "390550f5df635d7f74110015ef4e599298ebfae9637b39b154135566e3fd1566",
        "original_fields": {
          "title": "Cuthbertson beside Scotia",
          "date": "1903-09-02",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/211",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-938afd202a41",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-938afd202a41",
            "title": "Cuthbertson beside Scotia",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0211.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "7a0c2b1f7225e84bf505174c5eec3befaf02ffd8ebc57a34b2311285f483cb84"
    },
    {
      "id": "history:artifact-972b9ea2fbe3",
      "legacy_id": "artifact-972b9ea2fbe3",
      "kind": "historical",
      "title": "Dog rope — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-972b9ea2fbe3",
      "summary": "Individually cataloged dog rope associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4220.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:972b9ea2fbe3a048d43c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-972b9ea2fbe3",
        "input_record_sha256": "955aa70f95bb89689ae9f7412e19be284e3b10989ce585bd1973995414792e94",
        "original_fields": {
          "id": "artifact-972b9ea2fbe3",
          "title": "Dog rope — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3975",
          "accession": "AAA4220",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged dog rope associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4220.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/329/rw0026.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3975",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Dog rope",
          "notes": "",
          "artifact_id": "AAA4220",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/329/rw0026.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged dog rope associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4220."
        }
      },
      "record_sha256": "ab23082ee59b9f95fe6db7b18427d90e1bac24f2c773c3135fb473855c772084"
    },
    {
      "id": "history:artifact-9907b0e33de2",
      "legacy_id": "artifact-9907b0e33de2",
      "kind": "historical",
      "title": "Plan of Hasselborough Bay. Macquarie Island",
      "url": "vault.html#artifact-9907b0e33de2",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 7, 56cm x 77cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9907b0e33de2",
        "input_record_sha256": "4fb16a0865d1d716144ab775a6341501c51f2f57ac8c8304df563e33130fbfc1",
        "original_fields": {
          "id": "artifact-9907b0e33de2",
          "artifact_id": "SLNSW AAE map 7",
          "accession": "Australasian Antarctic Expedition records, map 7",
          "title": "Plan of Hasselborough Bay. Macquarie Island",
          "date": "1912",
          "creator": "Davis, John King.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "manuscript-plan",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 7, 56cm x 77cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 7, 56cm x 77cm."
        }
      },
      "record_sha256": "feb7463e3a541e500f9e1a68406607fce96d71bb1edb42dcc6723e542bbd9b72"
    },
    {
      "id": "history:artifact-9987bf8b13bf",
      "legacy_id": "artifact-9987bf8b13bf",
      "kind": "historical",
      "title": "Admiralty Chart with S. Y. Aurora's tracks near Shackleton Ice Shelf, Antarctica. Superimposed 1912 - 1914. Presumably by John King Davis.",
      "url": "vault.html#artifact-9987bf8b13bf",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 10, 67cm x 101cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912-1914",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9987bf8b13bf",
        "input_record_sha256": "dd599c822299bfe2f5c06029b5549eaabf495b099d22f2948ab391b3c56d7c49",
        "original_fields": {
          "id": "artifact-9987bf8b13bf",
          "artifact_id": "SLNSW AAE map 10",
          "accession": "Australasian Antarctic Expedition records, map 10",
          "title": "Admiralty Chart with S. Y. Aurora's tracks near Shackleton Ice Shelf, Antarctica. Superimposed 1912 - 1914. Presumably by John King Davis.",
          "date": "1912-1914",
          "creator": "Not identified in inventory",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 10, 67cm x 101cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 10, 67cm x 101cm."
        }
      },
      "record_sha256": "40344db83980d14fe6217edb43b274fea303e17eb56fc408c6c7ce524f861919"
    },
    {
      "id": "history:artifact-9a5f06c2d88d",
      "legacy_id": "artifact-9a5f06c2d88d",
      "kind": "historical",
      "title": "Penguin advertisement for Lyle’s syrup",
      "url": "vault.html#artifact-9a5f06c2d88d",
      "summary": "Cataloged expedition photograph: Penguin stands on a gravel nest. Next to it lie two tins of Lyle syrup.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d220014954ab05a04740",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9a5f06c2d88d",
        "input_record_sha256": "85747550b71768c3362dfa45a0f97a622658becd0c8018e926b0616d25e5d2d4",
        "original_fields": {
          "id": "artifact-9a5f06c2d88d",
          "artifact_id": "P2005/5/1046",
          "title": "Penguin advertisement for Lyle’s syrup",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1046",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1046",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1046",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Penguin stands on a gravel nest. Next to it lie two tins of Lyle syrup.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Penguin stands on a gravel nest. Next to it lie two tins of Lyle syrup."
        }
      },
      "record_sha256": "4a97047ead0a307e85a390dbc2fbfeac531fde192dee4f2e5678ab662f7a69bb"
    },
    {
      "id": "history:artifact-9c8a17c345d3",
      "legacy_id": "artifact-9c8a17c345d3",
      "kind": "historical",
      "title": "Vniversale descrittione di tvtta la terra conoscivta fin qvi",
      "url": "vault.html#artifact-9c8a17c345d3",
      "summary": "Southern land and fantastic fauna are speculative; do not label them surveyed ice-free Antarctica.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:df24cff3e604c98cd7d5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/world-artifact-9c8a17c345d3.jpg",
          "caption": "Library of Congress, Geography and Map Division Reuse terms ↗",
          "title": "Vniversale descrittione di tvtta la terra conoscivta fin qvi",
          "href": "vault.html#artifact-9c8a17c345d3"
        },
        "reuse_notice": "Free to use and reuse under item Rights & Access; no contrary Rights Advisory displayed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1565",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9c8a17c345d3",
        "input_record_sha256": "8ce3b5a4600fbb54becd7c7a91e808af7e2003cd82358c822920f5175e1e00d2",
        "original_fields": {
          "id": "artifact-9c8a17c345d3",
          "title": "Vniversale descrittione di tvtta la terra conoscivta fin qvi",
          "creator": "Ferrando Bertelli; associated with Paolo Forlani",
          "date": "1565",
          "institution": "Library of Congress",
          "source_url": "https://blogs.loc.gov/maps/2017/08/new-worlds-to-explore/",
          "supplemental_or_image_url": "https://www.loc.gov/resource/g3200.mf000070/",
          "classification": "Conjectural southern continent",
          "relevance_and_caution": "Southern land and fantastic fauna are speculative; do not label them surveyed ice-free Antarctica.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Conjectural Terra Australis; not surveyed Antarctica",
          "description": "Southern land and fantastic fauna are speculative; do not label them surveyed ice-free Antarctica.",
          "categories": [
            "Conjectural southern continent"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-9c8a17c345d3",
            "title": "Vniversale descrittione di tvtta la terra conoscivta fin qvi",
            "official_source_url": "https://blogs.loc.gov/maps/2017/08/new-worlds-to-explore/",
            "official_viewer_url": "https://www.loc.gov/resource/g3200.mf000070/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/gmd/gmd3/g3200/g3200/mf000070.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution page."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "display_image": {
            "src": "thumbs/world-artifact-9c8a17c345d3.jpg",
            "width": 1226,
            "height": 754,
            "credit": "Library of Congress, Geography and Map Division",
            "source_url": "https://www.loc.gov/item/85690919/",
            "rights": "Free to use and reuse under item Rights & Access; no contrary Rights Advisory displayed.",
            "note": ""
          },
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Southern land and fantastic fauna are speculative; do not label them surveyed ice-free Antarctica."
        }
      },
      "record_sha256": "f975721be812331ec17c2826886ce2b391aba740db71fde2d3215bc886510f94"
    },
    {
      "id": "history:artifact-9d5f9d52cad6",
      "legacy_id": "artifact-9d5f9d52cad6",
      "kind": "historical",
      "title": "Maps. Mackellar Islets.",
      "url": "vault.html#artifact-9d5f9d52cad6",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 13, 101cm x 69cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912-1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9d5f9d52cad6",
        "input_record_sha256": "77394dcd8f53d660f1d5822272b51d0adc2842e52baa8103807d1bb1283f338c",
        "original_fields": {
          "id": "artifact-9d5f9d52cad6",
          "artifact_id": "SLNSW AAE map 13",
          "accession": "Australasian Antarctic Expedition records, map 13",
          "title": "Maps. Mackellar Islets.",
          "date": "1912-1913",
          "creator": "Mawson, Douglas. Stillwell, Frank Leslie. Bage, Edward Frederick Robert. Madigan, Cecil Thomas. Webb, Eric Norman.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 13, 101cm x 69cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 13, 101cm x 69cm."
        }
      },
      "record_sha256": "1168cd91aaae20dc92eb467c41f9b543d0060eb56f131fe6b3715c821beab7b7"
    },
    {
      "id": "history:artifact-9d7996f0e206",
      "legacy_id": "artifact-9d7996f0e206",
      "kind": "historical",
      "title": "Cecil Meares at the Pianola in the Winterquarters Hut",
      "url": "vault.html#artifact-9d7996f0e206",
      "summary": "Cataloged expedition photograph: In the interior of the hut, Meares sits at a pianola. A metal cylinder stands on the floor in the foreground. Provisions and books are stacked on shelves on the walls.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aa796507c529bcf09c1a",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1.1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9d7996f0e206",
        "input_record_sha256": "1ba5c415612ac76300a76eb346c46ed577ec280742b79631a6d93c9b0468cc06",
        "original_fields": {
          "id": "artifact-9d7996f0e206",
          "artifact_id": "P2005/5/798",
          "title": "Cecil Meares at the Pianola in the Winterquarters Hut",
          "date": "1.1912",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-798",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-798",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-798",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: In the interior of the hut, Meares sits at a pianola. A metal cylinder stands on the floor in the foreground. Provisions and books are stacked on shelves on the walls.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: In the interior of the hut, Meares sits at a pianola. A metal cylinder stands on the floor in the foreground. Provisions and books are stacked on shelves on the walls."
        }
      },
      "record_sha256": "11600863e5ed66aa4d79ad34341b5bea0cb2e0d1dd1ee3a8312a68b83642e762"
    },
    {
      "id": "history:artifact-9e67bf729865",
      "legacy_id": "artifact-9e67bf729865",
      "kind": "historical",
      "title": "Admiralty Chart. Track of the Nimrod in 1909 in black. Aurora in 1912 red. Soundings in fathoms",
      "url": "vault.html#artifact-9e67bf729865",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 8, 56cm x 76cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9e67bf729865",
        "input_record_sha256": "9c8e57976279654e8b28030bf8a9c1e767a8b987df768ecfd35d370700991127",
        "original_fields": {
          "id": "artifact-9e67bf729865",
          "artifact_id": "SLNSW AAE map 8",
          "accession": "Australasian Antarctic Expedition records, map 8",
          "title": "Admiralty Chart. Track of the Nimrod in 1909 in black. Aurora in 1912 red. Soundings in fathoms",
          "date": "1912",
          "creator": "Davis, John King.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 8, 56cm x 76cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 8, 56cm x 76cm."
        }
      },
      "record_sha256": "686bdc2f7c07fea270605130f2adad4620e17ac697fd96f2f1cf49da9e125193"
    },
    {
      "id": "history:artifact-9eb37f335cc7",
      "legacy_id": "artifact-9eb37f335cc7",
      "kind": "historical",
      "title": "Entering the Pack. Fo’castle of the Terra Nova. Dec. 9th 1910",
      "url": "vault.html#artifact-9eb37f335cc7",
      "summary": "Cataloged expedition photograph: Expedition members stand on the deck at the bow of the ship ‘Terra Nova’. Some lean over to look at pack ice which is all around the ship.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b920a8a5207dfbaad9dd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "9.12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9eb37f335cc7",
        "input_record_sha256": "2d155df59e547053783bc8e6fad31861cc10b77d6e3839b373d427fd2ef771c5",
        "original_fields": {
          "id": "artifact-9eb37f335cc7",
          "artifact_id": "P2005/5/4",
          "title": "Entering the Pack. Fo’castle of the Terra Nova. Dec. 9th 1910",
          "date": "9.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-4",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-4",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-4",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Expedition members stand on the deck at the bow of the ship ‘Terra Nova’. Some lean over to look at pack ice which is all around the ship.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Expedition members stand on the deck at the bow of the ship ‘Terra Nova’. Some lean over to look at pack ice which is all around the ship."
        }
      },
      "record_sha256": "7ebf69dddaebef3775e14fff98dee109f1c29c71f176f4dbc1be03c8b4278b11"
    },
    {
      "id": "history:artifact-9ee8994e5786",
      "legacy_id": "artifact-9ee8994e5786",
      "kind": "historical",
      "title": "J.I. Moore standing beside pressure ice, south east corner of bay forming south branch of Bourgeois Fjord (bay north of Calmette Bay)",
      "url": "vault.html#artifact-9ee8994e5786",
      "summary": "Cataloged expedition photograph: Moore stands next to jagged ice blocks. Ice field and mountainous coast behind.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:67184390ccd57ddc9f9d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9ee8994e5786",
        "input_record_sha256": "f20b0e8bcb7ef5361862513ac3e7ec5796851a6f3edf6fcac11be745ac0e79fc",
        "original_fields": {
          "id": "artifact-9ee8994e5786",
          "artifact_id": "P51/8/F417",
          "title": "J.I. Moore standing beside pressure ice, south east corner of bay forming south branch of Bourgeois Fjord (bay north of Calmette Bay)",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f417",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f417",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f417",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore stands next to jagged ice blocks. Ice field and mountainous coast behind.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore stands next to jagged ice blocks. Ice field and mountainous coast behind."
        }
      },
      "record_sha256": "7601f5f782d49fbcda45860faaf278692cf6a27eae758650d32a42d6e8486a53"
    },
    {
      "id": "history:artifact-9f16e820e17a",
      "legacy_id": "artifact-9f16e820e17a",
      "kind": "historical",
      "title": "Chart of South Latitudes beyond 20 Degrees",
      "url": "vault.html#artifact-9f16e820e17a",
      "summary": "J. D. Potter great-circle sailing chart.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1858",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9f16e820e17a",
        "input_record_sha256": "3425c820ca76112822c1e68b5f02f152544bbafb405507d5e1770fc405db2553",
        "original_fields": {
          "title": "Chart of South Latitudes beyond 20 Degrees",
          "date": "1858",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "J. D. Potter great-circle sailing chart.",
          "identifier": "Maps 88710.(6.)",
          "id": "artifact-9f16e820e17a",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 88710.(6.)",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-9f16e820e17a",
            "title": "Chart of South Latitudes beyond 20 Degrees",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/2004c7bd196e6c5a7a31b05c62cf4eda4fc3d7f2-326x400.jpg/a-chart-of-south-latitudes-beyond-20-degrees,-to-facilitate-the-practice-of-great-circle-sailing,-with-...-diagram-for-the-determination-of-the-courses-and-distances,-1858.-bl-maps-88710.(6.).jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "J. D. Potter great-circle sailing chart."
        }
      },
      "record_sha256": "6525e9cd0dec4b33525149a36b70d1a667013ddb866c96ee107f2584b9694701"
    },
    {
      "id": "history:artifact-9fc25ec52f12",
      "legacy_id": "artifact-9fc25ec52f12",
      "kind": "historical",
      "title": "Scotia sounding depths",
      "url": "vault.html#artifact-9fc25ec52f12",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-03-28",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-9fc25ec52f12",
        "input_record_sha256": "7edaa9e77eb6b3c5bb0101b525b579ca251b75856c28b0de527ceca8b541c896",
        "original_fields": {
          "title": "Scotia sounding depths",
          "date": "1904-03-28",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/555",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-9fc25ec52f12",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-9fc25ec52f12",
            "title": "Scotia sounding depths",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0555.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "331b8d69577ae15d6e1bdac0d8a681934fd9f97d6b762212ad36e982f4f7ea4a"
    },
    {
      "id": "history:artifact-a054bab9ddcb",
      "legacy_id": "artifact-a054bab9ddcb",
      "kind": "historical",
      "title": "Sledge cover — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-a054bab9ddcb",
      "summary": "Individually cataloged sledge cover associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4218.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a054bab9ddcbc14e53fa",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a054bab9ddcb",
        "input_record_sha256": "b8a77020e9c9a287d53bb5ad292eae66c9a25543786bcbb689bbf5b8ca029bed",
        "original_fields": {
          "id": "artifact-a054bab9ddcb",
          "title": "Sledge cover — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3973",
          "accession": "AAA4218",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged sledge cover associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4218.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sledge cover",
          "notes": "",
          "artifact_id": "AAA4218",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sledge cover associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4218."
        }
      },
      "record_sha256": "8217776c86d6d605f41dce4d34aeb6c381c86929db095a0c679710acbbfdb584"
    },
    {
      "id": "history:artifact-a118cd449cdf",
      "legacy_id": "artifact-a118cd449cdf",
      "kind": "historical",
      "title": "Antarctic Regions: Captain J. K. Davis annotated chart",
      "url": "vault.html#artifact-a118cd449cdf",
      "summary": "Annotated nautical chart preserved in the Davis collection, NAA P2819.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a3c24d0b7025de8b248b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1933",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a118cd449cdf",
        "input_record_sha256": "1d5bf047a0b4bc2e47b42bb4b2c65333cb17d3f77cec6da1751fecc1682e45d5",
        "original_fields": {
          "id": "artifact-a118cd449cdf",
          "title": "Antarctic Regions: Captain J. K. Davis annotated chart",
          "date": "1933",
          "institution": "National Archives of Australia; cataloged by Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=1335",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Annotated nautical chart preserved in the Davis collection, NAA P2819.",
          "identifier": "AADC map 1335",
          "creator": "UK Hydrographic Department",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 1335",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Annotated nautical chart preserved in the Davis collection, NAA P2819."
        }
      },
      "record_sha256": "719549f85f7a3f7acdeb1e6fd54cc0f689365c22bd8ee0a106068d4ddbcf70d0"
    },
    {
      "id": "history:artifact-a1f473b90132",
      "legacy_id": "artifact-a1f473b90132",
      "kind": "historical",
      "title": "Universalis cosmographia",
      "url": "vault.html#artifact-a1f473b90132",
      "summary": "Early-modern knowledge boundary; depiction predates Antarctic coastal exploration.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:00ec48ecd3e90bbab1c4",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/world-artifact-a1f473b90132.gif",
          "caption": "Low-resolution institutional preview; original viewer may offer more detail. Library of Congress, Geography and Map Division Reuse terms ↗",
          "title": "Universalis cosmographia",
          "href": "vault.html#artifact-a1f473b90132"
        },
        "reuse_notice": "Free to use and reuse under item Rights & Access; no contrary Rights Advisory displayed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1507",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a1f473b90132",
        "input_record_sha256": "d48c362cc0cd56a9300e478ebd764f37981036d7deecc8d44f36255eefa96e00",
        "original_fields": {
          "id": "artifact-a1f473b90132",
          "title": "Universalis cosmographia",
          "creator": "Martin Waldseemüller",
          "date": "1507",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/worldmap1507/index.html",
          "supplemental_or_image_url": "https://www.loc.gov/item/2003626426/",
          "classification": "World map",
          "relevance_and_caution": "Early-modern knowledge boundary; depiction predates Antarctic coastal exploration.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Early-modern knowledge boundary; depiction predates Antarctic coastal exploration.",
          "categories": [
            "World map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-a1f473b90132",
            "title": "Universalis cosmographia",
            "official_source_url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/worldmap1507/index.html",
            "official_viewer_url": "https://www.loc.gov/resource/g3200.ct000725C/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/gmd/gmd3/g3200/g3200/ct000725C.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "display_image": {
            "src": "thumbs/world-artifact-a1f473b90132.gif",
            "width": 269,
            "height": 150,
            "credit": "Library of Congress, Geography and Map Division",
            "source_url": "https://www.loc.gov/item/2003626426/",
            "rights": "Free to use and reuse under item Rights & Access; no contrary Rights Advisory displayed.",
            "note": "Low-resolution institutional preview; original viewer may offer more detail. "
          },
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Early-modern knowledge boundary; depiction predates Antarctic coastal exploration."
        }
      },
      "record_sha256": "545106e0dedb3dea450b087b5565cd9a58082e2f370f3b83caa4d48a692614a6"
    },
    {
      "id": "history:artifact-a3e43d569164",
      "legacy_id": "artifact-a3e43d569164",
      "kind": "historical",
      "title": "Antarctica Exploration Sketch Map: first year",
      "url": "vault.html#artifact-a3e43d569164",
      "summary": "Discovery routes, winter quarters and observation-balloon site.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d4eba2305e5b86cdee83",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a3e43d569164",
        "input_record_sha256": "d6ba354229e7a4a1f90c4b8e41b4412cea60240a47924cb3c8e824f1735e57f6",
        "original_fields": {
          "title": "Antarctica Exploration Sketch Map: first year",
          "date": "1903",
          "institution": "Library of Congress",
          "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "expedition"
          ],
          "description": "Discovery routes, winter quarters and observation-balloon site.",
          "id": "artifact-a3e43d569164",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-a3e43d569164",
            "title": "Antarctica Exploration Sketch Map: first year",
            "official_source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
            "official_viewer_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
            "direct_image_url": "https://blogs.loc.gov/maps/files/2021/08/Ant1-scaled.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Discovery routes, winter quarters and observation-balloon site."
        }
      },
      "record_sha256": "8f7d91686d6ab36acc43ff553cfcdd24ab675a013ce5c9da0d55c3eed29b5de4"
    },
    {
      "id": "history:artifact-a48c309066eb",
      "legacy_id": "artifact-a48c309066eb",
      "kind": "historical",
      "title": "Sheets SQ 40-41/9 & Part 5 Aker Peaks & Cape Borley, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/11 & Part 7]",
      "url": "vault.html#artifact-a48c309066eb",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ff810929a30c931ea8e0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-78.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 78. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 40-41/9 & Part 5 Aker Peaks & Cape Borley, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/11 & Part 7]",
          "href": "vault.html#artifact-a48c309066eb"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September-1967",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a48c309066eb",
        "input_record_sha256": "09c0d0492e582146d5c5f9a31b32c85830ecf6c6f9b9e7e5e2b5a0eba0688d1f",
        "original_fields": {
          "id": "artifact-a48c309066eb",
          "artifact_id": "AADC map 78",
          "accession": "AADC map 78",
          "title": "Sheets SQ 40-41/9 & Part 5 Aker Peaks & Cape Borley, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/11 & Part 7]",
          "date": "September-1967",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=78",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-78.jpg",
            "width": 858,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 78. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=78",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "c02e19d20b96f27765b0b35408525b31261264b7f4298bb4330ad2edbaef371b"
    },
    {
      "id": "history:artifact-a4ca28ea0ebb",
      "legacy_id": "artifact-a4ca28ea0ebb",
      "kind": "historical",
      "title": "Lucas sounding apparatus",
      "url": "vault.html#artifact-a4ca28ea0ebb",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-03-28",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a4ca28ea0ebb",
        "input_record_sha256": "c4aa563aa503ddf229bfd2c5ed33cba5c4c18b641abc75abf230e76e736030e1",
        "original_fields": {
          "title": "Lucas sounding apparatus",
          "date": "1904-03-28",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/553",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-a4ca28ea0ebb",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-a4ca28ea0ebb",
            "title": "Lucas sounding apparatus",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0553.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "62360869f2cfa58b71f18412cc338a5b286d1dc26bce8e3131b40e56c77da027"
    },
    {
      "id": "history:artifact-a523a586659e",
      "legacy_id": "artifact-a523a586659e",
      "kind": "historical",
      "title": "Sheet SQ 38-39/16 McLeod Nunataks, Enderby Land, Australian Antarctic Territory [SQ 39-40/14]",
      "url": "vault.html#artifact-a523a586659e",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:97bcc467db8c5970ddb2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-90.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 90. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 38-39/16 McLeod Nunataks, Enderby Land, Australian Antarctic Territory [SQ 39-40/14]",
          "href": "vault.html#artifact-a523a586659e"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1964",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a523a586659e",
        "input_record_sha256": "1c8f1d08d5b65954da68c05b52a107dfd4a4c3ce821950b98ceccaf256727f34",
        "original_fields": {
          "id": "artifact-a523a586659e",
          "artifact_id": "AADC map 90",
          "accession": "AADC map 90",
          "title": "Sheet SQ 38-39/16 McLeod Nunataks, Enderby Land, Australian Antarctic Territory [SQ 39-40/14]",
          "date": "March 1964",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=90",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_16_1964_250k_90_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=90",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "67 x 67 cm",
          "catalog_notes": "McLeod Nunataks / Enderby Land SQ 38-39/16 have been numbered according to a map numbering system adopted by Department of National Mapping in 1964 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/14.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_16_1964_250k_90_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-90.jpg",
            "width": 960,
            "height": 940,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 90. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=90",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "967d010ea21010f02563aae490bc4d9e2bdcba29e3ed523023b3a242b2347952"
    },
    {
      "id": "history:artifact-a6ca1fec564a",
      "legacy_id": "artifact-a6ca1fec564a",
      "kind": "historical",
      "title": "World map in Geography Rectified",
      "url": "vault.html#artifact-a6ca1fec564a",
      "summary": "Hemispheric arrangement belongs to globe cartography, not a two-disc cosmology.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7863c58b113541d0d8ab",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/world-artifact-a6ca1fec564a.gif",
          "caption": "Washington University Libraries; Robert Morden, Geography Rectified,1680 Reuse terms ↗",
          "title": "World map in Geography Rectified",
          "href": "vault.html#artifact-a6ca1fec564a"
        },
        "reuse_notice": "Institution item explicitly marks Public Domain Mark1.0",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1680",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a6ca1fec564a",
        "input_record_sha256": "e337bb1c1515b3ac2ac0523c2a516acf68628c38c8d6d7628bc2d808d376b315",
        "original_fields": {
          "id": "artifact-a6ca1fec564a",
          "title": "World map in Geography Rectified",
          "creator": "Robert Morden",
          "date": "1680",
          "institution": "Washington University Libraries",
          "source_url": "https://digitalexhibits.library.washu.edu/s/terra-incognita/item/18981",
          "supplemental_or_image_url": null,
          "classification": "Double-hemisphere world map",
          "relevance_and_caution": "Hemispheric arrangement belongs to globe cartography, not a two-disc cosmology.",
          "rights": "Public Domain Mark 1.0 recorded by institution.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Hemispheric arrangement belongs to globe cartography, not a two-disc cosmology.",
          "categories": [
            "Double-hemisphere world map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-a6ca1fec564a",
            "title": "World map in Geography Rectified",
            "official_source_url": "https://digitalexhibits.library.washu.edu/s/terra-incognita/item/18981",
            "official_viewer_url": "https://digitalexhibits.library.washu.edu/s/terra-incognita/item/18981",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Public Domain Mark 1.0 recorded by institution.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "display_image": {
            "src": "thumbs/world-artifact-a6ca1fec564a.gif",
            "width": 446,
            "height": 268,
            "credit": "Washington University Libraries; Robert Morden, Geography Rectified,1680",
            "source_url": "https://digitalexhibits.library.washu.edu/s/terra-incognita/item/18981",
            "rights": "Institution item explicitly marks Public Domain Mark1.0",
            "note": ""
          },
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Hemispheric arrangement belongs to globe cartography, not a two-disc cosmology."
        }
      },
      "record_sha256": "2dc94e7d1813e35c9d866c73e5f3285cc5328dcbf3f02dc19b7e163e6400151a"
    },
    {
      "id": "history:artifact-a6d715a37c80",
      "legacy_id": "artifact-a6d715a37c80",
      "kind": "historical",
      "title": "Maps to illustrate the paper by Dr. J.B. Charcot on the French Antarctic Expedition 1908-1910.",
      "url": "vault.html#artifact-a6d715a37c80",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:21ff62698c7d0aa86cd9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a6d715a37c80",
        "input_record_sha256": "298779f49f9ade87813d751f91d487e136eb975864ed7567155b8c6348f5a664",
        "original_fields": {
          "id": "artifact-a6d715a37c80",
          "artifact_id": "AADC map 3691",
          "accession": "AADC map 3691",
          "title": "Maps to illustrate the paper by Dr. J.B. Charcot on the French Antarctic Expedition 1908-1910.",
          "date": "1911",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3691",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1908-1910_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3691",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 5 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "40.5 x 35 cm",
          "catalog_notes": "5 maps showing the tracks of the \"Belgica\" 1898, \"Francais\" 1903-05, \"Pourquoi Pas?\" 1908-1909, and 1909-1910.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1908-1910_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "acd538fe45546b71a080b4498728248ae0735919fa22e158784f255ceaf82547"
    },
    {
      "id": "history:artifact-a75dd084257d",
      "legacy_id": "artifact-a75dd084257d",
      "kind": "historical",
      "title": "Scott final letter to Bridgeman",
      "url": "vault.html#artifact-a75dd084257d",
      "summary": "Final-camp letter acquired by the institute in 2013.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f86cb52336d43c860a16",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912-03",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a75dd084257d",
        "input_record_sha256": "fd86953787f52e99664cbf35f3f7c6eba4bcbe66ac54c19bfb3f2f1931eb836c",
        "original_fields": {
          "title": "Scott final letter to Bridgeman",
          "date": "1912-03",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "source_url": "https://www.cam.ac.uk/research/news/last-letter-of-captain-scott-finally-revealed-in-full-101-years-on",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Terra Nova expedition"
          ],
          "description": "Final-camp letter acquired by the institute in 2013.",
          "id": "artifact-a75dd084257d",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-a75dd084257d",
            "title": "Scott final letter to Bridgeman",
            "official_source_url": "https://www.cam.ac.uk/research/news/last-letter-of-captain-scott-finally-revealed-in-full-101-years-on",
            "official_viewer_url": "https://www.cam.ac.uk/research/news/last-letter-of-captain-scott-finally-revealed-in-full-101-years-on",
            "direct_image_url": "https://www.cam.ac.uk/sites/default/files/styles/content-885x432/public/news/research/news/130329-scott-letter.jpg.webp?h=be0076c0&itok=ngJHOKZ2",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Final-camp letter acquired by the institute in 2013."
        }
      },
      "record_sha256": "837005b39663ded08603285552894ba9ba69a90d724992b7f8b18e2859f275e9"
    },
    {
      "id": "history:artifact-a7f15d283b2f",
      "legacy_id": "artifact-a7f15d283b2f",
      "kind": "historical",
      "title": "Sheets SQ 38-39/12 & Part 8 Mount Codrington & Proclamation Island, Enderby Land, Australian Antarctic Territory [SQ 39-40/10 & Part 6]",
      "url": "vault.html#artifact-a7f15d283b2f",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:fb1dee1beaf822cc6d80",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-92.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 92. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 38-39/12 & Part 8 Mount Codrington & Proclamation Island, Enderby Land, Australian Antarctic Territory [SQ 39-40/10 & Part 6]",
          "href": "vault.html#artifact-a7f15d283b2f"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1964",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a7f15d283b2f",
        "input_record_sha256": "84663d7e3bdb6bd7254e7891e39298d9d4e57eafcc126a40c8a3d1434f7cdf6a",
        "original_fields": {
          "id": "artifact-a7f15d283b2f",
          "artifact_id": "AADC map 92",
          "accession": "AADC map 92",
          "title": "Sheets SQ 38-39/12 & Part 8 Mount Codrington & Proclamation Island, Enderby Land, Australian Antarctic Territory [SQ 39-40/10 & Part 6]",
          "date": "March 1964",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=92",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_12_%26_Part_8_1964_250k_92_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=92",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "71 x 67 cm",
          "catalog_notes": "Mount Codrington & Proclamation Island SQ 38-39/12 & Part 8 have been numbered according to a map numbering system adopted by Department of National Mapping in 1964 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/10 & Part 6.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_12_%26_Part_8_1964_250k_92_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-92.jpg",
            "width": 833,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 92. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=92",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "fc82374aa83fe29aedf13c7f99477ca66412ab744f869bad77753fa8b6828a3b"
    },
    {
      "id": "history:artifact-a94a0f8756b9",
      "legacy_id": "artifact-a94a0f8756b9",
      "kind": "historical",
      "title": "Weathered ice after blizzard at Cape Evans, looking to Castle Rock. March 8th 1911",
      "url": "vault.html#artifact-a94a0f8756b9",
      "summary": "Cataloged expedition photograph: View towards sea over ice in foreground. Ice floes and icebergs in distance.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:1a4702485de5059682d2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "3.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a94a0f8756b9",
        "input_record_sha256": "44b73b06a56dd5040d5f818e3feb8c9d6de8e3efefcccabede7ddfd7b45e1b3d",
        "original_fields": {
          "id": "artifact-a94a0f8756b9",
          "artifact_id": "P2005/5/319",
          "title": "Weathered ice after blizzard at Cape Evans, looking to Castle Rock. March 8th 1911",
          "date": "3.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-319",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-319",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-319",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: View towards sea over ice in foreground. Ice floes and icebergs in distance.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View towards sea over ice in foreground. Ice floes and icebergs in distance."
        }
      },
      "record_sha256": "24fbc24f4cb3387e653b9f010066148ba6d4b93dc862549d4c5b4a250477d8f2"
    },
    {
      "id": "history:artifact-aacebc43b826",
      "legacy_id": "artifact-aacebc43b826",
      "kind": "historical",
      "title": "Map showing Winter Quarters, Penguin Point and Dreadnought Bluff",
      "url": "vault.html#artifact-aacebc43b826",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 20, 30cm x 49 cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c1912, c1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-aacebc43b826",
        "input_record_sha256": "2ba8008e23a9401fbf3ae48f999ad4050ba5a1043c72ea96d452413f8b2054ca",
        "original_fields": {
          "id": "artifact-aacebc43b826",
          "artifact_id": "SLNSW AAE map 20",
          "accession": "Australasian Antarctic Expedition records, map 20",
          "title": "Map showing Winter Quarters, Penguin Point and Dreadnought Bluff",
          "date": "c1912, c1913",
          "creator": "Madigan, Cecil T.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 20, 30cm x 49 cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 20, 30cm x 49 cm."
        }
      },
      "record_sha256": "37cbd0fed1e5bd9720d51f22e0df09505381a3e6208cd4490ab951ff3aba8f51"
    },
    {
      "id": "history:artifact-ac67026bdec2",
      "legacy_id": "artifact-ac67026bdec2",
      "kind": "historical",
      "title": "Piri Reis world map fragment",
      "url": "vault.html#artifact-ac67026bdec2",
      "summary": "An authentic surviving fragment of Piri Reis’s world map. Provenance of the artifact does not establish the later interpretation that it depicts an ice-free Antarctic coast.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ac67026bdec2f3d8fc87",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Museum-controlled image rights; external source only, pending permission.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1513",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ac67026bdec2",
        "input_record_sha256": "c1815ed917c1547c96aa1dcd8279dc2ea5ffaf7faf89be1e70692665015c575a",
        "original_fields": {
          "id": "artifact-ac67026bdec2",
          "reference_id": "h-piri",
          "title": "Piri Reis world map fragment",
          "date": "1513",
          "institution": "Topkapı Palace Museum Library",
          "source_url": "https://www.unesco.org/en/memory-world/piri-reis-world-map-1513",
          "accession": "Revan Köşkü1633",
          "categories": [
            "historical-map",
            "world-map"
          ],
          "description": "An authentic surviving fragment of Piri Reis’s world map. Provenance of the artifact does not establish the later interpretation that it depicts an ice-free Antarctic coast.",
          "rights": "Museum-controlled image rights; external source only, pending permission.",
          "embed_allowed": false,
          "official_viewer_url": "https://www.unesco.org/en/memory-world/piri-reis-world-map-1513",
          "direct_image_url": null,
          "edition_note": "Surviving fragment; not a complete map.",
          "provenance": "Lead in user-supplied Claude HIST array; metadata independently checked against primary repositories during prior primary-source audit in this research thread; do not import supplied claims or rights wholesale.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "kind": "historical",
          "label": "record",
          "summary": "An authentic surviving fragment of Piri Reis’s world map. Provenance of the artifact does not establish the later interpretation that it depicts an ice-free Antarctic coast."
        }
      },
      "record_sha256": "7a99a7558deb5542380508b861bfe7a6399f5b2bf0e03e0dc2b6cbee73f7b2d5"
    },
    {
      "id": "history:artifact-acd3c1f28d9d",
      "legacy_id": "artifact-acd3c1f28d9d",
      "kind": "historical",
      "title": "Members of the expedition on ‘Quest’",
      "url": "vault.html#artifact-acd3c1f28d9d",
      "summary": "Cataloged expedition photograph: Expedition members pose at the stern of the ship ‘Quest’.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8f4a0aabf87c96d4b7c1",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-acd3c1f28d9d",
        "input_record_sha256": "227a383417263718cb65dde916d30f06de3d4127c534c0895a264ec744a8e884",
        "original_fields": {
          "id": "artifact-acd3c1f28d9d",
          "artifact_id": "P56/77/27",
          "title": "Members of the expedition on ‘Quest’",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Bee-Mason, John Charles",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-27",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-27",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-27",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "Shackleton-Rowett Antarctic Expedition 1921-22",
            "Shackleton–Rowett expedition"
          ],
          "description": "Cataloged expedition photograph: Expedition members pose at the stern of the ship ‘Quest’.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Expedition members pose at the stern of the ship ‘Quest’."
        }
      },
      "record_sha256": "0b12a30d6195beff64222820d0891201be53011d8b90e0e3b457bf19895c7b91"
    },
    {
      "id": "history:artifact-ad7b38f5e8ac",
      "legacy_id": "artifact-ad7b38f5e8ac",
      "kind": "historical",
      "title": "The universe after Cosmas, A.D. 550",
      "url": "vault.html#artifact-ad7b38f5e8ac",
      "summary": "Kohl’s nineteenth-century tracing of a Cosmas reconstruction.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6d2673e85fcdedbfcad5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-ad7b38f5e8ac.gif",
          "caption": "Low-resolution institutional preview; open original viewer for detail.",
          "title": "The universe after Cosmas, A.D. 550",
          "href": "vault.html#artifact-ad7b38f5e8ac"
        },
        "reuse_notice": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1860",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ad7b38f5e8ac",
        "input_record_sha256": "4ce5879cb48908e85fe654a40a4c76f94d85436f83948db5c4fa58d02a69cbf0",
        "original_fields": {
          "title": "The universe after Cosmas, A.D. 550",
          "date": "circa 1860",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2011594788/",
          "rights": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
          "categories": [
            "map",
            "cosmology",
            "reconstruction"
          ],
          "description": "Kohl’s nineteenth-century tracing of a Cosmas reconstruction.",
          "identifier": "2011594788",
          "notes": "550 is the represented model’s date, not this artifact’s creation date.",
          "id": "artifact-ad7b38f5e8ac",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "2011594788",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-ad7b38f5e8ac",
            "title": "The universe after Cosmas, A.D. 550",
            "official_source_url": "https://www.loc.gov/item/2011594788/",
            "official_viewer_url": "https://www.loc.gov/resource/g3180.ct001483/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/gmd/gmd3/g3180/g3180/ct001483.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Kohl’s nineteenth-century tracing of a Cosmas reconstruction."
        }
      },
      "record_sha256": "61e3ce73f59c138b7a5b398c5515131f4b37c6cca72c8e5d17ef2bb42073e94c"
    },
    {
      "id": "history:artifact-ad997281dff5",
      "legacy_id": "artifact-ad997281dff5",
      "kind": "historical",
      "title": "Sheet SQ 49-50/9 Vincennes Bay, Wilkes Land, Australian Antarctic Territory",
      "url": "vault.html#artifact-ad997281dff5",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc5c6d14414b419499dd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-108.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 108. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 49-50/9 Vincennes Bay, Wilkes Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-ad997281dff5"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1969",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ad997281dff5",
        "input_record_sha256": "830969a05d9a97aaffe54743b26065a61534d16bac6be948edcb385c383d9c58",
        "original_fields": {
          "id": "artifact-ad997281dff5",
          "artifact_id": "AADC map 108",
          "accession": "AADC map 108",
          "title": "Sheet SQ 49-50/9 Vincennes Bay, Wilkes Land, Australian Antarctic Territory",
          "date": "March 1969",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=108",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ49-50_9_1969_250k_108_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=108",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "67 x 67 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ49-50_9_1969_250k_108_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-108.jpg",
            "width": 885,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 108. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=108",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "5e0332ec8cd17be04234e8b034cceb847792440887f5554039614dc734db687e"
    },
    {
      "id": "history:artifact-afa6c1e106dc",
      "legacy_id": "artifact-afa6c1e106dc",
      "kind": "historical",
      "title": "The green canvas bag used to carry the diaries of Captain R. F. Scott, RN.",
      "url": "vault.html#artifact-afa6c1e106dc",
      "summary": "Individually cataloged book bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1613.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:afa6c1e106dc9bb7f0ec",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-afa6c1e106dc",
        "input_record_sha256": "73263bb513490c05ebf62f89b8645d0a0129a1af866db56c6b563bbe913248b3",
        "original_fields": {
          "id": "artifact-afa6c1e106dc",
          "title": "The green canvas bag used to carry the diaries of Captain R. F. Scott, RN.",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212313",
          "accession": "ZBA1613",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged book bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1613.",
          "visual_url": "https://collections.rmg.co.uk/media/3/437/229/large_s1654_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212313",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "The green canvas bag used to carry the diaries of Captain R. F. Scott, RN.",
          "notes": "",
          "artifact_id": "ZBA1613",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/437/229/large_s1654_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged book bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1613."
        }
      },
      "record_sha256": "103248af7d3a5744e6c8754ec6a7963c75b0f6e57d67ac1e6aebc5ddfa31890c"
    },
    {
      "id": "history:artifact-afd659886cc2",
      "legacy_id": "artifact-afd659886cc2",
      "kind": "historical",
      "title": "Approximate Bird’s-Eye View",
      "url": "vault.html#artifact-afd659886cc2",
      "summary": "Amundsen route illustration; not aerial photography.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-afd659886cc2",
        "input_record_sha256": "3f504f4dfcefdfae1c570bbe7cbb529f184f00cb48eae5c968fc58c14c49c4e5",
        "original_fields": {
          "title": "Approximate Bird’s-Eye View",
          "date": "1912",
          "institution": "Wellesley College Library; reproduced by British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Amundsen route illustration; not aerial photography.",
          "identifier": "Rare Books 2370.f.13",
          "id": "artifact-afd659886cc2",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Rare Books 2370.f.13",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-afd659886cc2",
            "title": "Approximate Bird’s-Eye View",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/aaf1f7cd461e33844ea2a5d2fc1d7e55bd1c01eb-262x400.jpg/approximate-bird's-eye-view,-drawn-from-the-first-telegraphic-account,-in-the-south-pole-1912,-opp-p-32.-image-courtesy-wellesley-college-library.-rare-books-2370.f.13..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Amundsen route illustration; not aerial photography."
        }
      },
      "record_sha256": "cd6f4d417f73c8e20f3d0e8b53e9ff203d665fe88ac5b3c8204b6f59fe7f9f7f"
    },
    {
      "id": "history:artifact-afd90249bbdc",
      "legacy_id": "artifact-afd90249bbdc",
      "kind": "historical",
      "title": "Lieut Evans and Day guide a motor sledge",
      "url": "vault.html#artifact-afd90249bbdc",
      "summary": "Cataloged expedition photograph: Evans walks in front of a motor sledge holding a rope attached to its front. Day walks alongside the sledge.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a7b536f51d7a4d241c61",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-afd90249bbdc",
        "input_record_sha256": "2175f930a4839939c6e233a24171d679aefe8812ca9f73b48abbea951eca99a9",
        "original_fields": {
          "id": "artifact-afd90249bbdc",
          "artifact_id": "P2005/5/991",
          "title": "Lieut Evans and Day guide a motor sledge",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-991",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-991",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-991",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Evans walks in front of a motor sledge holding a rope attached to its front. Day walks alongside the sledge.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Evans walks in front of a motor sledge holding a rope attached to its front. Day walks alongside the sledge."
        }
      },
      "record_sha256": "f5b4134053724be55a670bd20c28eb6e8e1bc3f6d2c366841b0108c1be806e3a"
    },
    {
      "id": "history:artifact-afda8411b599",
      "legacy_id": "artifact-afda8411b599",
      "kind": "historical",
      "title": "Loaded sledge for one of the motor tractors, on the sea ice, by the Winterquarters Hut. October 1911",
      "url": "vault.html#artifact-afda8411b599",
      "summary": "Cataloged expedition photograph: Day secures the load on one of three loaded sledges standing on the ice. Hut in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e597ab801cebe6dfd341",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "10.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-afda8411b599",
        "input_record_sha256": "8934209d850f9383c955cb070f32fd11e254dcfa565c501293d263474e3e1de6",
        "original_fields": {
          "id": "artifact-afda8411b599",
          "artifact_id": "P2005/5/570",
          "title": "Loaded sledge for one of the motor tractors, on the sea ice, by the Winterquarters Hut. October 1911",
          "date": "10.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-570",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-570",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-570",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Day secures the load on one of three loaded sledges standing on the ice. Hut in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Day secures the load on one of three loaded sledges standing on the ice. Hut in background."
        }
      },
      "record_sha256": "5afddd2d08985ef5e5a33a8700c76ba87fc23befb2fedff77f3a6611add5ce39"
    },
    {
      "id": "history:artifact-b094e617db66",
      "legacy_id": "artifact-b094e617db66",
      "kind": "historical",
      "title": "Queen Maud Range and Axel Heiberg Glacier Region",
      "url": "vault.html#artifact-b094e617db66",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 316 800. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a97504227b08e838829f",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "December 1963",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b094e617db66",
        "input_record_sha256": "ee7df92332dcb74820bf9ac1fb4c9f36411b418d17932cd9c356b7fbacbae502",
        "original_fields": {
          "id": "artifact-b094e617db66",
          "artifact_id": "AADC map 3720",
          "accession": "AADC map 3720",
          "title": "Queen Maud Range and Axel Heiberg Glacier Region",
          "date": "December 1963",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3720",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 316 800. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Queen_Maud_Range_Axel_Heiberg_Glacier_region_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3720",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 316 800",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "60.5 x 38 cm",
          "catalog_notes": "2 maps on 1 sheet",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Queen_Maud_Range_Axel_Heiberg_Glacier_region_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 316 800. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "70fbb9138d89f2c3134d1e7707de6547e9aa3686668924199065a30be4aa2869"
    },
    {
      "id": "history:artifact-b2806f8f2124",
      "legacy_id": "artifact-b2806f8f2124",
      "kind": "historical",
      "title": "Meares and Capt Oates at the blubber stove cooking food for the dogs",
      "url": "vault.html#artifact-b2806f8f2124",
      "summary": "Cataloged expedition photograph: In the interior of the stable, Meares, smoking a pipe, and Oates sit on sacks in front of a stove on which stands a big metal pot and a kettle.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:7e7e9e63b579cf30473b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "5.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b2806f8f2124",
        "input_record_sha256": "e307e77c550670d2e58b77ea6a905f9b71083fd501dc253e6977094e87f5d297",
        "original_fields": {
          "id": "artifact-b2806f8f2124",
          "artifact_id": "P2005/5/421",
          "title": "Meares and Capt Oates at the blubber stove cooking food for the dogs",
          "date": "5.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-421",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-421",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-421",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: In the interior of the stable, Meares, smoking a pipe, and Oates sit on sacks in front of a stove on which stands a big metal pot and a kettle.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: In the interior of the stable, Meares, smoking a pipe, and Oates sit on sacks in front of a stove on which stands a big metal pot and a kettle."
        }
      },
      "record_sha256": "4907e7634d2f674f0fdad8fbb5223d7b7f39cafc0d0917dd3d5e92ff29401ec5"
    },
    {
      "id": "history:artifact-b2d220266dd1",
      "legacy_id": "artifact-b2d220266dd1",
      "kind": "historical",
      "title": "National flag of New Zealand — Terra Nova expedition",
      "url": "vault.html#artifact-b2d220266dd1",
      "summary": "Individually cataloged national flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA0489.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b2d220266dd196b9f4ba",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b2d220266dd1",
        "input_record_sha256": "74447848d0681c024e85d2fc49e670cf75b811d5f78d3d6a98ecafa5ccb288cd",
        "original_fields": {
          "id": "artifact-b2d220266dd1",
          "title": "National flag of New Zealand — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-489",
          "accession": "AAA0489",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged national flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA0489.",
          "visual_url": "https://collections.rmg.co.uk/media/325/868/d0447.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-489",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "National flag of New Zealand",
          "notes": "",
          "artifact_id": "AAA0489",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/325/868/d0447.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged national flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA0489."
        }
      },
      "record_sha256": "b0eae8449c97f926ca5c0a9850051b1bfd2e6f03723039dd10f642d85545f1a8"
    },
    {
      "id": "history:artifact-b39ad9bd13b7",
      "legacy_id": "artifact-b39ad9bd13b7",
      "kind": "historical",
      "title": "Sheets SQ 40-41/15 & Part SR 40-41/3 Mawson & Mount Twintop, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/13 & SR 41-42/1]",
      "url": "vault.html#artifact-b39ad9bd13b7",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d59ed60185145db30a46",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-89.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 89. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail renders the original 1964 first-edition PDF rather than the 1983 reprint shown in the institutional preview. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 40-41/15 & Part SR 40-41/3 Mawson & Mount Twintop, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/13 & SR 41-42/1]",
          "href": "vault.html#artifact-b39ad9bd13b7"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September 1964",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b39ad9bd13b7",
        "input_record_sha256": "de325384bb7de9c145f60c7967d0916536013a125c7a3b480d50fdfb66b9ac33",
        "original_fields": {
          "id": "artifact-b39ad9bd13b7",
          "artifact_id": "AADC map 89",
          "accession": "AADC map 89",
          "title": "Sheets SQ 40-41/15 & Part SR 40-41/3 Mawson & Mount Twintop, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/13 & SR 41-42/1]",
          "date": "September 1964",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=89",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "71 x 64.5 cm",
          "catalog_notes": "Mawson & Mount Twintop SQ 40-41/15 & Part SR 40-41/3 have been numbered according to a map numbering system adopted by Department of National Mapping in 1964 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1971. The map should now be quoted as SQ 41-42/13 & SR 41-42/1.",
          "visual_note": "Catalog-linked thumbnail filename indicates1983 although record publication date is1964; withheld pending edition match.",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-89.jpg",
            "width": 798,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 89. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=89",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "First PDF page rendered at 960px maximum dimension; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "cb60fcb23af3c583e4e8ce5e36519d2d5a269659fb8049ae8a586b5ad1d63c1b"
    },
    {
      "id": "history:artifact-b42aeb9d8839",
      "legacy_id": "artifact-b42aeb9d8839",
      "kind": "historical",
      "title": "Loading sledges by the “Terra Nova”",
      "url": "vault.html#artifact-b42aeb9d8839",
      "summary": "Cataloged expedition photograph: Two expedition members pack bags and bundles onto a sledge. Another stands by and watches. Other bags and bundles stand on the ice. Ship ‘Terra Nova’ and coastline in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8f093bf67bd6407eb394",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b42aeb9d8839",
        "input_record_sha256": "c319d1587cdf332196dcef4a12a6e0c850e01d375239a80da88c08eb6f674741",
        "original_fields": {
          "id": "artifact-b42aeb9d8839",
          "artifact_id": "P2005/5/199",
          "title": "Loading sledges by the “Terra Nova”",
          "date": "1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-199",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-199",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-199",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Two expedition members pack bags and bundles onto a sledge. Another stands by and watches. Other bags and bundles stand on the ice. Ship ‘Terra Nova’ and coastline in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Two expedition members pack bags and bundles onto a sledge. Another stands by and watches. Other bags and bundles stand on the ice. Ship ‘Terra Nova’ and coastline in the background."
        }
      },
      "record_sha256": "c8ab744ea644388a7ef75ba7d8a2b684aab56ac538488f0db90df656e20700be"
    },
    {
      "id": "history:artifact-b504db9fa1cb",
      "legacy_id": "artifact-b504db9fa1cb",
      "kind": "historical",
      "title": "Scott letter to Clements Markham",
      "url": "vault.html#artifact-b504db9fa1cb",
      "summary": "Expedition letter explains the decision to send personnel home.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:488a20335dc62c22185b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-02-27",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b504db9fa1cb",
        "input_record_sha256": "c0b50bc3dc9d44c8bd1ddc67a48223f8d778d9f4847b66173a0e5be631fa91d7",
        "original_fields": {
          "title": "Scott letter to Clements Markham",
          "date": "1903-02-27",
          "institution": "Royal Museums Greenwich",
          "source_url": "https://www.rmg.co.uk/collections/archive/rmgc-object-384033",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Discovery expedition"
          ],
          "description": "Expedition letter explains the decision to send personnel home.",
          "artifact_id": "MRK/46/104",
          "id": "artifact-b504db9fa1cb",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Expedition letter explains the decision to send personnel home."
        }
      },
      "record_sha256": "26d29f47dd6e6138c50b2d6f5ae7d2ca3481fdfdf9b846018becfea05910a70e"
    },
    {
      "id": "history:artifact-b5b5db4cc144",
      "legacy_id": "artifact-b5b5db4cc144",
      "kind": "historical",
      "title": "Elephant Island party waving toward a boat",
      "url": "vault.html#artifact-b5b5db4cc144",
      "summary": "Frank Hurley photograph cataloged under a historical rescue caption.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d7058ddbe6ee4ee40eeb",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/elephant-island-loc.jpg",
          "caption": "Actual artifact image; source credit: Library of Congress.",
          "title": "Elephant Island party waving toward a boat",
          "href": "vault.html#artifact-b5b5db4cc144"
        },
        "reuse_notice": "LOC rights advisory: No known restrictions on publication.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1916",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b5b5db4cc144",
        "input_record_sha256": "78290a105db5f14e58cc956180179f7d5ee827059d23ec0a5f7e65d447eefec2",
        "original_fields": {
          "title": "Elephant Island party waving toward a boat",
          "date": "circa 1916",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2013646124/",
          "rights": "LOC rights advisory: No known restrictions on publication.",
          "categories": [
            "photography",
            "Imperial Trans-Antarctic Expedition"
          ],
          "description": "Frank Hurley photograph cataloged under a historical rescue caption.",
          "artifact_id": "LOC 2013646124",
          "notes": "Preserve distinction between catalog caption and unverified exact exposure event; not independently dated to rescue day.",
          "verification": "Institutional item metadata and explicit rights advisory checked.",
          "asset_status": "reuse-statement-verified",
          "id": "artifact-b5b5db4cc144",
          "visual_source": {
            "id": "artifact-b5b5db4cc144",
            "title": "Elephant Island party waving toward a boat",
            "official_source_url": "https://www.loc.gov/item/2013646124/",
            "official_viewer_url": "https://www.loc.gov/resource/cph.3a12746/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/pnp/cph/3a10000/3a12000/3a12700/3a12746r.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Frank Hurley photograph cataloged under a historical rescue caption."
        }
      },
      "record_sha256": "52ecfe209528936b7c40f4a1f12670cd48a9facd2859bb8624620e88ebdc8d2e"
    },
    {
      "id": "history:artifact-b86a41e607f8",
      "legacy_id": "artifact-b86a41e607f8",
      "kind": "historical",
      "title": "Bayliss Antarctica Sheet 1",
      "url": "vault.html#artifact-b86a41e607f8",
      "summary": "South-centered azimuthal equidistant map compiles Antarctic exploration.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:09e7ee41eda2dfd17161",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-13393.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 13393. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Bayliss Antarctica Sheet 1",
          "href": "vault.html#artifact-b86a41e607f8"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1939",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b86a41e607f8",
        "input_record_sha256": "a4a39233e7a31d810573aaa95960a149fde7c3970190bf665fdfeb8bb7ecf82e",
        "original_fields": {
          "title": "Bayliss Antarctica Sheet 1",
          "date": "1939",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=13393",
          "rights": "AADC scientific-data footer states CC BY4.0; scan-specific exception check pending.",
          "categories": [
            "map",
            "survey"
          ],
          "description": "South-centered azimuthal equidistant map compiles Antarctic exploration.",
          "artifact_id": "AADC 13393",
          "notes": "Projection is not a flat-earth cosmological assertion.",
          "id": "artifact-b86a41e607f8",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-b86a41e607f8",
            "title": "Bayliss Antarctica Sheet 1",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=13393",
            "official_viewer_url": "https://data.aad.gov.au/database/mapcat/antarctica/Bayliss-Cumpston/Bayliss_Cumpston_1939_Ed1_Ant1_13393.pdf",
            "direct_image_url": null,
            "visual_status": "primary-viewer-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "AADC scientific-data footer states CC BY4.0; scan-specific exception check pending.",
            "visual_type": "PDF scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact official PDF link; browser delivery not independently checked, tool reports size limit."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-13393.jpg",
            "width": 960,
            "height": 702,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 13393. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=13393",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "First PDF page rendered at 960px maximum dimension; no crop, reconstruction or AI enhancement."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "South-centered azimuthal equidistant map compiles Antarctic exploration."
        }
      },
      "record_sha256": "0edc4932c783db451dde43f857ca168aab12b5d7e17e13b5b1404d7a9317e2a3"
    },
    {
      "id": "history:artifact-b86c51590447",
      "legacy_id": "artifact-b86c51590447",
      "kind": "historical",
      "title": "Map to illustrate the paper on the \"First Crossing of Antarctica\" by Lincoln Ellsworth",
      "url": "vault.html#artifact-b86c51590447",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 12 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:cf24dbdef3fa635f1909",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1937",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b86c51590447",
        "input_record_sha256": "d8b8a841b1bc081266c2ba26f7b960f06369874169ad1c5bac5f88ac1b39641a",
        "original_fields": {
          "id": "artifact-b86c51590447",
          "artifact_id": "AADC map 3709",
          "accession": "AADC map 3709",
          "title": "Map to illustrate the paper on the \"First Crossing of Antarctica\" by Lincoln Ellsworth",
          "date": "March 1937",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3709",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 12 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/First_crossing_Ant_1935_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3709",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 12 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "25 x 52 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/First_crossing_Ant_1935_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 12 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "6991a18aedd2ab0566a44fa1246b799ba2cbe131231a94a7dc4fd98669eb59b2"
    },
    {
      "id": "history:artifact-b8e661735f7c",
      "legacy_id": "artifact-b8e661735f7c",
      "kind": "historical",
      "title": "First sun of the season on the Hut",
      "url": "vault.html#artifact-b8e661735f7c",
      "summary": "Cataloged expedition photograph: Five expedition members, two on skis, stand at the door of the hut. Skis stand upright in the snow nearby. Mount Erebus in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:213a517059fcdebe6192",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "8.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b8e661735f7c",
        "input_record_sha256": "e6c36c5e5c020fa146abe01518fad10a499a716985da2ab05cfc5708b2942572",
        "original_fields": {
          "id": "artifact-b8e661735f7c",
          "artifact_id": "P2005/5/956",
          "title": "First sun of the season on the Hut",
          "date": "8.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-956",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-956",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-956",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Five expedition members, two on skis, stand at the door of the hut. Skis stand upright in the snow nearby. Mount Erebus in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Five expedition members, two on skis, stand at the door of the hut. Skis stand upright in the snow nearby. Mount Erebus in the background."
        }
      },
      "record_sha256": "e79c5e24e8529a832fa4ea0bef4d5e4cf7db06c151f361fb7f224b2c20bb037b"
    },
    {
      "id": "history:artifact-b90df570c21e",
      "legacy_id": "artifact-b90df570c21e",
      "kind": "historical",
      "title": "The face of the Matterhorn Berg. October 8th 1911",
      "url": "vault.html#artifact-b90df570c21e",
      "summary": "Cataloged expedition photograph: An expedition member climbs the face of a jagged iceberg.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d793ffb0f058fc9b531d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "10.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b90df570c21e",
        "input_record_sha256": "dfaa46f6318f232d6b0c2e85eb96ba6a92d27fa67d029f36f863e31835341c70",
        "original_fields": {
          "id": "artifact-b90df570c21e",
          "artifact_id": "P2005/5/533",
          "title": "The face of the Matterhorn Berg. October 8th 1911",
          "date": "10.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-533",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-533",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-533",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: An expedition member climbs the face of a jagged iceberg.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: An expedition member climbs the face of a jagged iceberg."
        }
      },
      "record_sha256": "5193c922322ed1ba328f7034c1ba208c390a706e11843a7d97fadca2ca6e1902"
    },
    {
      "id": "history:artifact-ba7df98e2b13",
      "legacy_id": "artifact-ba7df98e2b13",
      "kind": "historical",
      "title": "Surveys and Soundings of the R.R.S. Discovery II 1929-30",
      "url": "vault.html#artifact-ba7df98e2b13",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 2 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:0e17729194108c35bc2f",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1932",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ba7df98e2b13",
        "input_record_sha256": "267b06541c6c1f2cebd009eb1c83debeba1beb3192ea4cad375f4f3bc7c97ec5",
        "original_fields": {
          "id": "artifact-ba7df98e2b13",
          "artifact_id": "AADC map 3704",
          "accession": "AADC map 3704",
          "title": "Surveys and Soundings of the R.R.S. Discovery II 1929-30",
          "date": "March-1932",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3704",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 2 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 2 250 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 2 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "9a38babdf744a1809ba25275ae0ed1c31701dc7ed7988679c098d5d7b5bed533"
    },
    {
      "id": "history:artifact-bab6323b14b8",
      "legacy_id": "artifact-bab6323b14b8",
      "kind": "historical",
      "title": "Rasmussen Island and coast behind (close-up of shore in summer)",
      "url": "vault.html#artifact-bab6323b14b8",
      "summary": "Cataloged expedition photograph: An expedition member climbs up a rocky cliff face above water.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:eb7fe81be484868ba81a",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-bab6323b14b8",
        "input_record_sha256": "21ee32ad506e6c57a61cb244bb7d3c53a15ac4e908f8c5bbfc485fd18770d7c7",
        "original_fields": {
          "id": "artifact-bab6323b14b8",
          "artifact_id": "P51/8/D246",
          "title": "Rasmussen Island and coast behind (close-up of shore in summer)",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Bingham, Edward William",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-d246",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-d246",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-d246",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: An expedition member climbs up a rocky cliff face above water.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: An expedition member climbs up a rocky cliff face above water."
        }
      },
      "record_sha256": "7bcaef606c99df43eb966d036ca108ba4de4ed3ddbeedb074cfede6872375cfe"
    },
    {
      "id": "history:artifact-bb31027da203",
      "legacy_id": "artifact-bb31027da203",
      "kind": "historical",
      "title": "Sheet SQ 41-42/15 Scullin Monolith, Mac. Robertson Land, Australian Antarctic Territory",
      "url": "vault.html#artifact-bb31027da203",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:85466747bd9dcd6e6c23",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-103.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 103. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 41-42/15 Scullin Monolith, Mac. Robertson Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-bb31027da203"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1970",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-bb31027da203",
        "input_record_sha256": "0a238bee6b66956bdd2400abf63a192ecf09c5d111844cd126d7a7b546904d2f",
        "original_fields": {
          "id": "artifact-bb31027da203",
          "artifact_id": "AADC map 103",
          "accession": "AADC map 103",
          "title": "Sheet SQ 41-42/15 Scullin Monolith, Mac. Robertson Land, Australian Antarctic Territory",
          "date": "March-1970",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=103",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-103.jpg",
            "width": 893,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 103. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=103",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "346b61cd1fc69935652add61f6449a772ddb42a9cff37d67511065ddc8ae453b"
    },
    {
      "id": "history:artifact-bb4da061f6fa",
      "legacy_id": "artifact-bb4da061f6fa",
      "kind": "historical",
      "title": "A.A.E. Main Base Locality with tracing copy.",
      "url": "vault.html#artifact-bb4da061f6fa",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 14, 51cm x 72cm. Commonwealth Bay.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-bb4da061f6fa",
        "input_record_sha256": "b5a4191e6b6265778cff7b8d36c84bc35ecc39d24063757783bf4bae467b7b12",
        "original_fields": {
          "id": "artifact-bb4da061f6fa",
          "artifact_id": "SLNSW AAE map 14",
          "accession": "Australasian Antarctic Expedition records, map 14",
          "title": "A.A.E. Main Base Locality with tracing copy.",
          "date": "c1912",
          "creator": "Stillwell, Frank Leslie.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 14, 51cm x 72cm. Commonwealth Bay.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 14, 51cm x 72cm. Commonwealth Bay."
        }
      },
      "record_sha256": "44124e4ed7113ff9d629eed2455fe3b1a059d29e4ddb0f1727b1d7567d1b1e32"
    },
    {
      "id": "history:artifact-bbfc419c1b48",
      "legacy_id": "artifact-bbfc419c1b48",
      "kind": "historical",
      "title": "Gough Island anchorage",
      "url": "vault.html#artifact-bbfc419c1b48",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-04-22",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-bbfc419c1b48",
        "input_record_sha256": "47c1e73bd708dea327076b70306a13f08ba1d79a9de102821281afd498c05023",
        "original_fields": {
          "title": "Gough Island anchorage",
          "date": "1904-04-22",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/313",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-bbfc419c1b48",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-bbfc419c1b48",
            "title": "Gough Island anchorage",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0313.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "8e9c8844b564e0bd1c56e65c76aaefa0a30d52fed0b0ae49d1e0e90f50d5412f"
    },
    {
      "id": "history:artifact-bc4486f5e8f4",
      "legacy_id": "artifact-bc4486f5e8f4",
      "kind": "historical",
      "title": "Emperor penguin eggs",
      "url": "vault.html#artifact-bc4486f5e8f4",
      "summary": "Cataloged expedition photograph: Three emperor eggs with ruler.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:73f0b450d5747cb5c9d2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-bc4486f5e8f4",
        "input_record_sha256": "a5303c3dc8ea69189fec06dcb1f0c575502faf812d77383d0338f0241b8c8445",
        "original_fields": {
          "id": "artifact-bc4486f5e8f4",
          "artifact_id": "P2005/5/839",
          "title": "Emperor penguin eggs",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-839",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-839",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-839",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Three emperor eggs with ruler.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Three emperor eggs with ruler."
        }
      },
      "record_sha256": "14b9f6377bcd9833d6b91938b327e63a67fd133c5fa3f972e8921c633235b0bd"
    },
    {
      "id": "history:artifact-be2c135e2a28",
      "legacy_id": "artifact-be2c135e2a28",
      "kind": "historical",
      "title": "Crystals in dark room of Cape Evans hut",
      "url": "vault.html#artifact-be2c135e2a28",
      "summary": "Cataloged expedition photograph: Close up of ice crystals.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a8f00b4a7a4e6e1b65bf",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-be2c135e2a28",
        "input_record_sha256": "d298f14adb08196b34179c68f96ee370bf4ea0d79be379b99a251bc5f2eac00a",
        "original_fields": {
          "id": "artifact-be2c135e2a28",
          "artifact_id": "P54/16/125",
          "title": "Crystals in dark room of Cape Evans hut",
          "date": "1912",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Debenham, Frank",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-125",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-125",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-125",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Debenham Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Close up of ice crystals.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Close up of ice crystals."
        }
      },
      "record_sha256": "bb70b7c11faa6a15980564403b3e4634e3d15e43a33d944b06810000eb9b5fd8"
    },
    {
      "id": "history:artifact-be35054ed9a9",
      "legacy_id": "artifact-be35054ed9a9",
      "kind": "historical",
      "title": "Sketch Map to illustrate the Exploration of the Swedish Antarctic Expedition 1902-3",
      "url": "vault.html#artifact-be35054ed9a9",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:59588e0534b2e2dd8fa7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-be35054ed9a9",
        "input_record_sha256": "8060c357ff3e5b6307eab0e31490d10d89e956a734ca3aff8ebe70d1d7592126",
        "original_fields": {
          "id": "artifact-be35054ed9a9",
          "artifact_id": "AADC map 3682",
          "accession": "AADC map 3682",
          "title": "Sketch Map to illustrate the Exploration of the Swedish Antarctic Expedition 1902-3",
          "date": "1904",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3682",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Swed_Ant_Exp_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3682",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 3 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "-",
          "physical_size": "24.5 x 38.7 cm",
          "catalog_notes": "By O. Nordenskiold and S.A. Duse 1902-3. Secant conical projection. 2 sketch maps on the one sheet. Left map \"Sketch map showing the track of the Swedish Antarctic Expedition\". Right map \"Sketch map to illustrate the Exploration of the Swedish Antarctic Expedition\" Extents for this map entry are for the right map.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Swed_Ant_Exp_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "0ae87629383f9d4c77408f7644ed70cdc013a66a8106b01379d90eb4ed578276"
    },
    {
      "id": "history:artifact-bf8832b22c1f",
      "legacy_id": "artifact-bf8832b22c1f",
      "kind": "historical",
      "title": "Psalter world map, Add MS 28681",
      "url": "vault.html#artifact-bf8832b22c1f",
      "summary": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ded91a7b295bdb685bea",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c. 1260",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-bf8832b22c1f",
        "input_record_sha256": "e1da3fae167fb743055039252f70ed6c6967b642b138fa2f54926b0eb30d3268",
        "original_fields": {
          "id": "artifact-bf8832b22c1f",
          "title": "Psalter world map, Add MS 28681",
          "creator": "Unknown English illuminator",
          "date": "c. 1260",
          "institution": "British Library",
          "source_url": "https://searcharchives.bl.uk/catalog/032-002020101",
          "supplemental_or_image_url": "https://omci.inha.fr/s/ocmi/item/259",
          "classification": "Christian mappa mundi",
          "relevance_and_caution": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine.",
          "categories": [
            "Christian mappa mundi"
          ],
          "asset_status": "source-link-only",
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine."
        }
      },
      "record_sha256": "a5be6122ed2e3bf331aaa6cd67ee02544eb08781e5677af8bc6205706b1f44c0"
    },
    {
      "id": "history:artifact-buache-bnf1754",
      "legacy_id": "artifact-buache-bnf1754",
      "kind": "historical",
      "title": "Buache’s Carte des terres australes",
      "url": "vault.html#artifact-buache-bnf1754",
      "summary": "A southern-region chart compiled from Bouvet de Lozier’s expedition material. The BnF dates this edition to 1754. It is not a modern subglacial survey and is distinct from later Buache maps.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:845a3f1a3be93fca8ad5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "BnF commercial reproduction requires authorization; source link only. No image copied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1754",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-buache-bnf1754",
        "input_record_sha256": "e53e0c91eb8fa54129dba1ec492ff33e106cefb441d00ffe04c89ae2ef0e5e44",
        "original_fields": {
          "id": "artifact-buache-bnf1754",
          "title": "Buache’s Carte des terres australes",
          "date": "1754",
          "institution": "Bibliothèque nationale de France",
          "source_url": "https://catalogue.bnf.fr/ark:/12148/cb40592237k",
          "artifact_id": "FRBNF40592237",
          "description": "A southern-region chart compiled from Bouvet de Lozier’s expedition material. The BnF dates this edition to 1754. It is not a modern subglacial survey and is distinct from later Buache maps.",
          "rights": "BnF commercial reproduction requires authorization; source link only. No image copied.",
          "rights_url": "https://www.bnf.fr/fr/faire-une-utilisation-commerciale-dune-reproduction",
          "browsing_group": "regional-maps",
          "categories": [
            "regional map",
            "Antarctic historical geography"
          ],
          "embed_allowed": false,
          "asset_status": "source-link-only",
          "verification": "Institutional object/catalog record checked 2026-10-28; no proof of modern speculative claims.",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A southern-region chart compiled from Bouvet de Lozier’s expedition material. The BnF dates this edition to 1754. It is not a modern subglacial survey and is distinct from later Buache maps."
        }
      },
      "record_sha256": "c629fc1ae9b72728caca707ec49f3638a8647b990ea5045b5d3edb5fe164ba0d"
    },
    {
      "id": "history:artifact-c01c4280e6cd",
      "legacy_id": "artifact-c01c4280e6cd",
      "kind": "historical",
      "title": "Burgee, Royal Yacht Squadron — Terra Nova expedition",
      "url": "vault.html#artifact-c01c4280e6cd",
      "summary": "Individually cataloged burgee associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1616.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c01c4280e6cdc644256c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c01c4280e6cd",
        "input_record_sha256": "a67391ebcef910208335e3699e50abd2f004d00c9c62e950a2506100e896fe21",
        "original_fields": {
          "id": "artifact-c01c4280e6cd",
          "title": "Burgee, Royal Yacht Squadron — Terra Nova expedition",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212316",
          "accession": "ZBA1616",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged burgee associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1616.",
          "visual_url": "https://collections.rmg.co.uk/media/2/151/261/l7102.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212316",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Burgee, Royal Yacht Squadron",
          "notes": "",
          "artifact_id": "ZBA1616",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/2/151/261/l7102.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged burgee associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1616."
        }
      },
      "record_sha256": "6e3876d22e850c947b55bf07767280fcfe93aaa07a59d178f9db9f6ffe6a0ed8"
    },
    {
      "id": "history:artifact-c301b6133e40",
      "legacy_id": "artifact-c301b6133e40",
      "kind": "historical",
      "title": "Sheets SQ 40-41/13 & Part SR 40-41/1 Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/15 & Part SR 39-40/3]",
      "url": "vault.html#artifact-c301b6133e40",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b2acfabce808aa8be402",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-101.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 101. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 40-41/13 & Part SR 40-41/1 Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/15 & Part SR 39-40/3]",
          "href": "vault.html#artifact-c301b6133e40"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "October 1967",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c301b6133e40",
        "input_record_sha256": "57d7d5c42b34b52a1cc02fa9a9e9265bd847c4347b6506424bba2064b955323d",
        "original_fields": {
          "id": "artifact-c301b6133e40",
          "artifact_id": "AADC map 101",
          "accession": "AADC map 101",
          "title": "Sheets SQ 40-41/13 & Part SR 40-41/1 Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/15 & Part SR 39-40/3]",
          "date": "October 1967",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=101",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ40-41_13_%26_Part_SR40-41_1_1967_250k_101_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=101",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "71 x 67 cm",
          "catalog_notes": "Rayner Peak & Dismal Mountains SQ 40-41/13 & Part 40-41/1 have been numbered according to a map numbering system adopted by Department of National Mapping in 1967 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/15 & Part SR 39-40/3.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ40-41_13_%26_Part_SR40-41_1_1967_250k_101_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-101.jpg",
            "width": 848,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 101. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=101",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "b4c2eb1e7f8cf005d9c092a3eded7f14f1702643172223339adf69d2d5b168dd"
    },
    {
      "id": "history:artifact-c45e9a04cab9",
      "legacy_id": "artifact-c45e9a04cab9",
      "kind": "historical",
      "title": "J.I. Moore with Imp (dog), 15 December 1936",
      "url": "vault.html#artifact-c45e9a04cab9",
      "summary": "Cataloged expedition photograph: Moore crouches on the snow with a sled dog (poor quality image).",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5f152363a2d3d50d37f5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c45e9a04cab9",
        "input_record_sha256": "2b5d31bfdda29afb2685eb1d2fe0bf7a64ebd1df3427dd7644a37b9f0d78ad44",
        "original_fields": {
          "id": "artifact-c45e9a04cab9",
          "artifact_id": "P51/8/F640",
          "title": "J.I. Moore with Imp (dog), 15 December 1936",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f640",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f640",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f640",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore crouches on the snow with a sled dog (poor quality image).",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore crouches on the snow with a sled dog (poor quality image)."
        }
      },
      "record_sha256": "d13c3e31a730cd51a4ffed9ed6d0cfd412a8da5bc30bbff2c1ffb87c7a3ed69e"
    },
    {
      "id": "history:artifact-c5caa80129d3",
      "legacy_id": "artifact-c5caa80129d3",
      "kind": "historical",
      "title": "Ponting and Nelson camped by the Penguinry, Cape Royds. November 1911",
      "url": "vault.html#artifact-c5caa80129d3",
      "summary": "Cataloged expedition photograph: Ponting and Nelson stand by a pyramid tent and a loaded sledge. A tripod stands on the snow between them.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5cd1eb3ff4c5df02bfa6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "11.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c5caa80129d3",
        "input_record_sha256": "ee6c85b59434e43527757d66cb059ead592cb662577990793456376dc30745aa",
        "original_fields": {
          "id": "artifact-c5caa80129d3",
          "artifact_id": "P2005/5/669",
          "title": "Ponting and Nelson camped by the Penguinry, Cape Royds. November 1911",
          "date": "11.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-669",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-669",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-669",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Ponting and Nelson stand by a pyramid tent and a loaded sledge. A tripod stands on the snow between them.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Ponting and Nelson stand by a pyramid tent and a loaded sledge. A tripod stands on the snow between them."
        }
      },
      "record_sha256": "4de9a96b13e31629f7deddb097dbf4699d8dccc9ff8211de2488121cbd53bffe"
    },
    {
      "id": "history:artifact-c8473d708a47",
      "legacy_id": "artifact-c8473d708a47",
      "kind": "historical",
      "title": "Prima Pars, Petri Apiani Cosmographia",
      "url": "vault.html#artifact-c8473d708a47",
      "summary": "Instructional astronomy and geography; distinguish celestial mechanics from terrestrial surveying.",
      "claim": null,
      "topics": [
        "Cosmology & celestial charts"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:74351ff78458d4dd5a54",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "No Copyright – United States; metadata CC0.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1540",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c8473d708a47",
        "input_record_sha256": "1bea13cdc8e12dcba8bd87d6441c2fa6ba02ec4ca90e3d83d2de5d560b63e805",
        "original_fields": {
          "id": "artifact-c8473d708a47",
          "title": "Prima Pars, Petri Apiani Cosmographia",
          "creator": "Peter Apian",
          "date": "1540",
          "institution": "Smithsonian Libraries and Archives",
          "source_url": "https://www.si.edu/object/silgoi_68483",
          "supplemental_or_image_url": null,
          "classification": "Cosmographical diagram",
          "relevance_and_caution": "Instructional astronomy and geography; distinguish celestial mechanics from terrestrial surveying.",
          "rights": "No Copyright – United States; metadata CC0.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Instructional astronomy and geography; distinguish celestial mechanics from terrestrial surveying.",
          "categories": [
            "Cosmographical diagram"
          ],
          "asset_status": "source-link-only",
          "browsing_group": "celestial-diagrams",
          "browse_topic": "Cosmology & celestial charts",
          "kind": "historical",
          "label": "record",
          "summary": "Instructional astronomy and geography; distinguish celestial mechanics from terrestrial surveying."
        }
      },
      "record_sha256": "49a0c6878411f5d2f26c364d6fc4e0d4d12400b8919e34fe324ec2baf5126736"
    },
    {
      "id": "history:artifact-c8acf43125b3",
      "legacy_id": "artifact-c8acf43125b3",
      "kind": "historical",
      "title": "Sheet SQ 38-39/11 Mount Riiser-Larsen, Enderby Land, Australian Antarctic Territory [SQ 39-40/16]",
      "url": "vault.html#artifact-c8acf43125b3",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:020a3c4044da46ebe2a8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-96.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 96. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 38-39/11 Mount Riiser-Larsen, Enderby Land, Australian Antarctic Territory [SQ 39-40/16]",
          "href": "vault.html#artifact-c8acf43125b3"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1963",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c8acf43125b3",
        "input_record_sha256": "0498845f45cd73952712f3f175a595c59d654adc4a3412c6e510ed8cb2c54912",
        "original_fields": {
          "id": "artifact-c8acf43125b3",
          "artifact_id": "AADC map 96",
          "accession": "AADC map 96",
          "title": "Sheet SQ 38-39/11 Mount Riiser-Larsen, Enderby Land, Australian Antarctic Territory [SQ 39-40/16]",
          "date": "March-1963",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=96",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-96.jpg",
            "width": 939,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 96. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=96",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "13b21c01459a920b71428d6f89635dbaeb71bb05000a00625d9ddad5bbeddc6a"
    },
    {
      "id": "history:artifact-c8c2f41b81fd",
      "legacy_id": "artifact-c8c2f41b81fd",
      "kind": "historical",
      "title": "Insula Atlantis",
      "url": "vault.html#artifact-c8c2f41b81fd",
      "summary": "Kircher’s imagined Atlantic island.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d1062659e8b82f318324",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-c8c2f41b81fd.jpg",
          "caption": "Actual artifact image; source credit: Library of Congress.",
          "title": "Insula Atlantis",
          "href": "vault.html#artifact-c8c2f41b81fd"
        },
        "reuse_notice": "No known restrictions on publication",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1665 (catalog attribution)",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c8c2f41b81fd",
        "input_record_sha256": "eeb53f8ecff4774b8419fb07e49f4428e634b14d75a1c03d5b3acdf429a76a0a",
        "original_fields": {
          "title": "Insula Atlantis",
          "date": "1665 (catalog attribution)",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2002698490/",
          "rights": "No known restrictions on publication",
          "categories": [
            "map",
            "imagined-geography",
            "Atlantis"
          ],
          "description": "Kircher’s imagined Atlantic island.",
          "identifier": "2002698490",
          "notes": "LOC warns caption-card metadata is unverified; reproduction source needs care.",
          "id": "artifact-c8c2f41b81fd",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "2002698490",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-c8c2f41b81fd",
            "title": "Insula Atlantis",
            "official_source_url": "https://www.loc.gov/item/2002698490/",
            "official_viewer_url": "https://www.loc.gov/resource/cph.3b23483/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/pnp/cph/3b20000/3b23000/3b23400/3b23483r.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Kircher’s imagined Atlantic island."
        }
      },
      "record_sha256": "3ae177bf1ed57c1abb07dfb73a4c4cc0f9b7799c1f41f05487564a11150fe1de"
    },
    {
      "id": "history:artifact-c924ac2bb5d7",
      "legacy_id": "artifact-c924ac2bb5d7",
      "kind": "historical",
      "title": "Meares and Dimitri at the blubber stove in the “Discovery” Hut at Hut Point. November 3rd 1911",
      "url": "vault.html#artifact-c924ac2bb5d7",
      "summary": "Cataloged expedition photograph: In the interior of the hut, Meares, smoking a pipe, and Dimitri Geroff sit on boxes at a brick stove on which sit three metal pans. Clothing hangs from a line suspended from the ceiling, boxes are stacked against the walls.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f3c178c5eb7cd5d52eb8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "11.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c924ac2bb5d7",
        "input_record_sha256": "fbbaf4866cf306bb3198c3ba43d88744ded51532eb9bd333fdddf385aaf417d5",
        "original_fields": {
          "id": "artifact-c924ac2bb5d7",
          "artifact_id": "P2005/5/595",
          "title": "Meares and Dimitri at the blubber stove in the “Discovery” Hut at Hut Point. November 3rd 1911",
          "date": "11.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-595",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-595",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-595",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: In the interior of the hut, Meares, smoking a pipe, and Dimitri Geroff sit on boxes at a brick stove on which sit three metal pans. Clothing hangs from a line suspended from the ceiling, boxes are stacked against the walls.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: In the interior of the hut, Meares, smoking a pipe, and Dimitri Geroff sit on boxes at a brick stove on which sit three metal pans. Clothing hangs from a line suspended from the ceiling, boxes are stacked against the walls."
        }
      },
      "record_sha256": "4c531d8cb5f9826b71260a41ceeaf0e69e97d2c5edb4413810abb65a31b59916"
    },
    {
      "id": "history:artifact-c9b0891468ab",
      "legacy_id": "artifact-c9b0891468ab",
      "kind": "historical",
      "title": "Crampons — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-c9b0891468ab",
      "summary": "Individually cataloged crampons associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4240.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c9b0891468ab9a95bb1a",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c9b0891468ab",
        "input_record_sha256": "88972778dda1c2a5b12c5c7fde70b372a2979bb5926f2abb5ee07f18ed2dd58d",
        "original_fields": {
          "id": "artifact-c9b0891468ab",
          "title": "Crampons — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3995",
          "accession": "AAA4240",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged crampons associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4240.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/583/rv1540.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3995",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Crampons",
          "notes": "",
          "artifact_id": "AAA4240",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/583/rv1540.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged crampons associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4240."
        }
      },
      "record_sha256": "105b5a7ce9b5e14a8452476e1dd23288058916d1d75547b7815d209c86d478a1"
    },
    {
      "id": "history:artifact-c9d9729f0482",
      "legacy_id": "artifact-c9d9729f0482",
      "kind": "historical",
      "title": "Sketch plans of S.Y. Aurora 1874 showing side cross-section, deck plan and between deck plan. See also Map 2",
      "url": "vault.html#artifact-c9d9729f0482",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 1, 70cm x 101 cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-1914",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c9d9729f0482",
        "input_record_sha256": "cf62d68a0472d4bb43bbaedbcf97f6b4bcd781cf053469322f6368554a0252b2",
        "original_fields": {
          "id": "artifact-c9d9729f0482",
          "artifact_id": "SLNSW AAE map 1",
          "accession": "Australasian Antarctic Expedition records, map 1",
          "title": "Sketch plans of S.Y. Aurora 1874 showing side cross-section, deck plan and between deck plan. See also Map 2",
          "date": "1911-1914",
          "creator": "Davis, John King.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "manuscript-plan",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 1, 70cm x 101 cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 1, 70cm x 101 cm."
        }
      },
      "record_sha256": "abd430a9ac6feae4ba282a69d4bc05f4c48870f6fa132d07ac8c2410a2149802"
    },
    {
      "id": "history:artifact-ca0293e761eb",
      "legacy_id": "artifact-ca0293e761eb",
      "kind": "historical",
      "title": "Map plotting the track of the S. Y. Aurora in the Davis Sea, Southern Ocean, 1913",
      "url": "vault.html#artifact-ca0293e761eb",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 9, 61cm x 101cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ca0293e761eb",
        "input_record_sha256": "052c5c1dde5df8365a4d6b2d3c97964418785f2b811b8bbed8768c4132592187",
        "original_fields": {
          "id": "artifact-ca0293e761eb",
          "artifact_id": "SLNSW AAE map 9",
          "accession": "Australasian Antarctic Expedition records, map 9",
          "title": "Map plotting the track of the S. Y. Aurora in the Davis Sea, Southern Ocean, 1913",
          "date": "1913",
          "creator": "Not identified in inventory",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 9, 61cm x 101cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 9, 61cm x 101cm."
        }
      },
      "record_sha256": "d6fccb2d61eca706a64d7c61e57e6e623bafb90bf0c7f80e2113e243b0162a17"
    },
    {
      "id": "history:artifact-ca2b3553ca9c",
      "legacy_id": "artifact-ca2b3553ca9c",
      "kind": "historical",
      "title": "Sledge harness — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-ca2b3553ca9c",
      "summary": "Individually cataloged sledge harness associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4219.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ca2b3553ca9cb2432258",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ca2b3553ca9c",
        "input_record_sha256": "37b09cfa46cf107921fe931239193c72bddacf86f4d00fcdfe8408da0ff8143d",
        "original_fields": {
          "id": "artifact-ca2b3553ca9c",
          "title": "Sledge harness — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3974",
          "accession": "AAA4219",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged sledge harness associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4219.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sledge harness",
          "notes": "",
          "artifact_id": "AAA4219",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sledge harness associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4219."
        }
      },
      "record_sha256": "49e0a608a2872978d8576f062fdd7b4af199525fa61fa4a76721b5cdc7a70579"
    },
    {
      "id": "history:artifact-cbdb4faa44cd",
      "legacy_id": "artifact-cbdb4faa44cd",
      "kind": "historical",
      "title": "Kunyu wanguo quantu",
      "url": "vault.html#artifact-cbdb4faa44cd",
      "summary": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6f2cf5af851855446995",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1602",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-cbdb4faa44cd",
        "input_record_sha256": "9127a1371afacf1635050911010778d8804e1ccf024a95d41a4b508b92b35723",
        "original_fields": {
          "id": "artifact-cbdb4faa44cd",
          "title": "Kunyu wanguo quantu",
          "creator": "Matteo Ricci with Li Zhizao and Chinese collaborators",
          "date": "1602",
          "institution": "University of Minnesota, James Ford Bell Library",
          "source_url": "https://www.lib.umn.edu/collections/special/bell/ricci",
          "supplemental_or_image_url": null,
          "classification": "World map",
          "relevance_and_caution": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory.",
          "categories": [
            "World map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-cbdb4faa44cd",
            "title": "Kunyu wanguo quantu",
            "official_source_url": "https://www.lib.umn.edu/collections/special/bell/ricci",
            "official_viewer_url": "https://umedia.lib.umn.edu/item/p16022coll251:8823",
            "direct_image_url": null,
            "visual_status": "primary-viewer-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact View the Ricci Map link on James Ford Bell Library page; viewer returned403 to tool."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory."
        }
      },
      "record_sha256": "a68d36163050e534d48218db0d7953dbeb0f2619f1781a6a9a9c3d15c37af6eb"
    },
    {
      "id": "history:artifact-cbecfd3ef285",
      "legacy_id": "artifact-cbecfd3ef285",
      "kind": "historical",
      "title": "Griffith Taylor, Debenham & Gran in their Cubicle",
      "url": "vault.html#artifact-cbecfd3ef285",
      "summary": "Cataloged expedition photograph: In the interior of the hut, Taylor, smoking a pipe, works on a piece of equipment, Debenham reads and Gran writes in a book. They sit at a table in between two sets of bunks. Book shelves are on the wall behind the table.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5811e734961044d1a6cf",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "5.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-cbecfd3ef285",
        "input_record_sha256": "456f8fe4a004cad20a8cbb13b0e6e793a8ac06ceb8bcc7ee9a85a716d357ff72",
        "original_fields": {
          "id": "artifact-cbecfd3ef285",
          "artifact_id": "P2005/5/399",
          "title": "Griffith Taylor, Debenham & Gran in their Cubicle",
          "date": "5.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-399",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-399",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-399",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: In the interior of the hut, Taylor, smoking a pipe, works on a piece of equipment, Debenham reads and Gran writes in a book. They sit at a table in between two sets of bunks. Book shelves are on the wall behind the table.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: In the interior of the hut, Taylor, smoking a pipe, works on a piece of equipment, Debenham reads and Gran writes in a book. They sit at a table in between two sets of bunks. Book shelves are on the wall behind the table."
        }
      },
      "record_sha256": "3fa8a23f896cebb1b2ee1a35313f390e38e78b43792433982346cc3bd318c754"
    },
    {
      "id": "history:artifact-cd99d1b364cb",
      "legacy_id": "artifact-cd99d1b364cb",
      "kind": "historical",
      "title": "‘Quest’ at San Miguel, Azores",
      "url": "vault.html#artifact-cd99d1b364cb",
      "summary": "Cataloged expedition photograph: Sail and steam powered ship ‘Quest’ lying at anchor. Settlement on the coast in the background (blurred image).",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:1f820c4daee8333edd2c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-cd99d1b364cb",
        "input_record_sha256": "071d34af569fac92f322bd3f538694849a7526f8246cfefc547b29ba64461737",
        "original_fields": {
          "id": "artifact-cd99d1b364cb",
          "artifact_id": "P2002/28/245_c",
          "title": "‘Quest’ at San Miguel, Azores",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Not identified in consulted record",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-245_c",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-245_c",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-245_c",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "Shackleton-Rowett Antarctic Expedition 1921-22",
            "Shackleton–Rowett expedition"
          ],
          "description": "Cataloged expedition photograph: Sail and steam powered ship ‘Quest’ lying at anchor. Settlement on the coast in the background (blurred image).",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Sail and steam powered ship ‘Quest’ lying at anchor. Settlement on the coast in the background (blurred image)."
        }
      },
      "record_sha256": "fa913b7f137f0adfddf978122021a8c17ced2ad60325ea1ff56f1d18bdb4cd65"
    },
    {
      "id": "history:artifact-ce2047a31796",
      "legacy_id": "artifact-ce2047a31796",
      "kind": "historical",
      "title": "Ice axe — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-ce2047a31796",
      "summary": "Individually cataloged ice axe associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4222.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ce2047a31796243265f1",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ce2047a31796",
        "input_record_sha256": "0283047b660d10ca7fcc6fa10145ef5445219002aab1a3302b14da8083e9706c",
        "original_fields": {
          "id": "artifact-ce2047a31796",
          "title": "Ice axe — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3977",
          "accession": "AAA4222",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged ice axe associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4222.",
          "visual_url": "https://collections.rmg.co.uk/media/3/351/652/rw0119.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3977",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Ice axe",
          "notes": "",
          "artifact_id": "AAA4222",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/351/652/rw0119.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged ice axe associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4222."
        }
      },
      "record_sha256": "794627fb9b62a5c6cd0f3b157bae546cd1b4cd44ff1e0215ded4f5a939153883"
    },
    {
      "id": "history:artifact-cf3cb698c9e2",
      "legacy_id": "artifact-cf3cb698c9e2",
      "kind": "historical",
      "title": "Rennick and Drake making friendly advances to Adelie penguins. Feb. 9th 1911.",
      "url": "vault.html#artifact-cf3cb698c9e2",
      "summary": "Cataloged expedition photograph: Rennick and Drake walk towards a group of five Adelie penguins who stand on a patch of snow on a beach. Hut in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b08e30c39540891e9c10",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "9.2.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-cf3cb698c9e2",
        "input_record_sha256": "f01cbb827858a95a576bd1f1a9809b8a301a6d58c44057006e3578e5160015df",
        "original_fields": {
          "id": "artifact-cf3cb698c9e2",
          "artifact_id": "P2005/5/232",
          "title": "Rennick and Drake making friendly advances to Adelie penguins. Feb. 9th 1911.",
          "date": "9.2.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-232",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-232",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-232",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Rennick and Drake walk towards a group of five Adelie penguins who stand on a patch of snow on a beach. Hut in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Rennick and Drake walk towards a group of five Adelie penguins who stand on a patch of snow on a beach. Hut in background."
        }
      },
      "record_sha256": "a04afa2e589d74f747ddf4693095a32a9d1bf070276d00645aaca28bd34db865"
    },
    {
      "id": "history:artifact-cfbfb1f40012",
      "legacy_id": "artifact-cfbfb1f40012",
      "kind": "historical",
      "title": "Laying a depot. H. & P’s biscuits. Feb. 8th 1911.",
      "url": "vault.html#artifact-cfbfb1f40012",
      "summary": "Cataloged expedition photograph: Two expedition members unload wooden boxes containing Huntly and Palmer’s biscuits from a sledge, another is stacking boxes behind around a flagpole on a mound of gravel. A flag flies in the wind.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aa2a56397005e85094f0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "8.2.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-cfbfb1f40012",
        "input_record_sha256": "6c464d5ce79f355068a955a167ec77cd0bb179c8a1abc3310cf53f1acd755b75",
        "original_fields": {
          "id": "artifact-cfbfb1f40012",
          "artifact_id": "P2005/5/223",
          "title": "Laying a depot. H. & P’s biscuits. Feb. 8th 1911.",
          "date": "8.2.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-223",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-223",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-223",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Two expedition members unload wooden boxes containing Huntly and Palmer’s biscuits from a sledge, another is stacking boxes behind around a flagpole on a mound of gravel. A flag flies in the wind.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Two expedition members unload wooden boxes containing Huntly and Palmer’s biscuits from a sledge, another is stacking boxes behind around a flagpole on a mound of gravel. A flag flies in the wind."
        }
      },
      "record_sha256": "bbe19599d80b058d7fabc46f766191729468972f04a6654cb451165f60a6e055"
    },
    {
      "id": "history:artifact-cfdd92c3cc66",
      "legacy_id": "artifact-cfdd92c3cc66",
      "kind": "historical",
      "title": "South Polar Regions to illustrate the paper by H.R. Mill, D.Sc., LL.D.",
      "url": "vault.html#artifact-cfdd92c3cc66",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:65c702475e65fcf3c905",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-cfdd92c3cc66",
        "input_record_sha256": "b5779123bcc2fd654376aa8533cd9ad41c4c7fd8f9cde34334c27e6d48df0472",
        "original_fields": {
          "id": "artifact-cfdd92c3cc66",
          "artifact_id": "AADC map 3693",
          "accession": "AADC map 3693",
          "title": "South Polar Regions to illustrate the paper by H.R. Mill, D.Sc., LL.D.",
          "date": "1912",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3693",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/South_Polar_Reg_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3693",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 40 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "-",
          "physical_size": "34.5 x 29.5 cm",
          "catalog_notes": "Equidistant zenithal projection",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/South_Polar_Reg_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "4b775f1c2a3bdbd17a0bbf6f03c8c6879e449f48fe24272e1fca410734140f74"
    },
    {
      "id": "history:artifact-d03d945b53a2",
      "legacy_id": "artifact-d03d945b53a2",
      "kind": "historical",
      "title": "Work of the National Antarctic Expedition",
      "url": "vault.html#artifact-d03d945b53a2",
      "summary": "Discovery expedition survey coverage.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904 survey; publication date not specified",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d03d945b53a2",
        "input_record_sha256": "0fbcfcebe6c5c1ff6ce30026ad5871b2aefbe8d6730e8f0082263618a9ce9249",
        "original_fields": {
          "title": "Work of the National Antarctic Expedition",
          "date": "1902–1904 survey; publication date not specified",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Discovery expedition survey coverage.",
          "identifier": "Maps 88710.(8.)",
          "id": "artifact-d03d945b53a2",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 88710.(8.)",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-d03d945b53a2",
            "title": "Work of the National Antarctic Expedition",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/8940418df2fd59f27a775cb1c4fb8c5caed2584c-425x400.jpg/map-showing-the-work-of-the-national-antarctic-expedition,-1902-3-4.-bl-maps-88710.(8.).jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Discovery expedition survey coverage."
        }
      },
      "record_sha256": "3026f251d2d80b126b846c244a84aeb222f8cc237bb8e9a13c4a90a6ecca856b"
    },
    {
      "id": "history:artifact-d15c43c58730",
      "legacy_id": "artifact-d15c43c58730",
      "kind": "historical",
      "title": "Hanson’s grave at Cape Adare",
      "url": "vault.html#artifact-d15c43c58730",
      "summary": "Cataloged expedition photograph: Grave by rock with cross on top.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:88618270e1c5db7d04a9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d15c43c58730",
        "input_record_sha256": "4817ab578a453ae96452ad88b9ca91ab2e9cd6d2efe6b886367f78d6730c5f33",
        "original_fields": {
          "id": "artifact-d15c43c58730",
          "artifact_id": "P48/14/130",
          "title": "Hanson’s grave at Cape Adare",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Levick, George Murray",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-130",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-130",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-130",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Levick Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Grave by rock with cross on top.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Grave by rock with cross on top."
        }
      },
      "record_sha256": "24e273d3be3c059c1a84bac41bf82227f863039eda92c009b8a90079ce5661d7"
    },
    {
      "id": "history:artifact-d4c77c59caad",
      "legacy_id": "artifact-d4c77c59caad",
      "kind": "historical",
      "title": "A.A.E. Second Base. Eastern Sledge journey from Winter Quarters compiled from traversees, sun observations, etc",
      "url": "vault.html#artifact-d4c77c59caad",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 22, 69cm x 103cm. Shackleton Glacier. Harrison Island. Watson's Nunataks. New Island. Bay of Winds. Kennedy Island. Watson Glacier. Mount Davis. Pyramid Mount.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912 1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d4c77c59caad",
        "input_record_sha256": "04cc8f07480d5df00f493f5100923e7c493c5ed648125edb4b78d735ded8763e",
        "original_fields": {
          "id": "artifact-d4c77c59caad",
          "artifact_id": "SLNSW AAE map 22",
          "accession": "Australasian Antarctic Expedition records, map 22",
          "title": "A.A.E. Second Base. Eastern Sledge journey from Winter Quarters compiled from traversees, sun observations, etc",
          "date": "1912 1913",
          "creator": "Kennedy, Alexander L.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 22, 69cm x 103cm. Shackleton Glacier. Harrison Island. Watson's Nunataks. New Island. Bay of Winds. Kennedy Island. Watson Glacier. Mount Davis. Pyramid Mount.",
          "visual_url": "http://acms.sl.nsw.gov.au/album/albumView.aspx?itemID=948002&acmsid=0",
          "official_viewer_url": "http://acms.sl.nsw.gov.au/album/albumView.aspx?itemID=948002&acmsid=0",
          "embed_allowed": false,
          "verification_status": "Inventory item verified; linked legacy scan delivery unverified.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "primary-viewer-link-delivery-unverified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; linked legacy scan delivery unverified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 22, 69cm x 103cm. Shackleton Glacier. Harrison Island. Watson's Nunataks. New Island. Bay of Winds. Kennedy Island. Watson Glacier. Mount Davis. Pyramid Mount."
        }
      },
      "record_sha256": "2a29492fea2b11b6744c7ddd8ae3e08fe73f13390a6d3ce058c12b3fe710846c"
    },
    {
      "id": "history:artifact-d53ef0ff295f",
      "legacy_id": "artifact-d53ef0ff295f",
      "kind": "historical",
      "title": "Buch der Natur universe diagram",
      "url": "vault.html#artifact-d53ef0ff295f",
      "summary": "Stacked visual bands do not establish terrestrial shape.",
      "claim": null,
      "topics": [
        "Cosmology & celestial charts"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:992a90b8d0f5644b359a",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1481 edition",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d53ef0ff295f",
        "input_record_sha256": "377d9bd00b4e70f79f3238ee75726abd1d5ae5237a3664d06c986b05feb03bd3",
        "original_fields": {
          "id": "artifact-d53ef0ff295f",
          "title": "Buch der Natur universe diagram",
          "creator": "Konrad von Megenberg",
          "date": "1481 edition",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj74",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s74.jpg",
          "classification": "Christian celestial diagram",
          "relevance_and_caution": "Stacked visual bands do not establish terrestrial shape.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Stacked visual bands do not establish terrestrial shape.",
          "categories": [
            "Christian celestial diagram"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-d53ef0ff295f",
            "title": "Buch der Natur universe diagram",
            "official_source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj74",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj74",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s74.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_group": "celestial-diagrams",
          "browse_topic": "Cosmology & celestial charts",
          "kind": "historical",
          "label": "record",
          "summary": "Stacked visual bands do not establish terrestrial shape."
        }
      },
      "record_sha256": "9e6bc2d4e79fb320671d781883f4044828cf388627b56a7fc502c63d81047ddb"
    },
    {
      "id": "history:artifact-d640e57220a4",
      "legacy_id": "artifact-d640e57220a4",
      "kind": "historical",
      "title": "Detail of floe, and penguins. Dec. 24th 1910",
      "url": "vault.html#artifact-d640e57220a4",
      "summary": "Cataloged expedition photograph: Broken pack ice with penguins in the middle distance.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c8669c4ae36a34884830",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "24.12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d640e57220a4",
        "input_record_sha256": "09e101881ccfe21924a9dccf876ec37321a665f6f1e650600c728bf1c45dc130",
        "original_fields": {
          "id": "artifact-d640e57220a4",
          "artifact_id": "P2005/5/48",
          "title": "Detail of floe, and penguins. Dec. 24th 1910",
          "date": "24.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-48",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-48",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-48",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Broken pack ice with penguins in the middle distance.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Broken pack ice with penguins in the middle distance."
        }
      },
      "record_sha256": "c8e227576042d0367129d858e552b93acbda36204383541c5c587a44e78773cf"
    },
    {
      "id": "history:artifact-d6b7777e108a",
      "legacy_id": "artifact-d6b7777e108a",
      "kind": "historical",
      "title": "Hooper and Dimitri and a Weddell Seal at Cape Evans. March 1911",
      "url": "vault.html#artifact-d6b7777e108a",
      "summary": "Cataloged expedition photograph: Hooper and Dimitri Geroff stand on the ice by a seal which lies at their feet. Hooper prods it with a stick. Coast and icebergs in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:cc9976bf0a10d35ed61d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d6b7777e108a",
        "input_record_sha256": "f79d721f703359dee8a26409bd9f89a595a04469cc7e64ec3b8dd74b1bcbcf47",
        "original_fields": {
          "id": "artifact-d6b7777e108a",
          "artifact_id": "P2005/5/1121",
          "title": "Hooper and Dimitri and a Weddell Seal at Cape Evans. March 1911",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1121",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1121",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1121",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Hooper and Dimitri Geroff stand on the ice by a seal which lies at their feet. Hooper prods it with a stick. Coast and icebergs in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Hooper and Dimitri Geroff stand on the ice by a seal which lies at their feet. Hooper prods it with a stick. Coast and icebergs in background."
        }
      },
      "record_sha256": "de32c888afbd42e602492436aa121e3212805102a550d335ee0fab405d948f40"
    },
    {
      "id": "history:artifact-d6e4cc091037",
      "legacy_id": "artifact-d6e4cc091037",
      "kind": "historical",
      "title": "The Terra Nova held up for the first time (this expedition) in the ice. Dec. 11th 1910",
      "url": "vault.html#artifact-d6e4cc091037",
      "summary": "Cataloged expedition photograph: View of ship ‘Terra Nova’, some sails set, over pack ice.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:acad184adbcb8086ce5b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "11.12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d6e4cc091037",
        "input_record_sha256": "5f8da7fb8fabf252416bf034d86b6c9007fd110450c14065412e2a35aaf46d38",
        "original_fields": {
          "id": "artifact-d6e4cc091037",
          "artifact_id": "P2005/5/15",
          "title": "The Terra Nova held up for the first time (this expedition) in the ice. Dec. 11th 1910",
          "date": "11.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-15",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-15",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-15",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: View of ship ‘Terra Nova’, some sails set, over pack ice.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View of ship ‘Terra Nova’, some sails set, over pack ice."
        }
      },
      "record_sha256": "f26452cdaa1b9db579a2e4ef8dcd65e9eb634addfe1e35dfcc3be944a1f04c33"
    },
    {
      "id": "history:artifact-d748e0b31a78",
      "legacy_id": "artifact-d748e0b31a78",
      "kind": "historical",
      "title": "Antarctica 1956–1960",
      "url": "vault.html#artifact-d748e0b31a78",
      "summary": "Soviet overview map issued at 1:20,000,000.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e76a997032275eefd32b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1960",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d748e0b31a78",
        "input_record_sha256": "a9a21f9673f804cf31a79b0abd028365e5fce7b1cde64ca48fe216f663e0e1ff",
        "original_fields": {
          "id": "artifact-d748e0b31a78",
          "title": "Antarctica 1956–1960",
          "date": "1960",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2673",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Soviet overview map issued at 1:20,000,000.",
          "identifier": "AADC map 2673",
          "creator": "USSR",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 2673",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-d748e0b31a78",
            "title": "Antarctica 1956–1960",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2673",
            "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2673",
            "direct_image_url": "https://data.aad.gov.au/database/mapcat/russian/2673_thumb.jpg",
            "visual_status": "primary-image-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Soviet overview map issued at 1:20,000,000."
        }
      },
      "record_sha256": "efae5645488e6644e0e877d8b91576d8dbf30ce42e05cf01e43a914a2eb2f4e8"
    },
    {
      "id": "history:artifact-d986922b6d9f",
      "legacy_id": "artifact-d986922b6d9f",
      "kind": "historical",
      "title": "Antarctic Magnetic Survey: Declination",
      "url": "vault.html#artifact-d986922b6d9f",
      "summary": "Magnetic survey, not geographic-pole map.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1869; epoch 1840–1845",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-d986922b6d9f",
        "input_record_sha256": "c68ed9083ef71f77529e59a570d55c4d40dfe057d4f6da1cf7bad055bf3c05c5",
        "original_fields": {
          "title": "Antarctic Magnetic Survey: Declination",
          "date": "1869; epoch 1840–1845",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Magnetic survey, not geographic-pole map.",
          "identifier": "L.R.292",
          "id": "artifact-d986922b6d9f",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "L.R.292",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-d986922b6d9f",
            "title": "Antarctic Magnetic Survey: Declination",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/2cb203cde57688c06020c171743cf31eed9a7354-400x414.jpg/antarctic-magnetic-survey,-epoch-1840-1845,-declination,-in-philosophical-transactions-of-the-royal-society,-1869,-vol-158-part-2.-bl-l.r.292..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Magnetic survey, not geographic-pole map."
        }
      },
      "record_sha256": "8abc7f15c80d14add67d0a9178c1de55e11ebdab6732c1335b8306db70e329ba"
    },
    {
      "id": "history:artifact-da77dc60891f",
      "legacy_id": "artifact-da77dc60891f",
      "kind": "historical",
      "title": "Captain Scott and the Southern Party. Mount Erebus in Background. January 26th 1911",
      "url": "vault.html#artifact-da77dc60891f",
      "summary": "Cataloged expedition photograph: Scott and other members of the expedition stand by fully loaded sledges on a flat snow field. They wear full trekking gear. Mount Erebus in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c90ee4c79c04399f468a",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "26.1.1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-da77dc60891f",
        "input_record_sha256": "28cde5249975721a72af32b24af47d26e9b2271a36eddb1aed07b1a4b7d449c9",
        "original_fields": {
          "id": "artifact-da77dc60891f",
          "artifact_id": "P2005/5/214",
          "title": "Captain Scott and the Southern Party. Mount Erebus in Background. January 26th 1911",
          "date": "26.1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-214",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-214",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-214",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Scott and other members of the expedition stand by fully loaded sledges on a flat snow field. They wear full trekking gear. Mount Erebus in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Scott and other members of the expedition stand by fully loaded sledges on a flat snow field. They wear full trekking gear. Mount Erebus in background."
        }
      },
      "record_sha256": "6fcab6691c0e0348c1c837a0ef0719f7a6c4764908deee179d09b06a1f284a40"
    },
    {
      "id": "history:artifact-db28c308407f",
      "legacy_id": "artifact-db28c308407f",
      "kind": "historical",
      "title": "Hydrometer — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-db28c308407f",
      "summary": "Individually cataloged hydrometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4231.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:db28c308407f32f000df",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-db28c308407f",
        "input_record_sha256": "105fa583c9e6a0baaa1e60e648ea8fb55cf03a11826c2c9bc7b3498848eab66c",
        "original_fields": {
          "id": "artifact-db28c308407f",
          "title": "Hydrometer — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3986",
          "accession": "AAA4231",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged hydrometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4231.",
          "visual_url": "https://collections.rmg.co.uk/media/1/134/610/rt5320.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3986",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Hydrometer",
          "notes": "",
          "artifact_id": "AAA4231",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/1/134/610/rt5320.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged hydrometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4231."
        }
      },
      "record_sha256": "4879bbd2d8c597e14b96183999f96d126e2952155a780cad0658b43fddf468f6"
    },
    {
      "id": "history:artifact-dbeaa6676561",
      "legacy_id": "artifact-dbeaa6676561",
      "kind": "historical",
      "title": "J.I. Moore with sledge and team on sea ice in Square Bay in front of 60ft berg, 14 December 1936",
      "url": "vault.html#artifact-dbeaa6676561",
      "summary": "Cataloged expedition photograph: Moore sits on a sledge on a flat ice field. Harnessed sled dogs lie on the ice in front, cliffs of iceberg behind.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6546a4913c7741f8cf2d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-dbeaa6676561",
        "input_record_sha256": "d91aeb64e7eeac6c2e667fb34db170b6a1a560bfae5f69f2a82f6436077a791b",
        "original_fields": {
          "id": "artifact-dbeaa6676561",
          "artifact_id": "P51/8/F610",
          "title": "J.I. Moore with sledge and team on sea ice in Square Bay in front of 60ft berg, 14 December 1936",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f610",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f610",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f610",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore sits on a sledge on a flat ice field. Harnessed sled dogs lie on the ice in front, cliffs of iceberg behind.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore sits on a sledge on a flat ice field. Harnessed sled dogs lie on the ice in front, cliffs of iceberg behind."
        }
      },
      "record_sha256": "69762e7c049dbe61af60574dd28cc692d34b0fb6953cb28238485d89efb63292"
    },
    {
      "id": "history:artifact-dbedf461caf3",
      "legacy_id": "artifact-dbedf461caf3",
      "kind": "historical",
      "title": "Daily Telegraph Map of Antarctica",
      "url": "vault.html#artifact-dbedf461caf3",
      "summary": "Territorial sectors and expedition plans.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1957",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-dbedf461caf3",
        "input_record_sha256": "5d931190153266b277bf43db71a2d69e909bc2d4904d90b1f5fd06fe8830e766",
        "original_fields": {
          "title": "Daily Telegraph Map of Antarctica",
          "date": "1957",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Territorial sectors and expedition plans.",
          "identifier": "Maps 88710.(57.)",
          "id": "artifact-dbedf461caf3",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 88710.(57.)",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-dbedf461caf3",
            "title": "Daily Telegraph Map of Antarctica",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/807a6fc05056255decc035e653ba02899d664137-260x400.jpg/the-daily-telegraph-map-of-antarctica,-[1957].-bl-maps-88710.(57.).jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Territorial sectors and expedition plans."
        }
      },
      "record_sha256": "cb213218f2c13cac5ee4b435839fbd7ec980023a4d7d9b4085ff5e567589f283"
    },
    {
      "id": "history:artifact-dd9b55f82086",
      "legacy_id": "artifact-dd9b55f82086",
      "kind": "historical",
      "title": "J.I. Moore with tractor unloading",
      "url": "vault.html#artifact-dd9b55f82086",
      "summary": "Cataloged expedition photograph: Moore stands on the deck of the sailing ship ‘Penola’. He pulls a small tractor which hangs by cables above the deck from a block and tackle.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:06661f7e5516c5d29ed4",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-dd9b55f82086",
        "input_record_sha256": "a269957bc21aa9e24779a0eaa9aedd719cab2fe3c28195201014cad0147a4149",
        "original_fields": {
          "id": "artifact-dd9b55f82086",
          "artifact_id": "P51/8/F318",
          "title": "J.I. Moore with tractor unloading",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f318",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f318",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f318",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore stands on the deck of the sailing ship ‘Penola’. He pulls a small tractor which hangs by cables above the deck from a block and tackle.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore stands on the deck of the sailing ship ‘Penola’. He pulls a small tractor which hangs by cables above the deck from a block and tackle."
        }
      },
      "record_sha256": "6c64bcc30e94c314e0a2cbedd0dd7b5954c251563abaacc8855cca4682e3bc24"
    },
    {
      "id": "history:artifact-ddbb4ac9d167",
      "legacy_id": "artifact-ddbb4ac9d167",
      "kind": "historical",
      "title": "Ortelius: Typus Orbis Terrarum",
      "url": "vault.html#artifact-ddbb4ac9d167",
      "summary": "The 1570 edition of Ortelius’s world map, distinct from the existing 1598 edition. Historical conjectural geography is not evidence of a surveyed Antarctic civilization.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ddbb4ac9d16753e0a2dd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/ortelius-1570-thumb.jpg",
          "caption": "David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries; courtesy of www.davidrumsey.com. Ortelius, Typus Orbis Terrarum, 1570 first-edition atlas map. Terra Australis is conjectural geography, not a measured Antarctic coastline. Proportionally resized; no reconstruction. Source & reuse ↗",
          "title": "Ortelius: Typus Orbis Terrarum",
          "href": "vault.html#artifact-ddbb4ac9d167"
        },
        "reuse_notice": "Express site permission allows reproductions in digital publications by for-profit and nonprofit publishers without charge, with credit. Item includes Download 1 link; original is pre-1930. Linked general CC license is BY-NC-SA 3.0, NOT CC BY 4.0. No standalone facsimile sale authorized.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1570",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ddbb4ac9d167",
        "input_record_sha256": "3440395a82123ee120049038203fda70868bead3b9121befe68a16bb60b0ce0c",
        "original_fields": {
          "id": "artifact-ddbb4ac9d167",
          "reference_id": "h-ortelius",
          "title": "Ortelius: Typus Orbis Terrarum",
          "date": "1570",
          "institution": "David Rumsey Map Collection, Stanford University Libraries",
          "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~275224~90048541:-1--Typus-Orbis-Terrarum-",
          "accession": "Rumsey10000.011",
          "categories": [
            "historical-map",
            "world-map"
          ],
          "description": "The 1570 edition of Ortelius’s world map, distinct from the existing 1598 edition. Historical conjectural geography is not evidence of a surveyed Antarctic civilization.",
          "rights": "Current Rumsey terms permit attributed publication subject to conditions; this entry remains source-link only.",
          "embed_allowed": false,
          "official_viewer_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~275224~90048541:-1--Typus-Orbis-Terrarum-",
          "direct_image_url": null,
          "edition_note": "Edition-specific1570 record; do not substitute a later edition image.",
          "provenance": "Lead in user-supplied Claude HIST array; metadata independently checked against primary repositories during prior primary-source audit in this research thread; do not import supplied claims or rights wholesale.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "display_image": {
            "src": "thumbs/ortelius-1570-thumb.jpg",
            "width": 1000,
            "height": 705,
            "credit": "David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries; courtesy of www.davidrumsey.com.",
            "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~275224~90048541:-1--Typus-Orbis-Terrarum-",
            "rights": "Express site permission allows reproductions in digital publications by for-profit and nonprofit publishers without charge, with credit. Item includes Download 1 link; original is pre-1930. Linked general CC license is BY-NC-SA 3.0, NOT CC BY 4.0. No standalone facsimile sale authorized.",
            "transform": "Proportional resize only; no content synthesized or reconstructed."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "The 1570 edition of Ortelius’s world map, distinct from the existing 1598 edition. Historical conjectural geography is not evidence of a surveyed Antarctic civilization."
        }
      },
      "record_sha256": "55bccd31421dba436ed3f48eceab8461cc85cfadc69c9955d317b4b74e9ddc1d"
    },
    {
      "id": "history:artifact-dde28ed109ff",
      "legacy_id": "artifact-dde28ed109ff",
      "kind": "historical",
      "title": "MacMurchie first Scotia diary",
      "url": "vault.html#artifact-dde28ed109ff",
      "summary": "First of the museum’s two handwritten expedition diaries.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8c70a2f1d82f5fc46a36",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-dde28ed109ff",
        "input_record_sha256": "f4424e8b8c048517c9b8f0991f10f1044827b76adfde8aee1646ee0984286043",
        "original_fields": {
          "title": "MacMurchie first Scotia diary",
          "date": "1902–1904",
          "institution": "Scottish Maritime Museum",
          "source_url": "https://www.scottishmaritimemuseum.org/collections/its-snowing-again-diaries-from-edwardian-antarctica/",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Scotia expedition"
          ],
          "description": "First of the museum’s two handwritten expedition diaries.",
          "notes": "Source distinguishes first and second diaries; precise volume date range pending.",
          "id": "artifact-dde28ed109ff",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "First of the museum’s two handwritten expedition diaries."
        }
      },
      "record_sha256": "cccded4a654f442fe366fc695504d26bc9dbfcde41951e8fc4dd6b10459f594a"
    },
    {
      "id": "history:artifact-de56949d5852",
      "legacy_id": "artifact-de56949d5852",
      "kind": "historical",
      "title": "Herbert Ponting on Terra Nova",
      "url": "vault.html#artifact-de56949d5852",
      "summary": "Cataloged expedition photograph: Ponting sits on a capstan on the deck of ship ‘Terra Nova’.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:afb8fc99e3ce3c611e18",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-de56949d5852",
        "input_record_sha256": "398ce9ce28729519a43bb1478e1f705ec1256b57000ebc0b636046a52c512ca0",
        "original_fields": {
          "id": "artifact-de56949d5852",
          "artifact_id": "P2005/5/1151",
          "title": "Herbert Ponting on Terra Nova",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1151",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1151",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1151",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Ponting sits on a capstan on the deck of ship ‘Terra Nova’.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Ponting sits on a capstan on the deck of ship ‘Terra Nova’."
        }
      },
      "record_sha256": "9f8dc0d93c73917f7605e165a93dfa47f514a51e8989513e381ff5613f012c6f"
    },
    {
      "id": "history:artifact-de918cdd60f9",
      "legacy_id": "artifact-de918cdd60f9",
      "kind": "historical",
      "title": "V.D. Carse on catcher",
      "url": "vault.html#artifact-de918cdd60f9",
      "summary": "Cataloged expedition photograph: Carse stands on the deck of a steam ship.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4ed05b3da261dbdbe4b7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-de918cdd60f9",
        "input_record_sha256": "2f95de660c50a7bce0a80d920db4577bb52fe69aa9011ea47c3ff5be257e363e",
        "original_fields": {
          "id": "artifact-de918cdd60f9",
          "artifact_id": "P51/8/G051",
          "title": "V.D. Carse on catcher",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Gurney, Norman Arthur",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g051",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g051",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g051",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Carse stands on the deck of a steam ship.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Carse stands on the deck of a steam ship."
        }
      },
      "record_sha256": "9108fcd4429f9cfe3dd0f38bddebf175698bccf578b5274cc52678b993938296"
    },
    {
      "id": "history:artifact-df54877cf785",
      "legacy_id": "artifact-df54877cf785",
      "kind": "historical",
      "title": "N.A. Gurney and J.I. Moore with Chief (dog)",
      "url": "vault.html#artifact-df54877cf785",
      "summary": "Cataloged expedition photograph: Portrait of Gurney, holding a dog, and Moore on the deck of the sailing ship ‘Penola’.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:93f73d6b60923290f8c5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-df54877cf785",
        "input_record_sha256": "0663c277d81599f2e1dbdb7bc1d6af97622b81c1741e0bcd85933bad6fe4cd69",
        "original_fields": {
          "id": "artifact-df54877cf785",
          "artifact_id": "P51/8/R012",
          "title": "N.A. Gurney and J.I. Moore with Chief (dog)",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Martin, James Hamilton",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r012",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r012",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r012",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Portrait of Gurney, holding a dog, and Moore on the deck of the sailing ship ‘Penola’.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Portrait of Gurney, holding a dog, and Moore on the deck of the sailing ship ‘Penola’."
        }
      },
      "record_sha256": "0f06cb3cbce96afd827dce9b1b5f30bfa697a56eb8f7b4ceb6ce755a5aa41b43"
    },
    {
      "id": "history:artifact-dfc1f098967f",
      "legacy_id": "artifact-dfc1f098967f",
      "kind": "historical",
      "title": "Coelifer Atlas, Cosmographical Glasse",
      "url": "vault.html#artifact-dfc1f098967f",
      "summary": "Celestial spheres are not flat-Earth evidence.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:51d0996d4b3dd8abd3f3",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1559",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-dfc1f098967f",
        "input_record_sha256": "feaa59bcba3d0711c5430d99d92783ae5b85e954dd9b2d520a55465c81a240bf",
        "original_fields": {
          "id": "artifact-dfc1f098967f",
          "title": "Coelifer Atlas, Cosmographical Glasse",
          "creator": "William Cuningham",
          "date": "1559",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj71.1",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/wt0071_1s.jpg",
          "classification": "Geocentric armillary diagram",
          "relevance_and_caution": "Celestial spheres are not flat-Earth evidence.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Celestial spheres are not flat-Earth evidence.",
          "categories": [
            "Geocentric armillary diagram"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-dfc1f098967f",
            "title": "Coelifer Atlas, Cosmographical Glasse",
            "official_source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj71.1",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj71.1",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/wt0071_1s.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Celestial spheres are not flat-Earth evidence."
        }
      },
      "record_sha256": "ccffc7216674f769851dde81866fefa534a6290c7614b499be16a76f9d64546c"
    },
    {
      "id": "history:artifact-dfd9c71561ff",
      "legacy_id": "artifact-dfd9c71561ff",
      "kind": "historical",
      "title": "Berg in pack. Debenham and Taylor in the ice. Dec. 20th 1910",
      "url": "vault.html#artifact-dfd9c71561ff",
      "summary": "Cataloged expedition photograph: Debenham and Taylor stand on pack ice on skis. Large iceberg in background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aaa3c9beb8bfec98ebe4",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "20.12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-dfd9c71561ff",
        "input_record_sha256": "58cd257a54b1bd79825c4fc79bea6a0bae434d8b74191954ea75421df6d040a6",
        "original_fields": {
          "id": "artifact-dfd9c71561ff",
          "artifact_id": "P2005/5/41",
          "title": "Berg in pack. Debenham and Taylor in the ice. Dec. 20th 1910",
          "date": "20.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-41",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-41",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-41",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Debenham and Taylor stand on pack ice on skis. Large iceberg in background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Debenham and Taylor stand on pack ice on skis. Large iceberg in background."
        }
      },
      "record_sha256": "663dc05808dc95bf859c154ab261e7faaa2cfe5dcca15670db3055b47f3ea149"
    },
    {
      "id": "history:artifact-e03527460564",
      "legacy_id": "artifact-e03527460564",
      "kind": "historical",
      "title": "Simonstown, South Africa. Mrs Jeffrey on quay, beside ‘Quest’",
      "url": "vault.html#artifact-e03527460564",
      "summary": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. Mrs Jeffrey, smartly dressed, stands on the quay in front of the boat. Warehouse stand behind, settlement under a mountain in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d88ca8336000292afe77",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e03527460564",
        "input_record_sha256": "ecc7847c0c4b4660c9171fac0b9fa3f504ec103e075aeb4b55e00526f874dcf7",
        "original_fields": {
          "id": "artifact-e03527460564",
          "artifact_id": "P2002/28/352",
          "title": "Simonstown, South Africa. Mrs Jeffrey on quay, beside ‘Quest’",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Not identified in consulted record",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-352",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-352",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-352",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "Shackleton-Rowett Antarctic Expedition 1921-22",
            "Shackleton–Rowett expedition"
          ],
          "description": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. Mrs Jeffrey, smartly dressed, stands on the quay in front of the boat. Warehouse stand behind, settlement under a mountain in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. Mrs Jeffrey, smartly dressed, stands on the quay in front of the boat. Warehouse stand behind, settlement under a mountain in the background."
        }
      },
      "record_sha256": "4c5ea9ab6af0e8665d9b349e76dd6e9021f9c7478888564d7597fdc1ef3c61ad"
    },
    {
      "id": "history:artifact-e0a0e3b6463c",
      "legacy_id": "artifact-e0a0e3b6463c",
      "kind": "historical",
      "title": "Carte Generale Bathymetrique Des Oceans. Map showing the track of the S.Y. Aurora",
      "url": "vault.html#artifact-e0a0e3b6463c",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 3, 70cm x 105 cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e0a0e3b6463c",
        "input_record_sha256": "6108900dc8c3016ad6758ed3d0a94c6a2a19045d687961456d499b21ef96d4aa",
        "original_fields": {
          "id": "artifact-e0a0e3b6463c",
          "artifact_id": "SLNSW AAE map 3",
          "accession": "Australasian Antarctic Expedition records, map 3",
          "title": "Carte Generale Bathymetrique Des Oceans. Map showing the track of the S.Y. Aurora",
          "date": "1911-1913",
          "creator": "Davis, John King.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 3, 70cm x 105 cm.",
          "visual_url": "http://acms.sl.nsw.gov.au/album/albumView.aspx?itemID=949927&acmsid=0",
          "official_viewer_url": "http://acms.sl.nsw.gov.au/album/albumView.aspx?itemID=949927&acmsid=0",
          "embed_allowed": false,
          "verification_status": "Inventory item verified; linked legacy scan delivery unverified.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "primary-viewer-link-delivery-unverified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; linked legacy scan delivery unverified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 3, 70cm x 105 cm."
        }
      },
      "record_sha256": "bd46543d0f7091aba18e04dabf68768dce25f4cd5acc6b93b69d5e572bb4af62"
    },
    {
      "id": "history:artifact-e161e71a210d",
      "legacy_id": "artifact-e161e71a210d",
      "kind": "historical",
      "title": "Oasis, Sheet 3",
      "url": "vault.html#artifact-e161e71a210d",
      "summary": "Soviet topographic mapping of an Antarctic ice-free coastal region.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b6a5df5285b03d9dcea3",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1956",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e161e71a210d",
        "input_record_sha256": "fbcc9792067756d96d8a6e85a7bc9c2d01032fb5b6980aa2b7c55a143a1387f2",
        "original_fields": {
          "id": "artifact-e161e71a210d",
          "title": "Oasis, Sheet 3",
          "date": "1956",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2995",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Soviet topographic mapping of an Antarctic ice-free coastal region.",
          "identifier": "AADC map 2995",
          "creator": "Ministry of Merchant Fleet of the USSR",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 2995",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Soviet topographic mapping of an Antarctic ice-free coastal region."
        }
      },
      "record_sha256": "a8618a80816896eeaee0143abcf8f328663b194272c576b4ab1cb9a61dfc7aaf"
    },
    {
      "id": "history:artifact-e1f3d1028b3c",
      "legacy_id": "artifact-e1f3d1028b3c",
      "kind": "historical",
      "title": "Macquarie Island Hut plan and map, 1911 - c 1913",
      "url": "vault.html#artifact-e1f3d1028b3c",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 11, 41cm x 74cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e1f3d1028b3c",
        "input_record_sha256": "1183edb275a5e4aec7f258814b86039ac4932ccd2cd21b1e0f70bf25d5a0b18b",
        "original_fields": {
          "id": "artifact-e1f3d1028b3c",
          "artifact_id": "SLNSW AAE map 11",
          "accession": "Australasian Antarctic Expedition records, map 11",
          "title": "Macquarie Island Hut plan and map, 1911 - c 1913",
          "date": "1911-1913",
          "creator": "Hodgeman, Alfred James. Blake, Leslie Russell.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "manuscript-plan",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 11, 41cm x 74cm.",
          "visual_url": "http://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3763574",
          "official_viewer_url": "http://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3763574",
          "embed_allowed": false,
          "verification_status": "Inventory item verified; linked legacy scan delivery unverified.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "primary-viewer-link-delivery-unverified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; linked legacy scan delivery unverified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 11, 41cm x 74cm."
        }
      },
      "record_sha256": "0bf31a85b9db2df87c1da2146f02d4abc37dced40de5d0a93030d55627707ad4"
    },
    {
      "id": "history:artifact-e3ac8b84b0c7",
      "legacy_id": "artifact-e3ac8b84b0c7",
      "kind": "historical",
      "title": "The Antarctic Regions",
      "url": "vault.html#artifact-e3ac8b84b0c7",
      "summary": "Stanford regional map.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1921",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e3ac8b84b0c7",
        "input_record_sha256": "bbdf3f9a0e6daf3fe0d7b25ad8960a7664cf4a43709451044cff113550224960",
        "original_fields": {
          "title": "The Antarctic Regions",
          "date": "circa 1921",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Stanford regional map.",
          "identifier": "Maps 88710.(13.)",
          "id": "artifact-e3ac8b84b0c7",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 88710.(13.)",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-e3ac8b84b0c7",
            "title": "The Antarctic Regions",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/859fadd9d2fe9102f8446ccc91b364718c8b5b7b-420x400.jpg/the-antarctic-regions,-[1921].-bl-maps-88710.(13.).jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Stanford regional map."
        }
      },
      "record_sha256": "8645dabb4ce3eb78c408b25dd7b6a9b095cf2aeacaecec472d855f938b312516"
    },
    {
      "id": "history:artifact-e3bea593cc1b",
      "legacy_id": "artifact-e3bea593cc1b",
      "kind": "historical",
      "title": "Recent Work of Norwegian Expeditions in the Antarctic Regions to illustrate a paper by Prof. Olaf Holtedahl",
      "url": "vault.html#artifact-e3bea593cc1b",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 30 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6c9bb4f28b8058be9627",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "November-1931",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e3bea593cc1b",
        "input_record_sha256": "ed8d96000e5a628386d52b57268a4ff6a9d0a42946b3ffb3b80987e1ff3cc665",
        "original_fields": {
          "id": "artifact-e3bea593cc1b",
          "artifact_id": "AADC map 3703",
          "accession": "AADC map 3703",
          "title": "Recent Work of Norwegian Expeditions in the Antarctic Regions to illustrate a paper by Prof. Olaf Holtedahl",
          "date": "November-1931",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3703",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 30 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 30 500 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 30 500 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "5dfa1e39583590e8e58f4ef60fc551df41ccc7ca9d2f68cd7d6b50887173ad84"
    },
    {
      "id": "history:artifact-e418821f6c41",
      "legacy_id": "artifact-e418821f6c41",
      "kind": "historical",
      "title": "South Shetland Islands: Surveys of RRS Discovery II 1935",
      "url": "vault.html#artifact-e418821f6c41",
      "summary": "Survey corrections are marked on a chart derived from Admiralty chart3205.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:04b0cfe077cd05ceb001",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e418821f6c41",
        "input_record_sha256": "b87a650e17553e60e27833f010fb5566724d1f0fdef2f4f64c3b27696f544304",
        "original_fields": {
          "id": "artifact-e418821f6c41",
          "title": "South Shetland Islands: Surveys of RRS Discovery II 1935",
          "date": "1936",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3708",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Survey corrections are marked on a chart derived from Admiralty chart3205.",
          "identifier": "AADC map 3708",
          "creator": "Royal Geographical Society",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 3708",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Survey corrections are marked on a chart derived from Admiralty chart3205."
        }
      },
      "record_sha256": "4c2e286c965b75ae510af18a0e0f41cbca34f58a2642bcb375c0f563d3f84985"
    },
    {
      "id": "history:artifact-e51e19171aef",
      "legacy_id": "artifact-e51e19171aef",
      "kind": "historical",
      "title": "No 1844 — Ross Antarctic expedition",
      "url": "vault.html#artifact-e51e19171aef",
      "summary": "Individually cataloged watch associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession JEW0221.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e51e19171aef2756b1a9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1829-1830",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e51e19171aef",
        "input_record_sha256": "14cde9c478dcd74b20792a07faa318dae915edd40d238ea0a1264eb18a92924c",
        "original_fields": {
          "id": "artifact-e51e19171aef",
          "title": "No 1844 — Ross Antarctic expedition",
          "date": "1829-1830",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-36372",
          "accession": "JEW0221",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Ross Antarctic expedition"
          ],
          "description": "Individually cataloged watch associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession JEW0221.",
          "visual_url": "https://collections.rmg.co.uk/media/3/371/915/s0524_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-36372",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "No 1844",
          "notes": "",
          "artifact_id": "JEW0221",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/371/915/s0524_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged watch associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession JEW0221."
        }
      },
      "record_sha256": "72da74d14e407b28ac6f10a76aba7b071f1eaef64f6e2defdc281c1ad257da6e"
    },
    {
      "id": "history:artifact-e5558cd1260c",
      "legacy_id": "artifact-e5558cd1260c",
      "kind": "historical",
      "title": "Lieut Evans commanding Terra Nova from crow’s nest. December 28th 1910",
      "url": "vault.html#artifact-e5558cd1260c",
      "summary": "Cataloged expedition photograph: View from the deck of ship ‘Terra Nova’ of Evans in the crows nest, waving his arm.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bcc4d437059e68e5454b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "28.12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e5558cd1260c",
        "input_record_sha256": "5027bcd99a3aceced5785daeb0778456c0b780638fa85b6579d5cce054a97d49",
        "original_fields": {
          "id": "artifact-e5558cd1260c",
          "artifact_id": "P2005/5/51",
          "title": "Lieut Evans commanding Terra Nova from crow’s nest. December 28th 1910",
          "date": "28.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-51",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-51",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-51",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: View from the deck of ship ‘Terra Nova’ of Evans in the crows nest, waving his arm.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: View from the deck of ship ‘Terra Nova’ of Evans in the crows nest, waving his arm."
        }
      },
      "record_sha256": "e36081f5f539044fc8570638a5006743400b74c0cf9bdddbcf2449c6ab0c6f2d"
    },
    {
      "id": "history:artifact-e5ecd08f9e21",
      "legacy_id": "artifact-e5ecd08f9e21",
      "kind": "historical",
      "title": "Scott final sledging diary",
      "url": "vault.html#artifact-e5ecd08f9e21",
      "summary": "Scott’s final sledging diary volume, Add MS 51035, dated 18 February–29 March 1912. This exact volume is part of the larger diaries series, not an additional duplicate artifact.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4edf82a8ba07a45d79b1",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Catalog text license does not establish manuscript-image reuse rights. Source link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "18 February–29 March 1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e5ecd08f9e21",
        "input_record_sha256": "811c797e63a2ad1161611cc2fb249d409a7215e3531e800cb398f3e8c69a425c",
        "original_fields": {
          "title": "Scott final sledging diary",
          "date": "18 February–29 March 1912",
          "institution": "British Library",
          "source_url": "https://searcharchives.bl.uk/catalog/040-001958854",
          "rights": "Catalog text license does not establish manuscript-image reuse rights. Source link only.",
          "categories": [
            "manuscript",
            "Terra Nova expedition"
          ],
          "description": "Scott’s final sledging diary volume, Add MS 51035, dated 18 February–29 March 1912. This exact volume is part of the larger diaries series, not an additional duplicate artifact.",
          "artifact_id": "Add MS 51035",
          "notes": "One specified volume, not the entire twelve-volume series.",
          "id": "artifact-e5ecd08f9e21",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
          "series_source_url": "https://searcharchives.bl.uk/catalog/036-001958842",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Scott’s final sledging diary volume, Add MS 51035, dated 18 February–29 March 1912. This exact volume is part of the larger diaries series, not an additional duplicate artifact."
        }
      },
      "record_sha256": "bdb463405c640335603178c5e6ba710be5f0227fed0f9fd8c25253b23a262f31"
    },
    {
      "id": "history:artifact-e699b8916623",
      "legacy_id": "artifact-e699b8916623",
      "kind": "historical",
      "title": "Sledging Goggles — Terra Nova expedition",
      "url": "vault.html#artifact-e699b8916623",
      "summary": "Individually cataloged sledging goggles associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1612.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e699b8916623d650a4c0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e699b8916623",
        "input_record_sha256": "fb8ce74fb2ceb226a6efd35f4a6e594f2a4a2ed575571748935908f6611f13b9",
        "original_fields": {
          "id": "artifact-e699b8916623",
          "title": "Sledging Goggles — Terra Nova expedition",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212312",
          "accession": "ZBA1612",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged sledging goggles associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1612.",
          "visual_url": "https://collections.rmg.co.uk/media/3/437/174/s1569_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212312",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sledging Goggles",
          "notes": "",
          "artifact_id": "ZBA1612",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/437/174/s1569_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sledging goggles associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1612."
        }
      },
      "record_sha256": "5c26c50eaea8f490607476c5369636c4efa6946e5b940b5d1a6145545e1c8371"
    },
    {
      "id": "history:artifact-e782ed6063a1",
      "legacy_id": "artifact-e782ed6063a1",
      "kind": "historical",
      "title": "Ski wax — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-e782ed6063a1",
      "summary": "Individually cataloged ski wax associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4267.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e782ed6063a13ae83deb",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e782ed6063a1",
        "input_record_sha256": "fcdc48dd650c530d56c826e07e27d38854ffa869b0cb85d5e013f9be2a93c485",
        "original_fields": {
          "id": "artifact-e782ed6063a1",
          "title": "Ski wax — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4022",
          "accession": "AAA4267",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged ski wax associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4267.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Ski wax",
          "notes": "",
          "artifact_id": "AAA4267",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged ski wax associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4267."
        }
      },
      "record_sha256": "0f76b546352907fe28ad8833d039caa4b8d38c5ec213d6632ad8c1f680835cc2"
    },
    {
      "id": "history:artifact-e8661a553bdb",
      "legacy_id": "artifact-e8661a553bdb",
      "kind": "historical",
      "title": "J.I. Moore (portrait)",
      "url": "vault.html#artifact-e8661a553bdb",
      "summary": "Cataloged expedition photograph: Portrait of Moore.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:021db2e2962a13f0bc4f",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e8661a553bdb",
        "input_record_sha256": "0e4e141577868faeabc6a59d50b736e675059a84975e1af0467af669d91dd141",
        "original_fields": {
          "id": "artifact-e8661a553bdb",
          "artifact_id": "P51/8/F189",
          "title": "J.I. Moore (portrait)",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f189",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f189",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f189",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Portrait of Moore.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Portrait of Moore."
        }
      },
      "record_sha256": "68a2817cb3976ef889da94eb4f75daed2e13226305f2fdb9e7a883e0defd80e4"
    },
    {
      "id": "history:artifact-e880b2641df3",
      "legacy_id": "artifact-e880b2641df3",
      "kind": "historical",
      "title": "Reindeer sleeping bag used by Surgeon Commander George Murray Levick (1877-1956) on the British Antarctic Expedition 1910-14",
      "url": "vault.html#artifact-e880b2641df3",
      "summary": "Individually cataloged sleeping bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4213.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e880b2641df33198962d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e880b2641df3",
        "input_record_sha256": "258ce9f8b49e3b4ce3c2aebdd5804aabee115803f98e25c16a0abd216ae2f0ff",
        "original_fields": {
          "id": "artifact-e880b2641df3",
          "title": "Reindeer sleeping bag used by Surgeon Commander George Murray Levick (1877-1956) on the British Antarctic Expedition 1910-14",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3968",
          "accession": "AAA4213",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged sleeping bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4213.",
          "visual_url": "https://collections.rmg.co.uk/media/325/938/d5225.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3968",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Reindeer sleeping bag used by Surgeon Commander George Murray Levick (1877-1956) on the British Antarctic Expedition 1910-14",
          "notes": "",
          "artifact_id": "AAA4213",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/325/938/d5225.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sleeping bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4213."
        }
      },
      "record_sha256": "b7f21e1c45d12e743e396c0b2f411f226f4402f1887abdd78c08c47e3d04e2ad"
    },
    {
      "id": "history:artifact-e8a26a9c5a0e",
      "legacy_id": "artifact-e8a26a9c5a0e",
      "kind": "historical",
      "title": "Midwinter Day at Cape Adare, 1911",
      "url": "vault.html#artifact-e8a26a9c5a0e",
      "summary": "Cataloged expedition photograph: Six members of the northern party sit around a table in the Cape Adare hut. Bottles and mugs stand on the table, flags hang from the ceiling above the table.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:70feb222582de339fff6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e8a26a9c5a0e",
        "input_record_sha256": "2337a9e765cfc7faebb5a2f90a4135f97a860c39c01009b880ac5490c7046d66",
        "original_fields": {
          "id": "artifact-e8a26a9c5a0e",
          "artifact_id": "P48/14/15",
          "title": "Midwinter Day at Cape Adare, 1911",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Levick, George Murray",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-15",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-15",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-15",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Levick Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Six members of the northern party sit around a table in the Cape Adare hut. Bottles and mugs stand on the table, flags hang from the ceiling above the table.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Six members of the northern party sit around a table in the Cape Adare hut. Bottles and mugs stand on the table, flags hang from the ceiling above the table."
        }
      },
      "record_sha256": "784f6ade9ed4caaff2c52e30ad2ecb7fd6802b8ef3425dc7afd6accd48b11cce"
    },
    {
      "id": "history:artifact-e99a4ac0ed51",
      "legacy_id": "artifact-e99a4ac0ed51",
      "kind": "historical",
      "title": "The Changing Map of Alexander and Charcot Island (10 sketch maps on 1 sheet covering period 1821-1960)",
      "url": "vault.html#artifact-e99a4ac0ed51",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 7 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:89d1400b3f0bc471b04d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June 1963",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-e99a4ac0ed51",
        "input_record_sha256": "746624107038a87ba5a0d27e0e5af68b13f5773f259d34e9b457b336d264ae4e",
        "original_fields": {
          "id": "artifact-e99a4ac0ed51",
          "artifact_id": "AADC map 3718",
          "accession": "AADC map 3718",
          "title": "The Changing Map of Alexander and Charcot Island (10 sketch maps on 1 sheet covering period 1821-1960)",
          "date": "June 1963",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3718",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 7 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Changing_map_Alexander_Charcot_Is_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3718",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 7 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "25.5 x 35.3 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Changing_map_Alexander_Charcot_Is_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 7 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "98dbf26f14e46d880ae03b04e108c228f8bcd23d1b03b2539e289e145eadc8eb"
    },
    {
      "id": "history:artifact-ea40341aa7cd",
      "legacy_id": "artifact-ea40341aa7cd",
      "kind": "historical",
      "title": "Al-Idrisi world map, MS Pococke 375",
      "url": "vault.html#artifact-ea40341aa7cd",
      "summary": "Orientation is a cartographic convention, not inversion of the physical Earth.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e6453886ece2a6357a7c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Oxford Cabinet labels photograph CC BY-NC 4.0.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1553 copy of medieval work",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ea40341aa7cd",
        "input_record_sha256": "565d1205007412698490df11b8c119ad6ad6ce09aef7c6d91569911dadcc9a7c",
        "original_fields": {
          "id": "artifact-ea40341aa7cd",
          "title": "Al-Idrisi world map, MS Pococke 375",
          "creator": "Copyist after al-Idrisi",
          "date": "1553 copy of medieval work",
          "institution": "Bodleian Libraries",
          "source_url": "https://digital.bodleian.ox.ac.uk/objects/ced0d8bd-1019-4af2-9086-e411115f1507/",
          "supplemental_or_image_url": "https://www.cabinet.ox.ac.uk/node/9746",
          "classification": "South-up world map",
          "relevance_and_caution": "Orientation is a cartographic convention, not inversion of the physical Earth.",
          "rights": "Oxford Cabinet labels photograph CC BY-NC 4.0.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Orientation is a cartographic convention, not inversion of the physical Earth.",
          "categories": [
            "South-up world map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-ea40341aa7cd",
            "title": "Al-Idrisi world map, MS Pococke 375",
            "official_source_url": "https://digital.bodleian.ox.ac.uk/objects/ced0d8bd-1019-4af2-9086-e411115f1507/",
            "official_viewer_url": "https://digital.bodleian.ox.ac.uk/objects/ced0d8bd-1019-4af2-9086-e411115f1507/",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Oxford Cabinet labels photograph CC BY-NC 4.0.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Orientation is a cartographic convention, not inversion of the physical Earth."
        }
      },
      "record_sha256": "596296a7f0f92f566944341a4ee991983bb7f222d694f8b42187ec0893b13274"
    },
    {
      "id": "history:artifact-ea84a66152b9",
      "legacy_id": "artifact-ea84a66152b9",
      "kind": "historical",
      "title": "A pair of sealskin over shoes reputedly found on Captain R. F. Scott's body",
      "url": "vault.html#artifact-ea84a66152b9",
      "summary": "Individually cataloged over shoes associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4171.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ea84a66152b9b6ccffa6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ea84a66152b9",
        "input_record_sha256": "9864a6effaf0911a96856eb60710210c88b89be72fd0d836d1aa033a368320a0",
        "original_fields": {
          "id": "artifact-ea84a66152b9",
          "title": "A pair of sealskin over shoes reputedly found on Captain R. F. Scott's body",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3926",
          "accession": "AAA4171",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged over shoes associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4171.",
          "visual_url": "https://collections.rmg.co.uk/media/544/865/e1003.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3926",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "A pair of sealskin over shoes reputedly found on Captain R. F. Scott's body",
          "notes": "",
          "artifact_id": "AAA4171",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/544/865/e1003.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged over shoes associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4171."
        }
      },
      "record_sha256": "926a675ed1d76c406c072b55f647c2a1698d432e799a2145ff87b633abed1378"
    },
    {
      "id": "history:artifact-eeececa953e9",
      "legacy_id": "artifact-eeececa953e9",
      "kind": "historical",
      "title": "Traverses of Southern and Eastern Coastal Sledge Journeys. A.A.E.",
      "url": "vault.html#artifact-eeececa953e9",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 19, 67cm x 44cm. Adelie Land.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-eeececa953e9",
        "input_record_sha256": "fb74ef4cdd3dd3420b1104da7cb1f1b30415aa5e28ac1c6d6e7f5f635c2b3c99",
        "original_fields": {
          "id": "artifact-eeececa953e9",
          "artifact_id": "SLNSW AAE map 19",
          "accession": "Australasian Antarctic Expedition records, map 19",
          "title": "Traverses of Southern and Eastern Coastal Sledge Journeys. A.A.E.",
          "date": "1913",
          "creator": "Webb, Eric N.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 19, 67cm x 44cm. Adelie Land.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 19, 67cm x 44cm. Adelie Land."
        }
      },
      "record_sha256": "53cba9dd08f0a495149ac7ee1807cbca138bd827c37d088d4ab2ef06bc62984f"
    },
    {
      "id": "history:artifact-f007a309c772",
      "legacy_id": "artifact-f007a309c772",
      "kind": "historical",
      "title": "Southern Journey Party",
      "url": "vault.html#artifact-f007a309c772",
      "summary": "Nimrod southern-route survey sheet.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/southern-journey-1909-thumb.jpg",
          "caption": "Library of Congress, Geography and Map Division Route and Surveys of the Southern Journey Party, 1908-09 (1909), Royal Geographical Society; Library of Congress copy. Same Geographical Journal1909 published sheet as BL source; DIFFERENT physical copy, LOC stamp retained. Not a scan of the BL-held exemplar. Source & reuse ↗",
          "title": "Southern Journey Party",
          "href": "vault.html#artifact-f007a309c772"
        },
        "reuse_notice": "LOC item Rights & Access: Geography and Map digitized collections free to use and reuse unless Rights Advisory indicates otherwise; no contrary advisory shown.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1909",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f007a309c772",
        "input_record_sha256": "3d4574f21b68012e6145667263759c484eb428af7ac1d7fdc75076b3e0026040",
        "original_fields": {
          "title": "Southern Journey Party",
          "date": "1909",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Nimrod southern-route survey sheet.",
          "identifier": "Maps 159",
          "id": "artifact-f007a309c772",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 159",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-f007a309c772",
            "title": "Southern Journey Party",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/19d94cb197774a701a3347254602f6b86ea810ff-565x400.jpg/bl-maps-159..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only. Two separate original sheets appear in the same side-by-side reproduction.",
            "image_region": "left map"
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/southern-journey-1909-thumb.jpg",
            "width": 773,
            "height": 1200,
            "credit": "Library of Congress, Geography and Map Division",
            "source_url": "https://www.loc.gov/item/2002624044/",
            "rights": "LOC item Rights & Access: Geography and Map digitized collections free to use and reuse unless Rights Advisory indicates otherwise; no contrary advisory shown.",
            "transform": "Aspect-preserving thumbnail resize; no reconstruction."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Nimrod southern-route survey sheet."
        }
      },
      "record_sha256": "919ed73985a4688a3d40f8f9b33c246ebda892164f672b349c1e6c948e952ba7"
    },
    {
      "id": "history:artifact-f15bee6ab1bf",
      "legacy_id": "artifact-f15bee6ab1bf",
      "kind": "historical",
      "title": "Wilkes expedition atlas",
      "url": "vault.html#artifact-f15bee6ab1bf",
      "summary": "Original expedition atlas includes an Antarctic continent chart.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a952297f0c0f5120e267",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-f15bee6ab1bf.gif",
          "caption": "Atlas title-page preview, not a survey sheet. Open the original atlas viewer.",
          "title": "Wilkes expedition atlas",
          "href": "vault.html#artifact-f15bee6ab1bf"
        },
        "reuse_notice": "LOC Geography and Map Division: free use/reuse absent contrary advisory.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1844",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f15bee6ab1bf",
        "input_record_sha256": "c0935835fa3a45495df304a00b4f2c67a1b61b8cc0e2ff91f64b27260971178e",
        "original_fields": {
          "title": "Wilkes expedition atlas",
          "date": "1844",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2010589747/",
          "rights": "LOC Geography and Map Division: free use/reuse absent contrary advisory.",
          "categories": [
            "atlas",
            "United States Exploring Expedition"
          ],
          "description": "Original expedition atlas includes an Antarctic continent chart.",
          "artifact_id": "LOC 2010589747",
          "notes": "Count atlas once; do not additionally count its Antarctic chart in this inventory.",
          "id": "artifact-f15bee6ab1bf",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "reuse-statement-verified",
          "visual_source": {
            "id": "artifact-f15bee6ab1bf",
            "title": "Wilkes expedition atlas",
            "official_source_url": "https://www.loc.gov/item/2010589747/",
            "official_viewer_url": "https://www.loc.gov/resource/g9230m.gct00224/?st=gallery",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/gmd/gmd9m/g9230m/g9230m/gct00224/ca000001.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Original expedition atlas includes an Antarctic continent chart."
        }
      },
      "record_sha256": "2e8a74453bd3416de8bade5cac19f8cf16c5413db688da2be4778af76ee59f52"
    },
    {
      "id": "history:artifact-f333e8357a82",
      "legacy_id": "artifact-f333e8357a82",
      "kind": "historical",
      "title": "South Polar Regions with the Antarctic Continent drawn to illustrate the probable topography as deduced from present available data by D. Mawson, D.Sc. B.E.",
      "url": "vault.html#artifact-f333e8357a82",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:3b755117b9b7a09d39e0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f333e8357a82",
        "input_record_sha256": "62c3fd48c180996432a7c523b431f185cd6d98233fb7b52aecf2063ee0eb4935",
        "original_fields": {
          "id": "artifact-f333e8357a82",
          "artifact_id": "AADC map 3692",
          "accession": "AADC map 3692",
          "title": "South Polar Regions with the Antarctic Continent drawn to illustrate the probable topography as deduced from present available data by D. Mawson, D.Sc. B.E.",
          "date": "1911",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3692",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 40 000 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "7941696b8616dbd4724725989d653bc4bce5dae66232925c8887ce3b3bbeaff8"
    },
    {
      "id": "history:artifact-f3ae75141822",
      "legacy_id": "artifact-f3ae75141822",
      "kind": "historical",
      "title": "Sketch of Danco Land, the Belgica Strait and Palmer Archipelago surveyed by Captain G. Lecointe. 1898",
      "url": "vault.html#artifact-f3ae75141822",
      "summary": "A separately catalogued expedition or regional map; scale Not Entered. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c9590405242621ccb795",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1901",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f3ae75141822",
        "input_record_sha256": "309933ebe7dfae5a8badf8c326a27a26a735a9a8c11072e847d5c64711a48780",
        "original_fields": {
          "id": "artifact-f3ae75141822",
          "artifact_id": "AADC map 3679",
          "accession": "AADC map 3679",
          "title": "Sketch of Danco Land, the Belgica Strait and Palmer Archipelago surveyed by Captain G. Lecointe. 1898",
          "date": "1901",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3679",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale Not Entered. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "Not Entered",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale Not Entered. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "ca520975b498f355953ad0cb7f7a2e6f365bc4c388dd009c9e2559dd22e36548"
    },
    {
      "id": "history:artifact-f41813ef2477",
      "legacy_id": "artifact-f41813ef2477",
      "kind": "historical",
      "title": "J.I. Moore on Beach 4. (27 ft.)",
      "url": "vault.html#artifact-f41813ef2477",
      "summary": "Cataloged expedition photograph: Moore stands on a gravel slope. Mountain behind.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:fc6e99b8085e0556830d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f41813ef2477",
        "input_record_sha256": "d17d992149eeaa01680913db38601da70d73fe15cc8608d812121b910066c7c2",
        "original_fields": {
          "id": "artifact-f41813ef2477",
          "artifact_id": "P51/8/F432",
          "title": "J.I. Moore on Beach 4. (27 ft.)",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f432",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f432",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f432",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore stands on a gravel slope. Mountain behind.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore stands on a gravel slope. Mountain behind."
        }
      },
      "record_sha256": "5f203d9e93f3171a98be1a2bd3cf9c62c69cd10952bf990b450b6fb594dc1ca8"
    },
    {
      "id": "history:artifact-f52885e87675",
      "legacy_id": "artifact-f52885e87675",
      "kind": "historical",
      "title": "South Magnetic Polar Party",
      "url": "vault.html#artifact-f52885e87675",
      "summary": "Separate Nimrod magnetic-pole survey sheet.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/magnetic-party-1909-thumb.jpg",
          "caption": "Library of Congress, Geography and Map Division Route and Surveys of the South Magnetic Polar Party, 1908-09 (1909), Royal Geographical Society; Library of Congress copy. Same Geographical Journal1909 published sheet as BL source; DIFFERENT physical copy, LOC stamp retained. Not a scan of the BL-held exemplar. Source & reuse ↗",
          "title": "South Magnetic Polar Party",
          "href": "vault.html#artifact-f52885e87675"
        },
        "reuse_notice": "LOC item Rights & Access: Geography and Map digitized collections free to use and reuse unless Rights Advisory indicates otherwise; no contrary advisory shown.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1909",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f52885e87675",
        "input_record_sha256": "24273c605483f9f3b324fee762704e38e9d81ff6030cdb12035ddce7b43e9800",
        "original_fields": {
          "title": "South Magnetic Polar Party",
          "date": "1909",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Separate Nimrod magnetic-pole survey sheet.",
          "identifier": "Maps 159",
          "id": "artifact-f52885e87675",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 159",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-f52885e87675",
            "title": "South Magnetic Polar Party",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/19d94cb197774a701a3347254602f6b86ea810ff-565x400.jpg/bl-maps-159..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only. Two separate original sheets appear in the same side-by-side reproduction.",
            "image_region": "right map"
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/magnetic-party-1909-thumb.jpg",
            "width": 800,
            "height": 1118,
            "credit": "Library of Congress, Geography and Map Division",
            "source_url": "https://www.loc.gov/item/2002624043/",
            "rights": "LOC item Rights & Access: Geography and Map digitized collections free to use and reuse unless Rights Advisory indicates otherwise; no contrary advisory shown.",
            "transform": "Aspect-preserving thumbnail resize; no reconstruction."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Separate Nimrod magnetic-pole survey sheet."
        }
      },
      "record_sha256": "aa4db4eceb126c0a987809d95c91403b3d5aaa6f442fc770ac9214597bd74bdc"
    },
    {
      "id": "history:artifact-f67cfb1b64f7",
      "legacy_id": "artifact-f67cfb1b64f7",
      "kind": "historical",
      "title": "Seaweed — Ross Antarctic expedition",
      "url": "vault.html#artifact-f67cfb1b64f7",
      "summary": "Individually cataloged seaweed associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession AAB0212.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f67cfb1b64f71157cece",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1839-1842",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f67cfb1b64f7",
        "input_record_sha256": "bd4acfff01e19c04d545872f3f93be76ef66b2a633b3f4ac509da2419507caef",
        "original_fields": {
          "id": "artifact-f67cfb1b64f7",
          "title": "Seaweed — Ross Antarctic expedition",
          "date": "1839-1842",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-6260",
          "accession": "AAB0212",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "scientific-specimen",
            "Ross Antarctic expedition"
          ],
          "description": "Individually cataloged seaweed associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession AAB0212.",
          "visual_url": "https://collections.rmg.co.uk/media/477/102/rp5504.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-6260",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Seaweed",
          "notes": "One bound specimen group, not ten separately counted artifacts; specimens collected in New Zealand during the expedition.",
          "artifact_id": "AAB0212",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/477/102/rp5504.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Scientific specimens",
          "browsing_group": "specimens",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged seaweed associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession AAB0212."
        }
      },
      "record_sha256": "176448bb2c5572dd3dab219d7b0f1c7efc54f30a4223e2b333d82e97deb51718"
    },
    {
      "id": "history:artifact-f6e0d90d78f8",
      "legacy_id": "artifact-f6e0d90d78f8",
      "kind": "historical",
      "title": "Map of the square and stationary earth",
      "url": "vault.html#artifact-f6e0d90d78f8",
      "summary": "Orlando Ferguson’s explicitly anti-globe map.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:26401e8d79a29eae02c6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "ferguson-1893.jpg",
          "caption": "Actual artifact image; source credit: Library of Congress.",
          "title": "Map of the square and stationary earth",
          "href": "vault.html#artifact-f6e0d90d78f8"
        },
        "reuse_notice": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1893",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f6e0d90d78f8",
        "input_record_sha256": "06e5679670200d0143919a75450ee37c1d00a159df85ab4d259194538c78d1a3",
        "original_fields": {
          "title": "Map of the square and stationary earth",
          "date": "1893",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2011594831/",
          "rights": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
          "categories": [
            "map",
            "flat-earth",
            "cosmology"
          ],
          "description": "Orlando Ferguson’s explicitly anti-globe map.",
          "identifier": "2011594831",
          "id": "artifact-f6e0d90d78f8",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "2011594831",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-f6e0d90d78f8",
            "title": "Map of the square and stationary earth",
            "official_source_url": "https://www.loc.gov/item/2011594831/",
            "official_viewer_url": "https://www.loc.gov/resource/g3201a.ct003543/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/gmd/gmd3/g3201/g3201a/ct003543.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Orlando Ferguson’s explicitly anti-globe map."
        }
      },
      "record_sha256": "9d44b5f98584f2ab22e7a5ff85b334392fd5ac213fa7c976ef8165ad517bcad1"
    },
    {
      "id": "history:artifact-f806ba9095c8",
      "legacy_id": "artifact-f806ba9095c8",
      "kind": "historical",
      "title": "Socks — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-f806ba9095c8",
      "summary": "Individually cataloged socks associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4244.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f806ba9095c8181eeddb",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f806ba9095c8",
        "input_record_sha256": "3e956b9a1d08e29dfb7f0949013e64f577260e9024b112bbdf121c3e7ec6be39",
        "original_fields": {
          "id": "artifact-f806ba9095c8",
          "title": "Socks — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3999",
          "accession": "AAA4244",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged socks associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4244.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/528/rv1485.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3999",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Socks",
          "notes": "",
          "artifact_id": "AAA4244",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/528/rv1485.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged socks associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4244."
        }
      },
      "record_sha256": "35f76ef41f7dd4d56335f072cccb063eaf60a2f6642d8709c745676fda8e2e2c"
    },
    {
      "id": "history:artifact-f9b654a99ce7",
      "legacy_id": "artifact-f9b654a99ce7",
      "kind": "historical",
      "title": "In the ice-pack, from the Main-top of the Terra Nova. (Gran, Taylor and Wright). Dec. 22nd 1910",
      "url": "vault.html#artifact-f9b654a99ce7",
      "summary": "Cataloged expedition photograph: Three men stand on a yardarm of the ship ‘Terra Nova’. Pack ice extends into the distance.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e4edbe27a55527adf177",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "22.12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f9b654a99ce7",
        "input_record_sha256": "ceb427706e99d76fe34d3d7c4b33937546ee65ba412ee3a930df07d20d0379f0",
        "original_fields": {
          "id": "artifact-f9b654a99ce7",
          "artifact_id": "P2005/5/61",
          "title": "In the ice-pack, from the Main-top of the Terra Nova. (Gran, Taylor and Wright). Dec. 22nd 1910",
          "date": "22.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-61",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-61",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-61",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Three men stand on a yardarm of the ship ‘Terra Nova’. Pack ice extends into the distance.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Three men stand on a yardarm of the ship ‘Terra Nova’. Pack ice extends into the distance."
        }
      },
      "record_sha256": "eed77596ae5faec252afe0bc08f82b60f09e5aa06685142c536d97af9ff9b6de"
    },
    {
      "id": "history:artifact-fa044fbafd9e",
      "legacy_id": "artifact-fa044fbafd9e",
      "kind": "historical",
      "title": "V.D. Carse sitting on the deck of ‘Penola’",
      "url": "vault.html#artifact-fa044fbafd9e",
      "summary": "Cataloged expedition photograph: Portrait of Carse, smoking a pipe, sits on the deck of the sailing ship ‘Penola’ leaning on a stack of timber. He is drawing (?) on a board.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:eb350432eed6f006d6ec",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fa044fbafd9e",
        "input_record_sha256": "dcaef59b468b534d9168cd35b2f44a3a6678cdcc605d06609a2734479cdadea9",
        "original_fields": {
          "id": "artifact-fa044fbafd9e",
          "artifact_id": "P51/8/R008",
          "title": "V.D. Carse sitting on the deck of ‘Penola’",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Martin, James Hamilton",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r008",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r008",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r008",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Portrait of Carse, smoking a pipe, sits on the deck of the sailing ship ‘Penola’ leaning on a stack of timber. He is drawing (?) on a board.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Portrait of Carse, smoking a pipe, sits on the deck of the sailing ship ‘Penola’ leaning on a stack of timber. He is drawing (?) on a board."
        }
      },
      "record_sha256": "785672ba1089e55144a5e8ce6dc0231ba0d7ef9f8cab905c417295928196d864"
    },
    {
      "id": "history:artifact-fa305a999658",
      "legacy_id": "artifact-fa305a999658",
      "kind": "historical",
      "title": "A.A.E. Sledging traverse. Adelie Land.",
      "url": "vault.html#artifact-fa305a999658",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 17, 64cm x 91cm. Nunatak. Commonwealth Bay. Cape Pigeon Rookery.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fa305a999658",
        "input_record_sha256": "466c4075118a6e442eded8f049cd7d5bded803eaa4223c4cd73b1708533f7984",
        "original_fields": {
          "id": "artifact-fa305a999658",
          "artifact_id": "SLNSW AAE map 17",
          "accession": "Australasian Antarctic Expedition records, map 17",
          "title": "A.A.E. Sledging traverse. Adelie Land.",
          "date": "1912",
          "creator": "Stillwell, Frank Leslie.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 17, 64cm x 91cm. Nunatak. Commonwealth Bay. Cape Pigeon Rookery.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 17, 64cm x 91cm. Nunatak. Commonwealth Bay. Cape Pigeon Rookery."
        }
      },
      "record_sha256": "e1dda4ae2d3cc16b974eaa5c27c756e093cd4ee6fb1e396f925f31dfee2ccbf2"
    },
    {
      "id": "history:artifact-fb42d228f203",
      "legacy_id": "artifact-fb42d228f203",
      "kind": "historical",
      "title": "Sheet SR 41-42/6 Stinear Nunataks, Mac. Robertson Land, Australian Antarctic Territory",
      "url": "vault.html#artifact-fb42d228f203",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:30bbba6ac6b664bb6fac",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-106.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 106. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 41-42/6 Stinear Nunataks, Mac. Robertson Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-fb42d228f203"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May-1969",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fb42d228f203",
        "input_record_sha256": "7b1cad590f318ede2f4ba25b59488a0af4161e01fc96329095e23fe8b863fa37",
        "original_fields": {
          "id": "artifact-fb42d228f203",
          "artifact_id": "AADC map 106",
          "accession": "AADC map 106",
          "title": "Sheet SR 41-42/6 Stinear Nunataks, Mac. Robertson Land, Australian Antarctic Territory",
          "date": "May-1969",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=106",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-106.jpg",
            "width": 848,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 106. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=106",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents."
        }
      },
      "record_sha256": "9038eb0c9c87b45d952df77f0eab88cd1e581d17674dd9f64d30d7b24d8ca7a4"
    },
    {
      "id": "history:artifact-fc16cba8d222",
      "legacy_id": "artifact-fc16cba8d222",
      "kind": "historical",
      "title": "Icebound Scotia gangway",
      "url": "vault.html#artifact-fc16cba8d222",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-04-28",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fc16cba8d222",
        "input_record_sha256": "451f6d480b731a03bf7f9d22987d0c5aea46d4430324ad7c9099a4f32c5b7e24",
        "original_fields": {
          "title": "Icebound Scotia gangway",
          "date": "1903-04-28",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/545",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-fc16cba8d222",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-fc16cba8d222",
            "title": "Icebound Scotia gangway",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0545.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph."
        }
      },
      "record_sha256": "9b0ac38232dd015b5632abcb4bb0c6151c7966fe1d0ac2f76e8a1cbd14c25ecb"
    },
    {
      "id": "history:artifact-fc3e03fe8dac",
      "legacy_id": "artifact-fc3e03fe8dac",
      "kind": "historical",
      "title": "Polus Antarcticus",
      "url": "vault.html#artifact-fc3e03fe8dac",
      "summary": "Hondius-derived polar map; center remains uncertain.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1690",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fc3e03fe8dac",
        "input_record_sha256": "b77447258adde520bb57835ab0f8e6c63e97a8a639a66a9b942409bf56c662e0",
        "original_fields": {
          "title": "Polus Antarcticus",
          "date": "circa 1690",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Hondius-derived polar map; center remains uncertain.",
          "identifier": "Maps * 88710.(2.)",
          "id": "artifact-fc3e03fe8dac",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps * 88710.(2.)",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-fc3e03fe8dac",
            "title": "Polus Antarcticus",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/cb02158f8d68d1dbde2f379ee99e0d482aad8507-422x400.jpg/bl-maps-88710.(2.).jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Hondius-derived polar map; center remains uncertain."
        }
      },
      "record_sha256": "6644412561f44a9c1625eb6c0d4b9317691ea4e062495d3eedf3a1d765becd3a"
    },
    {
      "id": "history:artifact-fcab44b31898",
      "legacy_id": "artifact-fcab44b31898",
      "kind": "historical",
      "title": "Kharidat al-‘Aja’ib world map",
      "url": "vault.html#artifact-fcab44b31898",
      "summary": "Schematic cosmology, not Antarctic evidence.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:dcdf0cd75c1c21632109",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "Late 17th century",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fcab44b31898",
        "input_record_sha256": "b808a6e0c07614c910f4061ea4f0d05f44b752801f3db087cb6d766c6ab13904",
        "original_fields": {
          "id": "artifact-fcab44b31898",
          "title": "Kharidat al-‘Aja’ib world map",
          "creator": "Ibn al-Wardi tradition",
          "date": "Late 17th century",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj104.1",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s104.1.jpg",
          "classification": "Cosmological geography",
          "relevance_and_caution": "Schematic cosmology, not Antarctic evidence.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Schematic cosmology, not Antarctic evidence.",
          "categories": [
            "Cosmological geography"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-fcab44b31898",
            "title": "Kharidat al-‘Aja’ib world map",
            "official_source_url": "https://www.loc.gov/exhibits/world/earth.html#obj104.1",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj104.1",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s104.1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Schematic cosmology, not Antarctic evidence."
        }
      },
      "record_sha256": "2256dde06e184fa2032b0d7f301249a8fbe815bc2c688b67335c1327941ee294"
    },
    {
      "id": "history:artifact-fcd8151a467e",
      "legacy_id": "artifact-fcd8151a467e",
      "kind": "historical",
      "title": "Bryant & May's Motor Match — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-fcd8151a467e",
      "summary": "Individually cataloged match box associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4228.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:fcd8151a467e5901c963",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fcd8151a467e",
        "input_record_sha256": "90f51c8e8c0dbed6b75e28cd056c6b7ef12709feca7935564bed683588e25c1c",
        "original_fields": {
          "id": "artifact-fcd8151a467e",
          "title": "Bryant & May's Motor Match — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3983",
          "accession": "AAA4228",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged match box associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4228.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/293/rv9689.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3983",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Bryant & May's Motor Match",
          "notes": "",
          "artifact_id": "AAA4228",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/293/rv9689.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged match box associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4228."
        }
      },
      "record_sha256": "ec5672577887436ecc9db87a68d02cb3e277c24a86d8ae30781755b690cc4366"
    },
    {
      "id": "history:artifact-fd0a5d6e319b",
      "legacy_id": "artifact-fd0a5d6e319b",
      "kind": "historical",
      "title": "Typus orbis terrarum",
      "url": "vault.html#artifact-fd0a5d6e319b",
      "summary": "Conjectural southern continent.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1598",
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fd0a5d6e319b",
        "input_record_sha256": "62ffd557660b0764720062cee87e82af78ad0afc276ddc61d650331178406bf2",
        "original_fields": {
          "title": "Typus orbis terrarum",
          "date": "1598",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Conjectural southern continent.",
          "identifier": "Maps C.2.d.7",
          "id": "artifact-fd0a5d6e319b",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps C.2.d.7",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-fd0a5d6e319b",
            "title": "Typus orbis terrarum",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/73c7c8e682fd3df7b2469bb7ceb02b4b15ec6318-570x394.jpg/bl-maps-c.2.d.7..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Conjectural southern continent."
        }
      },
      "record_sha256": "c63d2e8d0615194d246c1b7d3469059a674dbc3990b39c1df085c3a0efda6854"
    },
    {
      "id": "history:artifact-fdc12076086a",
      "legacy_id": "artifact-fdc12076086a",
      "kind": "historical",
      "title": "Group in Wardroom of Terra Nova.",
      "url": "vault.html#artifact-fdc12076086a",
      "summary": "Cataloged expedition photograph: Expedition members sit and stand around a table in the wardroom of the ship ‘Terra Nova’. Some write, some read, a few smoke pipes. Mugs, teapots and jugs stand on the table.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:24bb01fdcab3c0b9c265",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "12.1910",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fdc12076086a",
        "input_record_sha256": "e40fe67464471044e097268fc117b1363b7c96e765faa7301404132061bb302a",
        "original_fields": {
          "id": "artifact-fdc12076086a",
          "artifact_id": "P2005/5/76",
          "title": "Group in Wardroom of Terra Nova.",
          "date": "12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-76",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-76",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-76",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Expedition members sit and stand around a table in the wardroom of the ship ‘Terra Nova’. Some write, some read, a few smoke pipes. Mugs, teapots and jugs stand on the table.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Expedition members sit and stand around a table in the wardroom of the ship ‘Terra Nova’. Some write, some read, a few smoke pipes. Mugs, teapots and jugs stand on the table."
        }
      },
      "record_sha256": "152a5189107182e608fa62ad3e447bbfa0695d2182cddf7b7a5161c46c332bcf"
    },
    {
      "id": "history:artifact-fe0dfcc16e21",
      "legacy_id": "artifact-fe0dfcc16e21",
      "kind": "historical",
      "title": "Deep sea thermometer — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-fe0dfcc16e21",
      "summary": "Individually cataloged deep sea thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4230.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:fe0dfcc16e210a2bed24",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fe0dfcc16e21",
        "input_record_sha256": "3f0b7fccb7df1ffdc5c999014e6d7f9c07e5bd717839bbd6c8b9b7cd85eb7031",
        "original_fields": {
          "id": "artifact-fe0dfcc16e21",
          "title": "Deep sea thermometer — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3985",
          "accession": "AAA4230",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged deep sea thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4230.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Deep sea thermometer",
          "notes": "",
          "artifact_id": "AAA4230",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged deep sea thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4230."
        }
      },
      "record_sha256": "d486b2fb2502b6df33b02696d6f9e86326001351ea182821041937e8335b71c6"
    },
    {
      "id": "history:artifact-fe945c727f9e",
      "legacy_id": "artifact-fe945c727f9e",
      "kind": "historical",
      "title": "Snow goggles — Australasian Antarctic Expedition",
      "url": "vault.html#artifact-fe945c727f9e",
      "summary": "Individually cataloged snow goggles associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4224.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:fe945c727f9e091d9da7",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fe945c727f9e",
        "input_record_sha256": "95ceb41c9d35eb3bcd13ca391b8397694cbd7e77f1ac0236db3e060a8f675df0",
        "original_fields": {
          "id": "artifact-fe945c727f9e",
          "title": "Snow goggles — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3979",
          "accession": "AAA4224",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged snow goggles associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4224.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/302/rv9698.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3979",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Snow goggles",
          "notes": "",
          "artifact_id": "AAA4224",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/302/rv9698.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged snow goggles associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4224."
        }
      },
      "record_sha256": "01df198cf0b7761fcd9df3180c5a9de232dceefde2b9212a6272b4739f6d4fea"
    },
    {
      "id": "history:artifact-feature-byrd-broadcast",
      "legacy_id": "artifact-feature-byrd-broadcast",
      "kind": "historical",
      "title": "Byrd archival broadcast recording",
      "url": "vault.html#artifact-feature-byrd-broadcast",
      "summary": "Listen to the original archive record before quoting a viral clip. No verified transcript or date-specific quotation is supplied here.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6fbcd18b0c72306768bc",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Recording linked only; no audio or image copied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "Date not established in this catalog",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-byrd-broadcast",
        "input_record_sha256": "760ec1f4d16e3a8451ba4cec9a0b4ffe027951709868f7b7ffda52de7ebf6bc2",
        "original_fields": {
          "id": "artifact-feature-byrd-broadcast",
          "title": "Byrd archival broadcast recording",
          "date": "Date not established in this catalog",
          "institution": "US National Archives recording / Internet Archive",
          "source_url": "https://archive.org/details/gov.archives.arc.95934",
          "categories": [
            "records"
          ],
          "description": "Listen to the original archive record before quoting a viral clip. No verified transcript or date-specific quotation is supplied here.",
          "rights": "Recording linked only; no audio or image copied.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Listen to the original archive record before quoting a viral clip. No verified transcript or date-specific quotation is supplied here.",
          "reference_research_leads": {
            "reference_id": "t-byrd-quotes",
            "items": [
              "Quotes attributed to Byrd from 1947 and 1955–56 broadcasts",
              "A clip from the Longines Chronoscope interview"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "2894f3c87c21f70fbe0d90d0644241a0b53d392104d0fe3bd9831b75e66253a3"
    },
    {
      "id": "history:artifact-feature-fine1534",
      "legacy_id": "artifact-feature-fine1534",
      "kind": "historical",
      "title": "Oronce Fine world map, 1534",
      "url": "vault.html#artifact-feature-fine1534",
      "summary": "A historical world map with a conjectural southern continent—not a verified Antarctic survey.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:14b9f52f82bd04dc65f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "oronce-fine-1534.jpg",
          "caption": "Library of Congress / World Digital Library / Actual archival image. Existing cleared LOC reproduction; source credit retained.",
          "title": "Oronce Fine world map, 1534",
          "href": "vault.html#artifact-feature-fine1534"
        },
        "reuse_notice": "Existing cleared LOC reproduction; source credit retained.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1534",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-fine1534",
        "input_record_sha256": "d0085b989e6da114480d14ebad5b98d21bf04166758eda8c39b20e106a12783d",
        "original_fields": {
          "id": "artifact-feature-fine1534",
          "title": "Oronce Fine world map, 1534",
          "date": "1534",
          "institution": "Library of Congress / World Digital Library",
          "source_url": "https://www.loc.gov/item/2021668428/",
          "categories": [
            "maps"
          ],
          "description": "A historical world map with a conjectural southern continent—not a verified Antarctic survey.",
          "rights": "Existing cleared LOC reproduction; source credit retained.",
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "A historical world map with a conjectural southern continent—not a verified Antarctic survey."
        }
      },
      "record_sha256": "a537c943cb96aff9365b94a8ee2b495a48bd5fb7a56001a30c6d2d28bdc146e2"
    },
    {
      "id": "history:artifact-feature-gleason1892",
      "legacy_id": "artifact-feature-gleason1892",
      "kind": "historical",
      "title": "Gleason’s New Standard Map of the World",
      "url": "vault.html#artifact-feature-gleason1892",
      "summary": "An authentic historical flat-Earth advocacy artifact. Its publication is not evidence that its world model is accurate.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e7bbf217a71b46d53647",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "gleason-1892-highres.jpg",
          "caption": "Boston Public Library / Norman B. Leventhal Map Center / Actual archival image. No known copyright restrictions reported by the holding institution.",
          "title": "Gleason’s New Standard Map of the World",
          "href": "vault.html#artifact-feature-gleason1892"
        },
        "reuse_notice": "No known copyright restrictions reported by the holding institution.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1892",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-gleason1892",
        "input_record_sha256": "5de29afd7c7a249337cdf55bfaa7a75213315355bf42ca74afa11febba36db7c",
        "original_fields": {
          "id": "artifact-feature-gleason1892",
          "title": "Gleason’s New Standard Map of the World",
          "date": "1892",
          "institution": "Boston Public Library / Norman B. Leventhal Map Center",
          "source_url": "https://ark.digitalcommonwealth.org/ark:/50959/7h149v85z",
          "categories": [
            "cosmology"
          ],
          "description": "An authentic historical flat-Earth advocacy artifact. Its publication is not evidence that its world model is accurate.",
          "rights": "No known copyright restrictions reported by the holding institution.",
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "An authentic historical flat-Earth advocacy artifact. Its publication is not evidence that its world model is accurate."
        }
      },
      "record_sha256": "88785eb7672ed6674fe541f3852d6b0330b3b0e1fb872f3e931307e5f6c49bc1"
    },
    {
      "id": "history:artifact-feature-highjump-aircraft",
      "legacy_id": "artifact-feature-highjump-aircraft",
      "kind": "historical",
      "title": "Aircraft on Antarctic ice — archival film still",
      "url": "vault.html#artifact-feature-highjump-aircraft",
      "summary": "A different archival frame showing expedition aircraft. The two frames are not counted as two independent expeditions or corroborations.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c8a27eeac610321109cd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-aircraft.png",
          "caption": "US National Archives / Actual archival image. Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "title": "Aircraft on Antarctic ice — archival film still",
          "href": "vault.html#artifact-feature-highjump-aircraft"
        },
        "reuse_notice": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1946–47 expedition",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-highjump-aircraft",
        "input_record_sha256": "8feb98bd29b4c5532d796fa6710fe2b725a842cabe63bbb8393d8562044af9f6",
        "original_fields": {
          "id": "artifact-feature-highjump-aircraft",
          "title": "Aircraft on Antarctic ice — archival film still",
          "date": "1946–47 expedition",
          "institution": "US National Archives",
          "source_url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
          "categories": [
            "photography"
          ],
          "description": "A different archival frame showing expedition aircraft. The two frames are not counted as two independent expeditions or corroborations.",
          "rights": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "A different archival frame showing expedition aircraft. The two frames are not counted as two independent expeditions or corroborations."
        }
      },
      "record_sha256": "0de5859eff3f1220d0a88fb6395e949bddad3940691435f03701b20f15583c08"
    },
    {
      "id": "history:artifact-feature-highjump-base",
      "legacy_id": "artifact-feature-highjump-base",
      "kind": "historical",
      "title": "Highjump at Little America IV — archival film still",
      "url": "vault.html#artifact-feature-highjump-base",
      "summary": "A distinct archival film frame reproduced in NARA’s Highjump feature. It shows a documented expedition base, not evidence of a hidden-base claim.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c8a27eeac610321109cd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-base.png",
          "caption": "US National Archives / Actual archival image. Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "title": "Highjump at Little America IV — archival film still",
          "href": "vault.html#artifact-feature-highjump-base"
        },
        "reuse_notice": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1946–47 expedition",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-highjump-base",
        "input_record_sha256": "364dfd684623408224a4f7d533e757837d389e891712590c9f160bfeb99ed9a9",
        "original_fields": {
          "id": "artifact-feature-highjump-base",
          "title": "Highjump at Little America IV — archival film still",
          "date": "1946–47 expedition",
          "institution": "US National Archives",
          "source_url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
          "categories": [
            "photography"
          ],
          "description": "A distinct archival film frame reproduced in NARA’s Highjump feature. It shows a documented expedition base, not evidence of a hidden-base claim.",
          "rights": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "A distinct archival film frame reproduced in NARA’s Highjump feature. It shows a documented expedition base, not evidence of a hidden-base claim."
        }
      },
      "record_sha256": "70fe75582e13824d500bb5a476afcbde75c177745b055c49540674f08ec5e3b6"
    },
    {
      "id": "history:artifact-feature-ross1847",
      "legacy_id": "artifact-feature-ross1847",
      "kind": "historical",
      "title": "Ross South Polar Chart",
      "url": "vault.html#artifact-feature-ross1847",
      "summary": "Expedition routes and geographic knowledge recorded on a historical southern-polar chart.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bca640e8657c0d723300",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "ross-chart-1847.jpg",
          "caption": "UWM Libraries / World Digital Library / Library of Congress / Actual archival image. No known copyright restrictions reported for the linked collection.",
          "title": "Ross South Polar Chart",
          "href": "vault.html#artifact-feature-ross1847"
        },
        "reuse_notice": "No known copyright restrictions reported for the linked collection.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1847",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-ross1847",
        "input_record_sha256": "1e837ef629e5891d41a814d22326873d19b777870d912c26e8b712f3565877bd",
        "original_fields": {
          "id": "artifact-feature-ross1847",
          "title": "Ross South Polar Chart",
          "date": "1847",
          "institution": "UWM Libraries / World Digital Library / Library of Congress",
          "source_url": "https://www.loc.gov/item/2021668666/",
          "categories": [
            "maps"
          ],
          "description": "Expedition routes and geographic knowledge recorded on a historical southern-polar chart.",
          "rights": "No known copyright restrictions reported for the linked collection.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Expedition routes and geographic knowledge recorded on a historical southern-polar chart."
        }
      },
      "record_sha256": "e80f271eecc0e98f5a8871cab0dce0b193a82985b44dc33a9314240c60de2119"
    },
    {
      "id": "history:artifact-hooker-davis1839",
      "legacy_id": "artifact-hooker-davis1839",
      "kind": "historical",
      "title": "Chart of the South Polar Sea — annotated expedition copy",
      "url": "vault.html#artifact-hooker-davis1839",
      "summary": "The institution catalogs a June 1839 Hydrographic Office chart with later manuscript tracks associated with John Edward Davis and Joseph Dalton Hooker during the Ross expedition. Printing and annotations are different events; this is not a claim that all later tracks were known in 1839.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e822503d8a90c0d43341",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Source viewer linked. Current Rumsey publication terms require attribution and item-specific checking; no new image embedded in this update.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1839 printed chart; later expedition annotations",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-hooker-davis1839",
        "input_record_sha256": "d3e6a1ec6eab98b865ea4800c8cc1ae1b8fd4cd85f945c285388bc246bb6a318",
        "original_fields": {
          "id": "artifact-hooker-davis1839",
          "title": "Chart of the South Polar Sea — annotated expedition copy",
          "date": "1839 printed chart; later expedition annotations",
          "institution": "David Rumsey Historical Map Collection",
          "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~364749~90132153:Chart-of-the-South-Polar-Sea-",
          "artifact_id": "16137.000",
          "description": "The institution catalogs a June 1839 Hydrographic Office chart with later manuscript tracks associated with John Edward Davis and Joseph Dalton Hooker during the Ross expedition. Printing and annotations are different events; this is not a claim that all later tracks were known in 1839.",
          "rights": "Source viewer linked. Current Rumsey publication terms require attribution and item-specific checking; no new image embedded in this update.",
          "rights_url": "https://www.davidrumsey.com/about/copyright-and-permissions",
          "browsing_group": "regional-maps",
          "categories": [
            "regional map",
            "Ross expedition"
          ],
          "embed_allowed": false,
          "asset_status": "source-link-only",
          "verification": "Institutional object/catalog record checked 2026-10-28; no proof of modern speculative claims.",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "The institution catalogs a June 1839 Hydrographic Office chart with later manuscript tracks associated with John Edward Davis and Joseph Dalton Hooker during the Ross expedition. Printing and annotations are different events; this is not a claim that all later tracks were known in 1839."
        }
      },
      "record_sha256": "3a9b0d04f6adde74f7ad2a9af39224245f0534e21df01a1a2d54bbc317d168f4"
    },
    {
      "id": "history:artifact-mercator-1569",
      "legacy_id": "artifact-mercator-1569",
      "kind": "historical",
      "title": "Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata",
      "url": "vault.html#artifact-mercator-1569",
      "summary": "Mercator’s 1569 world map in the Basel holding, shown as the institution’s complete-map composite. Its southern continent is conjectural, not a verified survey of ice-free Antarctica.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:1f9bae9576bb013c23e5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-mercator-1569.jpg",
          "caption": "Gerhard Mercator (1569), Universitätsbibliothek Basel, UBH Kartenslg AA 3-5, https://doi.org/10.3931/e-rara-25290 / Public Domain Mark. Actual institutional image reproduction; not proof of later interpretations. Source & reuse ↗",
          "title": "Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata",
          "href": "vault.html#artifact-mercator-1569"
        },
        "reuse_notice": "Public Domain Mark 1.0",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1569",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-mercator-1569",
        "input_record_sha256": "0a1bf871d6d7df484775b8b6154c1e14531fac051e9f19b8ffaebf0f6c51af5d",
        "original_fields": {
          "id": "artifact-mercator-1569",
          "title": "Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata",
          "date": "1569",
          "source_url": "https://www.e-rara.ch/bau_1/content/titleinfo/7955225",
          "institution": "Universitätsbibliothek Basel",
          "rights": "Public Domain Mark 1.0",
          "rights_url": "https://www.e-rara.ch/bau_1/content/titleinfo/7955225",
          "credit": "Gerhard Mercator (1569), Universitätsbibliothek Basel, UBH Kartenslg AA 3-5, https://doi.org/10.3931/e-rara-25290 / Public Domain Mark.",
          "accession": "UBH Kartenslg AA 3-5",
          "notes": "Institution’s complete-map composite canvas [4], not a reconstructed coastline. Southern land is conjectural. Institution requests citation and notification of published digital offering; no notification sent.",
          "description": "Mercator’s 1569 world map in the Basel holding, shown as the institution’s complete-map composite. Its southern continent is conjectural, not a verified survey of ice-free Antarctica.",
          "categories": [
            "world map",
            "historical geography"
          ],
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "verification": "Institutional catalog and Public Domain Mark checked; not evidence of speculative geographic interpretations.",
          "display_image": {
            "src": "thumbs/artifact-mercator-1569.jpg",
            "width": 960,
            "height": 611,
            "credit": "Gerhard Mercator (1569), Universitätsbibliothek Basel, UBH Kartenslg AA 3-5, https://doi.org/10.3931/e-rara-25290 / Public Domain Mark.",
            "source_url": "https://www.e-rara.ch/bau_1/content/titleinfo/7955225",
            "rights": "Public Domain Mark 1.0",
            "transform": "Resize only; original aspect ratio preserved; no AI generation, crop or content alteration."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Mercator’s 1569 world map in the Basel holding, shown as the institution’s complete-map composite. Its southern continent is conjectural, not a verified survey of ice-free Antarctica."
        }
      },
      "record_sha256": "7e0c05329eaa0ae31c35ee6fe693eea0887ce8a5b552918341350b92e9b0d686"
    },
    {
      "id": "history:artifact-zba1610-compass",
      "legacy_id": "artifact-zba1610-compass",
      "kind": "historical",
      "title": "Boat compass and binnacle — Shackleton expedition",
      "url": "vault.html#artifact-zba1610-compass",
      "summary": "A liquid lifeboat compass taken on Shackleton’s Trans-Antarctic expedition. The museum says it was possibly the one carried in the James Caird to South Georgia—not a certain identification.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c40b55142726b85d763d",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional images include a do-not-reproduce notice; external object record only. No image copied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1914",
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-zba1610-compass",
        "input_record_sha256": "9ae931d8251ae472136dee0cfdb8e24a26bf3ea442bbed34324cc2b63ba95481",
        "original_fields": {
          "id": "artifact-zba1610-compass",
          "title": "Boat compass and binnacle — Shackleton expedition",
          "date": "circa 1914",
          "institution": "Royal Museums Greenwich / National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212310",
          "artifact_id": "ZBA1610",
          "description": "A liquid lifeboat compass taken on Shackleton’s Trans-Antarctic expedition. The museum says it was possibly the one carried in the James Caird to South Georgia—not a certain identification.",
          "rights": "Institutional images include a do-not-reproduce notice; external object record only. No image copied.",
          "browsing_group": "objects",
          "categories": [
            "expedition equipment",
            "Shackleton expedition"
          ],
          "embed_allowed": false,
          "asset_status": "source-link-only",
          "verification": "Institutional object/catalog record checked 2026-10-28; no proof of modern speculative claims.",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "A liquid lifeboat compass taken on Shackleton’s Trans-Antarctic expedition. The museum says it was possibly the one carried in the James Caird to South Georgia—not a certain identification."
        }
      },
      "record_sha256": "5d1496cf9363d175c14dbba67638a11396ca1f45e6a9d961e89b243c3c2e0b3e"
    },
    {
      "id": "theory:ADD-A001",
      "legacy_id": "ADD-A001",
      "kind": "theory",
      "title": "Berserk loss blamed on New Zealand naval conspiracy",
      "url": "theory-vault.html#ADD-A001",
      "summary": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk.",
      "claim": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Reporting records the accusation, not proof of deliberate sinking. The yacht disappeared during severe Antarctic weather.",
        "limitations": [
          "Published interview reporting; primary accusation is attributed to Andhøy."
        ]
      },
      "sources": [
        {
          "source_id": "source:9b54ff314cab082edcbe",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A001",
        "input_record_sha256": "8fd272e889e4790b5c413d5044311586b569de4fcf56254809e395a97a00157e",
        "original_fields": {
          "id": "ADD-A001",
          "title": "Berserk loss blamed on New Zealand naval conspiracy",
          "claim": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk.",
          "category": "expedition controversy",
          "status": "Unsubstantiated allegation",
          "counterevidence": "Reporting records the accusation, not proof of deliberate sinking. The yacht disappeared during severe Antarctic weather.",
          "sources": [
            {
              "url": "https://interactives.stuff.co.nz/2022/01/the-berserk-incident/",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "Published interview reporting; primary accusation is attributed to Andhøy."
          ],
          "claim_family": "Berserk loss",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk."
        }
      },
      "record_sha256": "ea4a6e41097eeece2c8f25756317168c06535be5241de21d7f17fbc2b3aa36d2"
    },
    {
      "id": "theory:ADD-A002",
      "legacy_id": "ADD-A002",
      "kind": "theory",
      "title": "Mawson survival cannibalism allegation",
      "url": "theory-vault.html#ADD-A002",
      "summary": "Rumours alleged Douglas Mawson survived by eating his dead companion Xavier Mertz.",
      "claim": "Rumours alleged Douglas Mawson survived by eating his dead companion Xavier Mertz.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Mawson denied the allegation; the NFSA account says a modern recreation makes survival without cannibalism more plausible but cannot settle every circumstance.",
        "limitations": [
          "Historical allegation, not an established account of conduct."
        ]
      },
      "sources": [
        {
          "source_id": "source:46a875a8526244ab1447",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A002",
        "input_record_sha256": "2193d9962ca207f7e4f6b151976f0f118d2032a7ccbc696a9b3b51ddd26ecde7",
        "original_fields": {
          "id": "ADD-A002",
          "title": "Mawson survival cannibalism allegation",
          "claim": "Rumours alleged Douglas Mawson survived by eating his dead companion Xavier Mertz.",
          "category": "expedition controversy",
          "status": "Unsupported historical allegation",
          "counterevidence": "Mawson denied the allegation; the NFSA account says a modern recreation makes survival without cannibalism more plausible but cannot settle every circumstance.",
          "sources": [
            {
              "url": "https://aso.gov.au/titles/documentaries/mawson-life-and-death/notes/",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "Historical allegation, not an established account of conduct."
          ],
          "claim_family": "Mawson survival",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Rumours alleged Douglas Mawson survived by eating his dead companion Xavier Mertz."
        }
      },
      "record_sha256": "9f6edc53f554f859b5c59d50d93af4af7b616dd42a66f5e023ffc1a65370549a"
    },
    {
      "id": "theory:ADD-A003",
      "legacy_id": "ADD-A003",
      "kind": "theory",
      "title": "Mertz death from vitamin-A poisoning",
      "url": "theory-vault.html#ADD-A003",
      "summary": "Cleland and Southcott proposed that dog-liver vitamin A toxicity caused the expedition illness and Mertz’s death.",
      "claim": "Cleland and Southcott proposed that dog-liver vitamin A toxicity caused the expedition illness and Mertz’s death.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "A 2022 toxicology paper supports this interpretation; symptoms were not uniquely diagnostic and a 2005 reappraisal disputed it.",
        "limitations": [
          "No contemporary biochemical testing; not medical advice or a proven diagnosis."
        ]
      },
      "sources": [
        {
          "source_id": "source:1bccb445530a4cb42ee4",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:e930243279bf843145fa",
          "role": "assessment/context",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A003",
        "input_record_sha256": "b31431608419c9ca1a2c4cb1e982206b284b35631c55dbe2e43bcce5fc683af6",
        "original_fields": {
          "id": "ADD-A003",
          "title": "Mertz death from vitamin-A poisoning",
          "claim": "Cleland and Southcott proposed that dog-liver vitamin A toxicity caused the expedition illness and Mertz’s death.",
          "category": "historical medical hypothesis",
          "status": "Retrospective diagnosis; disputed",
          "counterevidence": "A 2022 toxicology paper supports this interpretation; symptoms were not uniquely diagnostic and a 2005 reappraisal disputed it.",
          "sources": [
            {
              "url": "https://pubmed.ncbi.nlm.nih.gov/36286587/",
              "role": "claim provenance and/or documented assessment"
            },
            {
              "url": "https://www.mja.com.au/journal/2005/183/11/mawson-and-mertz-re-evaluation-their-ill-fated-mapping-journey-during-1911-1914",
              "role": "assessment/context"
            }
          ],
          "limitations": [
            "No contemporary biochemical testing; not medical advice or a proven diagnosis."
          ],
          "claim_family": "Mertz illness",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Cleland and Southcott proposed that dog-liver vitamin A toxicity caused the expedition illness and Mertz’s death."
        }
      },
      "record_sha256": "2b1c807a81bea4d6368d5a29565928f0db79e9d8cf1d52ce202964414237f4cf"
    },
    {
      "id": "theory:ADD-A004",
      "legacy_id": "ADD-A004",
      "kind": "theory",
      "title": "Mertz starvation-and-diet-change hypothesis",
      "url": "theory-vault.html#ADD-A004",
      "summary": "Carrington-Smith proposed severe food deprivation and inability to tolerate dietary change rather than vitamin-A toxicity.",
      "claim": "Carrington-Smith proposed severe food deprivation and inability to tolerate dietary change rather than vitamin-A toxicity.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The proposal competes with toxicology interpretations; later humanities research disputes the assumption that Mertz was vegetarian.",
        "limitations": [
          "A distinct proposed cause, not another name for vitamin-A poisoning."
        ]
      },
      "sources": [
        {
          "source_id": "source:e930243279bf843145fa",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5ae945b8d9d811720113",
          "role": "assessment/context",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A004",
        "input_record_sha256": "0b86a02aac23b478a6937a85c1d8ad7f25b2c5d5fe221fd27c22c97e8c54d618",
        "original_fields": {
          "id": "ADD-A004",
          "title": "Mertz starvation-and-diet-change hypothesis",
          "claim": "Carrington-Smith proposed severe food deprivation and inability to tolerate dietary change rather than vitamin-A toxicity.",
          "category": "historical medical hypothesis",
          "status": "Published alternative hypothesis",
          "counterevidence": "The proposal competes with toxicology interpretations; later humanities research disputes the assumption that Mertz was vegetarian.",
          "sources": [
            {
              "url": "https://www.mja.com.au/journal/2005/183/11/mawson-and-mertz-re-evaluation-their-ill-fated-mapping-journey-during-1911-1914",
              "role": "claim provenance and/or documented assessment"
            },
            {
              "url": "https://australianhumanitiesreview.org/2011/11/01/dogs-meat-and-douglas-mawson/",
              "role": "assessment/context"
            }
          ],
          "limitations": [
            "A distinct proposed cause, not another name for vitamin-A poisoning."
          ],
          "claim_family": "Mertz illness",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Carrington-Smith proposed severe food deprivation and inability to tolerate dietary change rather than vitamin-A toxicity."
        }
      },
      "record_sha256": "793b06ff31d7f431b1ae1b1744c2b8d9a836b89f9e9632ee1bef6d9d7faae196"
    },
    {
      "id": "theory:ADD-A005",
      "legacy_id": "ADD-A005",
      "kind": "theory",
      "title": "Rodney Marks murder speculation",
      "url": "theory-vault.html#ADD-A005",
      "summary": "Public discussion has proposed homicide as an explanation for Marks’s fatal methanol poisoning.",
      "claim": "Public discussion has proposed homicide as an explanation for Marks’s fatal methanol poisoning.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The available investigation did not establish how the methanol was ingested. Do not identify any person as responsible or call the death a proven murder.",
        "limitations": [
          "Community provenance, not a coroner’s ruling; accident and other possibilities remain unresolved."
        ]
      },
      "sources": [
        {
          "source_id": "source:2add0b35add85a53ae98",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:93ad731e7e3f39c785a1",
          "role": "assessment/context",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A005",
        "input_record_sha256": "8a61a8be181c57d543c1c3194321b51f36306be481a2ce7b1efaae55650aa2d7",
        "original_fields": {
          "id": "ADD-A005",
          "title": "Rodney Marks murder speculation",
          "claim": "Public discussion has proposed homicide as an explanation for Marks’s fatal methanol poisoning.",
          "category": "unresolved death interpretation",
          "status": "Unresolved; homicide not established",
          "counterevidence": "The available investigation did not establish how the methanol was ingested. Do not identify any person as responsible or call the death a proven murder.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/UnresolvedMysteries/comments/e0b7ev",
              "role": "claim provenance and/or documented assessment"
            },
            {
              "url": "https://www.mentalfloss.com/crime/mysterious-death-rodney-marks-scientist-who-was-poisoned-antarctica",
              "role": "assessment/context"
            }
          ],
          "limitations": [
            "Community provenance, not a coroner’s ruling; accident and other possibilities remain unresolved."
          ],
          "claim_family": "Rodney Marks death",
          "verification_date": "2026-10-28",
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Public discussion has proposed homicide as an explanation for Marks’s fatal methanol poisoning."
        }
      },
      "record_sha256": "1cb754805be5124bafb9bc369d6046d7b8fda1945bbea2f928e18c087aceb9f5"
    },
    {
      "id": "theory:ADD-A006",
      "legacy_id": "ADD-A006",
      "kind": "theory",
      "title": "Shackleton’s providential fourth companion",
      "url": "theory-vault.html#ADD-A006",
      "summary": "Shackleton and later interpreters described an unseen extra companion during the South Georgia crossing as providential guidance.",
      "claim": "Shackleton and later interpreters described an unseen extra companion during the South Georgia crossing as providential guidance.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The reported sensation does not establish a supernatural visitor; exhaustion and sensed-presence mechanisms are alternative explanations.",
        "limitations": [
          "South Georgia is sub-Antarctic, included for its direct connection to the Endurance expedition."
        ]
      },
      "sources": [
        {
          "source_id": "source:5bc8f10a0d4999190183",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A006",
        "input_record_sha256": "43660e43f514945244bd7f7e0a42e47fc7282c5527ab4b3438f077fd3e1296e5",
        "original_fields": {
          "id": "ADD-A006",
          "title": "Shackleton’s providential fourth companion",
          "claim": "Shackleton and later interpreters described an unseen extra companion during the South Georgia crossing as providential guidance.",
          "category": "expedition folklore",
          "status": "Documented subjective experience; interpretation unproven",
          "counterevidence": "The reported sensation does not establish a supernatural visitor; exhaustion and sensed-presence mechanisms are alternative explanations.",
          "sources": [
            {
              "url": "https://jamescairdsociety.com/wp-content/uploads/2021/10/Journal-No.11-3.pdf",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "South Georgia is sub-Antarctic, included for its direct connection to the Endurance expedition."
          ],
          "claim_family": "Fourth companion",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Shackleton and later interpreters described an unseen extra companion during the South Georgia crossing as providential guidance."
        }
      },
      "record_sha256": "764f9b308cd5dcc727b54a16bc3da0411e6781dbff2d0b7eccfe43ebc6cf245f"
    },
    {
      "id": "theory:ADD-A007",
      "legacy_id": "ADD-A007",
      "kind": "theory",
      "title": "Scott’s Hut haunting reports",
      "url": "theory-vault.html#ADD-A007",
      "summary": "Paranormal accounts describe unexplained presences and sensations at the Cape Evans expedition hut.",
      "claim": "Paranormal accounts describe unexplained presences and sensations at the Cape Evans expedition hut.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Atmosphere and anecdotal experiences are not independent evidence of ghosts.",
        "limitations": [
          "Paranormal-site provenance; witness reports are not independently authenticated."
        ]
      },
      "sources": [
        {
          "source_id": "source:67b6060e5da53c73d3eb",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A007",
        "input_record_sha256": "c1a7701bebd3f619b24b6546d993dcb003d7dec594b92dab0e736d6a76d6b8f7",
        "original_fields": {
          "id": "ADD-A007",
          "title": "Scott’s Hut haunting reports",
          "claim": "Paranormal accounts describe unexplained presences and sensations at the Cape Evans expedition hut.",
          "category": "ghost folklore",
          "status": "Unverified paranormal account",
          "counterevidence": "Atmosphere and anecdotal experiences are not independent evidence of ghosts.",
          "sources": [
            {
              "url": "https://ghostwatch.com/paranormal-report/haunted-locations/antarctica/scotts-hut-at-cape-evans/",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "Paranormal-site provenance; witness reports are not independently authenticated."
          ],
          "claim_family": "Scott hut haunting",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Paranormal accounts describe unexplained presences and sensations at the Cape Evans expedition hut."
        }
      },
      "record_sha256": "1d8ee499b1217debb122d24f45cfd0cfbf906bb7e681920a78c8b0ec67e02f25"
    },
    {
      "id": "theory:ADD-A008",
      "legacy_id": "ADD-A008",
      "kind": "theory",
      "title": "McMurdo phantom sled dogs",
      "url": "theory-vault.html#ADD-A008",
      "summary": "An online Antarctic ghost account describes hearing or seeing dogs near the station and Discovery Hut.",
      "claim": "An online Antarctic ghost account describes hearing or seeing dogs near the station and Discovery Hut.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The post provides no independently testable evidence of animal spirits.",
        "limitations": [
          "Not the same location or apparition claim as Cape Evans; remains a low-evidence anecdote."
        ]
      },
      "sources": [
        {
          "source_id": "source:67eb0f775f0e1db662ad",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A008",
        "input_record_sha256": "35748dbf5c8f784f92c95d93175471a99d0ba42dc4c45206943fc47ed761e5e8",
        "original_fields": {
          "id": "ADD-A008",
          "title": "McMurdo phantom sled dogs",
          "claim": "An online Antarctic ghost account describes hearing or seeing dogs near the station and Discovery Hut.",
          "category": "ghost folklore",
          "status": "Anonymous anecdote",
          "counterevidence": "The post provides no independently testable evidence of animal spirits.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/Paranormal/comments/j4bae0",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "Not the same location or apparition claim as Cape Evans; remains a low-evidence anecdote."
          ],
          "claim_family": "Phantom dogs",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "An online Antarctic ghost account describes hearing or seeing dogs near the station and Discovery Hut."
        }
      },
      "record_sha256": "067fc2ef23b1c4b635a9d954a35009df4a1edae504f3fc4e555f605124d90315"
    },
    {
      "id": "theory:ADD-A009",
      "legacy_id": "ADD-A009",
      "kind": "theory",
      "title": "Rectangular iceberg cut by aliens",
      "url": "theory-vault.html#ADD-A009",
      "summary": "Online interpretations attributed the sharp geometry of a 2018 iceberg image to artificial or alien cutting.",
      "claim": "Online interpretations attributed the sharp geometry of a 2018 iceberg image to artificial or alien cutting.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The photographed object is a tabular iceberg; sharp fracture edges need not be artificial.",
        "limitations": [
          "Source calls the iceberg apparently finely cut; alien variants are documented in accompanying assessment."
        ]
      },
      "sources": [
        {
          "source_id": "source:fa965fe4f5a5f3b6fdef",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:cbe8e8622fca770aeb9a",
          "role": "assessment/context",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:1555b6cec20d17355a3b",
          "role": "explicit documentation and rejection of alien-cutting interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:874cb58bbe69aa893761",
          "role": "NASA IceBridge photograph of the widely shared rectangular iceberg, 16 October 2018. A real tabular iceberg, not an artificial structure.",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:874cb58bbe69aa893761",
          "role": "A second IceBridge view shows two angular tabular icebergs on 16 October 2018. Supporting photographic context for natural iceberg geometry.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/rectangular-iceberg-harbeck.jpg",
          "caption": "NASA IceBridge photograph of the widely shared rectangular iceberg, 16 October 2018. A real tabular iceberg, not an artificial structure. NASA/Jeremy Harbeck / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "Rectangular iceberg cut by aliens",
          "href": "theory-vault.html#ADD-A009"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A009",
        "input_record_sha256": "96e21776e91bdcfbc918af5dd6a16f6ef8723a578d707a37aa5e696c0925d93a",
        "original_fields": {
          "id": "ADD-A009",
          "title": "Rectangular iceberg cut by aliens",
          "claim": "Online interpretations attributed the sharp geometry of a 2018 iceberg image to artificial or alien cutting.",
          "category": "imagery interpretation",
          "status": "Natural feature misinterpreted",
          "counterevidence": "The photographed object is a tabular iceberg; sharp fracture edges need not be artificial.",
          "sources": [
            {
              "url": "https://www.youtube.com/watch?v=hOAwLwRZC7s",
              "role": "claim provenance and/or documented assessment"
            },
            {
              "url": "https://www.truthorfiction.com/about-that-perfectly-rectangular-iceberg/",
              "role": "assessment/context"
            },
            {
              "url": "https://bigthink.com/surprising-science/these-rectangular-icebergs-seem-cut-by-aliens-but-theyre-not/",
              "role": "explicit documentation and rejection of alien-cutting interpretation"
            },
            {
              "url": "https://www.nasa.gov/image-article/two-rectangular-icebergs-spotted-nasa-icebridge-flight/",
              "role": "NASA IceBridge photograph of the widely shared rectangular iceberg, 16 October 2018. A real tabular iceberg, not an artificial structure."
            },
            {
              "url": "https://www.nasa.gov/image-article/two-rectangular-icebergs-spotted-nasa-icebridge-flight/",
              "role": "A second IceBridge view shows two angular tabular icebergs on 16 October 2018. Supporting photographic context for natural iceberg geometry."
            }
          ],
          "limitations": [
            "Source calls the iceberg apparently finely cut; alien variants are documented in accompanying assessment."
          ],
          "claim_family": "Rectangular iceberg",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "Online interpretations attributed the sharp geometry of a 2018 iceberg image to artificial or alien cutting.",
          "supporting_images": [
            {
              "src": "thumbs/rectangular-iceberg-harbeck.jpg",
              "caption": "NASA IceBridge photograph of the widely shared rectangular iceberg, 16 October 2018. A real tabular iceberg, not an artificial structure. NASA/Jeremy Harbeck / Aspect-preserving resize only; no generative editing or cropping",
              "title": "NASA IceBridge photograph of the widely shared rectangular iceberg, 16 October 2018. A real tabular iceberg, not an artificial structure.",
              "source_url": "https://www.nasa.gov/image-article/two-rectangular-icebergs-spotted-nasa-icebridge-flight/",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            },
            {
              "src": "thumbs/two-rectangular-icebergs.jpg",
              "caption": "A second IceBridge view shows two angular tabular icebergs on 16 October 2018. Supporting photographic context for natural iceberg geometry. NASA/Jeremy Harbeck / Aspect-preserving resize only; no generative editing or cropping",
              "title": "A second IceBridge view shows two angular tabular icebergs on 16 October 2018. Supporting photographic context for natural iceberg geometry.",
              "source_url": "https://www.nasa.gov/image-article/two-rectangular-icebergs-spotted-nasa-icebridge-flight/",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "74f46699e4c6b7896b313707e8ebd94183eb8165a198ab7881892cab83b4842f"
    },
    {
      "id": "theory:ADD-A010",
      "legacy_id": "ADD-A010",
      "kind": "theory",
      "title": "Leviathan’s Gate cargo route",
      "url": "theory-vault.html#ADD-A010",
      "summary": "A 2025 conspiracy post alleged cargo vessels pass a hidden Antarctic ice-wall gate near the McDonald Islands.",
      "claim": "A 2025 conspiracy post alleged cargo vessels pass a hidden Antarctic ice-wall gate near the McDonald Islands.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "A social-media reading of vessel maps does not demonstrate a passage to outer lands. Heard and McDonald Islands are real sub-Antarctic islands.",
        "limitations": [
          "Related to existing outer-lands mythology but distinct alleged cargo-route proposition; sub-Antarctic location."
        ]
      },
      "sources": [
        {
          "source_id": "source:66895cb60a0d67b1a96d",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:ea9551e11ad918a304a6",
          "role": "assessment/context",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A010",
        "input_record_sha256": "2861d0626eab74b16780d561a2181ca6d422c18770f90d6ac4d24a7420db0e3a",
        "original_fields": {
          "id": "ADD-A010",
          "title": "Leviathan’s Gate cargo route",
          "claim": "A 2025 conspiracy post alleged cargo vessels pass a hidden Antarctic ice-wall gate near the McDonald Islands.",
          "category": "flat-earth narrative",
          "status": "Unsupported community allegation",
          "counterevidence": "A social-media reading of vessel maps does not demonstrate a passage to outer lands. Heard and McDonald Islands are real sub-Antarctic islands.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/1jucvh1",
              "role": "claim provenance and/or documented assessment"
            },
            {
              "url": "https://www.antarctica.gov.au/antarctic-operations/stations-and-field-locations/heard-island/",
              "role": "assessment/context"
            }
          ],
          "limitations": [
            "Related to existing outer-lands mythology but distinct alleged cargo-route proposition; sub-Antarctic location."
          ],
          "claim_family": "Ice-wall transport",
          "verification_date": "2026-10-28",
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A 2025 conspiracy post alleged cargo vessels pass a hidden Antarctic ice-wall gate near the McDonald Islands."
        }
      },
      "record_sha256": "a8819fc807166781bf2de7547095664dee89bba2a6a52417c2c51064bb9a7ee0"
    },
    {
      "id": "theory:ADD-A011",
      "legacy_id": "ADD-A011",
      "kind": "theory",
      "title": "Kerry petitioned Antarctic rulers over the 2016 election",
      "url": "theory-vault.html#ADD-A011",
      "summary": "A community post alleged John Kerry’s Antarctic visit was to seek a different US election outcome from hidden authorities.",
      "claim": "A community post alleged John Kerry’s Antarctic visit was to seek a different US election outcome from hidden authorities.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The post supplies no corroboration of such a meeting or of authorities empowered to award an election.",
        "limitations": [
          "Source is hearsay; different from the existing 2021 cabal-surrender narrative."
        ]
      },
      "sources": [
        {
          "source_id": "source:b049f482ac81353bfd47",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A011",
        "input_record_sha256": "6963aba3354f5349ace2f6196d35edab2062d5d381c21124fbdbcd10af35cc72",
        "original_fields": {
          "id": "ADD-A011",
          "title": "Kerry petitioned Antarctic rulers over the 2016 election",
          "claim": "A community post alleged John Kerry’s Antarctic visit was to seek a different US election outcome from hidden authorities.",
          "category": "political conspiracy",
          "status": "Unsupported community allegation",
          "counterevidence": "The post supplies no corroboration of such a meeting or of authorities empowered to award an election.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/cx2jrk",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "Source is hearsay; different from the existing 2021 cabal-surrender narrative."
          ],
          "claim_family": "Elite Antarctic visits",
          "verification_date": "2026-10-28",
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A community post alleged John Kerry’s Antarctic visit was to seek a different US election outcome from hidden authorities."
        }
      },
      "record_sha256": "c43d3b9da3a4d209f54f5eb4fe2e29bd843dd694e901722ce01e83b99882df44"
    },
    {
      "id": "theory:ADD-A012",
      "legacy_id": "ADD-A012",
      "kind": "theory",
      "title": "Russia first broke the Antarctic Treaty claim",
      "url": "theory-vault.html#ADD-A012",
      "summary": "A circulating 2022 video claimed Russia had become the first nation to break the Antarctic Treaty.",
      "claim": "A circulating 2022 video claimed Russia had become the first nation to break the Antarctic Treaty.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Lead Stories found no supporting evidence for the announced breach; the post’s suggestion should not be treated as an established treaty event.",
        "limitations": [
          "Historical claim assessment, not legal advice; separate from the existing Russian civilization-announcement hoax."
        ]
      },
      "sources": [
        {
          "source_id": "source:1690a9e4ff4684209161",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A012",
        "input_record_sha256": "243244d8599348ff8dda79140de91496bec2115f1000f45b597ae61d65d2b0e7",
        "original_fields": {
          "id": "ADD-A012",
          "title": "Russia first broke the Antarctic Treaty claim",
          "claim": "A circulating 2022 video claimed Russia had become the first nation to break the Antarctic Treaty.",
          "category": "geopolitical misinformation",
          "status": "Unsupported viral claim",
          "counterevidence": "Lead Stories found no supporting evidence for the announced breach; the post’s suggestion should not be treated as an established treaty event.",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2022/11/fact-check-no-evidence-that-russia-is-the-first-country-to-break-the-antarctic-treaty.html",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "Historical claim assessment, not legal advice; separate from the existing Russian civilization-announcement hoax."
          ],
          "claim_family": "Treaty breach rumour",
          "verification_date": "2026-10-28",
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A circulating 2022 video claimed Russia had become the first nation to break the Antarctic Treaty."
        }
      },
      "record_sha256": "3c6f786106e7cd4816a715794437ee91b4d630e56921eca11a905e85d1cb94ee"
    },
    {
      "id": "theory:ADD-A013",
      "legacy_id": "ADD-A013",
      "kind": "theory",
      "title": "Shackleton’s hazardous-journey recruitment advertisement",
      "url": "theory-vault.html#ADD-A013",
      "summary": "A famous short advertisement is attributed to Shackleton’s expedition recruiting.",
      "claim": "A famous short advertisement is attributed to Shackleton’s expedition recruiting.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Archival searches have not located an original newspaper advertisement; modern reproductions do not prove publication.",
        "limitations": [
          "A documented historical legend, not a conspiracy or geographic theory."
        ]
      },
      "sources": [
        {
          "source_id": "source:d07e4dcb3934ff803ef5",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A013",
        "input_record_sha256": "289e5ee6e3f37b10e9f9ad671a3bea9217ac2f835ed3080df6f63c81a3d87dd2",
        "original_fields": {
          "id": "ADD-A013",
          "title": "Shackleton’s hazardous-journey recruitment advertisement",
          "claim": "A famous short advertisement is attributed to Shackleton’s expedition recruiting.",
          "category": "historical legend",
          "status": "Probably apocryphal",
          "counterevidence": "Archival searches have not located an original newspaper advertisement; modern reproductions do not prove publication.",
          "sources": [
            {
              "url": "https://discerninghistory.com/2013/05/shackletons-ad-men-wanted-for-hazerdous-journey/",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "A documented historical legend, not a conspiracy or geographic theory."
          ],
          "claim_family": "Recruitment advert",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A famous short advertisement is attributed to Shackleton’s expedition recruiting."
        }
      },
      "record_sha256": "b3632a2cc082f3cd3987056f1ec80b0b961ff6ef221a52c12b211681756b5239"
    },
    {
      "id": "theory:ADD-A014",
      "legacy_id": "ADD-A014",
      "kind": "theory",
      "title": "Tin pest destroyed Scott’s fuel-can solder",
      "url": "theory-vault.html#ADD-A014",
      "summary": "The popular explanation holds that low-temperature tin transformation caused fuel leaks during Scott’s polar journey.",
      "claim": "The popular explanation holds that low-temperature tin transformation caused fuel leaks during Scott’s polar journey.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "A National Museum of Australia conservator reported contrary artifact observations and discussed faulty soldering instead.",
        "limitations": [
          "Tin pest is a real phenomenon; its causal role in this expedition is not established."
        ]
      },
      "sources": [
        {
          "source_id": "source:55e2d53af743165da7da",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A014",
        "input_record_sha256": "0d7a51f06e7194b8329500c0cde2c061d2e269250e1665bfefe9c85b33060755",
        "original_fields": {
          "id": "ADD-A014",
          "title": "Tin pest destroyed Scott’s fuel-can solder",
          "claim": "The popular explanation holds that low-temperature tin transformation caused fuel leaks during Scott’s polar journey.",
          "category": "historical materials hypothesis",
          "status": "Disputed explanation",
          "counterevidence": "A National Museum of Australia conservator reported contrary artifact observations and discussed faulty soldering instead.",
          "sources": [
            {
              "url": "https://cool.culturalheritage.org/byform/mailing-lists/cdl/1998/1292.html",
              "role": "claim provenance and/or documented assessment"
            }
          ],
          "limitations": [
            "Tin pest is a real phenomenon; its causal role in this expedition is not established."
          ],
          "claim_family": "Scott fuel loss",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The popular explanation holds that low-temperature tin transformation caused fuel leaks during Scott’s polar journey."
        }
      },
      "record_sha256": "9ebe77a1630747150899dcfe7997063364bf0446333a406e8936ded0f8a8bc37"
    },
    {
      "id": "theory:ADD-A015",
      "legacy_id": "ADD-A015",
      "kind": "theory",
      "title": "No genuine Antarctic photographs from space",
      "url": "theory-vault.html#ADD-A015",
      "summary": "A community post claimed no authentic orbital photographs of Antarctica exist.",
      "claim": "A community post claimed no authentic orbital photographs of Antarctica exist.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "NASA and other public satellite programs publish Antarctic imagery; incomplete coverage or mosaicking is not absence of orbital observations.",
        "limitations": [
          "Do not conflate raw scenes, processed mosaics and whole-Earth photographs."
        ]
      },
      "sources": [
        {
          "source_id": "source:c8208b145d0df487462e",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:b323e98886224cc0ec00",
          "role": "primary satellite program counterevidence",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:908b6ad153d1ec85d52c",
          "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/modis-antarctic-coasts.jpg",
          "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "No genuine Antarctic photographs from space",
          "href": "theory-vault.html#ADD-A015"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A015",
        "input_record_sha256": "b3854a1e0c4d7645c6fa44a28385ce8185bdfc4c3eaf2f4ab0ca609987d9a28f",
        "original_fields": {
          "id": "ADD-A015",
          "title": "No genuine Antarctic photographs from space",
          "claim": "A community post claimed no authentic orbital photographs of Antarctica exist.",
          "category": "imagery misinformation",
          "status": "False blanket claim",
          "counterevidence": "NASA and other public satellite programs publish Antarctic imagery; incomplete coverage or mosaicking is not absence of orbital observations.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/12lbflg",
              "role": "claim provenance and/or documented assessment"
            },
            {
              "url": "https://science.gsfc.nasa.gov/earth/cryosphere/projects/99/",
              "role": "primary satellite program counterevidence"
            },
            {
              "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents."
            }
          ],
          "limitations": [
            "Do not conflate raw scenes, processed mosaics and whole-Earth photographs."
          ],
          "claim_family": "Satellite-image denial",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A community post claimed no authentic orbital photographs of Antarctica exist.",
          "supporting_images": [
            {
              "src": "thumbs/modis-antarctic-coasts.jpg",
              "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping",
              "title": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
              "source_url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "d83e9df4d2b93e3e4ffcba91999936b8034778277fe64044cfe27f4aedc96e7b"
    },
    {
      "id": "theory:ADD-B001",
      "legacy_id": "ADD-B001",
      "kind": "theory",
      "title": "MH370 remotely diverted to Antarctica",
      "url": "theory-vault.html#ADD-B001",
      "summary": "Norman Davies proposed that remotely hijacked MH370 might have ended beneath Antarctic snow.",
      "claim": "Norman Davies proposed that remotely hijacked MH370 might have ended beneath Antarctic snow.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "An attributed proposal is not evidence of an Antarctic aircraft location; no authenticated wreck discovery accompanies it.",
        "limitations": [
          "Reported in connection with Davies’s Beneath Another Sky; no conclusion about the actual disappearance is implied."
        ]
      },
      "sources": [
        {
          "source_id": "source:df785c71151baf79b540",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B001",
        "input_record_sha256": "7fdd41cc0ea82b661244925b9e2caab0ea91be56d6cf1b6aea91f656aa025b0a",
        "original_fields": {
          "id": "ADD-B001",
          "title": "MH370 remotely diverted to Antarctica",
          "claim": "Norman Davies proposed that remotely hijacked MH370 might have ended beneath Antarctic snow.",
          "category": "aviation conspiracy",
          "status": "Unsupported speculation",
          "counterevidence": "An attributed proposal is not evidence of an Antarctic aircraft location; no authenticated wreck discovery accompanies it.",
          "sources": [
            {
              "url": "https://www.nieuwsblad.be/buitenland/nieuwe-theorie-over-vermiste-mh370-mogelijk-het-eerste-vliegtuig-dat-vanop-afstand-werd-gekaapt/59434398.html",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "Reported in connection with Davies’s Beneath Another Sky; no conclusion about the actual disappearance is implied."
          ],
          "claim_family": "MH370 Antarctic diversion",
          "verification_date": "2026-10-28",
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Norman Davies proposed that remotely hijacked MH370 might have ended beneath Antarctic snow."
        }
      },
      "record_sha256": "b3c327aa7fbf0f1d6f7ee0a18ee27e1384ac60a22aefffe6437dd4b32ed43524"
    },
    {
      "id": "theory:ADD-B002",
      "legacy_id": "ADD-B002",
      "kind": "theory",
      "title": "Antarctica hosts the exit from a nexus simulation",
      "url": "theory-vault.html#ADD-B002",
      "summary": "A discussion of a purported 4chan text interpreted Antarctica as a doorway to an alien-AI simulation nexus.",
      "claim": "A discussion of a purported 4chan text interpreted Antarctica as a doorway to an alien-AI simulation nexus.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No reproducible mechanism or authenticated location is supplied; discussion is not verification.",
        "limitations": [
          "Origin chain is incomplete; may include speculative or generated commentary. Do not label an established community doctrine."
        ]
      },
      "sources": [
        {
          "source_id": "source:def15b8452990a5b1c38",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B002",
        "input_record_sha256": "ea9052e1155d72b45522a048ed14caef8f7846e84156f10d9bcfdebc2451fc3e",
        "original_fields": {
          "id": "ADD-B002",
          "title": "Antarctica hosts the exit from a nexus simulation",
          "claim": "A discussion of a purported 4chan text interpreted Antarctica as a doorway to an alien-AI simulation nexus.",
          "category": "simulation lore",
          "status": "Anonymous internet speculation",
          "counterevidence": "No reproducible mechanism or authenticated location is supplied; discussion is not verification.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracytheories/comments/x4q72q",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "Origin chain is incomplete; may include speculative or generated commentary. Do not label an established community doctrine."
          ],
          "claim_family": "Nexus simulation",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "A discussion of a purported 4chan text interpreted Antarctica as a doorway to an alien-AI simulation nexus."
        }
      },
      "record_sha256": "6fa48106821e8c3280b99686d7a4e965ae33335312851d79491bd316e8c6705e"
    },
    {
      "id": "theory:ADD-B003",
      "legacy_id": "ADD-B003",
      "kind": "theory",
      "title": "Astral barrier surrounding Antarctica",
      "url": "theory-vault.html#ADD-B003",
      "summary": "Astral-projection discussions describe an alleged barrier preventing psychic access to Antarctica.",
      "claim": "Astral-projection discussions describe an alleged barrier preventing psychic access to Antarctica.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Personal impressions or dreams do not establish a geographical barrier or its cause.",
        "limitations": [
          "An experiential belief claim, not a demonstration of psychic travel."
        ]
      },
      "sources": [
        {
          "source_id": "source:a0fd5e94ed18f6711dcf",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B003",
        "input_record_sha256": "df4e2e1ce22c283bd1fefad729d17235a030629b44b5a63c9846d6a4a5fa2be5",
        "original_fields": {
          "id": "ADD-B003",
          "title": "Astral barrier surrounding Antarctica",
          "claim": "Astral-projection discussions describe an alleged barrier preventing psychic access to Antarctica.",
          "category": "occult interpretation",
          "status": "Unverified subjective narrative",
          "counterevidence": "Personal impressions or dreams do not establish a geographical barrier or its cause.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/AstralProjection/comments/e996yo/antarctica_seems_impenetrable/",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "An experiential belief claim, not a demonstration of psychic travel."
          ],
          "claim_family": "Astral barrier",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "Astral-projection discussions describe an alleged barrier preventing psychic access to Antarctica."
        }
      },
      "record_sha256": "6fbfa040aa58dfded621059e06864fe38ee7df3ab8f80e721031073a7f32e093"
    },
    {
      "id": "theory:ADD-B004",
      "legacy_id": "ADD-B004",
      "kind": "theory",
      "title": "Thoth’s Antarctic grid pyramid",
      "url": "theory-vault.html#ADD-B004",
      "summary": "A spiritual text places the first of twelve metaphysical pyramids over Antarctica as an interplanetary grid portal.",
      "claim": "A spiritual text places the first of twelve metaphysical pyramids over Antarctica as an interplanetary grid portal.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "An asserted energetic structure is not a surveyed physical pyramid or a verified portal.",
        "limitations": [
          "Distinct from the satellite-mountain pyramid claim; do not represent this as an ancient Antarctic tradition."
        ]
      },
      "sources": [
        {
          "source_id": "source:c2345e1553edfe1a8fdc",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B004",
        "input_record_sha256": "305d11e2886934e55443baa21503de60e4e18c135733aeb93cb97d1d9c3adebf",
        "original_fields": {
          "id": "ADD-B004",
          "title": "Thoth’s Antarctic grid pyramid",
          "claim": "A spiritual text places the first of twelve metaphysical pyramids over Antarctica as an interplanetary grid portal.",
          "category": "channelled cosmology",
          "status": "Spiritual narrative, not archaeological evidence",
          "counterevidence": "An asserted energetic structure is not a surveyed physical pyramid or a verified portal.",
          "sources": [
            {
              "url": "https://www.ashtarcommandcrew.net/forum/topics/the-12-pyramids-of-thoth",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "Distinct from the satellite-mountain pyramid claim; do not represent this as an ancient Antarctic tradition."
          ],
          "claim_family": "Thoth grid",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "A spiritual text places the first of twelve metaphysical pyramids over Antarctica as an interplanetary grid portal."
        }
      },
      "record_sha256": "ba06e78fed4b867d72a4d6f2af3b044bac535e6bd4a3b0544c8e5a452e37afcc"
    },
    {
      "id": "theory:ADD-B005",
      "legacy_id": "ADD-B005",
      "kind": "theory",
      "title": "Antarctic plasmasaur attacks",
      "url": "theory-vault.html#ADD-B005",
      "summary": "Stories attributed to Yuri Korshunov describe shape-changing luminous entities killing Soviet expedition members in 1959, with later recurrence.",
      "claim": "Stories attributed to Yuri Korshunov describe shape-changing luminous entities killing Soviet expedition members in 1959, with later recurrence.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The retelling does not authenticate expedition rosters, deaths or physical evidence; real plasma phenomena do not verify organisms.",
        "limitations": [
          "Combined alleged encounters as one legend, not multiple records. Different from alleged ocean-plasmoid communication installations."
        ]
      },
      "sources": [
        {
          "source_id": "source:1635b3fef2c5c47b547c",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B005",
        "input_record_sha256": "45c0077648c6dd4e73b69b160d9fc33ffc380ed9ca5f1653a5d02f948e30e3e3",
        "original_fields": {
          "id": "ADD-B005",
          "title": "Antarctic plasmasaur attacks",
          "claim": "Stories attributed to Yuri Korshunov describe shape-changing luminous entities killing Soviet expedition members in 1959, with later recurrence.",
          "category": "cryptid folklore",
          "status": "Unverified expedition legend",
          "counterevidence": "The retelling does not authenticate expedition rosters, deaths or physical evidence; real plasma phenomena do not verify organisms.",
          "sources": [
            {
              "url": "https://www.creepynautas.com/expedientes/plasmasaurios-antartida",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "Combined alleged encounters as one legend, not multiple records. Different from alleged ocean-plasmoid communication installations."
          ],
          "claim_family": "Plasmasaur legend",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Stories attributed to Yuri Korshunov describe shape-changing luminous entities killing Soviet expedition members in 1959, with later recurrence."
        }
      },
      "record_sha256": "9ec93f8817513887bbcb4a7fcd17465e069f8e3ce14c3b166fa64c89c307041a"
    },
    {
      "id": "theory:ADD-B006",
      "legacy_id": "ADD-B006",
      "kind": "theory",
      "title": "Apollo rocks gathered in Antarctica instead of the Moon",
      "url": "theory-vault.html#ADD-B006",
      "summary": "Moon-hoax advocates reinterpret von Braun’s Antarctic visit as a search for meteorites to pass off as Apollo samples.",
      "claim": "Moon-hoax advocates reinterpret von Braun’s Antarctic visit as a search for meteorites to pass off as Apollo samples.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The linked historical assessment distinguishes Antarctic meteorite discovery chronology and Apollo sample evidence from the allegation.",
        "limitations": [
          "One claim includes the von Braun trip; do not split trip and meteorite-substitution aliases."
        ]
      },
      "sources": [
        {
          "source_id": "source:0af575398f29a2a48483",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B006",
        "input_record_sha256": "670551e65587cc22543fa2a07640f562a487c75b2187e0d3ba39a0a90fc35d60",
        "original_fields": {
          "id": "ADD-B006",
          "title": "Apollo rocks gathered in Antarctica instead of the Moon",
          "claim": "Moon-hoax advocates reinterpret von Braun’s Antarctic visit as a search for meteorites to pass off as Apollo samples.",
          "category": "space-program conspiracy",
          "status": "Unsupported; contradicted by sample history",
          "counterevidence": "The linked historical assessment distinguishes Antarctic meteorite discovery chronology and Apollo sample evidence from the allegation.",
          "sources": [
            {
              "url": "https://www.paesta.org/sites/default/files/digital_library/denying-apollo-moon-landings.pdf",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "One claim includes the von Braun trip; do not split trip and meteorite-substitution aliases."
          ],
          "claim_family": "Apollo meteorite substitution",
          "verification_date": "2026-10-28",
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Moon-hoax advocates reinterpret von Braun’s Antarctic visit as a search for meteorites to pass off as Apollo samples."
        }
      },
      "record_sha256": "dd41d884271ca6ccd75534c018be3d1f8e3b213c5abe2d42a8aedd9578ea5a91"
    },
    {
      "id": "theory:ADD-B007",
      "legacy_id": "ADD-B007",
      "kind": "theory",
      "title": "WikiLeaks Antarctic photographs concealed a UFO war",
      "url": "theory-vault.html#ADD-B007",
      "summary": "A 2017 article linked Antarctic photographs, alleged removals and elite visits to a concealed conflict with UFOs.",
      "claim": "A 2017 article linked Antarctic photographs, alleged removals and elite visits to a concealed conflict with UFOs.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The article offers associations, not an authenticated record of a UFO conflict. Ordinary leaked travel imagery would not establish it.",
        "limitations": [
          "Do not assert photographs were actually removed or verified as UFO images; those are part of the source’s claims."
        ]
      },
      "sources": [
        {
          "source_id": "source:5f0e7a167449c75a08e7",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B007",
        "input_record_sha256": "6b0a1a9f26641582ea8d8b32b6af9e3aade579e7a23370b0a346758b8d340eb1",
        "original_fields": {
          "id": "ADD-B007",
          "title": "WikiLeaks Antarctic photographs concealed a UFO war",
          "claim": "A 2017 article linked Antarctic photographs, alleged removals and elite visits to a concealed conflict with UFOs.",
          "category": "leak interpretation",
          "status": "Unsupported speculative inference",
          "counterevidence": "The article offers associations, not an authenticated record of a UFO conflict. Ordinary leaked travel imagery would not establish it.",
          "sources": [
            {
              "url": "https://www.inquisitr.com/ufo-theory-new-facts-bring-questions-about-legitimacy-of-antarctica-rumors/",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "Do not assert photographs were actually removed or verified as UFO images; those are part of the source’s claims."
          ],
          "claim_family": "WikiLeaks Antarctic conflict",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A 2017 article linked Antarctic photographs, alleged removals and elite visits to a concealed conflict with UFOs."
        }
      },
      "record_sha256": "869ef40971614a888d7fae8cd39a00e004f298fe84f7b9e008e9e70afb2081bf"
    },
    {
      "id": "theory:ADD-B008",
      "legacy_id": "ADD-B008",
      "kind": "theory",
      "title": "Saturn-era Antarctica before a recent solar capture",
      "url": "theory-vault.html#ADD-B008",
      "summary": "A conspiracy-thread comment claims Antarctica was habitable while Earth orbited Saturn, before recent capture by the Sun.",
      "claim": "A conspiracy-thread comment claims Antarctica was habitable while Earth orbited Saturn, before recent capture by the Sun.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The comment supplies no geological or orbital evidence for that chronology; it is not accepted planetary history.",
        "limitations": [
          "A documented individual assertion tying a wider Saturn cosmology to Antarctic pyramids; not independent corroboration of pyramids."
        ]
      },
      "sources": [
        {
          "source_id": "source:d1335e95da6a186d511e",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B008",
        "input_record_sha256": "f3e3155cdb2f4f1c541b5c4e0e9fb4ef46229df4b2587478563707729bb63e45",
        "original_fields": {
          "id": "ADD-B008",
          "title": "Saturn-era Antarctica before a recent solar capture",
          "claim": "A conspiracy-thread comment claims Antarctica was habitable while Earth orbited Saturn, before recent capture by the Sun.",
          "category": "alternative cosmology",
          "status": "Unsupported community assertion",
          "counterevidence": "The comment supplies no geological or orbital evidence for that chronology; it is not accepted planetary history.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/1wwewyz/antarctica_conspiracy_theories_please_share_what/",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "A documented individual assertion tying a wider Saturn cosmology to Antarctic pyramids; not independent corroboration of pyramids."
          ],
          "claim_family": "Saturn polar cosmology",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "A conspiracy-thread comment claims Antarctica was habitable while Earth orbited Saturn, before recent capture by the Sun."
        }
      },
      "record_sha256": "f6f42143b6444a22460a44c40c073461da5d01a29f53690f7175b0cd9dc7f9c7"
    },
    {
      "id": "theory:ADD-B009",
      "legacy_id": "ADD-B009",
      "kind": "theory",
      "title": "Antarctic separation caused by an attack on Earth",
      "url": "theory-vault.html#ADD-B009",
      "summary": "A community comment attributes Antarctica’s separation from South America and freezing to an attack or impact against Earth.",
      "claim": "A community comment attributes Antarctica’s separation from South America and freezing to an attack or impact against Earth.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The comment provides no dating, crater evidence or physical mechanism sufficient to establish the proposed event.",
        "limitations": [
          "Recorded as one specific proposed origin, not generic ancient civilization lore."
        ]
      },
      "sources": [
        {
          "source_id": "source:d1335e95da6a186d511e",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B009",
        "input_record_sha256": "ead8895b90b99395949fc2b012c66d714bb560a06a774fd2c075b860dfe56da9",
        "original_fields": {
          "id": "ADD-B009",
          "title": "Antarctic separation caused by an attack on Earth",
          "claim": "A community comment attributes Antarctica’s separation from South America and freezing to an attack or impact against Earth.",
          "category": "alternative geological history",
          "status": "Unsupported community assertion",
          "counterevidence": "The comment provides no dating, crater evidence or physical mechanism sufficient to establish the proposed event.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/1wwewyz/antarctica_conspiracy_theories_please_share_what/",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "Recorded as one specific proposed origin, not generic ancient civilization lore."
          ],
          "claim_family": "Attack separation narrative",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A community comment attributes Antarctica’s separation from South America and freezing to an attack or impact against Earth."
        }
      },
      "record_sha256": "311aeafc4bd6914c0dcaed44c0cc0d7428049fce2e765227b84b78020f69f5a4"
    },
    {
      "id": "theory:ADD-B010",
      "legacy_id": "ADD-B010",
      "kind": "theory",
      "title": "Musk publicly disclosed an Antarctic alien coverup",
      "url": "theory-vault.html#ADD-B010",
      "summary": "Online video titles and descriptions attribute Antarctic alien disclosure to Elon Musk.",
      "claim": "Online video titles and descriptions attribute Antarctic alien disclosure to Elon Musk.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The video description provides no authenticated primary statement establishing such a disclosure.",
        "limitations": [
          "Existence of a video is not evidence Musk made the claimed statement; no accusation of his participation is endorsed."
        ]
      },
      "sources": [
        {
          "source_id": "source:7d5ac46471233ef10f5d",
          "role": "claim provenance or documented historical assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-B010",
        "input_record_sha256": "b5c1655ab5035d91a74e5992d6cce30dcc2f0215d8fccdf4a6d7dd2bfde8999e",
        "original_fields": {
          "id": "ADD-B010",
          "title": "Musk publicly disclosed an Antarctic alien coverup",
          "claim": "Online video titles and descriptions attribute Antarctic alien disclosure to Elon Musk.",
          "category": "celebrity-attribution rumour",
          "status": "Unverified attribution",
          "counterevidence": "The video description provides no authenticated primary statement establishing such a disclosure.",
          "sources": [
            {
              "url": "https://www.youtube.com/watch?v=-M4r1lpqQn8",
              "role": "claim provenance or documented historical assessment"
            }
          ],
          "limitations": [
            "Existence of a video is not evidence Musk made the claimed statement; no accusation of his participation is endorsed."
          ],
          "claim_family": "Musk disclosure attribution",
          "verification_date": "2026-10-28",
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "Online video titles and descriptions attribute Antarctic alien disclosure to Elon Musk."
        }
      },
      "record_sha256": "3006dc554709e69398d2bb5dc78fea639ea85977149a2bd28a645ac3f6a1d891"
    },
    {
      "id": "theory:ADD-C001",
      "legacy_id": "ADD-C001",
      "kind": "theory",
      "title": "Polynesian peoples originated in Antarctica",
      "url": "theory-vault.html#ADD-C001",
      "summary": "Robert Argod’s Out of Antarctica proposes an Antarctic ancestral homeland for Polynesian peoples, interpreting migration myths and maritime knowledge.",
      "claim": "Robert Argod’s Out of Antarctica proposes an Antarctic ancestral homeland for Polynesian peoples, interpreting migration myths and maritime knowledge.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Genetic studies trace Polynesian ancestry through Asian and Oceanian populations; a book’s interpretation of myths is not archaeological evidence of an Antarctic homeland.",
        "limitations": [
          "Opposite migration direction from the separate claim that Polynesian navigators reached Antarctica; do not describe this modern hypothesis as an established Indigenous tradition."
        ]
      },
      "sources": [
        {
          "source_id": "source:b28fbaeeaadec817efa7",
          "role": "claim provenance",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:2f087819152d9da9b131",
          "role": "assessment or corroborating documentation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-C001",
        "input_record_sha256": "888feca19ca097fa1959b100c5873be023c43da0193fc8a9e0c349d06c670fd7",
        "original_fields": {
          "id": "ADD-C001",
          "title": "Polynesian peoples originated in Antarctica",
          "claim": "Robert Argod’s Out of Antarctica proposes an Antarctic ancestral homeland for Polynesian peoples, interpreting migration myths and maritime knowledge.",
          "category": "alternative prehistory",
          "status": "Unsupported historical hypothesis",
          "counterevidence": "Genetic studies trace Polynesian ancestry through Asian and Oceanian populations; a book’s interpretation of myths is not archaeological evidence of an Antarctic homeland.",
          "sources": [
            {
              "url": "https://books.google.com/books/about/Out_of_Antarctica.html?id=rzgcPwAACAAJ",
              "role": "claim provenance"
            },
            {
              "url": "https://pubmed.ncbi.nlm.nih.gov/27698418/",
              "role": "assessment or corroborating documentation"
            }
          ],
          "limitations": [
            "Opposite migration direction from the separate claim that Polynesian navigators reached Antarctica; do not describe this modern hypothesis as an established Indigenous tradition."
          ],
          "claim_family": "polynesian-antarctic-origin",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Robert Argod’s Out of Antarctica proposes an Antarctic ancestral homeland for Polynesian peoples, interpreting migration myths and maritime knowledge."
        }
      },
      "record_sha256": "6e5ff0f7be42276129a39a50c03b417ac315373e9c1767a7f397aa57d411c7ff"
    },
    {
      "id": "theory:ADD-C002",
      "legacy_id": "ADD-C002",
      "kind": "theory",
      "title": "Antarctic ice sheets formed within 4,500 years",
      "url": "theory-vault.html#ADD-C002",
      "summary": "Michael J. Oard argues that Antarctic ice-sheet formation can fit a young-Earth, post-Flood chronology.",
      "claim": "Michael J. Oard argues that Antarctic ice-sheet formation can fit a young-Earth, post-Flood chronology.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "EPICA ice-core research reconstructs hundreds of thousands of years, incompatible with this proposed recent formation timescale.",
        "limitations": [
          "Describes a specific empirical chronology claim, not a judgment on religious belief generally."
        ]
      },
      "sources": [
        {
          "source_id": "source:63dd277f76ad07e9361d",
          "role": "claim provenance",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:bb75fe09f07f383483e0",
          "role": "assessment or corroborating documentation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-C002",
        "input_record_sha256": "b67bee815c94f340f449824233e9cc7155d9ad29d3e1b79cb263b8b7bb99d9fb",
        "original_fields": {
          "id": "ADD-C002",
          "title": "Antarctic ice sheets formed within 4,500 years",
          "claim": "Michael J. Oard argues that Antarctic ice-sheet formation can fit a young-Earth, post-Flood chronology.",
          "category": "religious chronology",
          "status": "Contradicted by ice-core chronology",
          "counterevidence": "EPICA ice-core research reconstructs hundreds of thousands of years, incompatible with this proposed recent formation timescale.",
          "sources": [
            {
              "url": "https://www.icr.org/i/pdf/imp/imp-361.pdf",
              "role": "claim provenance"
            },
            {
              "url": "https://www.lsce.ipsl.fr/en/the-aicc2023-chronological-framework-and-associated-timescale-for-the-epica-dome-c-ice-core/",
              "role": "assessment or corroborating documentation"
            }
          ],
          "limitations": [
            "Describes a specific empirical chronology claim, not a judgment on religious belief generally."
          ],
          "claim_family": "young-earth-antarctic-ice",
          "verification_date": "2026-10-28",
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Michael J. Oard argues that Antarctic ice-sheet formation can fit a young-Earth, post-Flood chronology."
        }
      },
      "record_sha256": "52db9a71d5c5c2e36c5f8856961989083c464826be9f2e46875d2e36256cb35b"
    },
    {
      "id": "theory:ADD-C003",
      "legacy_id": "ADD-C003",
      "kind": "theory",
      "title": "Lost Byrd photographs show ancient monuments",
      "url": "theory-vault.html#ADD-C003",
      "summary": "Images circulated as secret expedition photographs supposedly showing Antarctic statues, temples and other ancient monuments.",
      "claim": "Images circulated as secret expedition photographs supposedly showing Antarctic statues, temples and other ancient monuments.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Creator Tim Boucher told France 24 the pictures were generated with DALL-E; the book contained an AI disclaimer.",
        "limitations": [
          "The false evidentiary claim belongs to misleading circulation; do not claim the creator presented authentic photographs. One image-series case, not one record per pictured monument."
        ]
      },
      "sources": [
        {
          "source_id": "source:f7634798cf330f072c9c",
          "role": "claim provenance",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:44aa9a7c60448b10e2b6",
          "role": "assessment or corroborating documentation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-C003",
        "input_record_sha256": "7f5245f6cda59bc3cb65e88231dc39112e2d0c70389d0d736928e53ef3b1f423",
        "original_fields": {
          "id": "ADD-C003",
          "title": "Lost Byrd photographs show ancient monuments",
          "claim": "Images circulated as secret expedition photographs supposedly showing Antarctic statues, temples and other ancient monuments.",
          "category": "AI hoax and synthetic media",
          "status": "AI-generated artwork misrepresented as evidence",
          "counterevidence": "Creator Tim Boucher told France 24 the pictures were generated with DALL-E; the book contained an AI disclaimer.",
          "sources": [
            {
              "url": "https://www.inkl.com/news/are-there-ruins-of-a-lost-civilisation-in-antarctica-no-turns-out-these-images-are-fake",
              "role": "claim provenance"
            },
            {
              "url": "https://lostbooks.medium.com/ai-generated-pyramids-in-antarctica-stir-fresh-debate-on-misinformation-in-tech-bfb0f65c1e8f",
              "role": "assessment or corroborating documentation"
            }
          ],
          "limitations": [
            "The false evidentiary claim belongs to misleading circulation; do not claim the creator presented authentic photographs. One image-series case, not one record per pictured monument."
          ],
          "claim_family": "boucher-lost-byrd-monuments",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Images circulated as secret expedition photographs supposedly showing Antarctic statues, temples and other ancient monuments."
        }
      },
      "record_sha256": "570d195caef15c9360e00429022dee52e424051aceff969d19302f0a71550619"
    },
    {
      "id": "theory:ADD-C004",
      "legacy_id": "ADD-C004",
      "kind": "theory",
      "title": "Frozen unknown creatures discovered in 2024 video",
      "url": "theory-vault.html#ADD-C004",
      "summary": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice.",
      "claim": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Teyit traced the video to an account identifying its AI production and documented visual artifacts; it is not verified discovery footage.",
        "limitations": [
          "One specific viral video case; the different depicted creatures are not independently counted cryptids."
        ]
      },
      "sources": [
        {
          "source_id": "source:3544f98c213bfe96c822",
          "role": "claim provenance",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:cc9f7ffe644fe258ce6c",
          "role": "assessment or corroborating documentation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-C004",
        "input_record_sha256": "003ef185231fecdf9651a86e6705148c9da0c70d2332f033a9fbceb8af30bdf8",
        "original_fields": {
          "id": "ADD-C004",
          "title": "Frozen unknown creatures discovered in 2024 video",
          "claim": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice.",
          "category": "AI hoax and synthetic media",
          "status": "AI-generated video",
          "counterevidence": "Teyit traced the video to an account identifying its AI production and documented visual artifacts; it is not verified discovery footage.",
          "sources": [
            {
              "url": "https://teyit.org/analiz/antarktikada-donmus-canlilari-gosteren-video-gercek-mi",
              "role": "claim provenance"
            },
            {
              "url": "https://www.dogrulukpayi.com/dogruluk-kontrolu/video-antarktika-da-donmus-halde-bulunan-canlilarin-kesfedildigini-mi-gosteriyor",
              "role": "assessment or corroborating documentation"
            }
          ],
          "limitations": [
            "One specific viral video case; the different depicted creatures are not independently counted cryptids."
          ],
          "claim_family": "frozen-creatures-ai-video-2024",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice."
        }
      },
      "record_sha256": "64ad2a031aca07509960e82653da2fcb00158b251158950da480214c7632b143"
    },
    {
      "id": "theory:ADD-C005",
      "legacy_id": "ADD-C005",
      "kind": "theory",
      "title": "A 400-foot ship is concealed in Antarctic ice",
      "url": "theory-vault.html#ADD-C005",
      "summary": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship.",
      "claim": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The reporting documents a shape-based interpretation, not an inspected vessel or authenticated wreck discovery. Resemblance in remote imagery alone cannot establish a ship.",
        "limitations": [
          "Preserves the original claim’s approximate size; no coordinate-level geological verification performed. Distinct from the South Georgia crash-track UFO."
        ]
      },
      "sources": [
        {
          "source_id": "source:80147c1f66e78752ea72",
          "role": "claim provenance",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:2bfc2f8ac1f553779521",
          "role": "assessment or corroborating documentation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-C005",
        "input_record_sha256": "4bb636ac77cf76a66e958582e83c9062db5e0545e400d1b6de013a2a7a211240",
        "original_fields": {
          "id": "ADD-C005",
          "title": "A 400-foot ship is concealed in Antarctic ice",
          "claim": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship.",
          "category": "satellite-image interpretation",
          "status": "Unverified visual interpretation",
          "counterevidence": "The reporting documents a shape-based interpretation, not an inspected vessel or authenticated wreck discovery. Resemblance in remote imagery alone cannot establish a ship.",
          "sources": [
            {
              "url": "https://www.ibtimes.co.uk/google-earth-user-spots-frozen-ship-surface-icy-antarctica-terrain-1681811",
              "role": "claim provenance"
            },
            {
              "url": "https://www.techtimes.com/articles/251689/20200810/ice-ship-found-near-antarctica-via-google-map-claimed-to-be-a-capsized-boat.htm",
              "role": "assessment or corroborating documentation"
            }
          ],
          "limitations": [
            "Preserves the original claim’s approximate size; no coordinate-level geological verification performed. Distinct from the South Georgia crash-track UFO."
          ],
          "claim_family": "400ft-ice-ship",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship."
        }
      },
      "record_sha256": "378d0d42327c7aff332bd1a6f2d93c7e2d28bb017e9a9db76247d752a1da57c3"
    },
    {
      "id": "theory:ADD-D001",
      "legacy_id": "ADD-D001",
      "kind": "theory",
      "title": "600-million-year-old tiny humanoid fossils",
      "url": "theory-vault.html#ADD-D001",
      "summary": "Viral articles claim miniature humanoid skeletons dating to 600 million years ago were found in Antarctica.",
      "claim": "Viral articles claim miniature humanoid skeletons dating to 600 million years ago were found in Antarctica.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Snopes found no supporting scientific publication and documented manipulated skeletal imagery and inconsistent institutional details.",
        "limitations": [
          "Provenance is traced through the fact-check to a 2022 Xa Lua News version; this does not establish the absolute first publication."
        ]
      },
      "sources": [
        {
          "source_id": "source:96178a932399675849a4",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:97c8350b91fd55db6c8a",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-D001",
        "input_record_sha256": "2429419a9e572840ef00a48379b2893cf8ded27d6ce3b37c502ea28d1b6073ee",
        "original_fields": {
          "id": "ADD-D001",
          "title": "600-million-year-old tiny humanoid fossils",
          "claim": "Viral articles claim miniature humanoid skeletons dating to 600 million years ago were found in Antarctica.",
          "category": "fabricated discovery",
          "status": "Hoax",
          "counterevidence": "Snopes found no supporting scientific publication and documented manipulated skeletal imagery and inconsistent institutional details.",
          "sources": [
            {
              "url": "https://archaeologyworlds.com/600-million-year-ago-fossils-of-tiny-humanoids-found-in-antarctica/",
              "role": "claim documentation and/or assessment"
            },
            {
              "url": "https://tech.yahoo.com/science/articles/fact-check-no-600-million-140000950.html",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": [
            "Provenance is traced through the fact-check to a 2022 Xa Lua News version; this does not establish the absolute first publication."
          ],
          "claim_family": "tiny-humanoid-fossils",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Viral articles claim miniature humanoid skeletons dating to 600 million years ago were found in Antarctica."
        }
      },
      "record_sha256": "a527d5016863f35a9ea806de6dc7a61e8b4977f8e2af7186bb18ea11b3b008a4"
    },
    {
      "id": "theory:ADD-D002",
      "legacy_id": "ADD-D002",
      "kind": "theory",
      "title": "Helicopter footage captures an Antarctic UFO",
      "url": "theory-vault.html#ADD-D002",
      "summary": "A viral clip was described as authentic helicopter footage of a UFO flying over Antarctic waters.",
      "claim": "A viral clip was described as authentic helicopter footage of a UFO flying over Antarctic waters.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The video was traced to visual-effects artist Colton Kirkegaard and described as rendered in Unreal Engine, rather than filmed evidence.",
        "limitations": [
          "A specific rendered-video case, distinct from AI still images of recovered saucers."
        ]
      },
      "sources": [
        {
          "source_id": "source:9382547398e773607def",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-D002",
        "input_record_sha256": "f5822c180c805ec8228389c38abc963bb163c94f5887d2a110c20511258e1196",
        "original_fields": {
          "id": "ADD-D002",
          "title": "Helicopter footage captures an Antarctic UFO",
          "claim": "A viral clip was described as authentic helicopter footage of a UFO flying over Antarctic waters.",
          "category": "digital-video hoax",
          "status": "Computer-generated footage",
          "counterevidence": "The video was traced to visual-effects artist Colton Kirkegaard and described as rendered in Unreal Engine, rather than filmed evidence.",
          "sources": [
            {
              "url": "https://dailycaller.com/2022/04/21/fact-check-ufo-antarctica-video-recon-mission/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": [
            "A specific rendered-video case, distinct from AI still images of recovered saucers."
          ],
          "claim_family": "kirkegaard-ufo-video",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A viral clip was described as authentic helicopter footage of a UFO flying over Antarctic waters."
        }
      },
      "record_sha256": "779c9b2ad787d5496e7129a91a629a1ea3cb679f9884512dfe77929857a396ce"
    },
    {
      "id": "theory:ADD-D003",
      "legacy_id": "ADD-D003",
      "kind": "theory",
      "title": "UN granted South Korea Antarctic territory",
      "url": "theory-vault.html#ADD-D003",
      "summary": "A 2022 video claimed the UN had allocated Antarctic territory to South Korea and other states while excluding Japan.",
      "claim": "A 2022 video claimed the UN had allocated Antarctic territory to South Korea and other states while excluding Japan.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "South Korea’s foreign ministry told AFP no such claim or UN grant existed; AFP found no corresponding General Assembly records.",
        "limitations": [
          "Records the specific 2022 allegation and official response; not current legal advice."
        ]
      },
      "sources": [
        {
          "source_id": "source:931822f002b45eae5fbd",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-D003",
        "input_record_sha256": "107f79cb8ca0c47109254f359f565d10a214192401d1d855f4551ac9733f9233",
        "original_fields": {
          "id": "ADD-D003",
          "title": "UN granted South Korea Antarctic territory",
          "claim": "A 2022 video claimed the UN had allocated Antarctic territory to South Korea and other states while excluding Japan.",
          "category": "geopolitical misinformation",
          "status": "False allocation claim",
          "counterevidence": "South Korea’s foreign ministry told AFP no such claim or UN grant existed; AFP found no corresponding General Assembly records.",
          "sources": [
            {
              "url": "https://factcheck.afp.com/doc.afp.com.32DH7HC",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": [
            "Records the specific 2022 allegation and official response; not current legal advice."
          ],
          "claim_family": "south-korea-un-allocation",
          "verification_date": "2026-10-28",
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "A 2022 video claimed the UN had allocated Antarctic territory to South Korea and other states while excluding Japan."
        }
      },
      "record_sha256": "4c54fe97a57f5883b3077b46b40ec0e117a12f914450244056d812cc8bd5305f"
    },
    {
      "id": "theory:ADD-D004",
      "legacy_id": "ADD-D004",
      "kind": "theory",
      "title": "Antarctic sunlight reflects off a solid firmament",
      "url": "theory-vault.html#ADD-D004",
      "summary": "Posts interpreted an Antarctic video by Peter Neff and colleagues as sunlight reflecting from a dome over a flat Earth.",
      "claim": "Posts interpreted an Antarctic video by Peter Neff and colleagues as sunlight reflecting from a dome over a flat Earth.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Teyit identified ice halos and sundogs, not evidence of a solid dome.",
        "limitations": [
          "A distinct optical observation claim, not another name for the ice-wall model or firmament drilling story."
        ]
      },
      "sources": [
        {
          "source_id": "source:961520daacb0bfb392e0",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-D004",
        "input_record_sha256": "9937fbfd4d1341cc2a296581ed732623ddc98a1113eb62686a6bcf72d2bb2244",
        "original_fields": {
          "id": "ADD-D004",
          "title": "Antarctic sunlight reflects off a solid firmament",
          "claim": "Posts interpreted an Antarctic video by Peter Neff and colleagues as sunlight reflecting from a dome over a flat Earth.",
          "category": "optical-phenomenon interpretation",
          "status": "Misidentified atmospheric optics",
          "counterevidence": "Teyit identified ice halos and sundogs, not evidence of a solid dome.",
          "sources": [
            {
              "url": "https://teyit.org/analiz/goruntuler-antarktikada-gunesin-gok-kubbeden-yansimasini-mi-gosteriyor",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": [
            "A distinct optical observation claim, not another name for the ice-wall model or firmament drilling story."
          ],
          "claim_family": "neff-halo-firmament",
          "verification_date": "2026-10-28",
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "Posts interpreted an Antarctic video by Peter Neff and colleagues as sunlight reflecting from a dome over a flat Earth.",
          "reference_research_leads": {
            "reference_id": "t-dome",
            "items": [
              "Operation Argus (1958)",
              "Operation Fishbowl (1962)",
              "Antarctic Treaty restrictions"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "10125e89f01c8cc3425a5e35acfa0bb5ff8443a069d23af4e70affe346d4d1a9"
    },
    {
      "id": "theory:ADD-D005",
      "legacy_id": "ADD-D005",
      "kind": "theory",
      "title": "Tiny living humans visible on Google Earth",
      "url": "theory-vault.html#ADD-D005",
      "summary": "Scott C. Waring interpreted a small human-like shape in Antarctic Google Earth imagery as possible miniature beings.",
      "claim": "Scott C. Waring interpreted a small human-like shape in Antarctic Google Earth imagery as possible miniature beings.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The source offers a visual interpretation, not biological specimens, an independently observed population, or a reliable size determination.",
        "limitations": [
          "One author’s interpretation; do not conflate with the unrelated alleged ancient miniature fossils."
        ]
      },
      "sources": [
        {
          "source_id": "source:0f9d529da3937c9b0c50",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-D005",
        "input_record_sha256": "47d90db9ab98a0860329cc35d75d6d8248bdafbf0fdacb9c68319b9b901beb9c",
        "original_fields": {
          "id": "ADD-D005",
          "title": "Tiny living humans visible on Google Earth",
          "claim": "Scott C. Waring interpreted a small human-like shape in Antarctic Google Earth imagery as possible miniature beings.",
          "category": "satellite-image interpretation",
          "status": "Unsupported visual speculation",
          "counterevidence": "The source offers a visual interpretation, not biological specimens, an independently observed population, or a reliable size determination.",
          "sources": [
            {
              "url": "https://www.ufosightingsdaily.com/2023/12/tiny-humans-in-antarctica-google-earth.html",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": [
            "One author’s interpretation; do not conflate with the unrelated alleged ancient miniature fossils."
          ],
          "claim_family": "waring-tiny-living-humans",
          "verification_date": "2026-10-28",
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Scott C. Waring interpreted a small human-like shape in Antarctic Google Earth imagery as possible miniature beings."
        }
      },
      "record_sha256": "6ee6f1f1d5d02db2e3dc8e9b3c3293a2e2b924f4ed9a8fd09f69c54b65983a96"
    },
    {
      "id": "theory:GUIDE-DEEP-TIME",
      "legacy_id": "GUIDE-DEEP-TIME",
      "kind": "theory",
      "title": "Six million years in the ice.",
      "url": "theory-vault.html#GUIDE-DEEP-TIME",
      "summary": "An extraordinary real discovery, with an important qualification.",
      "claim": null,
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "context",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:84d773ff8c28d955e1f1",
          "role": "role not specified",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "venable-ice-shelf.jpg",
          "caption": "NASA / Context image, not a sampled ice core / Context image—not proof of the broader claim.",
          "title": "Six million years in the ice.",
          "href": "theory-vault.html#GUIDE-DEEP-TIME"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#GUIDE-DEEP-TIME",
        "input_record_sha256": "e0720cf6300406463d30084c7fc95b0368eff9072c160d1c19479f04bd0b3bfc",
        "original_fields": {
          "id": "GUIDE-DEEP-TIME",
          "title": "Six million years in the ice.",
          "category": "research guide",
          "description": "An extraordinary real discovery, with an important qualification.",
          "record_type": "research/scientific context guide",
          "source_dossier": "deep-time",
          "sources": [
            "https://www.whoi.edu/press-room/news-release/six-million-year-old-ice-discovered-in-antarctica-offers-unprecedented-window-into-a-warmer-earth/"
          ],
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "context",
          "map_id": "deep-time",
          "summary": "An extraordinary real discovery, with an important qualification."
        }
      },
      "record_sha256": "d925bbc80b5ed77cb0679dc39647ba8042faa4055cca91d680fb6ffcf30ecc09"
    },
    {
      "id": "theory:GUIDE-LANDSCAPES",
      "legacy_id": "GUIDE-LANDSCAPES",
      "kind": "theory",
      "title": "Rivers from another age.",
      "url": "theory-vault.html#GUIDE-LANDSCAPES",
      "summary": "Ancient landscapes beneath the ice—and the difference between age and archaeology.",
      "claim": null,
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "context",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:5387790fa58d2c97b4d5",
          "role": "role not specified",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#GUIDE-LANDSCAPES",
        "input_record_sha256": "7b2e45de661713bcc27d157061296cae35f2da69ee2dccc7f11eb17223b0195a",
        "original_fields": {
          "id": "GUIDE-LANDSCAPES",
          "title": "Rivers from another age.",
          "category": "research guide",
          "description": "Ancient landscapes beneath the ice—and the difference between age and archaeology.",
          "record_type": "research/scientific context guide",
          "source_dossier": "landscapes",
          "sources": [
            "https://www.bas.ac.uk/news/ancient-river-landscapes-discovered-beneath-east-antarctica/"
          ],
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "context",
          "map_id": "landscapes",
          "summary": "Ancient landscapes beneath the ice—and the difference between age and archaeology."
        }
      },
      "record_sha256": "ab1c25b55e46df51d0921eab2a0650f02103589bdaacc826f501f0155ba80ba0"
    },
    {
      "id": "theory:GUIDE-SATELLITE",
      "legacy_id": "GUIDE-SATELLITE",
      "kind": "theory",
      "title": "The screenshot problem.",
      "url": "theory-vault.html#GUIDE-SATELLITE",
      "summary": "Doorways, dark shapes, and suspicious blurs: start with the original image.",
      "claim": null,
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "context",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a5d12e2c333c23c126f1",
          "role": "role not specified",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:100796df052220881513",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:2e9acb0ad1116bc64a1f",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:100796df052220881513",
          "role": "This product-specific 82.5°S coverage limit cannot be generalized to all imagery.",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:908b6ad153d1ec85d52c",
          "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "venable-ice-shelf.jpg",
          "caption": "NASA/JPL-Caltech/UC Irvine / Ice-shelf context / Context image—not proof of the broader claim.",
          "title": "The screenshot problem.",
          "href": "theory-vault.html#GUIDE-SATELLITE"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#GUIDE-SATELLITE",
        "input_record_sha256": "f49910752367fa063373e545e4230fdce319645ef7672e44862a6d44e6ffaf61",
        "original_fields": {
          "id": "GUIDE-SATELLITE",
          "title": "The screenshot problem.",
          "category": "research guide",
          "description": "Doorways, dark shapes, and suspicious blurs: start with the original image.",
          "record_type": "research/scientific context guide",
          "source_dossier": "satellite",
          "sources": [
            "https://www.bas.ac.uk/news/new-map-of-landscape-beneath-antarctica-unveiled/",
            {
              "url": "https://lima.usgs.gov/",
              "role": "Primary institutional context; not proof of the speculative claim"
            },
            {
              "url": "https://www.usgs.gov/publications/landsat-image-mosaic-antarctica",
              "role": "Primary institutional context; not proof of the speculative claim"
            },
            {
              "url": "https://lima.usgs.gov/",
              "title": "USGS LIMA orbital coverage statement",
              "role": "This product-specific 82.5°S coverage limit cannot be generalized to all imagery."
            },
            {
              "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents."
            }
          ],
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "context",
          "map_id": "satellite",
          "summary": "Doorways, dark shapes, and suspicious blurs: start with the original image.",
          "reference_research_leads": {
            "reference_id": "t-sat-gaps",
            "items": [
              "Black hole around the South Pole in older mosaics",
              "Patchy resolution in online maps"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "research_context": [
            {
              "text": "Original Landsat LIMA coverage stops at 82.5°S because of its orbital coverage. That product-specific limit does not describe every satellite or establish censorship in a particular Google Earth patch.",
              "source_url": "https://lima.usgs.gov/"
            },
            {
              "text": "The USGS research publication describes LIMA scenes acquired primarily during 1999–2003, combined and processed into a mosaic. Publication date and observation date are different.",
              "source_url": "https://www.usgs.gov/publications/landsat-image-mosaic-antarctica"
            }
          ],
          "cited_material": [
            "USGS LIMA orbital coverage statement — This product-specific 82.5°S coverage limit cannot be generalized to all imagery."
          ],
          "supporting_images": [
            {
              "src": "thumbs/modis-antarctic-coasts.jpg",
              "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping",
              "title": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
              "source_url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "a9408e73b2b6f3ee624ac6f340e3d274456e1a42da4f0e64a9fc7acfab4dbda7"
    },
    {
      "id": "theory:GUIDE-UNDERICE",
      "legacy_id": "GUIDE-UNDERICE",
      "kind": "theory",
      "title": "The world beneath the ice.",
      "url": "theory-vault.html#GUIDE-UNDERICE",
      "summary": "A hidden landscape is real. What we know comes from measurements.",
      "claim": null,
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "context",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a5d12e2c333c23c126f1",
          "role": "role not specified",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:a7769b66acbcc97db493",
          "role": "role not specified",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:11e31403bc4c75aafe1c",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#GUIDE-UNDERICE",
        "input_record_sha256": "158148dd74f771918383fd7550fa53aa1dec852d7d8d278fe358122249403ef5",
        "original_fields": {
          "id": "GUIDE-UNDERICE",
          "title": "The world beneath the ice.",
          "category": "research guide",
          "description": "A hidden landscape is real. What we know comes from measurements.",
          "record_type": "research/scientific context guide",
          "source_dossier": "underice",
          "sources": [
            "https://www.bas.ac.uk/news/new-map-of-landscape-beneath-antarctica-unveiled/",
            "https://www.esa.int/Applications/Observing_the_Earth/FutureEO/CryoSat/85_new_subglacial_lakes_detected_below_Antarctica",
            {
              "url": "https://nsidc.org/data/nsidc-0756/versions/3",
              "role": "Primary institutional context; not proof of the speculative claim"
            }
          ],
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "context",
          "map_id": "underice",
          "summary": "A hidden landscape is real. What we know comes from measurements.",
          "reference_research_leads": {
            "reference_id": "t-lost-civ",
            "items": [
              "Ancient-map claims",
              "Hapgood's crustal displacement theory",
              "Subglacial lakes"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "research_context": [
            {
              "text": "BedMachine Antarctica version 3 is a scientific bed-elevation model. It is not a direct image of an ancient ice-free coastline or evidence of a lost civilization.",
              "source_url": "https://nsidc.org/data/nsidc-0756/versions/3"
            }
          ]
        }
      },
      "record_sha256": "f285537ec74e6111587477904ce5e12aebed1948edf455e04ff1ddd8661ed781"
    },
    {
      "id": "theory:HIST-01",
      "legacy_id": "HIST-01",
      "kind": "theory",
      "title": "Secret Nazi Antarctic base",
      "url": "theory-vault.html#HIST-01",
      "summary": "Nazi Germany built a functioning concealed Antarctic stronghold.",
      "claim": "Nazi Germany built a functioning concealed Antarctic stronghold.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Expedition records and subsequent exploration do not support construction or resupply.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:19eb5e4040bb8546a318",
          "role": "Peer-reviewed historical investigation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:a0b26288a14f1b2b3b25",
          "role": "Historical background",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c23824a8dd2fd8497b81",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-base.png",
          "caption": "NARA / Known expedition base, not secret-base evidence / Context image—not proof of the broader claim.",
          "title": "Secret Nazi Antarctic base",
          "href": "theory-vault.html#HIST-01"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-01",
        "input_record_sha256": "d44f77e45855bfdd4a42be11e8dc3c4d6ad049b0d9f461752bae84e22b41affb",
        "original_fields": {
          "id": "HIST-01",
          "title": "Secret Nazi Antarctic base",
          "claim": "Nazi Germany built a functioning concealed Antarctic stronghold.",
          "category": "Conspiracy",
          "status": "Contradicted by historical research",
          "counterevidence": "Expedition records and subsequent exploration do not support construction or resupply.",
          "sources": [
            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
            },
            {
              "url": "https://www.history.com/articles/hitler-nazi-secret-expedition-antarctica-whale-oil",
              "role": "Historical background"
            },
            {
              "url": "https://www.bas.ac.uk/about/history/operation-tabarin/",
              "role": "Primary institutional context; not proof of the speculative claim"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": "bases",
          "summary": "Nazi Germany built a functioning concealed Antarctic stronghold.",
          "reference_research_leads": {
            "reference_id": "t-nazi-base",
            "items": [
              "The 1938–39 Schwabenland expedition",
              "U-530 and U-977 surrendering in Argentina in 1945",
              "Operation Tabarin's secrecy"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "research_context": [
            {
              "text": "British Antarctic Survey documents Operation Tabarin as a secret wartime base-building expedition. This historical context does not establish the alleged Nazi-base assault.",
              "source_url": "https://www.bas.ac.uk/about/history/operation-tabarin/"
            }
          ]
        }
      },
      "record_sha256": "46b87d7febd6ae90b31644e475d6cd9c9cb0aa43540f82f472869fb2e9b6fb53"
    },
    {
      "id": "theory:HIST-02",
      "legacy_id": "HIST-02",
      "kind": "theory",
      "title": "Hitler escaped to Antarctica",
      "url": "theory-vault.html#HIST-02",
      "summary": "Hitler survived Berlin and reached Antarctica by submarine.",
      "claim": "Hitler survived Berlin and reached Antarctica by submarine.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The cited submarine movements do not establish such an Antarctic escape.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:19eb5e4040bb8546a318",
          "role": "Peer-reviewed historical investigation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:f603dac892ba614d1b22",
          "role": "Detailed historiography",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-02",
        "input_record_sha256": "c11395bea2e84b840e5c95f8a38e080a03d682c385ee09d35e6afa62d438910f",
        "original_fields": {
          "id": "HIST-02",
          "title": "Hitler escaped to Antarctica",
          "claim": "Hitler survived Berlin and reached Antarctica by submarine.",
          "category": "Conspiracy",
          "status": "Contradicted by historical research",
          "counterevidence": "The cited submarine movements do not establish such an Antarctic escape.",
          "sources": [
            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
            },
            {
              "url": "https://wikileaks.org/gifiles/attach/49/49783_.pdf",
              "role": "Detailed historiography"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Hitler survived Berlin and reached Antarctica by submarine."
        }
      },
      "record_sha256": "0d04dc54b1e4b1d910bbf13048c7c9cb754a2dd3182a4977cc8b2850407cb6fd"
    },
    {
      "id": "theory:HIST-03",
      "legacy_id": "HIST-03",
      "kind": "theory",
      "title": "Hitler ashes and treasure shrine",
      "url": "theory-vault.html#HIST-03",
      "summary": "Hitler died, but his ashes and treasure were hidden in Antarctic ice.",
      "claim": "Hitler died, but his ashes and treasure were hidden in Antarctic ice.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The alleged transport narrative lacks corroborated records.",
        "limitations": "Different from the survival claim; do not imply the source endorses it."
      },
      "sources": [
        {
          "source_id": "source:f603dac892ba614d1b22",
          "role": "Records claim attributed to Buechner and Bernhart",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-03",
        "input_record_sha256": "45afa30a64fd2166064a457f936c2813f26e7960e25a9e17125f5fbedf467fb6",
        "original_fields": {
          "id": "HIST-03",
          "title": "Hitler ashes and treasure shrine",
          "claim": "Hitler died, but his ashes and treasure were hidden in Antarctic ice.",
          "category": "Conspiracy",
          "status": "Unsupported historical allegation",
          "counterevidence": "The alleged transport narrative lacks corroborated records.",
          "sources": [
            {
              "url": "https://wikileaks.org/gifiles/attach/49/49783_.pdf",
              "role": "Records claim attributed to Buechner and Bernhart"
            }
          ],
          "limitations": "Different from the survival claim; do not imply the source endorses it.",
          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Hitler died, but his ashes and treasure were hidden in Antarctic ice."
        }
      },
      "record_sha256": "85498e1367489b26ef2ea7945c381f8344fdcabcf85d2248cd5e5bc611670610"
    },
    {
      "id": "theory:HIST-04",
      "legacy_id": "HIST-04",
      "kind": "theory",
      "title": "SAS Antarctic base assault",
      "url": "theory-vault.html#HIST-04",
      "summary": "British special forces attacked the alleged German Antarctic base.",
      "claim": "British special forces attacked the alleged German Antarctic base.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The relevant SAS personnel had civilian duties; evidence does not support the assault.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:19eb5e4040bb8546a318",
          "role": "Peer-reviewed historical investigation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c23824a8dd2fd8497b81",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-04",
        "input_record_sha256": "fa4811c9590f27c5847eb5885fbd20e07bdc12885b77e007b4a85cd96a45d362",
        "original_fields": {
          "id": "HIST-04",
          "title": "SAS Antarctic base assault",
          "claim": "British special forces attacked the alleged German Antarctic base.",
          "category": "Conspiracy",
          "status": "Contradicted by historical research",
          "counterevidence": "The relevant SAS personnel had civilian duties; evidence does not support the assault.",
          "sources": [
            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
            },
            {
              "url": "https://www.bas.ac.uk/about/history/operation-tabarin/",
              "role": "Primary institutional context; not proof of the speculative claim"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "British special forces attacked the alleged German Antarctic base.",
          "research_context": [
            {
              "text": "British Antarctic Survey documents Operation Tabarin as a secret wartime base-building expedition. This historical context does not establish the alleged Nazi-base assault.",
              "source_url": "https://www.bas.ac.uk/about/history/operation-tabarin/"
            }
          ]
        }
      },
      "record_sha256": "34f8a3ff16cd4065102eeb385d6bf1f246ef902992ee96c81deb58dcc4422d4d"
    },
    {
      "id": "theory:HIST-05",
      "legacy_id": "HIST-05",
      "kind": "theory",
      "title": "Highjump was a secret Antarctic battle",
      "url": "theory-vault.html#HIST-05",
      "summary": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
      "claim": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Its documented purpose concerned polar training and research, not this battle.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:19eb5e4040bb8546a318",
          "role": "Peer-reviewed historical investigation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:bfedf29beddf3b7170e2",
          "role": "Review of the conspiracy and investigation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c8a27eeac610321109cd",
          "role": "A sled dog used for Antarctic transportation during Operation Highjump, in a historical U.S. Navy film still presented by NARA. Expedition context, not evidence of a battle or secret diary.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-base.png",
          "caption": "Real Highjump expedition still / US National Archives. It does not document the alleged secret battle.",
          "title": "Highjump was a secret Antarctic battle",
          "href": "theory-vault.html#HIST-05"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-05",
        "input_record_sha256": "3dea8e8a93f2fa274bb514c4be9b68535ed71d21138a0cab128f41898360bb24",
        "original_fields": {
          "id": "HIST-05",
          "title": "Highjump was a secret Antarctic battle",
          "claim": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
          "category": "Conspiracy",
          "status": "Contradicted by historical research",
          "counterevidence": "Its documented purpose concerned polar training and research, not this battle.",
          "sources": [
            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
            },
            {
              "url": "https://www.nature.com/news/2007/070326/full/news070326-14.html",
              "role": "Review of the conspiracy and investigation"
            },
            {
              "url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
              "role": "A sled dog used for Antarctic transportation during Operation Highjump, in a historical U.S. Navy film still presented by NARA. Expedition context, not evidence of a battle or secret diary."
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": "highjump",
          "summary": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
          "reference_research_leads": {
            "reference_id": "t-highjump",
            "items": [
              "The 5 March 1947 El Mercurio interview",
              "The size of the task force",
              "The early end and casualties"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "supporting_images": [
            {
              "src": "thumbs/highjump-sled-dog.jpg",
              "caption": "A sled dog used for Antarctic transportation during Operation Highjump, in a historical U.S. Navy film still presented by NARA. Expedition context, not evidence of a battle or secret diary. U.S. Navy; National Archives and Records Administration / Aspect-preserving resize only; no generative editing or cropping",
              "title": "A sled dog used for Antarctic transportation during Operation Highjump, in a historical U.S. Navy film still presented by NARA. Expedition context, not evidence of a battle or secret diary.",
              "source_url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
              "rights_url": "https://www.archives.gov/global-pages/privacy.html",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "dcc3bdfa3d770dfe31d6a483b8f90a7e379aa846a7a2f41efb25b345e10c3539"
    },
    {
      "id": "theory:HIST-06",
      "legacy_id": "HIST-06",
      "kind": "theory",
      "title": "Argus destroyed an Antarctic Nazi base",
      "url": "theory-vault.html#HIST-06",
      "summary": "American nuclear tests destroyed the hidden Antarctic base.",
      "claim": "American nuclear tests destroyed the hidden Antarctic base.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Operation Argus detonations occurred far north of the claimed base.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:19eb5e4040bb8546a318",
          "role": "Peer-reviewed historical investigation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-06",
        "input_record_sha256": "93b6b63d916361b7023c0a2b5689989089bcc6f6664338d287dd1399a35c6904",
        "original_fields": {
          "id": "HIST-06",
          "title": "Argus destroyed an Antarctic Nazi base",
          "claim": "American nuclear tests destroyed the hidden Antarctic base.",
          "category": "Conspiracy",
          "status": "Contradicted by test geography",
          "counterevidence": "Operation Argus detonations occurred far north of the claimed base.",
          "sources": [
            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "American nuclear tests destroyed the hidden Antarctic base."
        }
      },
      "record_sha256": "cabd0370f2f0feb2426c54a40a8029d304ccc0b9850ce2eee9658682eec781de"
    },
    {
      "id": "theory:HIST-07",
      "legacy_id": "HIST-07",
      "kind": "theory",
      "title": "Antarctic Nazi flying-saucer industry",
      "url": "theory-vault.html#HIST-07",
      "summary": "Escaped Nazis manufactured advanced flying saucers beneath Antarctica.",
      "claim": "Escaped Nazis manufactured advanced flying saucers beneath Antarctica.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The story is documented in extremist UFO literature, not validated engineering records.",
        "limitations": "Contextualize neo-Nazi origins without endorsing or aestheticizing them."
      },
      "sources": [
        {
          "source_id": "source:12aa8d28ba2fce8f93f5",
          "role": "Documents Ernst Zundel claim lineage",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:19eb5e4040bb8546a318",
          "role": "Historical counterevidence",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-07",
        "input_record_sha256": "d42fefd52c54f88fc85032be8a280336ccbcf54b0dfe89b0bcb29b46d257d8c1",
        "original_fields": {
          "id": "HIST-07",
          "title": "Antarctic Nazi flying-saucer industry",
          "claim": "Escaped Nazis manufactured advanced flying saucers beneath Antarctica.",
          "category": "Conspiracy",
          "status": "No verified evidence",
          "counterevidence": "The story is documented in extremist UFO literature, not validated engineering records.",
          "sources": [
            {
              "url": "https://www.splcenter.org/resources/hatewatch/close-encounters-racist-kind/",
              "role": "Documents Ernst Zundel claim lineage"
            },
            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Historical counterevidence"
            }
          ],
          "limitations": "Contextualize neo-Nazi origins without endorsing or aestheticizing them.",
          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Escaped Nazis manufactured advanced flying saucers beneath Antarctica."
        }
      },
      "record_sha256": "6a2434561f38bf87302d233cacb30df2f18e7690b6c86fe2b8bc8920036d9b7c"
    },
    {
      "id": "theory:HIST-08",
      "legacy_id": "HIST-08",
      "kind": "theory",
      "title": "Polar entrance to a habitable hollow Earth",
      "url": "theory-vault.html#HIST-08",
      "summary": "A southern polar opening leads into an inhabited inner world.",
      "claim": "A southern polar opening leads into an inhabited inner world.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Modern evidence for Earth structure does not support a hollow inhabited interior.",
        "limitations": "Symmes proposed openings at both poles; his requested expedition was northward."
      },
      "sources": [
        {
          "source_id": "source:430febe19a41e81e1b94",
          "role": "Scholarly history of Symmes theory",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c392382d1e16285fe57f",
          "role": "Modern Antarctic claim and scientific response",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:63df944bd2ab12c69eda",
          "role": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/earth-interior-usgs.jpg",
          "caption": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance. U.S. Geological Survey / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "Polar entrance to a habitable hollow Earth",
          "href": "theory-vault.html#HIST-08"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-08",
        "input_record_sha256": "cba4eedbf5f072ae0980d27954468dead8127ddd27d8741964ba2de223e227ed",
        "original_fields": {
          "id": "HIST-08",
          "title": "Polar entrance to a habitable hollow Earth",
          "claim": "A southern polar opening leads into an inhabited inner world.",
          "category": "Historical fringe cosmology",
          "status": "Contradicted by geophysics",
          "counterevidence": "Modern evidence for Earth structure does not support a hollow inhabited interior.",
          "sources": [
            {
              "url": "https://www.tandfonline.com/doi/abs/10.2747/0272-3646.25.5.382",
              "role": "Scholarly history of Symmes theory"
            },
            {
              "url": "https://politifact.com/factchecks/2022/jul/26/instagram-posts/fact-checking-hollow-earth-conspiracy-theory/",
              "role": "Modern Antarctic claim and scientific response"
            },
            {
              "url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
              "role": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance."
            }
          ],
          "limitations": "Symmes proposed openings at both poles; his requested expedition was northward.",
          "claim_family": "Hollow Earth",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "A southern polar opening leads into an inhabited inner world.",
          "reference_research_leads": {
            "reference_id": "t-hollow",
            "items": [
              "Symmes's 1818 circular",
              "Altered satellite pictures showing a black polar 'hole'"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "supporting_images": [
            {
              "src": "thumbs/earth-interior-usgs.jpg",
              "caption": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance. U.S. Geological Survey / Aspect-preserving resize only; no generative editing or cropping",
              "title": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
              "source_url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
              "rights_url": "https://www.usgs.gov/faqs/are-usgs-reportspublications-copyrighted",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "634c9251825c35c7f5d1a234be8be1d29f2bf64936e1648fb78d337aacca5303"
    },
    {
      "id": "theory:HIST-09",
      "legacy_id": "HIST-09",
      "kind": "theory",
      "title": "Byrd secret-diary encounter",
      "url": "theory-vault.html#HIST-09",
      "summary": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
      "claim": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No established archival provenance connects the circulated text to Byrd.",
        "limitations": "Versions concern the North Pole but circulate in Antarctic narratives; do not conflate this with authentic Byrd notebooks."
      },
      "sources": [
        {
          "source_id": "source:2f25af4df9b8127bd1c2",
          "role": "Example of claimant circulation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:2eb7acb851770bf2d856",
          "role": "Provenance and chronology discussion",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:63df944bd2ab12c69eda",
          "role": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-aircraft.png",
          "caption": "NARA / Expedition context, not diary evidence / Context image—not proof of the broader claim.",
          "title": "Byrd secret-diary encounter",
          "href": "theory-vault.html#HIST-09"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-09",
        "input_record_sha256": "c91edfa8f74c1f1ac1371ee6c3466d6fe418533b3e1987b788e4e8bd6272051d",
        "original_fields": {
          "id": "HIST-09",
          "title": "Byrd secret-diary encounter",
          "claim": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
          "category": "Document-provenance legend",
          "status": "Unauthenticated",
          "counterevidence": "No established archival provenance connects the circulated text to Byrd.",
          "sources": [
            {
              "url": "https://forbiddenknowledgetv.net/post/sensitive/admiral-byrds-diary",
              "role": "Example of claimant circulation"
            },
            {
              "url": "https://briefglo.com/admiral-byrd-antarctica-hollow-earth/",
              "role": "Provenance and chronology discussion"
            },
            {
              "url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
              "role": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance."
            }
          ],
          "limitations": "Versions concern the North Pole but circulate in Antarctic narratives; do not conflate this with authentic Byrd notebooks.",
          "claim_family": "Hollow Earth",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": "byrd",
          "summary": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
          "reference_research_leads": {
            "reference_id": "t-byrd-diary",
            "items": [
              "Text circulated as 'The Missing Diary of Admiral Byrd'"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "supporting_images": [
            {
              "src": "thumbs/earth-interior-usgs.jpg",
              "caption": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance. U.S. Geological Survey / Aspect-preserving resize only; no generative editing or cropping",
              "title": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
              "source_url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
              "rights_url": "https://www.usgs.gov/faqs/are-usgs-reportspublications-copyrighted",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "ca89892a48481c439aba3c86b1a2d669007ada5157a6312d641f65c9013d7714"
    },
    {
      "id": "theory:HIST-10",
      "legacy_id": "HIST-10",
      "kind": "theory",
      "title": "Rainbow City",
      "url": "theory-vault.html#HIST-10",
      "summary": "The Hefferlins described a technologically advanced city concealed beneath Antarctic ice.",
      "claim": "The Hefferlins described a technologically advanced city concealed beneath Antarctic ice.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "A circulated account is not archaeological corroboration.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:c6d88c365cfdd4846932",
          "role": "Primary publication in claimant tradition",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:154e1dffdcfb6c33da6d",
          "role": "Scholarly history of claim circulation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-10",
        "input_record_sha256": "5aed023bcb5f4eec8686df0d307dfb8f0e8b9f85936fb0d1ef2006680fc8d372",
        "original_fields": {
          "id": "HIST-10",
          "title": "Rainbow City",
          "claim": "The Hefferlins described a technologically advanced city concealed beneath Antarctic ice.",
          "category": "Occult contact narrative",
          "status": "Unverified",
          "counterevidence": "A circulated account is not archaeological corroboration.",
          "sources": [
            {
              "url": "https://borderlandsciences.org/journal/vol/30/n05/Hefferlin_into_Rainbow_City.html",
              "role": "Primary publication in claimant tradition"
            },
            {
              "url": "https://cryptome.org/2013/01/aaron-swartz/Conspiracy-Culture.pdf",
              "role": "Scholarly history of claim circulation"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Hidden civilizations",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The Hefferlins described a technologically advanced city concealed beneath Antarctic ice."
        }
      },
      "record_sha256": "2ada3931a678b3ff863be38ef0894921d35f8e88d80c118c7d8a55928a4efe86"
    },
    {
      "id": "theory:HIST-11",
      "legacy_id": "HIST-11",
      "kind": "theory",
      "title": "Antarctica was Atlantis",
      "url": "theory-vault.html#HIST-11",
      "summary": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
      "claim": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated Antarctic archaeology establishes that identification.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:ebfac4a62af804ac30c9",
          "role": "Documents proposed location",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d992d96502ce4265845e",
          "role": "Geological criticism",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-c8c2f41b81fd.jpg",
          "caption": "Kircher’s historical Atlantis illustration / Library of Congress. Not a survey of Antarctica or proof Atlantis existed.",
          "title": "Antarctica was Atlantis",
          "href": "theory-vault.html#HIST-11"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-11",
        "input_record_sha256": "54cade3149f619af3fcb11acae96919a2aea3d3bf8f4c3c663a95f2a177b2c57",
        "original_fields": {
          "id": "HIST-11",
          "title": "Antarctica was Atlantis",
          "claim": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
          "category": "Alternative history",
          "status": "Unverified",
          "counterevidence": "No authenticated Antarctic archaeology establishes that identification.",
          "sources": [
            {
              "url": "https://www.history.com/articles/top-6-theories-about-atlantis",
              "role": "Documents proposed location"
            },
            {
              "url": "https://talkorigins.org/faqs/mom/atlantis.html",
              "role": "Geological criticism"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Antarctic Atlantis",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
          "reference_research_leads": {
            "reference_id": "t-lost-civ",
            "items": [
              "Ancient-map claims",
              "Hapgood's crustal displacement theory",
              "Subglacial lakes"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "bcbc0559d22b6741e31606a9af578259d0df122a03a2e1f615e2a4273df321e3"
    },
    {
      "id": "theory:HIST-12",
      "legacy_id": "HIST-12",
      "kind": "theory",
      "title": "Rapid crust displacement froze inhabited Antarctica",
      "url": "theory-vault.html#HIST-12",
      "summary": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
      "claim": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Geological and ice-sheet evidence contradicts the proposed recent displacement scenario.",
        "limitations": "Distinct proposed mechanism, not merely another name for Atlantis."
      },
      "sources": [
        {
          "source_id": "source:4cf3a77e662e9182ee1d",
          "role": "Examination of Hapgood mechanism",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d992d96502ce4265845e",
          "role": "Geological counteranalysis",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-12",
        "input_record_sha256": "f44a9008346bc3acaff02af61945185db30979655816414545af6804d05a31d1",
        "original_fields": {
          "id": "HIST-12",
          "title": "Rapid crust displacement froze inhabited Antarctica",
          "claim": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
          "category": "Rejected geological hypothesis",
          "status": "Not accepted geology",
          "counterevidence": "Geological and ice-sheet evidence contradicts the proposed recent displacement scenario.",
          "sources": [
            {
              "url": "https://www.skrause.org/writing/papers/hapgood_and_ecd.shtml",
              "role": "Examination of Hapgood mechanism"
            },
            {
              "url": "https://talkorigins.org/faqs/mom/atlantis.html",
              "role": "Geological counteranalysis"
            }
          ],
          "limitations": "Distinct proposed mechanism, not merely another name for Atlantis.",
          "claim_family": "Antarctic Atlantis",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
          "reference_research_leads": {
            "reference_id": "t-lost-civ",
            "items": [
              "Ancient-map claims",
              "Hapgood's crustal displacement theory",
              "Subglacial lakes"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "c58ea851260d0d419624104809abbe0d2e1103811d2590820148104ab05bd694"
    },
    {
      "id": "theory:HIST-13",
      "legacy_id": "HIST-13",
      "kind": "theory",
      "title": "Ancient sea kings surveyed Antarctica",
      "url": "theory-vault.html#HIST-13",
      "summary": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
      "claim": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Early-map interpretation does not establish the proposed civilization.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:2136ca31b04b865a63a3",
          "role": "Publisher description of Hapgood thesis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:560eed8d41b153d66ddb",
          "role": "Cartographic criticism",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "gleason-1892-highres.jpg",
          "caption": "Gleason, 1892 / Boston Public Library / Context image—not proof of the broader claim.",
          "title": "Ancient sea kings surveyed Antarctica",
          "href": "theory-vault.html#HIST-13"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-13",
        "input_record_sha256": "0f1c00c6b9aa334038044acb925ac8fbda635bc5448bd81712399c163b2e6c06",
        "original_fields": {
          "id": "HIST-13",
          "title": "Ancient sea kings surveyed Antarctica",
          "claim": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
          "category": "Alternative history",
          "status": "Unverified",
          "counterevidence": "Early-map interpretation does not establish the proposed civilization.",
          "sources": [
            {
              "url": "https://books.google.com/books/about/Maps_of_the_Ancient_Sea_Kings.html?id=5iLG2D5eBswC",
              "role": "Publisher description of Hapgood thesis"
            },
            {
              "url": "https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1986/10/22165322/p34.pdf",
              "role": "Cartographic criticism"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": "maps",
          "summary": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
          "reference_research_leads": {
            "reference_id": "t-ancient-maps",
            "items": [
              "Piri Reis 1513",
              "Finé 1531",
              "Mercator 1538",
              "Buache 1739"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "acc70d005481a46afaa0aa829c534f06713ab41a4f4609548500cc5f1d1aed8a"
    },
    {
      "id": "theory:HIST-14",
      "legacy_id": "HIST-14",
      "kind": "theory",
      "title": "Extraterrestrials supplied Antarctic map knowledge",
      "url": "theory-vault.html#HIST-14",
      "summary": "Alien survey technology explains purported ice-free Antarctica on early maps.",
      "claim": "Alien survey technology explains purported ice-free Antarctica on early maps.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The underlying identification of the mapped coast with Antarctica is disputed.",
        "limitations": "A separate proposed agent from ancient mariners, but same evidentiary family."
      },
      "sources": [
        {
          "source_id": "source:a0b3fdfc89e927ab588d",
          "role": "Documents von Daniken interpretation and criticism",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-14",
        "input_record_sha256": "24a6db882746a4950f34c26ba529741d64eb9d92598b5cd6314c2081457f7541",
        "original_fields": {
          "id": "HIST-14",
          "title": "Extraterrestrials supplied Antarctic map knowledge",
          "claim": "Alien survey technology explains purported ice-free Antarctica on early maps.",
          "category": "Ancient astronaut claim",
          "status": "Unverified",
          "counterevidence": "The underlying identification of the mapped coast with Antarctica is disputed.",
          "sources": [
            {
              "url": "https://www.badarchaeology.com/old-maps/the-piri-reis-map/",
              "role": "Documents von Daniken interpretation and criticism"
            }
          ],
          "limitations": "A separate proposed agent from ancient mariners, but same evidentiary family.",
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "Alien survey technology explains purported ice-free Antarctica on early maps."
        }
      },
      "record_sha256": "aadfdda50f9c270f528991e834ce38aee5041a7daa87cd57a047d1314e3f1b6c"
    },
    {
      "id": "theory:HIST-15",
      "legacy_id": "HIST-15",
      "kind": "theory",
      "title": "Piri Reis depicts an ice-free Antarctic coast",
      "url": "theory-vault.html#HIST-15",
      "summary": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
      "claim": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Cartographic criticism finds no demonstrated accurate Antarctic survey.",
        "limitations": "Map existence is genuine; the Antarctic interpretation is the claim."
      },
      "sources": [
        {
          "source_id": "source:84f4fa4063a6bf384622",
          "role": "Hapgood hypothesis history",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:560eed8d41b153d66ddb",
          "role": "Cartographic criticism",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:ac67026bdec2f3d8fc87",
          "role": "The source authenticates the historical artifact, not the ice-free Antarctic interpretation.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-15",
        "input_record_sha256": "74ae916a2c1b20f5930c341d97fa705060d655290c40f8c84ce567889e4a996d",
        "original_fields": {
          "id": "HIST-15",
          "title": "Piri Reis depicts an ice-free Antarctic coast",
          "claim": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
          "category": "Cartographic interpretation",
          "status": "Unsupported identification",
          "counterevidence": "Cartographic criticism finds no demonstrated accurate Antarctic survey.",
          "sources": [
            {
              "url": "https://archive.aramcoworld.com/issue/198001/piri.reis.and.the.hapgood.hypotheses.htm",
              "role": "Hapgood hypothesis history"
            },
            {
              "url": "https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1986/10/22165322/p34.pdf",
              "role": "Cartographic criticism"
            },
            {
              "url": "https://www.unesco.org/en/memory-world/piri-reis-world-map-1513",
              "title": "Piri Reis world map fragment, 1513",
              "role": "The source authenticates the historical artifact, not the ice-free Antarctic interpretation."
            }
          ],
          "limitations": "Map existence is genuine; the Antarctic interpretation is the claim.",
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": "maps",
          "summary": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
          "reference_research_leads": {
            "reference_id": "t-ancient-maps",
            "items": [
              "Piri Reis 1513",
              "Finé 1531",
              "Mercator 1538",
              "Buache 1739"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "cited_material": [
            "Piri Reis world map fragment, 1513 — The source authenticates the historical artifact, not the ice-free Antarctic interpretation."
          ]
        }
      },
      "record_sha256": "9242c3e34a876a5518edc6da7eb447f8be227600b8a4b6700e8b256a3bf00e1e"
    },
    {
      "id": "theory:HIST-16",
      "legacy_id": "HIST-16",
      "kind": "theory",
      "title": "Oronce Fine records preglacial Antarctica",
      "url": "theory-vault.html#HIST-16",
      "summary": "Fine’s southern continent preserves a real survey of Antarctica before major ice cover.",
      "claim": "Fine’s southern continent preserves a real survey of Antarctica before major ice cover.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Conjectural southern geography is not evidence of a measured Antarctic coastline.",
        "limitations": "Related map hypothesis; do not count reproduction editions as new theories."
      },
      "sources": [
        {
          "source_id": "source:2136ca31b04b865a63a3",
          "role": "Documents map-based thesis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:560eed8d41b153d66ddb",
          "role": "Map-specific critical analysis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:11a6e51e04f7c02c49b1",
          "role": "This edition-specific original differs from the 1534 single-heart map.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-16",
        "input_record_sha256": "443881f5f8444ee9520bd10195413a2753a5d4cd1baf2bc0df604e20cbe99817",
        "original_fields": {
          "id": "HIST-16",
          "title": "Oronce Fine records preglacial Antarctica",
          "claim": "Fine’s southern continent preserves a real survey of Antarctica before major ice cover.",
          "category": "Cartographic interpretation",
          "status": "Unsupported identification",
          "counterevidence": "Conjectural southern geography is not evidence of a measured Antarctic coastline.",
          "sources": [
            {
              "url": "https://books.google.com/books/about/Maps_of_the_Ancient_Sea_Kings.html?id=5iLG2D5eBswC",
              "role": "Documents map-based thesis"
            },
            {
              "url": "https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1986/10/22165322/p34.pdf",
              "role": "Map-specific critical analysis"
            },
            {
              "url": "https://catalogue.bnf.fr/ark:/12148/cb40699514m",
              "title": "Fine double-heart world map: 1531 signature, BnF impression[1532]",
              "role": "This edition-specific original differs from the 1534 single-heart map."
            }
          ],
          "limitations": "Related map hypothesis; do not count reproduction editions as new theories.",
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": "maps",
          "summary": "Fine’s southern continent preserves a real survey of Antarctica before major ice cover.",
          "reference_research_leads": {
            "reference_id": "t-ancient-maps",
            "items": [
              "Piri Reis 1513",
              "Finé 1531",
              "Mercator 1538",
              "Buache 1739"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "cited_material": [
            "Fine double-heart world map: 1531 signature, BnF impression[1532] — This edition-specific original differs from the 1534 single-heart map."
          ]
        }
      },
      "record_sha256": "6dba9911c9d6288766023652e3f088d201350b4e8094c84678499f4168fbc074"
    },
    {
      "id": "theory:HIST-17",
      "legacy_id": "HIST-17",
      "kind": "theory",
      "title": "Buache knew subglacial Antarctic divisions",
      "url": "theory-vault.html#HIST-17",
      "summary": "Buache’s map reveals Antarctic land divisions beneath modern ice.",
      "claim": "Buache’s map reveals Antarctic land divisions beneath modern ice.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Its speculative geography does not demonstrate knowledge of subglacial terrain.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:298fa0a81815b2b02f85",
          "role": "Example stating the claim",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d992d96502ce4265845e",
          "role": "Comparison and criticism",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:11e31403bc4c75aafe1c",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:f19193aa742619e83376",
          "role": "Keep this map distinct from 1754 states and modern subglacial interpretations.",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:9951e91bc22ddced3208",
          "role": "Scientific visualization context, not proof of speculative interpretation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/bedmap2-visualization-thumb.jpg",
          "caption": "Scientific visualization of Bedmap2 bedrock and ice layers (2013). This is a data-derived reconstruction, not a photograph of an ice-free Antarctic continent. NASA’s Goddard Space Flight Center; Bedmap2 data led by British Antarctic Survey Scientific source ↗",
          "title": "Buache knew subglacial Antarctic divisions",
          "href": "theory-vault.html#HIST-17"
        },
        "reuse_notice": "NASA media guidelines permit factual educational/informational website use. Item credits NASA GSFC and includes no third-party restriction notice. No endorsement implied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-17",
        "input_record_sha256": "8e62268f4f5de99f72ba203d55645e472ac7a6ca2ae2f00684728f719e8be477",
        "original_fields": {
          "id": "HIST-17",
          "title": "Buache knew subglacial Antarctic divisions",
          "claim": "Buache’s map reveals Antarctic land divisions beneath modern ice.",
          "category": "Cartographic interpretation",
          "status": "Unsupported identification",
          "counterevidence": "Its speculative geography does not demonstrate knowledge of subglacial terrain.",
          "sources": [
            {
              "url": "https://williamjohncox.com/assets/pdfs/books/MillennialMath.pdf",
              "role": "Example stating the claim"
            },
            {
              "url": "https://talkorigins.org/faqs/mom/atlantis.html",
              "role": "Comparison and criticism"
            },
            {
              "url": "https://nsidc.org/data/nsidc-0756/versions/3",
              "role": "Primary institutional context; not proof of the speculative claim"
            },
            {
              "url": "https://catalogue.bnf.fr/ark:/12148/cb40641130s",
              "title": "Buache southern lands map, 1739 catalog record",
              "role": "Keep this map distinct from 1754 states and modern subglacial interpretations."
            },
            {
              "url": "https://svs.gsfc.nasa.gov/11274/",
              "role": "Scientific visualization context, not proof of speculative interpretation"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": "maps",
          "summary": "Buache’s map reveals Antarctic land divisions beneath modern ice.",
          "reference_research_leads": {
            "reference_id": "t-ancient-maps",
            "items": [
              "Piri Reis 1513",
              "Finé 1531",
              "Mercator 1538",
              "Buache 1739"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "research_context": [
            {
              "text": "BedMachine Antarctica version 3 is a scientific bed-elevation model. It is not a direct image of an ancient ice-free coastline or evidence of a lost civilization.",
              "source_url": "https://nsidc.org/data/nsidc-0756/versions/3"
            }
          ],
          "cited_material": [
            "Buache southern lands map, 1739 catalog record — Keep this map distinct from 1754 states and modern subglacial interpretations."
          ],
          "display_image": {
            "src": "thumbs/bedmap2-visualization-thumb.jpg",
            "credit": "NASA’s Goddard Space Flight Center; Bedmap2 data led by British Antarctic Survey",
            "caption": "Scientific visualization of Bedmap2 bedrock and ice layers (2013). This is a data-derived reconstruction, not a photograph of an ice-free Antarctic continent.",
            "rights": "NASA media guidelines permit factual educational/informational website use. Item credits NASA GSFC and includes no third-party restriction notice. No endorsement implied.",
            "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/"
          }
        }
      },
      "record_sha256": "08705f9fbc3cd5ded340ac17d949c31573bd95795a5c68c98d09de4e091128c2"
    },
    {
      "id": "theory:HIST-18",
      "legacy_id": "HIST-18",
      "kind": "theory",
      "title": "Southern continent balances northern land",
      "url": "theory-vault.html#HIST-18",
      "summary": "A large southern continent must exist to balance northern landmasses.",
      "claim": "A large southern continent must exist to balance northern landmasses.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Later exploration established actual geography, not the proposed symmetry requirement.",
        "limitations": "Historical reasoning, not a modern conspiracy; Antarctica exists but this deduction is not proof of it."
      },
      "sources": [
        {
          "source_id": "source:71f799c3796b21da7f29",
          "role": "Institutional historical explanation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:bcadbdd9391f0790e159",
          "role": "Map-library history",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-18",
        "input_record_sha256": "16f1a7a4144cf16780d93e5971a1b8ee069d707a0f7977ccb2b8e6451b26b501",
        "original_fields": {
          "id": "HIST-18",
          "title": "Southern continent balances northern land",
          "claim": "A large southern continent must exist to balance northern landmasses.",
          "category": "Historical geographical hypothesis",
          "status": "Superseded rationale",
          "counterevidence": "Later exploration established actual geography, not the proposed symmetry requirement.",
          "sources": [
            {
              "url": "https://www.cai.cam.ac.uk/discover/library/online-exhibitions/safe-return-doubtful/terra-australis",
              "role": "Institutional historical explanation"
            },
            {
              "url": "https://static-prod.lib.princeton.edu/visual_materials/maps/websites/pacific/pacific-ocean/terra-australis.html",
              "role": "Map-library history"
            }
          ],
          "limitations": "Historical reasoning, not a modern conspiracy; Antarctica exists but this deduction is not proof of it.",
          "claim_family": "Historical geography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A large southern continent must exist to balance northern landmasses."
        }
      },
      "record_sha256": "aef267f470b7cb69842e016ccb1b45b1f2f963c2339a03306c9b8c448d0f69a3"
    },
    {
      "id": "theory:HIST-19",
      "legacy_id": "HIST-19",
      "kind": "theory",
      "title": "Tierra del Fuego belongs to a vast polar continent",
      "url": "theory-vault.html#HIST-19",
      "summary": "Tierra del Fuego was interpreted as part of an enormous Terra Australis.",
      "claim": "Tierra del Fuego was interpreted as part of an enormous Terra Australis.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Subsequent navigation disproved the imagined continuous landmass.",
        "limitations": "Different testable land connection from the balance rationale; not ancient knowledge of Antarctica."
      },
      "sources": [
        {
          "source_id": "source:04bdecb138db9253fe52",
          "role": "Institutional history of mapped connections",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-19",
        "input_record_sha256": "be3c93ddcfda16399370397d25ebb6734ff8de04cd41c29613c339ae1543efe0",
        "original_fields": {
          "id": "HIST-19",
          "title": "Tierra del Fuego belongs to a vast polar continent",
          "claim": "Tierra del Fuego was interpreted as part of an enormous Terra Australis.",
          "category": "Historical geographical hypothesis",
          "status": "Superseded",
          "counterevidence": "Subsequent navigation disproved the imagined continuous landmass.",
          "sources": [
            {
              "url": "https://blog.biodiversitylibrary.org/2015/06/world-oceans-day-through-books-truth",
              "role": "Institutional history of mapped connections"
            }
          ],
          "limitations": "Different testable land connection from the balance rationale; not ancient knowledge of Antarctica.",
          "claim_family": "Historical geography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Tierra del Fuego was interpreted as part of an enormous Terra Australis."
        }
      },
      "record_sha256": "85a6e40665503e337e13534a2befe405c736d35893cef2b264ffe1cc6b140836"
    },
    {
      "id": "theory:HIST-20",
      "legacy_id": "HIST-20",
      "kind": "theory",
      "title": "New South Greenland in the Weddell Sea",
      "url": "theory-vault.html#HIST-20",
      "summary": "Benjamin Morrell reported land where later investigations found no such coast.",
      "claim": "Benjamin Morrell reported land where later investigations found no such coast.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The alleged land was not established; mirage and navigation explanations have been considered.",
        "limitations": "Morrell’s Land is an alias, not a second entry. Specific original-source inspection remains desirable."
      },
      "sources": [
        {
          "source_id": "source:ee50c713605c21e35b21",
          "role": "Sourced historical overview",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-20",
        "input_record_sha256": "6b193dabd08b12317ca922e6777043f2bce2fc6d6fec78382fbf5dc8084bc99b",
        "original_fields": {
          "id": "HIST-20",
          "title": "New South Greenland in the Weddell Sea",
          "claim": "Benjamin Morrell reported land where later investigations found no such coast.",
          "category": "Historical sighting",
          "status": "Phantom land",
          "counterevidence": "The alleged land was not established; mirage and navigation explanations have been considered.",
          "sources": [
            {
              "url": "https://en.wikipedia.org/wiki/New_South_Greenland",
              "role": "Sourced historical overview"
            }
          ],
          "limitations": "Morrell’s Land is an alias, not a second entry. Specific original-source inspection remains desirable.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Benjamin Morrell reported land where later investigations found no such coast."
        }
      },
      "record_sha256": "b2cda0c5f13e4c1efe3e487bae1d7bd1cab4bc33d5ef3b02ab27d7e353d98e95"
    },
    {
      "id": "theory:HIST-21",
      "legacy_id": "HIST-21",
      "kind": "theory",
      "title": "Emerald Island",
      "url": "theory-vault.html#HIST-21",
      "summary": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts.",
      "claim": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Repeated searches did not establish the charted island.",
        "limitations": "Subantarctic/Southern Ocean context rather than continental Antarctica."
      },
      "sources": [
        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review of reported islands",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-21",
        "input_record_sha256": "8135bfb1d0f47befe06f685a1a233bf071f0eb90c1587e946cdb5553c514490a",
        "original_fields": {
          "id": "HIST-21",
          "title": "Emerald Island",
          "claim": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts.",
          "category": "Historical sighting",
          "status": "Phantom island",
          "counterevidence": "Repeated searches did not establish the charted island.",
          "sources": [
            {
              "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
              "role": "Historical review of reported islands"
            }
          ],
          "limitations": "Subantarctic/Southern Ocean context rather than continental Antarctica.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts."
        }
      },
      "record_sha256": "0b76a5214f5861bfb719734acd15036c9a5dde9eede8a736d11534160f72a29c"
    },
    {
      "id": "theory:HIST-22",
      "legacy_id": "HIST-22",
      "kind": "theory",
      "title": "Nimrod Islands",
      "url": "theory-vault.html#HIST-22",
      "summary": "A reported Southern Ocean island group entered charts after an 1828 sighting.",
      "claim": "A reported Southern Ocean island group entered charts after an 1828 sighting.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Later searches found no islands at the reported location.",
        "limitations": "One group-level claim, not an entry per imagined island."
      },
      "sources": [
        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:83fe5f1466901fa475eb",
          "role": "Search-history overview",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-22",
        "input_record_sha256": "87610e42811fa507096dc2bd15d2e17ae774dbbe98519c0d854c72a42f111f53",
        "original_fields": {
          "id": "HIST-22",
          "title": "Nimrod Islands",
          "claim": "A reported Southern Ocean island group entered charts after an 1828 sighting.",
          "category": "Historical sighting",
          "status": "Phantom islands",
          "counterevidence": "Later searches found no islands at the reported location.",
          "sources": [
            {
              "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
              "role": "Historical review"
            },
            {
              "url": "https://en.wikipedia.org/wiki/Nimrod_Islands",
              "role": "Search-history overview"
            }
          ],
          "limitations": "One group-level claim, not an entry per imagined island.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A reported Southern Ocean island group entered charts after an 1828 sighting."
        }
      },
      "record_sha256": "befea33d31a919bdaed7ed9f11b48af67c667d5535c5abd3387b3e5b33178ac3"
    },
    {
      "id": "theory:HIST-23",
      "legacy_id": "HIST-23",
      "kind": "theory",
      "title": "Dougherty Island",
      "url": "theory-vault.html#HIST-23",
      "summary": "A nineteenth-century report described an island between Cape Horn and New Zealand.",
      "claim": "A nineteenth-century report described an island between Cape Horn and New Zealand.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The described island was not confirmed by later searches.",
        "limitations": "Southern Ocean context; not evidence for lands hidden by a treaty."
      },
      "sources": [
        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review of reported island",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-23",
        "input_record_sha256": "e676aeb989e13d0f0e8694bcdbd28aedc4c53336ae819fe17485af8ce8e9bd7c",
        "original_fields": {
          "id": "HIST-23",
          "title": "Dougherty Island",
          "claim": "A nineteenth-century report described an island between Cape Horn and New Zealand.",
          "category": "Historical sighting",
          "status": "Phantom island",
          "counterevidence": "The described island was not confirmed by later searches.",
          "sources": [
            {
              "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
              "role": "Historical review of reported island"
            }
          ],
          "limitations": "Southern Ocean context; not evidence for lands hidden by a treaty.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A nineteenth-century report described an island between Cape Horn and New Zealand."
        }
      },
      "record_sha256": "c0569075f125a168cbce18a15822cc81679828b445f0150cd65ae65eacfb7a95"
    },
    {
      "id": "theory:HIST-24",
      "legacy_id": "HIST-24",
      "kind": "theory",
      "title": "Royal Company Islands",
      "url": "theory-vault.html#HIST-24",
      "summary": "Charts retained a purported island group in the Southern Ocean.",
      "claim": "Charts retained a purported island group in the Southern Ocean.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Subsequent investigation did not substantiate the reported group.",
        "limitations": "Separate named discovery history, not a Nimrod alias."
      },
      "sources": [
        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review of reported islands",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-24",
        "input_record_sha256": "9545f9f56f6605a6dd5c29217896c1b28e46c62f049e93a4a3ee63b5a3bd6263",
        "original_fields": {
          "id": "HIST-24",
          "title": "Royal Company Islands",
          "claim": "Charts retained a purported island group in the Southern Ocean.",
          "category": "Historical sighting",
          "status": "Phantom islands",
          "counterevidence": "Subsequent investigation did not substantiate the reported group.",
          "sources": [
            {
              "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
              "role": "Historical review of reported islands"
            }
          ],
          "limitations": "Separate named discovery history, not a Nimrod alias.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Charts retained a purported island group in the Southern Ocean."
        }
      },
      "record_sha256": "e01260ff7f7d6c84e7f03478ed6c225c874a61d18414a2ec7aeaed92a79738c8"
    },
    {
      "id": "theory:HIST-25",
      "legacy_id": "HIST-25",
      "kind": "theory",
      "title": "Polynesian voyagers saw Antarctica before Europeans",
      "url": "theory-vault.html#HIST-25",
      "summary": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent.",
      "claim": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Critics challenge translations, chronology and lack of archaeological corroboration.",
        "limitations": "Do not label Indigenous traditions a hoax. Distinguish traditional narratives from contested modern geographical interpretation."
      },
      "sources": [
        {
          "source_id": "source:21cc1c7dca14e64994cb",
          "role": "Paper presenting interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:703d95835a5daabf916c",
          "role": "Scholarly response",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:0555cf3a3588232689b2",
          "role": "Southern Maori scholarly perspective",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-25",
        "input_record_sha256": "6e5a4a8ac04c3b5e06039dad87f918d7db0648a050e993e5659ed8ac8c338f2f",
        "original_fields": {
          "id": "HIST-25",
          "title": "Polynesian voyagers saw Antarctica before Europeans",
          "claim": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent.",
          "category": "Disputed historical interpretation",
          "status": "Scholarly disagreement",
          "counterevidence": "Critics challenge translations, chronology and lack of archaeological corroboration.",
          "sources": [
            {
              "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11485871/",
              "role": "Paper presenting interpretation"
            },
            {
              "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11485678/",
              "role": "Scholarly response"
            },
            {
              "url": "https://www.cambridge.org/core/journals/polar-record/article/abs/southern-maori-perspective-on-stories-of-polynesian-polar-voyaging/CD692ED61C1DAB8F33653C6FCFDDE366",
              "role": "Southern Maori scholarly perspective"
            }
          ],
          "limitations": "Do not label Indigenous traditions a hoax. Distinguish traditional narratives from contested modern geographical interpretation.",
          "claim_family": "Historical discovery",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 3,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent."
        }
      },
      "record_sha256": "86abc46b2b5f1fde3b5d36f7eea2797f9c55d29064b53381a37d943ff5b01046"
    },
    {
      "id": "theory:HIST-26",
      "legacy_id": "HIST-26",
      "kind": "theory",
      "title": "Teddy Evans sabotaged Scott’s return",
      "url": "theory-vault.html#HIST-26",
      "summary": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths.",
      "claim": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Other researchers contest the inference of intentional sabotage and interpretation of orders.",
        "limitations": "Teddy/Edward Evans is not Petty Officer Edgar Evans. Neither intent nor complete causal responsibility should be asserted as settled."
      },
      "sources": [
        {
          "source_id": "source:95b0245666fcc9424605",
          "role": "Peer-reviewed argument",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:909ca6a856347ee75c2c",
          "role": "Published critiques",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-26",
        "input_record_sha256": "3692fab51cbc7e2a5e95e6b48f3200a70a6ef14bf5f14b1c1e83b3af8c25538b",
        "original_fields": {
          "id": "HIST-26",
          "title": "Teddy Evans sabotaged Scott’s return",
          "claim": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths.",
          "category": "Contested expedition history",
          "status": "Published historical allegation, disputed",
          "counterevidence": "Other researchers contest the inference of intentional sabotage and interpretation of orders.",
          "sources": [
            {
              "url": "https://www.cambridge.org/core/journals/polar-record/article/why-didnt-they-ask-evans/224A49CABBF71E72B99C8C9C3B7236A4",
              "role": "Peer-reviewed argument"
            },
            {
              "url": "https://tomcreandiscovery.com/category/race-to-the-pole/",
              "role": "Published critiques"
            }
          ],
          "limitations": "Teddy/Edward Evans is not Petty Officer Edgar Evans. Neither intent nor complete causal responsibility should be asserted as settled.",
          "claim_family": "Contested expedition history",
          "verification_date": "2026-10-28",
          "verification_scope": "Published source and claim checked; historical hypothesis not independently proven.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths."
        }
      },
      "record_sha256": "208697fbb804bec99d2a7f05917e36f83d3232c37d7512d9a36952ad172208bb"
    },
    {
      "id": "theory:HIST-27",
      "legacy_id": "HIST-27",
      "kind": "theory",
      "title": "Anthrax caused Edgar Evans’s death",
      "url": "theory-vault.html#HIST-27",
      "summary": "A retrospective hypothesis attributes Edgar Evans’s death to anthrax acquired through expedition animals or equipment.",
      "claim": "A retrospective hypothesis attributes Edgar Evans’s death to anthrax acquired through expedition animals or equipment.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The diagnosis is inferred from historical descriptions rather than microbiological confirmation.",
        "limitations": "Historical diagnostic debate, not a conspiracy and not current medical advice."
      },
      "sources": [
        {
          "source_id": "source:c9c1e3905ca23c9d1be5",
          "role": "Paper proposing diagnosis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:9099c80440efddcfe536",
          "role": "Discussion of earlier circumstantial hypothesis",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-27",
        "input_record_sha256": "1ee7ceb995d84e9a5fa94117a27bf5a86fde32197903e88d3b6356c189385853",
        "original_fields": {
          "id": "HIST-27",
          "title": "Anthrax caused Edgar Evans’s death",
          "claim": "A retrospective hypothesis attributes Edgar Evans’s death to anthrax acquired through expedition animals or equipment.",
          "category": "Retrospective medical-history hypothesis",
          "status": "Unconfirmed",
          "counterevidence": "The diagnosis is inferred from historical descriptions rather than microbiological confirmation.",
          "sources": [
            {
              "url": "https://www.cambridge.org/core/journals/polar-record/article/abs/death-of-petty-officer-evans/3B2FCA0B33A0FA6AF9F1E7C6D0B965D0",
              "role": "Paper proposing diagnosis"
            },
            {
              "url": "https://researchcommons.waikato.ac.nz/bitstreams/ba6a28ec-e437-4ace-92b2-b4445a72f451/download",
              "role": "Discussion of earlier circumstantial hypothesis"
            }
          ],
          "limitations": "Historical diagnostic debate, not a conspiracy and not current medical advice.",
          "claim_family": "Retrospective medical-history hypothesis",
          "verification_date": "2026-10-28",
          "verification_scope": "Published source and claim checked; historical hypothesis not independently proven.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A retrospective hypothesis attributes Edgar Evans’s death to anthrax acquired through expedition animals or equipment."
        }
      },
      "record_sha256": "b79eced414c4a1fe7cbbe94e0b146cafc244fb41909cf4e673de1c1189043b5b"
    },
    {
      "id": "theory:HIST-28",
      "legacy_id": "HIST-28",
      "kind": "theory",
      "title": "Vela flash was a concealed nuclear test",
      "url": "theory-vault.html#HIST-28",
      "summary": "The 1979 South Atlantic/Indian Ocean flash was an undeclared nuclear explosion, potentially involving Israel and South Africa.",
      "claim": "The 1979 South Atlantic/Indian Ocean flash was an undeclared nuclear explosion, potentially involving Israel and South Africa.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Official and scientific assessments differed; a non-nuclear satellite event was also proposed.",
        "limitations": "Regional connection: southern oceans and Antarctic observations; do not claim the test location was established on continental Antarctica."
      },
      "sources": [
        {
          "source_id": "source:8d256621cacbc8c809d1",
          "role": "Declassified-document collection",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:03ac0d31d3e11c46bdd7",
          "role": "Competing interpretations and Syowa observation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-28",
        "input_record_sha256": "6e5fb3d84400cc817b6a1b6676870e59cea1a16af820a511778258e37274453a",
        "original_fields": {
          "id": "HIST-28",
          "title": "Vela flash was a concealed nuclear test",
          "claim": "The 1979 South Atlantic/Indian Ocean flash was an undeclared nuclear explosion, potentially involving Israel and South Africa.",
          "category": "Unresolved Cold War event",
          "status": "Disputed interpretation with substantive evidence",
          "counterevidence": "Official and scientific assessments differed; a non-nuclear satellite event was also proposed.",
          "sources": [
            {
              "url": "https://nsarchive.gwu.edu/briefing-book/nuclear-vault/2016-12-06/vela-incident-south-atlantic-mystery-flash-september-1979-raised-questions-about-nuclear-test",
              "role": "Declassified-document collection"
            },
            {
              "url": "https://nsarchive2.gwu.edu/NSAEBB/NSAEBB190/",
              "role": "Competing interpretations and Syowa observation"
            }
          ],
          "limitations": "Regional connection: southern oceans and Antarctic observations; do not claim the test location was established on continental Antarctica.",
          "claim_family": "Unresolved Cold War event",
          "verification_date": "2026-10-28",
          "verification_scope": "Published source and claim checked; historical hypothesis not independently proven.",
          "source_count": 2,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The 1979 South Atlantic/Indian Ocean flash was an undeclared nuclear explosion, potentially involving Israel and South Africa."
        }
      },
      "record_sha256": "6cdbe8ec2d6d1107ea88fb3346bae01e4cfe01f0e220158b950b0170250ae08c"
    },
    {
      "id": "theory:HIST-29",
      "legacy_id": "HIST-29",
      "kind": "theory",
      "title": "Bender’s alien extraction base",
      "url": "theory-vault.html#HIST-29",
      "summary": "Albert Bender claimed Antarctic aliens used a hidden base while extracting a substance from seawater.",
      "claim": "Albert Bender claimed Antarctic aliens used a hidden base while extracting a substance from seawater.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The published encounter story provides no independently authenticated physical evidence.",
        "limitations": "Distinct named witness narrative, not confirmation of an extraterrestrial installation. Men in Black references belong to this same story, not a separate Antarctic theory."
      },
      "sources": [
        {
          "source_id": "source:9a109068d0e1e0456966",
          "role": "Contemporary review quoting 1962 claimant account",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:9cc07d8d922a6d082e57",
          "role": "Reference history of narrative",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-29",
        "input_record_sha256": "1f4f6551eb3cce8c277ff61378e728a1e694cdead7e4be380cdb751c256a155a",
        "original_fields": {
          "id": "HIST-29",
          "title": "Bender’s alien extraction base",
          "claim": "Albert Bender claimed Antarctic aliens used a hidden base while extracting a substance from seawater.",
          "category": "UFO contact narrative",
          "status": "Unverified",
          "counterevidence": "The published encounter story provides no independently authenticated physical evidence.",
          "sources": [
            {
              "url": "https://borderlandsciences.org/journal/vol/19/n01/Crabb_on_Bender_Three_Men_III.html",
              "role": "Contemporary review quoting 1962 claimant account"
            },
            {
              "url": "https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/bender-albert-k",
              "role": "Reference history of narrative"
            }
          ],
          "limitations": "Distinct named witness narrative, not confirmation of an extraterrestrial installation. Men in Black references belong to this same story, not a separate Antarctic theory.",
          "claim_family": "UFO contact narrative",
          "verification_date": "2026-10-28",
          "verification_scope": "Published source and claim checked; historical hypothesis not independently proven.",
          "source_count": 2,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Albert Bender claimed Antarctic aliens used a hidden base while extracting a substance from seawater."
        }
      },
      "record_sha256": "289f13edd2d1e6bcced232fb9f5503f120e7d79983b045ce2dcd8a5c85e9612e"
    },
    {
      "id": "theory:MOD-001",
      "legacy_id": "MOD-001",
      "kind": "theory",
      "title": "Cabal leaders surrendered to aliens in Antarctica",
      "url": "theory-vault.html#MOD-001",
      "summary": "A 2021 story alleged that financial and political leaders traveled south to surrender to an Earth Alliance and extraterrestrials.",
      "claim": "A 2021 story alleged that financial and political leaders traveled south to surrender to an Earth Alliance and extraterrestrials.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The supporting tweets were fabricated; a real tourist visit by one named person does not validate the narrative.",
        "limitations": "The supporting tweets were fabricated; a real tourist visit by one named person does not validate the narrative."
      },
      "sources": [
        {
          "source_id": "source:9c6cd2c83627a4a95a3b",
          "role": "fact-check",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-001",
        "input_record_sha256": "c596ccb752680b1a62c133feb03a27b933c8cc1c8fd41a0029cefda4f30b49e9",
        "original_fields": {
          "id": "MOD-001",
          "title": "Cabal leaders surrendered to aliens in Antarctica",
          "claim": "A 2021 story alleged that financial and political leaders traveled south to surrender to an Earth Alliance and extraterrestrials.",
          "category": "political conspiracy",
          "status": "debunked",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2021/12/fact-check-cabal-leaders-did-not-go-to-antarctica-to-surrender-to-extraterrestrials.html",
              "role": "fact-check"
            }
          ],
          "limitations": "The supporting tweets were fabricated; a real tourist visit by one named person does not validate the narrative.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The supporting tweets were fabricated; a real tourist visit by one named person does not validate the narrative.",
          "claim_family": "cabal leaders surrendered to aliens in antarctica",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A 2021 story alleged that financial and political leaders traveled south to surrender to an Earth Alliance and extraterrestrials."
        }
      },
      "record_sha256": "10a8af27a0c0bc705002be4859bce23cfc1f17a8583e344b3b0145c53ae69ed0"
    },
    {
      "id": "theory:MOD-002",
      "legacy_id": "MOD-002",
      "kind": "theory",
      "title": "China handed Antarctic bases to an Earth Alliance",
      "url": "theory-vault.html#MOD-002",
      "summary": "Michael Salla relayed a medium's claimed message that China transferred former Dark Fleet bases for interstellar fleet production.",
      "claim": "Michael Salla relayed a medium's claimed message that China transferred former Dark Fleet bases for interstellar fleet production.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The source presents channelled information, not independently authenticated diplomatic or engineering records. Distinct from the generic Dark Fleet claim because it alleges a specific 2021 transfer.",
        "limitations": "The source presents channelled information, not independently authenticated diplomatic or engineering records. Distinct from the generic Dark Fleet claim because it alleges a specific 2021 transfer."
      },
      "sources": [
        {
          "source_id": "source:46c1dbef1b0d8ed133a9",
          "role": "claimant publication",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-002",
        "input_record_sha256": "2b6da90fb5ee72e2ab3127bd6e438571e90a5ff3d724d2d8eea9b07b78543533",
        "original_fields": {
          "id": "MOD-002",
          "title": "China handed Antarctic bases to an Earth Alliance",
          "claim": "Michael Salla relayed a medium's claimed message that China transferred former Dark Fleet bases for interstellar fleet production.",
          "category": "secret technology",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://exopolitics.org/china-gives-dark-fleet-antarctica-bases-to-earth-alliance-to-build-space-fleets/",
              "role": "claimant publication"
            }
          ],
          "limitations": "The source presents channelled information, not independently authenticated diplomatic or engineering records. Distinct from the generic Dark Fleet claim because it alleges a specific 2021 transfer.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The source presents channelled information, not independently authenticated diplomatic or engineering records. Distinct from the generic Dark Fleet claim because it alleges a specific 2021 transfer.",
          "claim_family": "china handed antarctic bases to an earth alliance",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Michael Salla relayed a medium's claimed message that China transferred former Dark Fleet bases for interstellar fleet production."
        }
      },
      "record_sha256": "c8f16300f85431b99dc64f0aa6e6e6ff9a18b51a2be4236b25dc19983c6d07c0"
    },
    {
      "id": "theory:MOD-003",
      "legacy_id": "MOD-003",
      "kind": "theory",
      "title": "2016 Antarctic aerial battle during elite escape",
      "url": "theory-vault.html#MOD-003",
      "summary": "Corey Goode alleged that elite groups seeking refuge from a solar catastrophe attempted escape and became involved in a battle over Antarctica.",
      "claim": "Corey Goode alleged that elite groups seeking refuge from a solar catastrophe attempted escape and became involved in a battle over Antarctica.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated battle records or physical evidence are supplied; artist depictions are not photographs.",
        "limitations": "No authenticated battle records or physical evidence are supplied; artist depictions are not photographs."
      },
      "sources": [
        {
          "source_id": "source:075d3a8353ebda5daac8",
          "role": "claimant publication",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:075d3a8353ebda5daac8",
          "role": "first-party dated account",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-003",
        "input_record_sha256": "c5363380ed6d69e84bafea31b37bf1923e78791962bfcb0fc6ea3648f80fed5b",
        "original_fields": {
          "id": "MOD-003",
          "title": "2016 Antarctic aerial battle during elite escape",
          "claim": "Corey Goode alleged that elite groups seeking refuge from a solar catastrophe attempted escape and became involved in a battle over Antarctica.",
          "category": "secret technology",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://exopolitics.org/secret-space-programs-battle-over-antarctic-skies-during-global-elite-exodus/",
              "role": "claimant publication"
            },
            {
              "url": "https://exopolitics.org/secret-space-programs-battle-over-antarctic-skies-during-global-elite-exodus/",
              "role": "first-party dated account"
            }
          ],
          "limitations": "No authenticated battle records or physical evidence are supplied; artist depictions are not photographs.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "No authenticated battle records or physical evidence are supplied; artist depictions are not photographs.",
          "claim_family": "2016 antarctic aerial battle during elite escape",
          "source_count": 2,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Corey Goode alleged that elite groups seeking refuge from a solar catastrophe attempted escape and became involved in a battle over Antarctica."
        }
      },
      "record_sha256": "74d8b3c6c1ea0c4832b1ea3b7e14e09f4489d3e1cb77c37445bdad3024179b75"
    },
    {
      "id": "theory:MOD-004",
      "legacy_id": "MOD-004",
      "kind": "theory",
      "title": "Project Iceworm secretly armed Antarctica",
      "url": "theory-vault.html#MOD-004",
      "summary": "Goode and Salla claimed the Arctic Project Iceworm also placed weapons and military research facilities under Antarctic ice.",
      "claim": "Goode and Salla claimed the Arctic Project Iceworm also placed weapons and military research facilities under Antarctic ice.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The existence of a real Greenland project and Antarctic thermal caverns does not establish an Antarctic weapons program.",
        "limitations": "The existence of a real Greenland project and Antarctic thermal caverns does not establish an Antarctic weapons program."
      },
      "sources": [
        {
          "source_id": "source:48cc216ded8bd1310460",
          "role": "claimant publication",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-004",
        "input_record_sha256": "a735d7168472819e9529dd6ba3bc733c592771441411983388c978f2def4fdef",
        "original_fields": {
          "id": "MOD-004",
          "title": "Project Iceworm secretly armed Antarctica",
          "claim": "Goode and Salla claimed the Arctic Project Iceworm also placed weapons and military research facilities under Antarctic ice.",
          "category": "military conspiracy",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://michaelsalla.com/2017/10/13/illegal-military-research-and-development-in-antarctica/?amp=1",
              "role": "claimant publication"
            }
          ],
          "limitations": "The existence of a real Greenland project and Antarctic thermal caverns does not establish an Antarctic weapons program.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The existence of a real Greenland project and Antarctic thermal caverns does not establish an Antarctic weapons program.",
          "claim_family": "project iceworm secretly armed antarctica",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "Goode and Salla claimed the Arctic Project Iceworm also placed weapons and military research facilities under Antarctic ice."
        }
      },
      "record_sha256": "77bec6c9bbe435b6ea570edfa0806e70f81f2a5c9cb0d330d0b6d8a0e54f21c4"
    },
    {
      "id": "theory:MOD-005",
      "legacy_id": "MOD-005",
      "kind": "theory",
      "title": "Antarctic-region sentient black goo",
      "url": "theory-vault.html#MOD-005",
      "summary": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research.",
      "claim": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied.",
        "limitations": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied."
      },
      "sources": [
        {
          "source_id": "source:677351e5d067064f3811",
          "role": "claimant interview",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c86fea83ebd1dec28a9b",
          "role": "Antarctica-specific claimant interview",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:7fd47764041af0907955",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-005",
        "input_record_sha256": "e720a310de2b34cc68a1cc2a9c09574200b198cde8268b267409380327b0eea8",
        "original_fields": {
          "id": "MOD-005",
          "title": "Antarctic-region sentient black goo",
          "claim": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research.",
          "category": "alien folklore",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://rumble.com/v1k36ia-bases-46-harald-kautz-vella-part-2.html",
              "role": "claimant interview"
            },
            {
              "url": "https://timefordisclosure.com/antarcticas-alien-black-goo-e-t-bases-and-secret-societies-new-2021-brad-olsen/",
              "role": "Antarctica-specific claimant interview"
            },
            {
              "url": "https://pod.wave.co/podcast/that-ufo-podcast/what-is-hidden-beneath-antarctica-ufos-secret-bases-and-hollow-earth-with-brad-olsen",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied.",
          "claim_family": "antarctic-region sentient black goo",
          "source_count": 3,
          "related_variants": [
            {
              "title": "Sentient Black Goo",
              "claim": "A sentient substance recovered near Antarctica is linked to secret weapons research.",
              "status": "Unverified narrative; Thule/South Sandwich setting is not continental Antarctica."
            }
          ],
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research."
        }
      },
      "record_sha256": "3e3b75f46adaa82c13d1db58b6770784e155ee302892fe56f7e283bb3cab02dc"
    },
    {
      "id": "theory:MOD-006",
      "legacy_id": "MOD-006",
      "kind": "theory",
      "title": "Antarctic fleet boarded Oumuamua",
      "url": "theory-vault.html#MOD-006",
      "summary": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery.",
      "claim": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story.",
        "limitations": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story."
      },
      "sources": [
        {
          "source_id": "source:b50b0c8a27145d8a477a",
          "role": "claimant publication",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-006",
        "input_record_sha256": "c3f282dae18f1e8c8afe97463a1f94950dc303146ad0114fa2aad6b217ef3f9f",
        "original_fields": {
          "id": "MOD-006",
          "title": "Antarctic fleet boarded Oumuamua",
          "claim": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery.",
          "category": "secret space program",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://exopolitics.org/navy-insiders-corroborate-secret-antarctic-space-fleet-mission-to-oumuamua/",
              "role": "claimant publication"
            }
          ],
          "limitations": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story.",
          "claim_family": "antarctic fleet boarded oumuamua",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery."
        }
      },
      "record_sha256": "5d942d543fc9ef2d1bdda98ff0385777c82183d1a411fcfedf88e381265b6d9e"
    },
    {
      "id": "theory:MOD-007",
      "legacy_id": "MOD-007",
      "kind": "theory",
      "title": "Rothschild Island is privately owned by its namesake family",
      "url": "theory-vault.html#MOD-007",
      "summary": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name.",
      "claim": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Naming an island in honor of a patron is not ownership. Avoid repeating insinuations about an ethnic or religious group as evidence.",
        "limitations": "Naming an island in honor of a patron is not ownership. Avoid repeating insinuations about an ethnic or religious group as evidence."
      },
      "sources": [
        {
          "source_id": "source:86017d8322cac3e6b76f",
          "role": "fact-check",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-007",
        "input_record_sha256": "0685756b41db3930e28f45da37d6e13a62b76a130ce299530dda517bb6389cee",
        "original_fields": {
          "id": "MOD-007",
          "title": "Rothschild Island is privately owned by its namesake family",
          "claim": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name.",
          "category": "ownership conspiracy",
          "status": "debunked",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2023/11/fact-check-rothschild-family-did-not-buy-does-not-own-antarcticas-rothschild-island.html",
              "role": "fact-check"
            }
          ],
          "limitations": "Naming an island in honor of a patron is not ownership. Avoid repeating insinuations about an ethnic or religious group as evidence.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "Naming an island in honor of a patron is not ownership. Avoid repeating insinuations about an ethnic or religious group as evidence.",
          "claim_family": "rothschild island is privately owned by its namesake family",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name."
        }
      },
      "record_sha256": "b7b17df9cfe9d72463ad98d9d52fbd832ad1091ab6926e326b2e22eef341fee7"
    },
    {
      "id": "theory:MOD-008",
      "legacy_id": "MOD-008",
      "kind": "theory",
      "title": "Oates Land alien face carving",
      "url": "theory-vault.html#MOD-008",
      "summary": "A face-like Antarctic satellite formation was interpreted as an alien face or constructed monument.",
      "claim": "A face-like Antarctic satellite formation was interpreted as an alien face or constructed monument.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The cited page documents the claim at 72°00′36″S, 168°34′53″E, not archaeology. Facial resemblance alone cannot establish construction.",
        "limitations": "The cited page documents the claim at 72°00′36″S, 168°34′53″E, not archaeology. Facial resemblance alone cannot establish construction."
      },
      "sources": [
        {
          "source_id": "source:0773287b0ba020e7416b",
          "role": "claim documentation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-008",
        "input_record_sha256": "660258f74267dc4a70270f1f3350835e310e2170eeaf579e46414ffa501fb9da",
        "original_fields": {
          "id": "MOD-008",
          "title": "Oates Land alien face carving",
          "claim": "A face-like Antarctic satellite formation was interpreted as an alien face or constructed monument.",
          "category": "image interpretation",
          "status": "unsupported interpretation",
          "sources": [
            {
              "url": "https://www.ninefornews.nl/onderzoeker-spot-gezicht-antarctica/",
              "role": "claim documentation"
            }
          ],
          "limitations": "The cited page documents the claim at 72°00′36″S, 168°34′53″E, not archaeology. Facial resemblance alone cannot establish construction.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The cited page documents the claim at 72°00′36″S, 168°34′53″E, not archaeology. Facial resemblance alone cannot establish construction.",
          "claim_family": "oates land alien face carving",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A face-like Antarctic satellite formation was interpreted as an alien face or constructed monument."
        }
      },
      "record_sha256": "2c1c6948e2963ff4a71739bc39ff539dffec0e683bdc6c18661fa79f7a793bc1"
    },
    {
      "id": "theory:MOD-009",
      "legacy_id": "MOD-009",
      "kind": "theory",
      "title": "Giant door near Showa Station",
      "url": "theory-vault.html#MOD-009",
      "summary": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice.",
      "claim": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The thread contains incompatible explanations. A satellite resemblance does not show a functioning doorway; no on-site investigation is provided.",
        "limitations": "The thread contains incompatible explanations. A satellite resemblance does not show a functioning doorway; no on-site investigation is provided."
      },
      "sources": [
        {
          "source_id": "source:88f90c097476475af121",
          "role": "community claim",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:e13e8ba078ef8fa978a5",
          "role": "report quoting glaciologist sea-ice explanation; rolling archive",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-009",
        "input_record_sha256": "51119dc00647fb1a4592ab7eb20ab641afc63a511c8f7701c2756bb9caa8dd8f",
        "original_fields": {
          "id": "MOD-009",
          "title": "Giant door near Showa Station",
          "claim": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice.",
          "category": "image interpretation",
          "status": "unsupported interpretation",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/1bjxevc",
              "role": "community claim"
            },
            {
              "url": "https://www.streetviewfun.com/category/country/antarctica/",
              "role": "report quoting glaciologist sea-ice explanation; rolling archive"
            }
          ],
          "limitations": "The thread contains incompatible explanations. A satellite resemblance does not show a functioning doorway; no on-site investigation is provided.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The thread contains incompatible explanations. A satellite resemblance does not show a functioning doorway; no on-site investigation is provided.",
          "claim_family": "giant door near showa station",
          "source_count": 2,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice."
        }
      },
      "record_sha256": "c1d37f8d6440cbcfff5561b19fa7301ac013ff0c004eb58984b1545d0f65c6cb"
    },
    {
      "id": "theory:MOD-010",
      "legacy_id": "MOD-010",
      "kind": "theory",
      "title": "Giant Antarctic staircase or landing installation",
      "url": "theory-vault.html#MOD-010",
      "summary": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain.",
      "claim": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "These are competing readings of one image, consolidated as one entry rather than counted separately.",
        "limitations": "These are competing readings of one image, consolidated as one entry rather than counted separately."
      },
      "sources": [
        {
          "source_id": "source:23b2862fc57ef9916198",
          "role": "claim documentation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-010",
        "input_record_sha256": "feac027064968c47c49b34c56603a07fc746a0cdd13b722753dc45c66198ce8b",
        "original_fields": {
          "id": "MOD-010",
          "title": "Giant Antarctic staircase or landing installation",
          "claim": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain.",
          "category": "image interpretation",
          "status": "unsupported interpretation",
          "sources": [
            {
              "url": "https://satnews.com/2017/01/12/google-earth-images-of-antarctica-stairs-to-where/",
              "role": "claim documentation"
            }
          ],
          "limitations": "These are competing readings of one image, consolidated as one entry rather than counted separately.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "These are competing readings of one image, consolidated as one entry rather than counted separately.",
          "claim_family": "giant antarctic staircase or landing installation",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain."
        }
      },
      "record_sha256": "169e6d833ff710c8d1a04a255729e16ab04e5fb3af4fd91fee5f196a38079457"
    },
    {
      "id": "theory:MOD-011",
      "legacy_id": "MOD-011",
      "kind": "theory",
      "title": "King George Island disappearing cave cover-up",
      "url": "theory-vault.html#MOD-011",
      "summary": "Changing imagery of a cave near 61.99°S, 58.02°W was attributed to concealment of an artificial entrance.",
      "claim": "Changing imagery of a cave near 61.99°S, 58.02°W was attributed to concealment of an artificial entrance.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Snow cover and seasonal changes are ordinary alternatives; the cited discussion does not establish intervention.",
        "limitations": "Snow cover and seasonal changes are ordinary alternatives; the cited discussion does not establish intervention."
      },
      "sources": [
        {
          "source_id": "source:61146f3dd303e1a77d41",
          "role": "claim documentation and alternative explanation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-011",
        "input_record_sha256": "75da70b6acbe0a9800a22b1170b2723697d544640167e31949e271e509d950ab",
        "original_fields": {
          "id": "MOD-011",
          "title": "King George Island disappearing cave cover-up",
          "claim": "Changing imagery of a cave near 61.99°S, 58.02°W was attributed to concealment of an artificial entrance.",
          "category": "image interpretation",
          "status": "unsupported interpretation",
          "sources": [
            {
              "url": "https://nerdbot.com/2022/01/31/mysterious-antarctica-cave-resurfaced-google-earth/",
              "role": "claim documentation and alternative explanation"
            }
          ],
          "limitations": "Snow cover and seasonal changes are ordinary alternatives; the cited discussion does not establish intervention.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "Snow cover and seasonal changes are ordinary alternatives; the cited discussion does not establish intervention.",
          "claim_family": "king george island disappearing cave cover-up",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Changing imagery of a cave near 61.99°S, 58.02°W was attributed to concealment of an artificial entrance."
        }
      },
      "record_sha256": "da4210df429bd02268c2bbbf8fbb68f4ca954a0b1568d149a2261e035fd786a6"
    },
    {
      "id": "theory:MOD-012",
      "legacy_id": "MOD-012",
      "kind": "theory",
      "title": "Tanks guard an Antarctic crashed UFO",
      "url": "theory-vault.html#MOD-012",
      "summary": "A fringe blog interpreted satellite objects near 77°49′47.46″S, 166°50′22.31″E as tanks guarding a craft.",
      "claim": "A fringe blog interpreted satellite objects near 77°49′47.46″S, 166°50′22.31″E as tanks guarding a craft.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The page itself contains objections about buildings, scale, and coordinates. No verified vehicles or recovered craft are established.",
        "limitations": "The page itself contains objections about buildings, scale, and coordinates. No verified vehicles or recovered craft are established."
      },
      "sources": [
        {
          "source_id": "source:3db6c4b39ec8b832a118",
          "role": "claimant publication",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-012",
        "input_record_sha256": "a9360d0074aa26a69962b84c1da60729111fd496dbfb0ba4484eabe5cf9e9406",
        "original_fields": {
          "id": "MOD-012",
          "title": "Tanks guard an Antarctic crashed UFO",
          "claim": "A fringe blog interpreted satellite objects near 77°49′47.46″S, 166°50′22.31″E as tanks guarding a craft.",
          "category": "image interpretation",
          "status": "unsupported interpretation",
          "sources": [
            {
              "url": "https://www.ufosightingsfootage.uk/2018/06/antarctica-anomalies.html",
              "role": "claimant publication"
            }
          ],
          "limitations": "The page itself contains objections about buildings, scale, and coordinates. No verified vehicles or recovered craft are established.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The page itself contains objections about buildings, scale, and coordinates. No verified vehicles or recovered craft are established.",
          "claim_family": "tanks guard an antarctic crashed ufo",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A fringe blog interpreted satellite objects near 77°49′47.46″S, 166°50′22.31″E as tanks guarding a craft."
        }
      },
      "record_sha256": "39f4ec3c74aa27aebfe57158a1d492f541f505981bd89f73a5a99ee995ef2557"
    },
    {
      "id": "theory:MOD-013",
      "legacy_id": "MOD-013",
      "kind": "theory",
      "title": "Swastika-shaped Antarctic megalithic city",
      "url": "theory-vault.html#MOD-013",
      "summary": "A 2018 UFOmania video alleged satellite footage showed a swastika-shaped structure and concealed ancient city.",
      "claim": "A 2018 UFOmania video alleged satellite footage showed a swastika-shaped structure and concealed ancient city.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction.",
        "limitations": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction."
      },
      "sources": [
        {
          "source_id": "source:9ce7dfe67d257ed9f52e",
          "role": "claimant video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-013",
        "input_record_sha256": "d4c08e87bac7152911b6a75d650c86a2e67432fa42791d7cea8d000820c005dd",
        "original_fields": {
          "id": "MOD-013",
          "title": "Swastika-shaped Antarctic megalithic city",
          "claim": "A 2018 UFOmania video alleged satellite footage showed a swastika-shaped structure and concealed ancient city.",
          "category": "image interpretation",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://www.youtube.com/watch?v=7zLESAsAmZY",
              "role": "claimant video"
            }
          ],
          "limitations": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction.",
          "claim_family": "swastika-shaped antarctic megalithic city",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A 2018 UFOmania video alleged satellite footage showed a swastika-shaped structure and concealed ancient city."
        }
      },
      "record_sha256": "4eb71ecb049490c979eb1f704109f5ec9314a9ba2475d716c5e4c602f50f13fd"
    },
    {
      "id": "theory:MOD-014",
      "legacy_id": "MOD-014",
      "kind": "theory",
      "title": "Strava traces reveal underground Antarctic bases",
      "url": "theory-vault.html#MOD-014",
      "summary": "Fitness heatmap lines were interpreted as activity inside undisclosed subterranean installations.",
      "claim": "Fitness heatmap lines were interpreted as activity inside undisclosed subterranean installations.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "GPS traces do not directly reveal tunnels or depth. Surface operations, travel and data errors require examination before assigning a cause.",
        "limitations": "GPS traces do not directly reveal tunnels or depth. Surface operations, travel and data errors require examination before assigning a cause."
      },
      "sources": [
        {
          "source_id": "source:f43b482c5a36fc9a0df8",
          "role": "community claim",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-014",
        "input_record_sha256": "8f862eb9399c1207622f5b19bc0437d0ae700e85e326b4a575649e34bd618cb7",
        "original_fields": {
          "id": "MOD-014",
          "title": "Strava traces reveal underground Antarctic bases",
          "claim": "Fitness heatmap lines were interpreted as activity inside undisclosed subterranean installations.",
          "category": "data interpretation",
          "status": "unsupported interpretation",
          "sources": [
            {
              "url": "https://www.reddit.com/r/CosmicDisclosure/comments/9exnzl/antarctica_base_proof_via_google_earth_strava/",
              "role": "community claim"
            }
          ],
          "limitations": "GPS traces do not directly reveal tunnels or depth. Surface operations, travel and data errors require examination before assigning a cause.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "GPS traces do not directly reveal tunnels or depth. Surface operations, travel and data errors require examination before assigning a cause.",
          "claim_family": "strava traces reveal underground antarctic bases",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Fitness heatmap lines were interpreted as activity inside undisclosed subterranean installations."
        }
      },
      "record_sha256": "5f5e3dd5056f0a3b3a83c8f759e5cd7e5e901aa2af6fff547e720f4f6561e241"
    },
    {
      "id": "theory:MOD-015",
      "legacy_id": "MOD-015",
      "kind": "theory",
      "title": "Antarctic retrieval photos",
      "url": "theory-vault.html#MOD-015",
      "summary": "Images allegedly show a historic UFO recovery.",
      "claim": "Images allegedly show a historic UFO recovery.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Modern artwork, not photographs.",
        "limitations": "Modern artwork, not photographs."
      },
      "sources": [
        {
          "source_id": "source:1f4e3448ecbe96e6b06e",
          "role": "fact-check",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-015",
        "input_record_sha256": "d1191de93ad11627f25f08bebec05a45fb6e116dbdb8dc4edb3a03c32b2b36bd",
        "original_fields": {
          "id": "MOD-015",
          "title": "Antarctic retrieval photos",
          "claim": "Images allegedly show a historic UFO recovery.",
          "category": "image hoax",
          "status": "debunked",
          "sources": [
            {
              "url": "https://www.yahoo.com/news/fact-check-antarctic-ufo-images-171446863.html",
              "role": "fact-check"
            }
          ],
          "limitations": "Modern artwork, not photographs.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "Modern artwork, not photographs.",
          "claim_family": "antarctic retrieval photos",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Images allegedly show a historic UFO recovery."
        }
      },
      "record_sha256": "67cbd608306fa81b886d96d1857acceaa1ecd89a76082c541bc8919289d9829d"
    },
    {
      "id": "theory:MOD-016",
      "legacy_id": "MOD-016",
      "kind": "theory",
      "title": "Black structure in an iceberg proves a lost city",
      "url": "theory-vault.html#MOD-016",
      "summary": "A viral article presented an apparent black structure inside ice as evidence of an enormous buried civilization.",
      "claim": "A viral article presented an apparent black structure inside ice as evidence of an enormous buried civilization.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The particular article and images were not evidence of a discovery. The conclusion should not be generalized into a claim that every subglacial feature is fully known.",
        "limitations": "The particular article and images were not evidence of a discovery. The conclusion should not be generalized into a claim that every subglacial feature is fully known."
      },
      "sources": [
        {
          "source_id": "source:bfeae9375f9e85b6363d",
          "role": "fact-check",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-016",
        "input_record_sha256": "74601d34208b3d2acaa6bad627c2e1d5fc95806a0e36d1c50b2b99d1391f6575",
        "original_fields": {
          "id": "MOD-016",
          "title": "Black structure in an iceberg proves a lost city",
          "claim": "A viral article presented an apparent black structure inside ice as evidence of an enormous buried civilization.",
          "category": "image hoax",
          "status": "debunked",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2023/01/fact-check-no-massive-structures-or-lost-city-below-antarctica.html",
              "role": "fact-check"
            }
          ],
          "limitations": "The particular article and images were not evidence of a discovery. The conclusion should not be generalized into a claim that every subglacial feature is fully known.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The particular article and images were not evidence of a discovery. The conclusion should not be generalized into a claim that every subglacial feature is fully known.",
          "claim_family": "black structure in an iceberg proves a lost city",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A viral article presented an apparent black structure inside ice as evidence of an enormous buried civilization."
        }
      },
      "record_sha256": "9f35da34527dafad61628e0f985f20a6636101d527a439d74ab1a48bd0c11f5f"
    },
    {
      "id": "theory:MOD-017",
      "legacy_id": "MOD-017",
      "kind": "theory",
      "title": "Eltanin seabed antenna",
      "url": "theory-vault.html#MOD-017",
      "summary": "The regular object photographed by USNS Eltanin in 1964 was interpreted as alien machinery or an antenna.",
      "claim": "The regular object photographed by USNS Eltanin in 1964 was interpreted as alien machinery or an antenna.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The standard identification is a carnivorous sponge, Chondrocladia concrescens. This is Southern Ocean expedition lore, not a land feature.",
        "limitations": "The standard identification is a carnivorous sponge, Chondrocladia concrescens. This is Southern Ocean expedition lore, not a land feature."
      },
      "sources": [
        {
          "source_id": "source:c2b24de252552701904a",
          "role": "reference account tracing original photograph and identification",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-017",
        "input_record_sha256": "35ed0ce4967015382641143c57a40bffa640bb27712afbb2fc9dd2fb48c024a1",
        "original_fields": {
          "id": "MOD-017",
          "title": "Eltanin seabed antenna",
          "claim": "The regular object photographed by USNS Eltanin in 1964 was interpreted as alien machinery or an antenna.",
          "category": "image interpretation",
          "status": "natural identification",
          "sources": [
            {
              "url": "https://en.wikipedia.org/wiki/Eltanin_Antenna",
              "role": "reference account tracing original photograph and identification"
            }
          ],
          "limitations": "The standard identification is a carnivorous sponge, Chondrocladia concrescens. This is Southern Ocean expedition lore, not a land feature.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The standard identification is a carnivorous sponge, Chondrocladia concrescens. This is Southern Ocean expedition lore, not a land feature.",
          "claim_family": "eltanin seabed antenna",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The regular object photographed by USNS Eltanin in 1964 was interpreted as alien machinery or an antenna."
        }
      },
      "record_sha256": "b38af6158d40a88fbcb89b0ee5d4f4959f0ad6f4d24f99f0ff1cad4a7416f60b"
    },
    {
      "id": "theory:MOD-018",
      "legacy_id": "MOD-018",
      "kind": "theory",
      "title": "Volcanoes alone explain Antarctic ice loss",
      "url": "theory-vault.html#MOD-018",
      "summary": "Online arguments claim Antarctic melting is entirely volcanic and therefore unrelated to anthropogenic climate change.",
      "claim": "Online arguments claim Antarctic melting is entirely volcanic and therefore unrelated to anthropogenic climate change.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Geothermal heat exists but does not explain the recent observed regional loss; ocean and atmospheric warming must be accounted for.",
        "limitations": "Geothermal heat exists but does not explain the recent observed regional loss; ocean and atmospheric warming must be accounted for."
      },
      "sources": [
        {
          "source_id": "source:a9b9cb03676ee505eefd",
          "role": "fact-check with researcher interviews",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-018",
        "input_record_sha256": "5a46b019f95b6d69b8ab0efbb6e06d3cb956b4e318421ce78c135b385a36fddc",
        "original_fields": {
          "id": "MOD-018",
          "title": "Volcanoes alone explain Antarctic ice loss",
          "claim": "Online arguments claim Antarctic melting is entirely volcanic and therefore unrelated to anthropogenic climate change.",
          "category": "scientific misinformation",
          "status": "contradicted by evidence",
          "sources": [
            {
              "url": "https://prod-ss.aap.com.au/factcheck/scientists-pour-cold-water-on-volcanic-glacier-melting-claims/",
              "role": "fact-check with researcher interviews"
            }
          ],
          "limitations": "Geothermal heat exists but does not explain the recent observed regional loss; ocean and atmospheric warming must be accounted for.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "Geothermal heat exists but does not explain the recent observed regional loss; ocean and atmospheric warming must be accounted for.",
          "claim_family": "volcanoes alone explain antarctic ice loss",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Online arguments claim Antarctic melting is entirely volcanic and therefore unrelated to anthropogenic climate change."
        }
      },
      "record_sha256": "bd0bdf1a1832518da2fee71e64cc59c0a428c53c5ffbfe6921548fa332980097"
    },
    {
      "id": "theory:MOD-019",
      "legacy_id": "MOD-019",
      "kind": "theory",
      "title": "The Antarctic Treaty expires in 2048",
      "url": "theory-vault.html#MOD-019",
      "summary": "The possibility of reviewing the environmental protocol is recast as automatic treaty expiration or unrestricted exploitation.",
      "claim": "The possibility of reviewing the environmental protocol is recast as automatic treaty expiration or unrestricted exploitation.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "2048 is not automatic expiration; distinguish the treaty from the environmental protocol and review provisions.",
        "limitations": "2048 is not automatic expiration; distinguish the treaty from the environmental protocol and review provisions."
      },
      "sources": [
        {
          "source_id": "source:5c7c07a881c516093547",
          "role": "policy explanation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d9b08df723ef5180e0e5",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-019",
        "input_record_sha256": "69961d82aefa11750f4b0a51317adb7acdd54238a9dcfb2ac28ceed1edc7658a",
        "original_fields": {
          "id": "MOD-019",
          "title": "The Antarctic Treaty expires in 2048",
          "claim": "The possibility of reviewing the environmental protocol is recast as automatic treaty expiration or unrestricted exploitation.",
          "category": "policy misconception",
          "status": "incorrect",
          "sources": [
            {
              "url": "https://www.asoc.org/ice-archive/the-antarctic-treaty-what-happens-in-2048/",
              "role": "policy explanation"
            },
            {
              "url": "https://www.ats.aq/e/antarctictreaty.html",
              "role": "Primary institutional context; not proof of the speculative claim"
            }
          ],
          "limitations": "2048 is not automatic expiration; distinguish the treaty from the environmental protocol and review provisions.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "2048 is not automatic expiration; distinguish the treaty from the environmental protocol and review provisions.",
          "claim_family": "the antarctic treaty expires in 2048",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "The possibility of reviewing the environmental protocol is recast as automatic treaty expiration or unrestricted exploitation.",
          "reference_research_leads": {
            "reference_id": "t-treaty-secrecy",
            "items": [
              "Permit requirements",
              "Bans on mining and military activity",
              "Few visitors"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "research_context": [
            {
              "text": "Antarctic Treaty inspection provisions concern designated state observers, not unrestricted access for every tourist. Peaceful scientific use of military personnel or equipment is permitted.",
              "source_url": "https://www.ats.aq/e/antarctictreaty.html"
            }
          ]
        }
      },
      "record_sha256": "126f29bc3b1872a0fa3d8e75b2c7e21a9f3190d7b25f31824ca8cf39dc8f5f95"
    },
    {
      "id": "theory:MOD-020",
      "legacy_id": "MOD-020",
      "kind": "theory",
      "title": "Marie Byrd Land scientists vanished and returned frightened",
      "url": "theory-vault.html#MOD-020",
      "summary": "A witness using the name Brian S. alleged a group of scientists disappeared for two weeks and returned visibly distressed.",
      "claim": "A witness using the name Brian S. alleged a group of scientists disappeared for two weeks and returned visibly distressed.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "An interview verifies that a story was told, not a disappearance. No independently authenticated personnel or rescue records were supplied in the inspected source.",
        "limitations": "An interview verifies that a story was told, not a disappearance. No independently authenticated personnel or rescue records were supplied in the inspected source."
      },
      "sources": [
        {
          "source_id": "source:9b015e37701aea35b274",
          "role": "claimant interview",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:f813dd4a015beb15e8b1",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-020",
        "input_record_sha256": "0a382abfbee790bc6782607d403c53eb1fe7a57f9bfd14c50102e36f6571bc54",
        "original_fields": {
          "id": "MOD-020",
          "title": "Marie Byrd Land scientists vanished and returned frightened",
          "claim": "A witness using the name Brian S. alleged a group of scientists disappeared for two weeks and returned visibly distressed.",
          "category": "witness narrative",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://www.spreaker.com/episode/phenomenon-special-guest-brian-s--53852657",
              "role": "claimant interview"
            },
            {
              "url": "https://thegreatwhitebrotherhood.org/lessons/strange-events-in-antarctica/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "An interview verifies that a story was told, not a disappearance. No independently authenticated personnel or rescue records were supplied in the inspected source.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "An interview verifies that a story was told, not a disappearance. No independently authenticated personnel or rescue records were supplied in the inspected source.",
          "claim_family": "marie byrd land scientists vanished and returned frightened",
          "source_count": 2,
          "related_variants": [
            {
              "title": "Reptilian abduction of missing scientists",
              "claim": "Scientists missing for two weeks were abducted by Antarctic reptilians.",
              "status": "Spiritual-channeling narrative with no authenticated case documentation."
            }
          ],
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A witness using the name Brian S. alleged a group of scientists disappeared for two weeks and returned visibly distressed."
        }
      },
      "record_sha256": "05ebdc1af10298a8549f0e3cc4f729e3bb470f7fdc5cb9e4a85cc183c1b3e9b8"
    },
    {
      "id": "theory:MOD-021",
      "legacy_id": "MOD-021",
      "kind": "theory",
      "title": "Atlantis TV crew filmed ruins and vanished",
      "url": "theory-vault.html#MOD-021",
      "summary": "A story alleges a missing British film crew recorded buried ruins and authorities seized the footage.",
      "claim": "A story alleges a missing British film crew recorded buried ruins and authorities seized the footage.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The retelling connects the story with Raising Atlantis and promotional material. Do not call it a verified disappearance or government seizure; original records remain unverified.",
        "limitations": "The retelling connects the story with Raising Atlantis and promotional material. Do not call it a verified disappearance or government seizure; original records remain unverified."
      },
      "sources": [
        {
          "source_id": "source:d4e0c4eee7892fc51fae",
          "role": "secondary account of claim",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:f813dd4a015beb15e8b1",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-021",
        "input_record_sha256": "94d680e9e00806cb45d37ad9a00bd20877a584ce974c54eb05aec65315b6119e",
        "original_fields": {
          "id": "MOD-021",
          "title": "Atlantis TV crew filmed ruins and vanished",
          "claim": "A story alleges a missing British film crew recorded buried ruins and authorities seized the footage.",
          "category": "media conspiracy",
          "status": "unverified narrative",
          "sources": [
            {
              "url": "https://www.uapdrop.com/l/view/YPBNSJA5lTg.html",
              "role": "secondary account of claim"
            },
            {
              "url": "https://thegreatwhitebrotherhood.org/lessons/strange-events-in-antarctica/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "The retelling connects the story with Raising Atlantis and promotional material. Do not call it a verified disappearance or government seizure; original records remain unverified.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The retelling connects the story with Raising Atlantis and promotional material. Do not call it a verified disappearance or government seizure; original records remain unverified.",
          "claim_family": "atlantis tv crew filmed ruins and vanished",
          "source_count": 2,
          "related_variants": [
            {
              "title": "Suppressed Antarctic film crew",
              "claim": "A film crew was killed after recording prohibited Antarctic discoveries.",
              "status": "Unsubstantiated allegation; source supplies no independently verified incident."
            }
          ],
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A story alleges a missing British film crew recorded buried ruins and authorities seized the footage."
        }
      },
      "record_sha256": "574aa5ed8f67d2718a0c0d1c0cf04ed2cc9b600a420d8161d905d30d449d2a8b"
    },
    {
      "id": "theory:MOD-022",
      "legacy_id": "MOD-022",
      "kind": "theory",
      "title": "Wilkes Land gravity anomaly is alien technology",
      "url": "theory-vault.html#MOD-022",
      "summary": "A real subglacial gravity anomaly is interpreted as an artificial alien object or installation.",
      "claim": "A real subglacial gravity anomaly is interpreted as an artificial alien object or installation.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "A gravity anomaly is not direct imagery of machinery. Natural hypotheses include impact and other geological structures; its exact origin is a separate scientific question.",
        "limitations": "A gravity anomaly is not direct imagery of machinery. Natural hypotheses include impact and other geological structures; its exact origin is a separate scientific question."
      },
      "sources": [
        {
          "source_id": "source:3e893ec5be59797878a6",
          "role": "community claim",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:7c8f2e49beb544a6e133",
          "role": "scientific context, geological alternatives",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-022",
        "input_record_sha256": "f98ce298fe6b7fb55b679578c49effd7c2b2857993e0c2b2d6dc2ab4bc1c82c6",
        "original_fields": {
          "id": "MOD-022",
          "title": "Wilkes Land gravity anomaly is alien technology",
          "claim": "A real subglacial gravity anomaly is interpreted as an artificial alien object or installation.",
          "category": "geophysical interpretation",
          "status": "unsupported interpretation",
          "sources": [
            {
              "url": "https://www.reddit.com/r/UFOB/comments/1i6cnhi",
              "role": "community claim"
            },
            {
              "url": "https://www.livescience.com/planet-earth/antarctica/wilkes-land-crater-the-giant-hole-in-east-antarcticas-gravitational-field-likely-caused-by-a-meteorite",
              "role": "scientific context, geological alternatives"
            }
          ],
          "limitations": "A gravity anomaly is not direct imagery of machinery. Natural hypotheses include impact and other geological structures; its exact origin is a separate scientific question.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "A gravity anomaly is not direct imagery of machinery. Natural hypotheses include impact and other geological structures; its exact origin is a separate scientific question.",
          "claim_family": "wilkes land gravity anomaly is alien technology",
          "source_count": 2,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A real subglacial gravity anomaly is interpreted as an artificial alien object or installation."
        }
      },
      "record_sha256": "fe09a96245666200df3b51e2f1628e1345b181ebaf22b659ca9de04b3f28ab91"
    },
    {
      "id": "theory:MOD-023",
      "legacy_id": "MOD-023",
      "kind": "theory",
      "title": "South Georgia glacier object is a crashed spacecraft",
      "url": "theory-vault.html#MOD-023",
      "summary": "SecureTeam10 interpreted a sliding object and trail near Mount Paget as an alien crash.",
      "claim": "SecureTeam10 interpreted a sliding object and trail near Mount Paget as an alien crash.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Zoomed-out imagery connects the track to avalanche debris. South Georgia is subantarctic, not the Antarctic mainland.",
        "limitations": "Zoomed-out imagery connects the track to avalanche debris. South Georgia is subantarctic, not the Antarctic mainland."
      },
      "sources": [
        {
          "source_id": "source:a825a13de99b889c3094",
          "role": "report documenting claim and geological explanation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-023",
        "input_record_sha256": "59ac7da662452897943b314fd99bc52b856fe27f87af69b7f2058ec0dce49405",
        "original_fields": {
          "id": "MOD-023",
          "title": "South Georgia glacier object is a crashed spacecraft",
          "claim": "SecureTeam10 interpreted a sliding object and trail near Mount Paget as an alien crash.",
          "category": "image interpretation",
          "status": "natural explanation",
          "sources": [
            {
              "url": "https://www.sciencealert.com/google-earth-ufo-crash-totally-normal-avalanche",
              "role": "report documenting claim and geological explanation"
            }
          ],
          "limitations": "Zoomed-out imagery connects the track to avalanche debris. South Georgia is subantarctic, not the Antarctic mainland.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "Zoomed-out imagery connects the track to avalanche debris. South Georgia is subantarctic, not the Antarctic mainland.",
          "claim_family": "south georgia glacier object is a crashed spacecraft",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "SecureTeam10 interpreted a sliding object and trail near Mount Paget as an alien crash."
        }
      },
      "record_sha256": "e6d6180f2da01d736865c5458d639025bb28ddb612f8912c9dc2015c2b512f2a"
    },
    {
      "id": "theory:MOD-024",
      "legacy_id": "MOD-024",
      "kind": "theory",
      "title": "Antarctic hub communicates with ocean plasmoid beings",
      "url": "theory-vault.html#MOD-024",
      "summary": "Jorge Pabon was reported as alleging an Antarctic communications installation links interstellar vehicles and ocean entities.",
      "claim": "Jorge Pabon was reported as alleging an Antarctic communications installation links interstellar vehicles and ocean entities.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated system specification or communications data is supplied. Do not merge automatically with IceCube allegations; the named account has a different claimed interlocutor.",
        "limitations": "No authenticated system specification or communications data is supplied. Do not merge automatically with IceCube allegations; the named account has a different claimed interlocutor."
      },
      "sources": [
        {
          "source_id": "source:1f7a09109f646fc7e07b",
          "role": "community documentation of interview",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-024",
        "input_record_sha256": "c41665411cace54c392ff9536da24a3a2b945e9efdb655869798a2ec0dfba7ab",
        "original_fields": {
          "id": "MOD-024",
          "title": "Antarctic hub communicates with ocean plasmoid beings",
          "claim": "Jorge Pabon was reported as alleging an Antarctic communications installation links interstellar vehicles and ocean entities.",
          "category": "secret technology",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://www.reddit.com/r/UFOs/comments/1q13w11/this_army_whistleblower_just_alleged_that_a/",
              "role": "community documentation of interview"
            }
          ],
          "limitations": "No authenticated system specification or communications data is supplied. Do not merge automatically with IceCube allegations; the named account has a different claimed interlocutor.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "No authenticated system specification or communications data is supplied. Do not merge automatically with IceCube allegations; the named account has a different claimed interlocutor.",
          "claim_family": "antarctic hub communicates with ocean plasmoid beings",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Jorge Pabon was reported as alleging an Antarctic communications installation links interstellar vehicles and ocean entities."
        }
      },
      "record_sha256": "5fcfdd8d8b4c9bf948727b2463dc2e2ad23a48d7bec3a223ad93bf010b8a8861"
    },
    {
      "id": "theory:MOD-025",
      "legacy_id": "MOD-025",
      "kind": "theory",
      "title": "Argentina–Antarctica underground maglev network",
      "url": "theory-vault.html#MOD-025",
      "summary": "A Katharine Milano interview narrative alleges covert maglev tunnels connecting Argentina and Antarctica.",
      "claim": "A Katharine Milano interview narrative alleges covert maglev tunnels connecting Argentina and Antarctica.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The podcast description expressly says the personal accounts are not independently verified. No engineering survey or tunnel records are supplied.",
        "limitations": "The podcast description expressly says the personal accounts are not independently verified. No engineering survey or tunnel records are supplied."
      },
      "sources": [
        {
          "source_id": "source:e6d9cc2227327084f1b7",
          "role": "dated claimant podcast description, 2026-10-12",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#MOD-025",
        "input_record_sha256": "7153099eb1dff0216b8b4c2acbaddcbc68bd6c7aa0254c203b24713c72a51e97",
        "original_fields": {
          "id": "MOD-025",
          "title": "Argentina–Antarctica underground maglev network",
          "claim": "A Katharine Milano interview narrative alleges covert maglev tunnels connecting Argentina and Antarctica.",
          "category": "secret infrastructure",
          "status": "unverified allegation",
          "sources": [
            {
              "url": "https://podcasts.apple.com/at/podcast/dark-fleet-headquarters-falls-space-force-mission-in/id1532839037?i=1000795937196",
              "role": "dated claimant podcast description, 2026-10-12"
            }
          ],
          "limitations": "The podcast description expressly says the personal accounts are not independently verified. No engineering survey or tunnel records are supplied.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The podcast description expressly says the personal accounts are not independently verified. No engineering survey or tunnel records are supplied.",
          "claim_family": "argentina–antarctica underground maglev network",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A Katharine Milano interview narrative alleges covert maglev tunnels connecting Argentina and Antarctica."
        }
      },
      "record_sha256": "e3a6ec6228b2f279262efb50194373fd2554b8519a626419cea03418ec6ad023"
    },
    {
      "id": "theory:THR-001",
      "legacy_id": "THR-001",
      "kind": "theory",
      "title": "Ningen",
      "url": "theory-vault.html#THR-001",
      "summary": "Giant pale humanoid creatures inhabit Antarctic waters.",
      "claim": "Giant pale humanoid creatures inhabit Antarctic waters.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Modern internet folklore; no verified organism.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:7a7291af4602b8afb814",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-001",
        "input_record_sha256": "d71d345eaadb644be671f20e3662de9ecec5d37594cf7e5e06677cb81aa7dbf3",
        "original_fields": {
          "id": "THR-001",
          "title": "Ningen",
          "claim": "Giant pale humanoid creatures inhabit Antarctic waters.",
          "category": "folklore",
          "status": "Modern internet folklore; no verified organism.",
          "sources": [
            {
              "url": "https://www.shimajournal.plate.media/issues/v14n1/10.-Greenland-and-Hayward-Shima-v14n1.pdf",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Modern internet folklore; no verified organism.",
          "verification_date": "2026-10-28",
          "claim_family": "ningen",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Giant pale humanoid creatures inhabit Antarctic waters."
        }
      },
      "record_sha256": "9ac6e509b3a374da8998022ad1a1327c99b45d1803086f65ce435fa45a12b5f1"
    },
    {
      "id": "theory:THR-002",
      "legacy_id": "THR-002",
      "kind": "theory",
      "title": "Organism 46-B",
      "url": "theory-vault.html#THR-002",
      "summary": "Russian researchers encountered a dangerous intelligent cephalopod beneath Lake Vostok.",
      "claim": "Russian researchers encountered a dangerous intelligent cephalopod beneath Lake Vostok.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Unverified urban legend, not a scientific discovery.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:c959b3495ddcc5e1a207",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-002",
        "input_record_sha256": "3f74239d555228cd96d42dc7c1dff10ed4a573be52ab797580a472d31d7a6e3a",
        "original_fields": {
          "id": "THR-002",
          "title": "Organism 46-B",
          "claim": "Russian researchers encountered a dangerous intelligent cephalopod beneath Lake Vostok.",
          "category": "cryptid",
          "status": "Unverified urban legend, not a scientific discovery.",
          "sources": [
            {
              "url": "https://thefilmco-op.org/organism-46-b-the-unseen/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Unverified urban legend, not a scientific discovery.",
          "verification_date": "2026-10-28",
          "claim_family": "organism 46-b",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Russian researchers encountered a dangerous intelligent cephalopod beneath Lake Vostok."
        }
      },
      "record_sha256": "b9def9b71befa39fa77f17ba2bd409ac5c39fe68d693fd02b3aa079020c41c11"
    },
    {
      "id": "theory:THR-003",
      "legacy_id": "THR-003",
      "kind": "theory",
      "title": "Hotheaded Naked Ice Borer",
      "url": "theory-vault.html#THR-003",
      "summary": "Heat-producing burrowing animals melt Antarctic ice and eat penguins.",
      "claim": "Heat-producing burrowing animals melt Antarctic ice and eat penguins.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Discover April Fool fiction.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:d45fea9d04d17ee076f0",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-003",
        "input_record_sha256": "4a8581ccaa48326293f28f7d858635197649579bd2969e79acd25806ad8b4510",
        "original_fields": {
          "id": "THR-003",
          "title": "Hotheaded Naked Ice Borer",
          "claim": "Heat-producing burrowing animals melt Antarctic ice and eat penguins.",
          "category": "hoax",
          "status": "Discover April Fool fiction.",
          "sources": [
            {
              "url": "https://faculty.mtsac.edu/cbriggs/Biol-1%20Lab%204%20Osmosis%20and%20Surface%20Area%20FA16.pdf",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Discover April Fool fiction.",
          "verification_date": "2026-10-28",
          "claim_family": "hotheaded naked ice borer",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "Heat-producing burrowing animals melt Antarctic ice and eat penguins."
        }
      },
      "record_sha256": "90571a4ab3bee4cdaeb0552a22fd156643c7ebada1baba5b653d633f8b8ea9cb"
    },
    {
      "id": "theory:THR-004",
      "legacy_id": "THR-004",
      "kind": "theory",
      "title": "Bloop as an unknown giant animal",
      "url": "theory-vault.html#THR-004",
      "summary": "The powerful recorded ocean sound came from an enormous unknown creature.",
      "claim": "The powerful recorded ocean sound came from an enormous unknown creature.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "NOAA identifies an Antarctic icequake, not an animal.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:ba2b713db0591a23351b",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:a4e3f987fb38d986c4da",
          "role": "NOAA spectrogram of the 1997 Bloop recording. NOAA identifies its characteristics with icequakes; this is not an image of an animal.",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:a4e3f987fb38d986c4da",
          "role": "NOAA comparison spectrogram of iceberg calving. Supporting acoustics evidence, not the original Bloop recording or a cryptid.",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:a4e3f987fb38d986c4da",
          "role": "NOAA comparison spectrogram of iceberg harmonic tremor caused by contact with the seafloor or another iceberg. Not the original Bloop recording.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/bloop-spectrogram.jpg",
          "caption": "NOAA spectrogram of the 1997 Bloop recording. NOAA identifies its characteristics with icequakes; this is not an image of an animal. NOAA Pacific Marine Environmental Laboratory, Acoustics Program / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "Bloop as an unknown giant animal",
          "href": "theory-vault.html#THR-004"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-004",
        "input_record_sha256": "b999d1e116a8f5a51b895447a7341bfb029239df2862d87b2b5c54e4759734ab",
        "original_fields": {
          "id": "THR-004",
          "title": "Bloop as an unknown giant animal",
          "claim": "The powerful recorded ocean sound came from an enormous unknown creature.",
          "category": "anomaly interpretation",
          "status": "NOAA identifies an Antarctic icequake, not an animal.",
          "sources": [
            {
              "url": "https://oceanservice.noaa.gov/facts/bloop.html",
              "role": "claim documentation and/or assessment"
            },
            {
              "url": "https://www.pmel.noaa.gov/acoustics/sounds/bloop.html",
              "role": "NOAA spectrogram of the 1997 Bloop recording. NOAA identifies its characteristics with icequakes; this is not an image of an animal."
            },
            {
              "url": "https://www.pmel.noaa.gov/acoustics/sounds/bloop.html",
              "role": "NOAA comparison spectrogram of iceberg calving. Supporting acoustics evidence, not the original Bloop recording or a cryptid."
            },
            {
              "url": "https://www.pmel.noaa.gov/acoustics/sounds/bloop.html",
              "role": "NOAA comparison spectrogram of iceberg harmonic tremor caused by contact with the seafloor or another iceberg. Not the original Bloop recording."
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "NOAA identifies an Antarctic icequake, not an animal.",
          "verification_date": "2026-10-28",
          "claim_family": "bloop as an unknown giant animal",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The powerful recorded ocean sound came from an enormous unknown creature.",
          "supporting_images": [
            {
              "src": "thumbs/bloop-spectrogram.jpg",
              "caption": "NOAA spectrogram of the 1997 Bloop recording. NOAA identifies its characteristics with icequakes; this is not an image of an animal. NOAA Pacific Marine Environmental Laboratory, Acoustics Program / Aspect-preserving resize only; no generative editing or cropping",
              "title": "NOAA spectrogram of the 1997 Bloop recording. NOAA identifies its characteristics with icequakes; this is not an image of an animal.",
              "source_url": "https://www.pmel.noaa.gov/acoustics/sounds/bloop.html",
              "rights_url": "https://www.noaa.gov/office-education/outreach-communication/faq",
              "role": "Scientific / historical context; not automatic proof of the claim"
            },
            {
              "src": "thumbs/iceberg-calving-spectrogram.jpg",
              "caption": "NOAA comparison spectrogram of iceberg calving. Supporting acoustics evidence, not the original Bloop recording or a cryptid. NOAA Pacific Marine Environmental Laboratory, Acoustics Program / Aspect-preserving resize only; no generative editing or cropping",
              "title": "NOAA comparison spectrogram of iceberg calving. Supporting acoustics evidence, not the original Bloop recording or a cryptid.",
              "source_url": "https://www.pmel.noaa.gov/acoustics/sounds/bloop.html",
              "rights_url": "https://www.noaa.gov/office-education/outreach-communication/faq",
              "role": "Scientific / historical context; not automatic proof of the claim"
            },
            {
              "src": "thumbs/iceberg-harmonic-tremor.jpg",
              "caption": "NOAA comparison spectrogram of iceberg harmonic tremor caused by contact with the seafloor or another iceberg. Not the original Bloop recording. NOAA Pacific Marine Environmental Laboratory, Acoustics Program / Aspect-preserving resize only; no generative editing or cropping",
              "title": "NOAA comparison spectrogram of iceberg harmonic tremor caused by contact with the seafloor or another iceberg. Not the original Bloop recording.",
              "source_url": "https://www.pmel.noaa.gov/acoustics/sounds/bloop.html",
              "rights_url": "https://www.noaa.gov/office-education/outreach-communication/faq",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "8b1bc1d8f5daeeba8f9c608ff3652efa2fef05c94d291b83c80874eb1cf437e2"
    },
    {
      "id": "theory:THR-005",
      "legacy_id": "THR-005",
      "kind": "theory",
      "title": "ANITA as proof of a backward-time universe",
      "url": "theory-vault.html#THR-005",
      "summary": "Antarctic particle observations demonstrate a parallel universe where time runs backward.",
      "claim": "Antarctic particle observations demonstrate a parallel universe where time runs backward.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Anomalous observations did not establish this conclusion.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:6a4bd65e7c46302c89f9",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:df41401e4405fb1393a8",
          "role": "The real ANITA neutrino experiment being launched from Antarctica. Instrument context, not evidence of a backward-time universe.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/anita-balloon-launch.jpg",
          "caption": "The real ANITA neutrino experiment being launched from Antarctica. Instrument context, not evidence of a backward-time universe. NASA / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "ANITA as proof of a backward-time universe",
          "href": "theory-vault.html#THR-005"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-005",
        "input_record_sha256": "1772f72108a69e3792b86cbd20392e08ac7c5ab69e3f2008766a764d6e2bc5f7",
        "original_fields": {
          "id": "THR-005",
          "title": "ANITA as proof of a backward-time universe",
          "claim": "Antarctic particle observations demonstrate a parallel universe where time runs backward.",
          "category": "science misinterpretation",
          "status": "Anomalous observations did not establish this conclusion.",
          "sources": [
            {
              "url": "https://www.sciencealert.com/Of-course-NASA-did-not-detect-a-parallel-universe-in-Antarctica",
              "role": "claim documentation and/or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e000153",
              "role": "The real ANITA neutrino experiment being launched from Antarctica. Instrument context, not evidence of a backward-time universe."
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Anomalous observations did not establish this conclusion.",
          "verification_date": "2026-10-28",
          "claim_family": "anita as proof of a backward-time universe",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "unverified",
          "map_id": "signals",
          "summary": "Antarctic particle observations demonstrate a parallel universe where time runs backward.",
          "supporting_images": [
            {
              "src": "thumbs/anita-balloon-launch.jpg",
              "caption": "The real ANITA neutrino experiment being launched from Antarctica. Instrument context, not evidence of a backward-time universe. NASA / Aspect-preserving resize only; no generative editing or cropping",
              "title": "The real ANITA neutrino experiment being launched from Antarctica. Instrument context, not evidence of a backward-time universe.",
              "source_url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e000153",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "c21a2ab665419e30b4f7d3735a0661fc530d1cf904803c87ffff9d1cf2421be9"
    },
    {
      "id": "theory:THR-006",
      "legacy_id": "THR-006",
      "kind": "theory",
      "title": "Antarctic prison of the Watchers",
      "url": "theory-vault.html#THR-006",
      "summary": "Enoch describes imprisoned fallen angels beneath Antarctica.",
      "claim": "Enoch describes imprisoned fallen angels beneath Antarctica.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Modern geographical interpretation; text does not explicitly identify Antarctica.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:f78ed984f5e3e1794796",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-006",
        "input_record_sha256": "fda96b0e95967090c691c60445777cf53015393cad24ffe28045f30609bea393",
        "original_fields": {
          "id": "THR-006",
          "title": "Antarctic prison of the Watchers",
          "claim": "Enoch describes imprisoned fallen angels beneath Antarctica.",
          "category": "religious interpretation",
          "status": "Modern geographical interpretation; text does not explicitly identify Antarctica.",
          "sources": [
            {
              "url": "https://mycharisma.com/culture/ancient-book-sparks-viral-theory-over-fallen-angels-and-a-hidden-prison-beneath-antarctica/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Modern geographical interpretation; text does not explicitly identify Antarctica.",
          "verification_date": "2026-10-28",
          "claim_family": "antarctic prison of the watchers",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Enoch describes imprisoned fallen angels beneath Antarctica."
        }
      },
      "record_sha256": "a11cd27a8b38ef79a45a7919d467e3c8a06dedba4ca8a198d47f7afe7a73c45e"
    },
    {
      "id": "theory:THR-007",
      "legacy_id": "THR-007",
      "kind": "theory",
      "title": "Buzz Aldrin evil warning",
      "url": "theory-vault.html#THR-007",
      "summary": "Aldrin tweeted a warning about evil in Antarctica before a heart attack.",
      "claim": "Aldrin tweeted a warning about evil in Antarctica before a heart attack.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Tweet fabricated; documented evacuation concerned altitude sickness.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:493efd05f809a04bc33c",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-007",
        "input_record_sha256": "13bedb41fdc833b5281eb2a8bc1879f1bacf1b33710183acf199201043d6af01",
        "original_fields": {
          "id": "THR-007",
          "title": "Buzz Aldrin evil warning",
          "claim": "Aldrin tweeted a warning about evil in Antarctica before a heart attack.",
          "category": "hoax",
          "status": "Tweet fabricated; documented evacuation concerned altitude sickness.",
          "sources": [
            {
              "url": "https://prod-ss.aap.com.au/factcheck/conspiracy-about-buzz-aldrin-discovering-evil-in-antarctica-resurfaces-online/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Tweet fabricated; documented evacuation concerned altitude sickness.",
          "verification_date": "2026-10-28",
          "claim_family": "buzz aldrin evil warning",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "Aldrin tweeted a warning about evil in Antarctica before a heart attack."
        }
      },
      "record_sha256": "12018afac77df6c9a4b599b5827458ce581690abc41e749f6c5caa3b6a7dccbe"
    },
    {
      "id": "theory:THR-008",
      "legacy_id": "THR-008",
      "kind": "theory",
      "title": "Antarctic Time Gate",
      "url": "theory-vault.html#THR-008",
      "summary": "A weather balloon entered gray fog and its clock returned showing an earlier date.",
      "claim": "A weather balloon entered gray fog and its clock returned showing an earlier date.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Unverified Pravda-derived narrative; no corroborated experiment.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:25a95d7374568f64bebc",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-008",
        "input_record_sha256": "bf70f3335d5ef22ddcb5b12c3d1825bea881ec1e8364bb53e65e9b81ec521c41",
        "original_fields": {
          "id": "THR-008",
          "title": "Antarctic Time Gate",
          "claim": "A weather balloon entered gray fog and its clock returned showing an earlier date.",
          "category": "time anomaly",
          "status": "Unverified Pravda-derived narrative; no corroborated experiment.",
          "sources": [
            {
              "url": "https://thelivingmoon.com/47brotherthebig/03files/Antarctic_Time_Warp_Discovery.html",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Unverified Pravda-derived narrative; no corroborated experiment.",
          "verification_date": "2026-10-28",
          "claim_family": "antarctic time gate",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A weather balloon entered gray fog and its clock returned showing an earlier date."
        }
      },
      "record_sha256": "d10f5de87f6029c40522836caea542b36f887f367dea734a52669ba8294aa9c7"
    },
    {
      "id": "theory:THR-009",
      "legacy_id": "THR-009",
      "kind": "theory",
      "title": "Ark of Gabriel relocation",
      "url": "theory-vault.html#THR-009",
      "summary": "Russia transported a dangerous sacred artifact from Saudi Arabia to Antarctica.",
      "claim": "Russia transported a dangerous sacred artifact from Saudi Arabia to Antarctica.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Documented fringe narrative; no authenticated artifact or transfer evidence.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:d7f5a550806b6154c36b",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-009",
        "input_record_sha256": "9d5361fe52311bb4d7a81b963a777ca35d48bb47701b983db3d07d6153b11362",
        "original_fields": {
          "id": "THR-009",
          "title": "Ark of Gabriel relocation",
          "claim": "Russia transported a dangerous sacred artifact from Saudi Arabia to Antarctica.",
          "category": "religious conspiracy",
          "status": "Documented fringe narrative; no authenticated artifact or transfer evidence.",
          "sources": [
            {
              "url": "https://books.google.com/books/about/The_Ark_of_Gabriel_and_the_Secrets_of_An.html?id=c_MkEQAAQBAJ",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Documented fringe narrative; no authenticated artifact or transfer evidence.",
          "verification_date": "2026-10-28",
          "claim_family": "ark of gabriel relocation",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Russia transported a dangerous sacred artifact from Saudi Arabia to Antarctica."
        }
      },
      "record_sha256": "29675e5885746090bdd36837b71857a594eae22a469a770c2c7bf835dcafd91d"
    },
    {
      "id": "theory:THR-010",
      "legacy_id": "THR-010",
      "kind": "theory",
      "title": "Flash-frozen Pre-Adamite colony",
      "url": "theory-vault.html#THR-010",
      "summary": "A buried Antarctic civilization of tall extraterrestrials and spacecraft was discovered.",
      "claim": "A buried Antarctic civilization of tall extraterrestrials and spacecraft was discovered.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Corey Goode/Michael Salla allegation; not verified archaeology.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:2a536868d2c6cdaf0dd9",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-010",
        "input_record_sha256": "02f15d0a8aa927f3b0a270fff7a9cf2eb3ab9276ff2a6d506b9d571876afe804",
        "original_fields": {
          "id": "THR-010",
          "title": "Flash-frozen Pre-Adamite colony",
          "claim": "A buried Antarctic civilization of tall extraterrestrials and spacecraft was discovered.",
          "category": "exopolitics",
          "status": "Corey Goode/Michael Salla allegation; not verified archaeology.",
          "sources": [
            {
              "url": "https://exopolitics.org/visit-to-antarctica-confirms-discovery-of-flash-frozen-alien-civilization/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Corey Goode/Michael Salla allegation; not verified archaeology.",
          "verification_date": "2026-10-28",
          "claim_family": "flash-frozen pre-adamite colony",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A buried Antarctic civilization of tall extraterrestrials and spacecraft was discovered."
        }
      },
      "record_sha256": "dcb483ed28fc187ef38713fadea82dc04d651a6d9dbcb3ff482d6a4024563b7e"
    },
    {
      "id": "theory:THR-011",
      "legacy_id": "THR-011",
      "kind": "theory",
      "title": "Martian refugees in Antarctica",
      "url": "theory-vault.html#THR-011",
      "summary": "Martian survivors settled in Antarctica in ancient times.",
      "claim": "Martian survivors settled in Antarctica in ancient times.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Uncorroborated testimony and interpretation, not established migration history.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:04d4b8e0acd640cd8fff",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-011",
        "input_record_sha256": "0e328ecd645e44e1f22c5b24cb8cbd44af8c36609d656aa4c0c744a909236a9b",
        "original_fields": {
          "id": "THR-011",
          "title": "Martian refugees in Antarctica",
          "claim": "Martian survivors settled in Antarctica in ancient times.",
          "category": "exopolitics",
          "status": "Uncorroborated testimony and interpretation, not established migration history.",
          "sources": [
            {
              "url": "https://exopolitics.org/did-martian-refugees-settle-in-antarctica-over-a-million-years-ago/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Uncorroborated testimony and interpretation, not established migration history.",
          "verification_date": "2026-10-28",
          "claim_family": "martian refugees in antarctica",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Martian survivors settled in Antarctica in ancient times."
        }
      },
      "record_sha256": "37249c85548cbc22672090a5db8a66b9f74b6556a7ffbba5d4809ebccf11ad54"
    },
    {
      "id": "theory:THR-012",
      "legacy_id": "THR-012",
      "kind": "theory",
      "title": "Antarctic extraterrestrial elite bloodlines",
      "url": "theory-vault.html#THR-012",
      "summary": "A prehistoric extraterrestrial colony produced ruling human bloodlines.",
      "claim": "A prehistoric extraterrestrial colony produced ruling human bloodlines.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Unverified claim; no authenticated genetic or historical evidence supplied.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:dfca3c27785184fc5678",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-012",
        "input_record_sha256": "f4e7d4cf268bc1adcc67679d7c837ec1384110e48dd74b2dc14c84411ac70891",
        "original_fields": {
          "id": "THR-012",
          "title": "Antarctic extraterrestrial elite bloodlines",
          "claim": "A prehistoric extraterrestrial colony produced ruling human bloodlines.",
          "category": "exopolitics",
          "status": "Unverified claim; no authenticated genetic or historical evidence supplied.",
          "sources": [
            {
              "url": "https://exopolitics.org/antarcticas-secret-history-extraterrestrial-colony-created-elite-bloodline-rulers/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Unverified claim; no authenticated genetic or historical evidence supplied.",
          "verification_date": "2026-10-28",
          "claim_family": "antarctic extraterrestrial elite bloodlines",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A prehistoric extraterrestrial colony produced ruling human bloodlines."
        }
      },
      "record_sha256": "5cbdfbe19a9fdeb2ec2a408187f40a2b746cefff9dfb2646f97736227e15ec1f"
    },
    {
      "id": "theory:THR-013",
      "legacy_id": "THR-013",
      "kind": "theory",
      "title": "Dark Fleet interstellar slave trade",
      "url": "theory-vault.html#THR-013",
      "summary": "An Antarctic German-alien alliance operates a space fleet and slave trade.",
      "claim": "An Antarctic German-alien alliance operates a space fleet and slave trade.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Uncorroborated fringe account, not documented military history.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:46c966f2b70675b3f1f5",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-013",
        "input_record_sha256": "55679c990186bf3a8f87f32a32c49de8c4880a23e51ed34db56c4f2ec6a43d92",
        "original_fields": {
          "id": "THR-013",
          "title": "Dark Fleet interstellar slave trade",
          "claim": "An Antarctic German-alien alliance operates a space fleet and slave trade.",
          "category": "exopolitics",
          "status": "Uncorroborated fringe account, not documented military history.",
          "sources": [
            {
              "url": "https://exopolitics.org/new-webinar-antarctica-the-dark-fleet-humanitys-liberation/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Uncorroborated fringe account, not documented military history.",
          "verification_date": "2026-10-28",
          "claim_family": "dark fleet interstellar slave trade",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "An Antarctic German-alien alliance operates a space fleet and slave trade."
        }
      },
      "record_sha256": "4e427772ea3d896c3ea074b663150fbc08f26572dea491e015d545b8745dddb3"
    },
    {
      "id": "theory:THR-014",
      "legacy_id": "THR-014",
      "kind": "theory",
      "title": "Spartan 1 octagonal structure",
      "url": "theory-vault.html#THR-014",
      "summary": "A clandestine team entered an ancient technologically advanced octagonal structure near Beardmore Glacier.",
      "claim": "A clandestine team entered an ancient technologically advanced octagonal structure near Beardmore Glacier.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Anonymous testimony promoted by Linda Moulton Howe; structure not publicly authenticated.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:8b6373ec7b3989f025a0",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-014",
        "input_record_sha256": "2ede7a27346764037878ccd2c228ba486cab14579a9a85f8d5b7ef0d34210727",
        "original_fields": {
          "id": "THR-014",
          "title": "Spartan 1 octagonal structure",
          "claim": "A clandestine team entered an ancient technologically advanced octagonal structure near Beardmore Glacier.",
          "category": "anonymous testimony",
          "status": "Anonymous testimony promoted by Linda Moulton Howe; structure not publicly authenticated.",
          "sources": [
            {
              "url": "https://exopolitics.org/navy-seal-reveals-secret-mission-to-ancient-buried-structure-in-antarctica/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Anonymous testimony promoted by Linda Moulton Howe; structure not publicly authenticated.",
          "verification_date": "2026-10-28",
          "claim_family": "spartan 1 octagonal structure",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A clandestine team entered an ancient technologically advanced octagonal structure near Beardmore Glacier."
        }
      },
      "record_sha256": "ed518aaedfa7840fc7225c849da7e10279b12bde0bb6f2f873a44ece774d877c"
    },
    {
      "id": "theory:THR-015",
      "legacy_id": "THR-015",
      "kind": "theory",
      "title": "IceCube earthquake weapon",
      "url": "theory-vault.html#THR-015",
      "summary": "The neutrino observatory operates as an energy weapon connected to Christchurch earthquakes.",
      "claim": "The neutrino observatory operates as an energy weapon connected to Christchurch earthquakes.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Eric Hecker allegation; no demonstrated causal mechanism or corroborating seismic evidence.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:dd9d64a242d7aaa4cbb9",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-015",
        "input_record_sha256": "123bf8c9f602e29694fe43ed1e0fa59ecb5d2248812ab4130c032a8c9c7b3fa7",
        "original_fields": {
          "id": "THR-015",
          "title": "IceCube earthquake weapon",
          "claim": "The neutrino observatory operates as an energy weapon connected to Christchurch earthquakes.",
          "category": "technology allegation",
          "status": "Eric Hecker allegation; no demonstrated causal mechanism or corroborating seismic evidence.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/UFOs/comments/148qc9b/eric_hecker_raytheon_contractor_claims_the_south/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Eric Hecker allegation; no demonstrated causal mechanism or corroborating seismic evidence.",
          "verification_date": "2026-10-28",
          "claim_family": "icecube earthquake weapon",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The neutrino observatory operates as an energy weapon connected to Christchurch earthquakes."
        }
      },
      "record_sha256": "ccdd196e8b5d08ad014f7359fbf7e044fa68d1f4c4702a173eed569494e9e9b9"
    },
    {
      "id": "theory:THR-016",
      "legacy_id": "THR-016",
      "kind": "theory",
      "title": "IceCube cognition manipulation",
      "url": "theory-vault.html#THR-016",
      "summary": "South Pole equipment influences human cognition and may be connected to Havana syndrome.",
      "claim": "South Pole equipment influences human cognition and may be connected to Havana syndrome.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Unverified allegation; not a medical or technical finding.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:5565b51093d125b8b942",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-016",
        "input_record_sha256": "fd4e7fbff5372fea683d36288115d52c04dd99156379d70378edf2f84c27358c",
        "original_fields": {
          "id": "THR-016",
          "title": "IceCube cognition manipulation",
          "claim": "South Pole equipment influences human cognition and may be connected to Havana syndrome.",
          "category": "technology allegation",
          "status": "Unverified allegation; not a medical or technical finding.",
          "sources": [
            {
              "url": "https://www.gaia.com/video/antarctica-weather-wars-mind-control",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Unverified allegation; not a medical or technical finding.",
          "verification_date": "2026-10-28",
          "claim_family": "icecube cognition manipulation",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "South Pole equipment influences human cognition and may be connected to Havana syndrome."
        }
      },
      "record_sha256": "85c36843cd95ca3430142f89dd9418682b3176169f5e364eeb4938497a1963fc"
    },
    {
      "id": "theory:THR-017",
      "legacy_id": "THR-017",
      "kind": "theory",
      "title": "IceCube tracking exotic propulsion",
      "url": "theory-vault.html#THR-017",
      "summary": "IceCube detects clandestine craft through neutrinos emitted by exotic propulsion.",
      "claim": "IceCube detects clandestine craft through neutrinos emitted by exotic propulsion.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Claimant interpretation, not demonstrated capability.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:3a1917c86d785d33f09a",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-017",
        "input_record_sha256": "979c105c7b036043f8a451f6936ae9f28eaf9f8b56c9e4deedab88649c6d74aa",
        "original_fields": {
          "id": "THR-017",
          "title": "IceCube tracking exotic propulsion",
          "claim": "IceCube detects clandestine craft through neutrinos emitted by exotic propulsion.",
          "category": "technology allegation",
          "status": "Claimant interpretation, not demonstrated capability.",
          "sources": [
            {
              "url": "https://fight.fudgie.org/search/show/dkj/episode/20251018_Sat_3MP_woZaydE",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Claimant interpretation, not demonstrated capability.",
          "verification_date": "2026-10-28",
          "claim_family": "icecube tracking exotic propulsion",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "IceCube detects clandestine craft through neutrinos emitted by exotic propulsion."
        }
      },
      "record_sha256": "c02e2e92eb8c859942370a1d7c208eb54e64a13c731d017757c09b28c50100fc"
    },
    {
      "id": "theory:THR-018",
      "legacy_id": "THR-018",
      "kind": "theory",
      "title": "Ghost ship Jenny",
      "url": "theory-vault.html#THR-018",
      "summary": "A ship trapped for years in Antarctic ice was found with a frozen crew and logbook.",
      "claim": "A ship trapped for years in Antarctic ice was found with a frozen crew and logbook.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Historical analysis finds a migratory legend, not a verified vessel discovery.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:a94f7a7574bcae796e0a",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-018",
        "input_record_sha256": "97dbcfc22073b4ef530ae50b12256e83ec0389591590f0e0ba1d5b4f171cf83e",
        "original_fields": {
          "id": "THR-018",
          "title": "Ghost ship Jenny",
          "claim": "A ship trapped for years in Antarctic ice was found with a frozen crew and logbook.",
          "category": "maritime legend",
          "status": "Historical analysis finds a migratory legend, not a verified vessel discovery.",
          "sources": [
            {
              "url": "https://www.cambridge.org/core/journals/polar-record/article/in-search-of-the-origin-of-an-antarctic-ghost-ship-the-legend-of-the-jenny-reevaluated/2D88EE4809DBEB54676E3904A48C3A78",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Historical analysis finds a migratory legend, not a verified vessel discovery.",
          "verification_date": "2026-10-28",
          "claim_family": "ghost ship jenny",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A ship trapped for years in Antarctic ice was found with a frozen crew and logbook."
        }
      },
      "record_sha256": "82ea3a46f65eff2467e3bd6b1420ab62596910af18995de880d5944a56f8f9fc"
    },
    {
      "id": "theory:THR-019",
      "legacy_id": "THR-019",
      "kind": "theory",
      "title": "Opium Bird",
      "url": "theory-vault.html#THR-019",
      "summary": "A giant birdlike species was discovered in Antarctica.",
      "claim": "A giant birdlike species was discovered in Antarctica.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "AI-created internet fiction; Erosion Bird is an alias, not a second species.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:2911b42537de8ec51ce7",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-019",
        "input_record_sha256": "880fe74628c96ed1ca8655860ab6eeba54968da0724f0bab39f51a0527aafb48",
        "original_fields": {
          "id": "THR-019",
          "title": "Opium Bird",
          "claim": "A giant birdlike species was discovered in Antarctica.",
          "category": "AI hoax",
          "status": "AI-created internet fiction; Erosion Bird is an alias, not a second species.",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2024/03/fact-check-ai-conspiracy-video-of-antarctica-opium-bird-is-not-real.html",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "AI-created internet fiction; Erosion Bird is an alias, not a second species.",
          "verification_date": "2026-10-28",
          "claim_family": "opium bird",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "A giant birdlike species was discovered in Antarctica."
        }
      },
      "record_sha256": "b86cd54846682071714739f7e52da51101f8a23b4fb344515a4be27390678138"
    },
    {
      "id": "theory:THR-020",
      "legacy_id": "THR-020",
      "kind": "theory",
      "title": "Giant pre-Flood tree stump",
      "url": "theory-vault.html#THR-020",
      "summary": "An Antarctic rock outcrop is the remains of an enormous tree cut by angels.",
      "claim": "An Antarctic rock outcrop is the remains of an enormous tree cut by angels.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Sampled rock is dolerite/diabase, not petrified wood.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:dc32af778a11fd5eaf8d",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-020",
        "input_record_sha256": "f74bb2d586c0e5124cd2463dad59d941dc8048f1e256c143969044a1bf701124",
        "original_fields": {
          "id": "THR-020",
          "title": "Giant pre-Flood tree stump",
          "claim": "An Antarctic rock outcrop is the remains of an enormous tree cut by angels.",
          "category": "misidentification",
          "status": "Sampled rock is dolerite/diabase, not petrified wood.",
          "sources": [
            {
              "url": "https://science.feedback.org/review/no-evidence-of-giant-stump-in-helicopter-footage-from-antarctica-just-a-normal-rock-outcrop/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Sampled rock is dolerite/diabase, not petrified wood.",
          "verification_date": "2026-10-28",
          "claim_family": "giant pre-flood tree stump",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "An Antarctic rock outcrop is the remains of an enormous tree cut by angels."
        }
      },
      "record_sha256": "ccf988324904113593517ec6abac62cfef727317b7d67ce083c02e67550f89fb"
    },
    {
      "id": "theory:THR-021",
      "legacy_id": "THR-021",
      "kind": "theory",
      "title": "South Pole Telescope Nibiru leak",
      "url": "theory-vault.html#THR-021",
      "summary": "An insider leaked telescope images of the incoming planet Nibiru.",
      "claim": "An insider leaked telescope images of the incoming planet Nibiru.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Fringe allegation; alleged leak does not authenticate a planet.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:ba140cc4396034fcee69",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-021",
        "input_record_sha256": "0e0145f7b264d6986b3992232f5610e8a01fc39be939bbe21fc8666d6cabd59c",
        "original_fields": {
          "id": "THR-021",
          "title": "South Pole Telescope Nibiru leak",
          "claim": "An insider leaked telescope images of the incoming planet Nibiru.",
          "category": "astronomical conspiracy",
          "status": "Fringe allegation; alleged leak does not authenticate a planet.",
          "sources": [
            {
              "url": "https://www.bibliotecapleyades.net/hercolobus/esp_hercolobus_75.htm",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Fringe allegation; alleged leak does not authenticate a planet.",
          "verification_date": "2026-10-28",
          "claim_family": "south pole telescope nibiru leak",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "An insider leaked telescope images of the incoming planet Nibiru."
        }
      },
      "record_sha256": "ee1a18ef3d7f5052da26df2be47b24da0950c8f6c65d15e932c1f645ade6a379"
    },
    {
      "id": "theory:THR-022",
      "legacy_id": "THR-022",
      "kind": "theory",
      "title": "Neumayer webcam Nibiru",
      "url": "theory-vault.html#THR-022",
      "summary": "A round object in station imagery is Nibiru or a UFO.",
      "claim": "A round object in station imagery is Nibiru or a UFO.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Reported conventional explanation is an atmospheric research balloon.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:86898baadcfa1ea1c3ea",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-022",
        "input_record_sha256": "bccf21dc36749f699bef6833caa22e48e408788d431c4536b2740619b0c517d2",
        "original_fields": {
          "id": "THR-022",
          "title": "Neumayer webcam Nibiru",
          "claim": "A round object in station imagery is Nibiru or a UFO.",
          "category": "misidentification",
          "status": "Reported conventional explanation is an atmospheric research balloon.",
          "sources": [
            {
              "url": "https://stirileprotv.ro/bizar/obiect-ciudat-filmat-deasupra-unei-statii-de-cercetare-din-antarctica-ozn-sau-planeta-nibiru.html",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Reported conventional explanation is an atmospheric research balloon.",
          "verification_date": "2026-10-28",
          "claim_family": "neumayer webcam nibiru",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A round object in station imagery is Nibiru or a UFO."
        }
      },
      "record_sha256": "d0dd69f5bf0cdf696874978284c4a950a5b95a319d1ff584f3124cb4a3d1306e"
    },
    {
      "id": "theory:THR-023",
      "legacy_id": "THR-023",
      "kind": "theory",
      "title": "Photographed dimensional gateway",
      "url": "theory-vault.html#THR-023",
      "summary": "Photographs document a dimensional portal in Antarctica.",
      "claim": "Photographs document a dimensional portal in Antarctica.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Published photographs were edited stock images; discovery unsubstantiated.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:7efe70b9de7d4d1cfe71",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-023",
        "input_record_sha256": "70af7ec204404137f157b7235586ca09c8a6111b8139f0bfc669009bd55712c6",
        "original_fields": {
          "id": "THR-023",
          "title": "Photographed dimensional gateway",
          "claim": "Photographs document a dimensional portal in Antarctica.",
          "category": "image hoax",
          "status": "Published photographs were edited stock images; discovery unsubstantiated.",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2023/04/fact-check-there-is-no-dimensional-gateway-to-antarctica-these-photos-were-edited.html",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Published photographs were edited stock images; discovery unsubstantiated.",
          "verification_date": "2026-10-28",
          "claim_family": "photographed dimensional gateway",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "Photographs document a dimensional portal in Antarctica."
        }
      },
      "record_sha256": "876f6732aedfe7af87e52030bddd81f7883d3d2fdaed51768416087bb89e7855"
    },
    {
      "id": "theory:THR-024",
      "legacy_id": "THR-024",
      "kind": "theory",
      "title": "IceBridge buried settlement",
      "url": "theory-vault.html#THR-024",
      "summary": "NASA lidar found ancient human settlement beneath 2.3 km of ice.",
      "claim": "NASA lidar found ancient human settlement beneath 2.3 km of ice.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Fabricated story used unrelated imagery including Saqqara, Egypt.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:3e68b60cfde71daea5e4",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-024",
        "input_record_sha256": "2b4452649acba446d78c418bcd41e634fa0e2b4871f28eadf8d886a83cd3fce6",
        "original_fields": {
          "id": "THR-024",
          "title": "IceBridge buried settlement",
          "claim": "NASA lidar found ancient human settlement beneath 2.3 km of ice.",
          "category": "hoax",
          "status": "Fabricated story used unrelated imagery including Saqqara, Egypt.",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2016/01/hoax-alert-nasa-images-did-not-reveal-ancient-human-settlement-under-23-km-of-ice.html",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Fabricated story used unrelated imagery including Saqqara, Egypt.",
          "verification_date": "2026-10-28",
          "claim_family": "icebridge buried settlement",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "NASA lidar found ancient human settlement beneath 2.3 km of ice."
        }
      },
      "record_sha256": "23850b631cfba694e8b265f40e8cee89c45d89540fb105ea6b2d1d7dab622463"
    },
    {
      "id": "theory:THR-025",
      "legacy_id": "THR-025",
      "kind": "theory",
      "title": "Antarctic Striders",
      "url": "theory-vault.html#THR-025",
      "summary": "Researchers or soldiers encountered enormous predatory spiderlike creatures.",
      "claim": "Researchers or soldiers encountered enormous predatory spiderlike creatures.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Unverified SonofAntAnon narrative; not the real Antarctic sea spiders.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:ca8a1fabb1733ed3e722",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-025",
        "input_record_sha256": "edd3a334784ab45ab75e27ba7d2e7ca288eccbb1af941aeb0791c6aaf3cd8743",
        "original_fields": {
          "id": "THR-025",
          "title": "Antarctic Striders",
          "claim": "Researchers or soldiers encountered enormous predatory spiderlike creatures.",
          "category": "internet lore",
          "status": "Unverified SonofAntAnon narrative; not the real Antarctic sea spiders.",
          "sources": [
            {
              "url": "https://www.youtube.com/watch?v=U3RkheR9Zbk",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Unverified SonofAntAnon narrative; not the real Antarctic sea spiders.",
          "verification_date": "2026-10-28",
          "claim_family": "antarctic striders",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Researchers or soldiers encountered enormous predatory spiderlike creatures."
        }
      },
      "record_sha256": "d4b53f74ae538b121f7302ef3a7073771bc09fac946cabf6f47bf6f7874198f8"
    },
    {
      "id": "theory:THR-026",
      "legacy_id": "THR-026",
      "kind": "theory",
      "title": "Ventusky Antarctic blob",
      "url": "theory-vault.html#THR-026",
      "summary": "A departing UFO or Atlantean object created enormous waves toward Africa.",
      "claim": "A departing UFO or Atlantean object created enormous waves toward Africa.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Forecast provider identified a model error; circulated flooding footage predates the event.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:81bdf44cc6cdda22cb9a",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-026",
        "input_record_sha256": "70fe4794a2e2e08c94bcf75a14c6c0eb14ffb7317937279015f6dc2d24d8ce10",
        "original_fields": {
          "id": "THR-026",
          "title": "Ventusky Antarctic blob",
          "claim": "A departing UFO or Atlantean object created enormous waves toward Africa.",
          "category": "data misinterpretation",
          "status": "Forecast provider identified a model error; circulated flooding footage predates the event.",
          "sources": [
            {
              "url": "https://politifact.com/factchecks/2024/apr/16/facebook-posts/erroneous-forecast-of-85-foot-waves-was-caused-by/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Forecast provider identified a model error; circulated flooding footage predates the event.",
          "verification_date": "2026-10-28",
          "claim_family": "ventusky antarctic blob",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A departing UFO or Atlantean object created enormous waves toward Africa."
        }
      },
      "record_sha256": "32bcaeeb531c7d19434ddf17d53df1ea8ea8d083b662d86f4724f7447d9f9b1d"
    },
    {
      "id": "theory:THR-027",
      "legacy_id": "THR-027",
      "kind": "theory",
      "title": "Serpents Gate wave generator",
      "url": "theory-vault.html#THR-027",
      "summary": "A secret machine generates waves to repel boats from an Antarctic entrance.",
      "claim": "A secret machine generates waves to repel boats from an Antarctic entrance.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Video shows Greenland glacier calving, not an Antarctic device.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:bf0235ccbae3d38d3af2",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-027",
        "input_record_sha256": "30c85e2bb95e155f9f1271afeb28860c7e4b6bfbffe000d7b1b39b783229f967",
        "original_fields": {
          "id": "THR-027",
          "title": "Serpents Gate wave generator",
          "claim": "A secret machine generates waves to repel boats from an Antarctic entrance.",
          "category": "misidentified footage",
          "status": "Video shows Greenland glacier calving, not an Antarctic device.",
          "sources": [
            {
              "url": "https://prod-ss.aap.com.au/factcheck/no-video-doesnt-show-giant-wave-generator-in-the-antarctic/",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Video shows Greenland glacier calving, not an Antarctic device.",
          "verification_date": "2026-10-28",
          "claim_family": "serpents gate wave generator",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A secret machine generates waves to repel boats from an Antarctic entrance."
        }
      },
      "record_sha256": "3949316160a44285f092ff0ced325470ec5103c805db11b5c892d3fa8676eb15"
    },
    {
      "id": "theory:THR-031",
      "legacy_id": "THR-031",
      "kind": "theory",
      "title": "Antarctic terraforming node",
      "url": "theory-vault.html#THR-031",
      "summary": "Secrecy protects a terraforming device beneath the continent.",
      "claim": "Secrecy protects a terraforming device beneath the continent.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Individual speculative post, not a scientific finding or widespread established theory.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:552a9f73c20a2faa609f",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-031",
        "input_record_sha256": "ee370eb451c3e54a376b103432dd7ccdcac9e3c74f28f0b0f2509a24cd8d0aa0",
        "original_fields": {
          "id": "THR-031",
          "title": "Antarctic terraforming node",
          "claim": "Secrecy protects a terraforming device beneath the continent.",
          "category": "community speculation",
          "status": "Individual speculative post, not a scientific finding or widespread established theory.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/10iays2",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Individual speculative post, not a scientific finding or widespread established theory.",
          "verification_date": "2026-10-28",
          "claim_family": "antarctic terraforming node",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Secrecy protects a terraforming device beneath the continent."
        }
      },
      "record_sha256": "cc87420de1596b59919e6426fdc0e9d6107949e42ca39f955e51620d2ecad590"
    },
    {
      "id": "theory:THR-032",
      "legacy_id": "THR-032",
      "kind": "theory",
      "title": "Vostok NSA takeover",
      "url": "theory-vault.html#THR-032",
      "summary": "The NSA stopped or took over Lake Vostok exploration for national-security reasons.",
      "claim": "The NSA stopped or took over Lake Vostok exploration for national-security reasons.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Community-circulated assertion; quoted release is not authenticated by this record.",
        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
      },
      "sources": [
        {
          "source_id": "source:7035140e74969268cbfc",
          "role": "claim documentation and/or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THR-032",
        "input_record_sha256": "cab4d25f7903c9558ec0307399c295e7d3d2ebe3b6877a2b75aa5478031eaaa6",
        "original_fields": {
          "id": "THR-032",
          "title": "Vostok NSA takeover",
          "claim": "The NSA stopped or took over Lake Vostok exploration for national-security reasons.",
          "category": "cover-up allegation",
          "status": "Community-circulated assertion; quoted release is not authenticated by this record.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/conspiracy/comments/i4qjr3",
              "role": "claim documentation and/or assessment"
            }
          ],
          "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required.",
          "related_claims": [],
          "counterevidence": "Community-circulated assertion; quoted release is not authenticated by this record.",
          "verification_date": "2026-10-28",
          "claim_family": "vostok nsa takeover",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The NSA stopped or took over Lake Vostok exploration for national-security reasons."
        }
      },
      "record_sha256": "d489164346438e8094416ca2f95349cde3617691aedc9287dbaeb245f70c3323"
    },
    {
      "id": "theory:THS-001",
      "legacy_id": "THS-001",
      "kind": "theory",
      "title": "Antarctic megalodon survival",
      "url": "theory-vault.html#THS-001",
      "summary": "Megalodon persists in remote Antarctic waters.",
      "claim": "Megalodon persists in remote Antarctic waters.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated surviving specimen; narrative documents a survival claim, not discovery.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:be3bdbcc7fe01f42d8ac",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-001",
        "input_record_sha256": "53b21391790907d71245e2e48c9a38804bc44b2a1691d9ea097ae55a2e538003",
        "original_fields": {
          "id": "THS-001",
          "title": "Antarctic megalodon survival",
          "claim": "Megalodon persists in remote Antarctic waters.",
          "category": "cryptid",
          "status": "No authenticated surviving specimen; narrative documents a survival claim, not discovery.",
          "counterevidence": "No authenticated surviving specimen; narrative documents a survival claim, not discovery.",
          "sources": [
            {
              "url": "https://www.youtube.com/watch?v=U2TrLXEPq1w",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "antarctic megalodon survival",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Megalodon persists in remote Antarctic waters."
        }
      },
      "record_sha256": "e6ae7e501fc3a3ac183bfd109300c8a70029d90170aa9a9abf2016d116b6b7f7"
    },
    {
      "id": "theory:THS-002",
      "legacy_id": "THS-002",
      "kind": "theory",
      "title": "Antarctic Godzilla",
      "url": "theory-vault.html#THS-002",
      "summary": "The Soya crew encountered a huge unknown mammal in 1958.",
      "claim": "The Soya crew encountered a huge unknown mammal in 1958.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Historical cryptid account; later linked to Ningen but predates that internet legend.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:7a7291af4602b8afb814",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-002",
        "input_record_sha256": "cdd3c3b0f8bc9cb77d50be0f3385f04bcda42da9737ba8eae247a0826f79b6bb",
        "original_fields": {
          "id": "THS-002",
          "title": "Antarctic Godzilla",
          "claim": "The Soya crew encountered a huge unknown mammal in 1958.",
          "category": "reported sighting",
          "status": "Historical cryptid account; later linked to Ningen but predates that internet legend.",
          "counterevidence": "Historical cryptid account; later linked to Ningen but predates that internet legend.",
          "sources": [
            {
              "url": "https://www.shimajournal.plate.media/issues/v14n1/10.-Greenland-and-Hayward-Shima-v14n1.pdf",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "antarctic godzilla",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "The Soya crew encountered a huge unknown mammal in 1958."
        }
      },
      "record_sha256": "f08f435c02cf05839639c10b773eb954ce9b738e95fb0161147d0eca59eef695"
    },
    {
      "id": "theory:THS-003",
      "legacy_id": "THS-003",
      "kind": "theory",
      "title": "Garden of Eden under Antarctic ice",
      "url": "theory-vault.html#THS-003",
      "summary": "The biblical garden was located on Antarctica before glaciation.",
      "claim": "The biblical garden was located on Antarctica before glaciation.",
      "topics": [
        "Creatures, legends & belief"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Speculative location claim, unsupported by authenticated archaeological evidence.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:7a895af0c3848c4effca",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-003",
        "input_record_sha256": "8f4be26530439409aae03dd346e72b91005306cf348b84973f5557ee316e15b1",
        "original_fields": {
          "id": "THS-003",
          "title": "Garden of Eden under Antarctic ice",
          "claim": "The biblical garden was located on Antarctica before glaciation.",
          "category": "religious interpretation",
          "status": "Speculative location claim, unsupported by authenticated archaeological evidence.",
          "counterevidence": "Speculative location claim, unsupported by authenticated archaeological evidence.",
          "sources": [
            {
              "url": "https://creationwiki.org/Antarctica",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "garden of eden under antarctic ice",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Creatures, legends & belief",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "The biblical garden was located on Antarctica before glaciation."
        }
      },
      "record_sha256": "27889c05d89eeb01adc7c5108f657457f1e9380ce9ebd15368d20821a418bd8e"
    },
    {
      "id": "theory:THS-004",
      "legacy_id": "THS-004",
      "kind": "theory",
      "title": "Fabricated Antarctic midnight sun",
      "url": "theory-vault.html#THS-004",
      "summary": "Continuous Antarctic sunlight footage is staged or digitally manufactured.",
      "claim": "Continuous Antarctic sunlight footage is staged or digitally manufactured.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Rejected by direct polar observations; includes Final Experiment fakery variants as one family.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:13f6cc8b910cbe33b1d5",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-004",
        "input_record_sha256": "fdeec8ef316bf290ce04608b5d21f187a738c676e61e5cec70e73e2f9ce71d76",
        "original_fields": {
          "id": "THS-004",
          "title": "Fabricated Antarctic midnight sun",
          "claim": "Continuous Antarctic sunlight footage is staged or digitally manufactured.",
          "category": "flat-earth allegation",
          "status": "Rejected by direct polar observations; includes Final Experiment fakery variants as one family.",
          "counterevidence": "Rejected by direct polar observations; includes Final Experiment fakery variants as one family.",
          "sources": [
            {
              "url": "https://exodusredux.com/the-final-experiment-hoax/",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "fabricated antarctic midnight sun",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Continuous Antarctic sunlight footage is staged or digitally manufactured."
        }
      },
      "record_sha256": "51e3b00c802acd97010509143746375ae30cc1a0b2f60e9d28d5adcd998ccb89"
    },
    {
      "id": "theory:THS-005",
      "legacy_id": "THS-005",
      "kind": "theory",
      "title": "Drilling the firmament",
      "url": "theory-vault.html#THS-005",
      "summary": "1960s Antarctic drilling encountered the wall or dome of the firmament.",
      "claim": "1960s Antarctic drilling encountered the wall or dome of the firmament.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Claimant explicitly cannot identify or authenticate the alleged witness.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:1df47bd344a3042e8a0c",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-005",
        "input_record_sha256": "936f5ca5e32df55b6b0fb73c1c682c570bc7bc1f17c58a717a6c37498778b815",
        "original_fields": {
          "id": "THS-005",
          "title": "Drilling the firmament",
          "claim": "1960s Antarctic drilling encountered the wall or dome of the firmament.",
          "category": "flat-earth allegation",
          "status": "Claimant explicitly cannot identify or authenticate the alleged witness.",
          "counterevidence": "Claimant explicitly cannot identify or authenticate the alleged witness.",
          "sources": [
            {
              "url": "https://www.youtube.com/watch?v=Mz3-DRa2cDw",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "drilling the firmament",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "1960s Antarctic drilling encountered the wall or dome of the firmament.",
          "reference_research_leads": {
            "reference_id": "t-dome",
            "items": [
              "Operation Argus (1958)",
              "Operation Fishbowl (1962)",
              "Antarctic Treaty restrictions"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "b05992d109be3290e4a5dd1df95bb9ad1c00144cb499716e2c137742985f71a5"
    },
    {
      "id": "theory:THS-006",
      "legacy_id": "THS-006",
      "kind": "theory",
      "title": "Twenty hidden continents",
      "url": "theory-vault.html#THS-006",
      "summary": "An Antarctic barrier hides twenty additional inhabited continents.",
      "claim": "An Antarctic barrier hides twenty additional inhabited continents.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Contradicted by global mapping; extra lands are not authenticated geography.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:06a6575b3a5229e0b999",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:908b6ad153d1ec85d52c",
          "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/modis-antarctic-coasts.jpg",
          "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "Twenty hidden continents",
          "href": "theory-vault.html#THS-006"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-006",
        "input_record_sha256": "a2729184838290e7b8302d894fb7ce1458c885bda1248978f1414936589a6bde",
        "original_fields": {
          "id": "THS-006",
          "title": "Twenty hidden continents",
          "claim": "An Antarctic barrier hides twenty additional inhabited continents.",
          "category": "flat-earth allegation",
          "status": "Contradicted by global mapping; extra lands are not authenticated geography.",
          "counterevidence": "Contradicted by global mapping; extra lands are not authenticated geography.",
          "sources": [
            {
              "url": "https://www.yahoo.com/news/no-antarctica-not-ice-wall-224441366.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents."
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "twenty hidden continents",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "speculative",
          "map_id": "icewall",
          "summary": "An Antarctic barrier hides twenty additional inhabited continents.",
          "reference_research_leads": {
            "reference_id": "t-beyond",
            "items": [
              "Byrd quotes about 'land beyond the pole'",
              "Old maps of a vast Terra Australis",
              "Highjump's size"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "supporting_images": [
            {
              "src": "thumbs/modis-antarctic-coasts.jpg",
              "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping",
              "title": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
              "source_url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "6c9de632742c682b159eeb6bfbc9fa733f9c579e0e8f158b9a5b8aa3eec1c02d"
    },
    {
      "id": "theory:THS-007",
      "legacy_id": "THS-007",
      "kind": "theory",
      "title": "Antarctic circumferential ice wall",
      "url": "theory-vault.html#THS-007",
      "summary": "Antarctica is the boundary of a flat Earth rather than a continent.",
      "claim": "Antarctica is the boundary of a flat Earth rather than a continent.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Contradicted by surveys, navigation and satellite observations.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:845a3a235a5d4cc827c2",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:908b6ad153d1ec85d52c",
          "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "venable-ice-shelf.jpg",
          "caption": "NASA/JPL-Caltech/UC Irvine / Ice-shelf context / Context image—not proof of the broader claim.",
          "title": "Antarctic circumferential ice wall",
          "href": "theory-vault.html#THS-007"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-007",
        "input_record_sha256": "59eefeef99874bf72ab14b7aef6e83bf54fc705024e8fec276fee07aa1b13581",
        "original_fields": {
          "id": "THS-007",
          "title": "Antarctic circumferential ice wall",
          "claim": "Antarctica is the boundary of a flat Earth rather than a continent.",
          "category": "flat-earth allegation",
          "status": "Contradicted by surveys, navigation and satellite observations.",
          "counterevidence": "Contradicted by surveys, navigation and satellite observations.",
          "sources": [
            {
              "url": "https://science.feedback.org/review/how-we-know-earth-is-round-not-flat-a-review-of-claims-and-misconceptions-about-earths-shape/",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents."
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "antarctic circumferential ice wall",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "speculative",
          "map_id": "icewall",
          "summary": "Antarctica is the boundary of a flat Earth rather than a continent.",
          "reference_research_leads": {
            "reference_id": "t-ice-wall",
            "items": [
              "Photographs of the Ross Ice Shelf front",
              "Gleason's 1892 map",
              "The Antarctic Treaty's controls on activity south of 60°S",
              "Byrd's references to vast land"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "supporting_images": [
            {
              "src": "thumbs/modis-antarctic-coasts.jpg",
              "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping",
              "title": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
              "source_url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "82cc314760d314a02cd7228dfe1140abdda66d166c2e9cd4b00f0d29eeae66ab"
    },
    {
      "id": "theory:THS-008",
      "legacy_id": "THS-008",
      "kind": "theory",
      "title": "Blanket Antarctic no-fly zone",
      "url": "theory-vault.html#THS-008",
      "summary": "A legal ban prevents all aircraft flying over Antarctica.",
      "claim": "A legal ban prevents all aircraft flying over Antarctica.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No such blanket ban; viral enforcement footage was filmed over the USA.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:60105b414fa6733b93c1",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d9b08df723ef5180e0e5",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-aircraft.png",
          "caption": "NARA / Historical context, not current access guidance / Context image—not proof of the broader claim.",
          "title": "Blanket Antarctic no-fly zone",
          "href": "theory-vault.html#THS-008"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-008",
        "input_record_sha256": "6e15be577d661f97ad3eb5b3bce285915a86390624d068e95906903ce60d49c3",
        "original_fields": {
          "id": "THS-008",
          "title": "Blanket Antarctic no-fly zone",
          "claim": "A legal ban prevents all aircraft flying over Antarctica.",
          "category": "access conspiracy",
          "status": "No such blanket ban; viral enforcement footage was filmed over the USA.",
          "counterevidence": "No such blanket ban; viral enforcement footage was filmed over the USA.",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2023/04/fact-check-video-does-not-show-military-enforcement-of-no-fly-zone-over-antarctica.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://www.ats.aq/e/antarctictreaty.html",
              "role": "Primary institutional context; not proof of the speculative claim"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "blanket antarctic no-fly zone",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": "access",
          "summary": "A legal ban prevents all aircraft flying over Antarctica.",
          "reference_research_leads": {
            "reference_id": "t-treaty-secrecy",
            "items": [
              "Permit requirements",
              "Bans on mining and military activity",
              "Few visitors"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "research_context": [
            {
              "text": "Antarctic Treaty inspection provisions concern designated state observers, not unrestricted access for every tourist. Peaceful scientific use of military personnel or equipment is permitted.",
              "source_url": "https://www.ats.aq/e/antarctictreaty.html"
            }
          ]
        }
      },
      "record_sha256": "ada1d35b78b22b8423fa3bb313d5e5315ee2be1bed8d253b32860947ff31f6e0"
    },
    {
      "id": "theory:THS-009",
      "legacy_id": "THS-009",
      "kind": "theory",
      "title": "COVID names predicted in Antarctic islands",
      "url": "theory-vault.html#THS-009",
      "summary": "Omicron and Delta place names reveal advance planning of pandemic variants.",
      "claim": "Omicron and Delta place names reveal advance planning of pandemic variants.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Greek-letter geographic names do not establish pandemic planning.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:53101fb56cd44b19e400",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-009",
        "input_record_sha256": "d86913badc2b134319449e6342cacf90fb15406cf8fe48e231e998c9e0ed1ace",
        "original_fields": {
          "id": "THS-009",
          "title": "COVID names predicted in Antarctic islands",
          "claim": "Omicron and Delta place names reveal advance planning of pandemic variants.",
          "category": "naming conspiracy",
          "status": "Greek-letter geographic names do not establish pandemic planning.",
          "counterevidence": "Greek-letter geographic names do not establish pandemic planning.",
          "sources": [
            {
              "url": "https://www.poynter.org/tfcn/2023/sinister-or-simple-checking-out-antarctica-conspiracy-theories/",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "covid names predicted in antarctic islands",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Omicron and Delta place names reveal advance planning of pandemic variants."
        }
      },
      "record_sha256": "34d1391ed30dcad0a419f05c95a64d1328a03fc90130199648cea944d1d7deb3"
    },
    {
      "id": "theory:THS-010",
      "legacy_id": "THS-010",
      "kind": "theory",
      "title": "Eighteenth-century Antarctic nuclear war",
      "url": "theory-vault.html#THS-010",
      "summary": "A recent nuclear war destroyed a formerly flourishing Antarctica.",
      "claim": "A recent nuclear war destroyed a formerly flourishing Antarctica.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No evidence of the alleged war; long ice history contradicts recent freezing.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:9430331f1138e5c3789e",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-010",
        "input_record_sha256": "68f993d40c4e0a2664b304af5f71967e184a2fa104f83c74ced67ab85d110e7f",
        "original_fields": {
          "id": "THS-010",
          "title": "Eighteenth-century Antarctic nuclear war",
          "claim": "A recent nuclear war destroyed a formerly flourishing Antarctica.",
          "category": "alternative history",
          "status": "No evidence of the alleged war; long ice history contradicts recent freezing.",
          "counterevidence": "No evidence of the alleged war; long ice history contradicts recent freezing.",
          "sources": [
            {
              "url": "https://fullfact.org/online/not-illegal-to-fly-over-antarctica/",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "eighteenth-century antarctic nuclear war",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A recent nuclear war destroyed a formerly flourishing Antarctica."
        }
      },
      "record_sha256": "335e1441867ca9979ce38ecfe0eec0b1babf3e2241eb05b2cd7171b4a7b71020"
    },
    {
      "id": "theory:THS-011",
      "legacy_id": "THS-011",
      "kind": "theory",
      "title": "Tartarian Antarctic reset in the 1800s",
      "url": "theory-vault.html#THS-011",
      "summary": "A civilization was abruptly frozen and erased during a nineteenth-century reset.",
      "claim": "A civilization was abruptly frozen and erased during a nineteenth-century reset.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Modern internet narrative incompatible with ancient ice-core chronology.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:f39a5b188d2f5ecdb127",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-011",
        "input_record_sha256": "b02ac84032a8b9784dd634c640f0059d6ce6876a30c6e268700dc9ea6ac04256",
        "original_fields": {
          "id": "THS-011",
          "title": "Tartarian Antarctic reset in the 1800s",
          "claim": "A civilization was abruptly frozen and erased during a nineteenth-century reset.",
          "category": "alternative history",
          "status": "Modern internet narrative incompatible with ancient ice-core chronology.",
          "counterevidence": "Modern internet narrative incompatible with ancient ice-core chronology.",
          "sources": [
            {
              "url": "https://www.managingexpectations.net/blog/articles/antarctic-ice-core-piri-reis-map-history.html",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "tartarian antarctic reset in the 1800s",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A civilization was abruptly frozen and erased during a nineteenth-century reset."
        }
      },
      "record_sha256": "6b1119db25557374c03c4ddfdbbc3364370c44bbf4bf3576e7f6a48257c8b7ef"
    },
    {
      "id": "theory:THS-012",
      "legacy_id": "THS-012",
      "kind": "theory",
      "title": "Russian announcement of living underground cities",
      "url": "theory-vault.html#THS-012",
      "summary": "Russia publicly revealed thriving settlements beneath the ice.",
      "claim": "Russia publicly revealed thriving settlements beneath the ice.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated announcement; radar evidence cited does not show such cities.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:845b2aceb4bb63646177",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-012",
        "input_record_sha256": "cf52f9f0458008ba088ee6ea500ac3e987fc47ef13f317df0a36152c08b22707",
        "original_fields": {
          "id": "THS-012",
          "title": "Russian announcement of living underground cities",
          "claim": "Russia publicly revealed thriving settlements beneath the ice.",
          "category": "fabricated announcement",
          "status": "No authenticated announcement; radar evidence cited does not show such cities.",
          "counterevidence": "No authenticated announcement; radar evidence cited does not show such cities.",
          "sources": [
            {
              "url": "https://www.yahoo.com/news/fact-check-no-truth-claims-210356847.html",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "russian announcement of living underground cities",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Russia publicly revealed thriving settlements beneath the ice."
        }
      },
      "record_sha256": "94ce35c13f403d79038ba2189c7a2bab274f5f55df3312347cb8f74f915c6326"
    },
    {
      "id": "theory:THS-013",
      "legacy_id": "THS-013",
      "kind": "theory",
      "title": "Short-term ice gain disproves warming",
      "url": "theory-vault.html#THS-013",
      "summary": "A brief gain in Antarctic ice mass establishes that human-caused warming is false.",
      "claim": "A brief gain in Antarctic ice mass establishes that human-caused warming is false.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Short-term precipitation-driven change does not overturn longer-term trends.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:08caa39ea2b3e59f47b4",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:eb8e580fb0538688cd9e",
          "role": "Aqua MODIS view of Antarctic sea ice on 24 February 2008. Sea-ice context; a single image does not establish a long-term climate trend.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/antarctic-summer-sea-ice.jpg",
          "caption": "Aqua MODIS view of Antarctic sea ice on 24 February 2008. Sea-ice context; a single image does not establish a long-term climate trend. NASA/Jeff Schmaltz, MODIS Rapid Response Team, Goddard Space Flight Center / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "Short-term ice gain disproves warming",
          "href": "theory-vault.html#THS-013"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-013",
        "input_record_sha256": "356c46b1101119e0070b264f6cc818c7947e1ec26def2aaebe74d57cbd24e426",
        "original_fields": {
          "id": "THS-013",
          "title": "Short-term ice gain disproves warming",
          "claim": "A brief gain in Antarctic ice mass establishes that human-caused warming is false.",
          "category": "climate misinterpretation",
          "status": "Short-term precipitation-driven change does not overturn longer-term trends.",
          "counterevidence": "Short-term precipitation-driven change does not overturn longer-term trends.",
          "sources": [
            {
              "url": "https://factcheck.afp.com/doc.afp.com.48FM4ZP",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://science.nasa.gov/earth/earth-observatory/antarctic-sea-ice-8503/",
              "role": "Aqua MODIS view of Antarctic sea ice on 24 February 2008. Sea-ice context; a single image does not establish a long-term climate trend."
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "short-term ice gain disproves warming",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A brief gain in Antarctic ice mass establishes that human-caused warming is false.",
          "supporting_images": [
            {
              "src": "thumbs/antarctic-summer-sea-ice.jpg",
              "caption": "Aqua MODIS view of Antarctic sea ice on 24 February 2008. Sea-ice context; a single image does not establish a long-term climate trend. NASA/Jeff Schmaltz, MODIS Rapid Response Team, Goddard Space Flight Center / Aspect-preserving resize only; no generative editing or cropping",
              "title": "Aqua MODIS view of Antarctic sea ice on 24 February 2008. Sea-ice context; a single image does not establish a long-term climate trend.",
              "source_url": "https://science.nasa.gov/earth/earth-observatory/antarctic-sea-ice-8503/",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
            }
          ]
        }
      },
      "record_sha256": "768f963971c3a2be9c0bb1400295f64a55a448fe6cb28c6e6aceaea9f4eb4140"
    },
    {
      "id": "theory:THS-014",
      "legacy_id": "THS-014",
      "kind": "theory",
      "title": "Deception Island UFO wave",
      "url": "theory-vault.html#THS-014",
      "summary": "Luminous objects reported at bases in 1965 were anomalous craft.",
      "claim": "Luminous objects reported at bases in 1965 were anomalous craft.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Reports exist; recorded testimony is not proof of extraterrestrial origin.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:60f4d10fca887f55cae1",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-014",
        "input_record_sha256": "a4282f6e9c957dddc34b8c359abd942c53d8cce3ec5cae2a1da7e0f4c3823800",
        "original_fields": {
          "id": "THS-014",
          "title": "Deception Island UFO wave",
          "claim": "Luminous objects reported at bases in 1965 were anomalous craft.",
          "category": "reported sighting",
          "status": "Reports exist; recorded testimony is not proof of extraterrestrial origin.",
          "counterevidence": "Reports exist; recorded testimony is not proof of extraterrestrial origin.",
          "sources": [
            {
              "url": "https://www.nicap.org/docs/antarctica/6507_nicap-nyc_trans2.htm",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "deception island ufo wave",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Luminous objects reported at bases in 1965 were anomalous craft."
        }
      },
      "record_sha256": "b410be17b6d9bd1f4163629cfb4f8da3e691d498911a2977bd29ba8acda9daa2"
    },
    {
      "id": "theory:THS-015",
      "legacy_id": "THS-015",
      "kind": "theory",
      "title": "Admiralty Bay transmedium UFO",
      "url": "theory-vault.html#THS-015",
      "summary": "A 1961 object broke through Antarctic ice before flying away.",
      "claim": "A 1961 object broke through Antarctic ice before flying away.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "UFO researcher Richard Dolan corrected the dramatic ice-emergence version.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:ade182ef4ac158cfc2de",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-015",
        "input_record_sha256": "25fa3d9758c34d8771139a1dc05e0652206636a2b9d26eae51949d845ca439d0",
        "original_fields": {
          "id": "THS-015",
          "title": "Admiralty Bay transmedium UFO",
          "claim": "A 1961 object broke through Antarctic ice before flying away.",
          "category": "embellished sighting",
          "status": "UFO researcher Richard Dolan corrected the dramatic ice-emergence version.",
          "counterevidence": "UFO researcher Richard Dolan corrected the dramatic ice-emergence version.",
          "sources": [
            {
              "url": "https://richarddolanmembers.com/articles/important-uso-case-that-never-happened/",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "admiralty bay transmedium ufo",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A 1961 object broke through Antarctic ice before flying away."
        }
      },
      "record_sha256": "ab09f6635483582e753227a478f3dae5536eef7dcbadfc4a68cccc4f8989f404"
    },
    {
      "id": "theory:THS-016",
      "legacy_id": "THS-016",
      "kind": "theory",
      "title": "Marines investigating three pyramids",
      "url": "theory-vault.html#THS-016",
      "summary": "Leaked video shows Marines entering newly discovered Antarctic pyramids.",
      "claim": "Leaked video shows Marines entering newly discovered Antarctic pyramids.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Altered Alaska exercise footage and natural peaks do not establish this mission.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:9fb41948b51a9c9e96f7",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-016",
        "input_record_sha256": "1c6f8b8ee038b591d522a9e1df10ef5bccb76261c988cc28751bb296f21c93d0",
        "original_fields": {
          "id": "THS-016",
          "title": "Marines investigating three pyramids",
          "claim": "Leaked video shows Marines entering newly discovered Antarctic pyramids.",
          "category": "video hoax",
          "status": "Altered Alaska exercise footage and natural peaks do not establish this mission.",
          "counterevidence": "Altered Alaska exercise footage and natural peaks do not establish this mission.",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2022/04/fact-check-marines-are-not-investigating-three-ancient-pyramids-in-antarctica.html",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "marines investigating three pyramids",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Leaked video shows Marines entering newly discovered Antarctic pyramids."
        }
      },
      "record_sha256": "9e22236332c901221b643467e79f58bbd8c488530d3ab2ced5288fdee1128c30"
    },
    {
      "id": "theory:THS-017",
      "legacy_id": "THS-017",
      "kind": "theory",
      "title": "Artificial Antarctic pyramids",
      "url": "theory-vault.html#THS-017",
      "summary": "Pyramid-shaped peaks were built by an ancient civilization.",
      "claim": "Pyramid-shaped peaks were built by an ancient civilization.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Pyramid-shaped mountain peaks are natural geological formations.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:b3537661266f4fabe03a",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-017",
        "input_record_sha256": "b2d74b5fd03417d86c26c47a2836220ff80246eded654ef1b79ad9cb02c2d993",
        "original_fields": {
          "id": "THS-017",
          "title": "Artificial Antarctic pyramids",
          "claim": "Pyramid-shaped peaks were built by an ancient civilization.",
          "category": "misidentification",
          "status": "Pyramid-shaped mountain peaks are natural geological formations.",
          "counterevidence": "Pyramid-shaped mountain peaks are natural geological formations.",
          "sources": [
            {
              "url": "https://politifact.com/factchecks/2022/apr/27/blog-posting/no-marines-arent-investigating-antarctica-pyramids/",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "artificial antarctic pyramids",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": "pyramids",
          "summary": "Pyramid-shaped peaks were built by an ancient civilization.",
          "reference_research_leads": {
            "reference_id": "t-pyramid",
            "items": [
              "Satellite images that went viral in 2016"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "409b99dd343eec30407cb69c3c2ba5d1e3b4e6eb8a551077e3f412397f43f615"
    },
    {
      "id": "theory:THS-018",
      "legacy_id": "THS-018",
      "kind": "theory",
      "title": "Heat-emitting crystal orbs",
      "url": "theory-vault.html#THS-018",
      "summary": "Ancient crystal spheres are awakening and causing Antarctic melting.",
      "claim": "Ancient crystal spheres are awakening and causing Antarctic melting.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated discovery; futuristic visuals are not physical evidence.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:b43a13bf18ca7ff08c3e",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-018",
        "input_record_sha256": "ba2431d79213256107876ce53fef6acbf0e5f6f974860bc9cedee94d8fa63b38",
        "original_fields": {
          "id": "THS-018",
          "title": "Heat-emitting crystal orbs",
          "claim": "Ancient crystal spheres are awakening and causing Antarctic melting.",
          "category": "fabricated discovery",
          "status": "No authenticated discovery; futuristic visuals are not physical evidence.",
          "counterevidence": "No authenticated discovery; futuristic visuals are not physical evidence.",
          "sources": [
            {
              "url": "https://factchequeado.com/verificaciones/20260529/cientificos-descubierto-piramides-orbes-calientes-antartida/",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "heat-emitting crystal orbs",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Ancient crystal spheres are awakening and causing Antarctic melting."
        }
      },
      "record_sha256": "c7612057b89d7e57ce7e60ad507b71fdec2f3c0a2c7c0549fd9c27ff0586e1a1"
    },
    {
      "id": "theory:THS-019",
      "legacy_id": "THS-019",
      "kind": "theory",
      "title": "Google Earth Antarctic kraken",
      "url": "theory-vault.html#THS-019",
      "summary": "A satellite image near Deception Island captured a huge tentacled animal.",
      "claim": "A satellite image near Deception Island captured a huge tentacled animal.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Object identified as rocks, not a verified organism.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:28921505d7402d8bc6fe",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-019",
        "input_record_sha256": "f03d16f7fd2530e1bd9fb0250e1528e556bd28381c16cbaff91c6d5bb4f38db0",
        "original_fields": {
          "id": "THS-019",
          "title": "Google Earth Antarctic kraken",
          "claim": "A satellite image near Deception Island captured a huge tentacled animal.",
          "category": "misidentification",
          "status": "Object identified as rocks, not a verified organism.",
          "counterevidence": "Object identified as rocks, not a verified organism.",
          "sources": [
            {
              "url": "https://www.ibtimes.co.uk/google-earth-mysterious-sea-monster-discovered-be-just-big-pile-rocks-1566711",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "google earth antarctic kraken",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A satellite image near Deception Island captured a huge tentacled animal."
        }
      },
      "record_sha256": "617898b565ba412d9484d10a041ca6aa079528b8c0de54f5565971e941534999"
    },
    {
      "id": "theory:THS-020",
      "legacy_id": "THS-020",
      "kind": "theory",
      "title": "Frozen giant hand image",
      "url": "theory-vault.html#THS-020",
      "summary": "An expedition photograph reveals an enormous humanoid buried in ice.",
      "claim": "An expedition photograph reveals an enormous humanoid buried in ice.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Creator explicitly disclosed Photoshop artwork; not an archaeological find.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:cd3f71c8e458a7a99030",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-020",
        "input_record_sha256": "e9bdc84aadfeac6332d84b87d1e36bc96451c5fa5f118e1445de453c05828f22",
        "original_fields": {
          "id": "THS-020",
          "title": "Frozen giant hand image",
          "claim": "An expedition photograph reveals an enormous humanoid buried in ice.",
          "category": "admitted image fiction",
          "status": "Creator explicitly disclosed Photoshop artwork; not an archaeological find.",
          "counterevidence": "Creator explicitly disclosed Photoshop artwork; not an archaeological find.",
          "sources": [
            {
              "url": "https://www.reddit.com/r/megalophobia/comments/w6vnlo",
              "role": "claim documentation or assessment"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "frozen giant hand image",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "disputed",
          "map_id": null,
          "summary": "An expedition photograph reveals an enormous humanoid buried in ice."
        }
      },
      "record_sha256": "e22d643b10215e634bbbfeeb4d98b8b7afb2280a99d6471af4fd122e8bf472b4"
    },
    {
      "id": "theory:THS-021",
      "legacy_id": "THS-021",
      "kind": "theory",
      "title": "Ozone depletion from descending nitrogen oxides",
      "url": "theory-vault.html#THS-021",
      "summary": "Mesospheric nitrogen oxides transported downward explain the Antarctic ozone hole.",
      "claim": "Mesospheric nitrogen oxides transported downward explain the Antarctic ozone hole.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "context",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "1986 observations of low nitrogen dioxide argued against this explanation.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:79038df8b2f52e6b23cd",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:9013bad24981930a1b88",
          "role": "Scientific visualization context, not proof of speculative interpretation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/antarctic-ozone-2014-thumb.jpg",
          "caption": "Scientific visualization of 2014 Antarctic ozone depletion from AIRS data; not an opening in the ice or Earth. NASA/JPL-Caltech Scientific source ↗",
          "title": "Ozone depletion from descending nitrogen oxides",
          "href": "theory-vault.html#THS-021"
        },
        "reuse_notice": "NASA media guidelines permit factual educational/informational website use; no third-party copyright notice in item metadata. Do not imply endorsement.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-021",
        "input_record_sha256": "5556c579fa86455e289c5452173665255c95028bc6abd6a1b2019eea33eebc8a",
        "original_fields": {
          "id": "THS-021",
          "title": "Ozone depletion from descending nitrogen oxides",
          "claim": "Mesospheric nitrogen oxides transported downward explain the Antarctic ozone hole.",
          "category": "historical scientific hypothesis",
          "status": "1986 observations of low nitrogen dioxide argued against this explanation.",
          "counterevidence": "1986 observations of low nitrogen dioxide argued against this explanation.",
          "sources": [
            {
              "url": "https://mark4sun.jpl.nasa.gov/mcm86.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/PIA20664",
              "role": "Scientific visualization context, not proof of speculative interpretation"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "ozone depletion from descending nitrogen oxides",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "context",
          "map_id": null,
          "summary": "Mesospheric nitrogen oxides transported downward explain the Antarctic ozone hole.",
          "display_image": {
            "src": "thumbs/antarctic-ozone-2014-thumb.jpg",
            "credit": "NASA/JPL-Caltech",
            "caption": "Scientific visualization of 2014 Antarctic ozone depletion from AIRS data; not an opening in the ice or Earth.",
            "rights": "NASA media guidelines permit factual educational/informational website use; no third-party copyright notice in item metadata. Do not imply endorsement.",
            "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/"
          }
        }
      },
      "record_sha256": "16cd50c3e9d555bbf2920de16202862a140656ef1f6ab3560e489a942c4d7646"
    },
    {
      "id": "theory:THS-022",
      "legacy_id": "THS-022",
      "kind": "theory",
      "title": "Ozone hole from rising ozone-poor air",
      "url": "theory-vault.html#THS-022",
      "summary": "Changed circulation lofts ozone-poor air into the lower stratosphere.",
      "claim": "Changed circulation lofts ozone-poor air into the lower stratosphere.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "context",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Measured tracer abundances argued against this as the cause.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:79038df8b2f52e6b23cd",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:9013bad24981930a1b88",
          "role": "Scientific visualization context, not proof of speculative interpretation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/antarctic-ozone-2014-thumb.jpg",
          "caption": "Scientific visualization of 2014 Antarctic ozone depletion from AIRS data; not an opening in the ice or Earth. NASA/JPL-Caltech Scientific source ↗",
          "title": "Ozone hole from rising ozone-poor air",
          "href": "theory-vault.html#THS-022"
        },
        "reuse_notice": "NASA media guidelines permit factual educational/informational website use; no third-party copyright notice in item metadata. Do not imply endorsement.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-022",
        "input_record_sha256": "f58f91c719e1d0c279a8e1410d56c20c14afa19873913b0c30a82e85d8d5d419",
        "original_fields": {
          "id": "THS-022",
          "title": "Ozone hole from rising ozone-poor air",
          "claim": "Changed circulation lofts ozone-poor air into the lower stratosphere.",
          "category": "historical scientific hypothesis",
          "status": "Measured tracer abundances argued against this as the cause.",
          "counterevidence": "Measured tracer abundances argued against this as the cause.",
          "sources": [
            {
              "url": "https://mark4sun.jpl.nasa.gov/mcm86.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/PIA20664",
              "role": "Scientific visualization context, not proof of speculative interpretation"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "ozone hole from rising ozone-poor air",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "context",
          "map_id": null,
          "summary": "Changed circulation lofts ozone-poor air into the lower stratosphere.",
          "display_image": {
            "src": "thumbs/antarctic-ozone-2014-thumb.jpg",
            "credit": "NASA/JPL-Caltech",
            "caption": "Scientific visualization of 2014 Antarctic ozone depletion from AIRS data; not an opening in the ice or Earth.",
            "rights": "NASA media guidelines permit factual educational/informational website use; no third-party copyright notice in item metadata. Do not imply endorsement.",
            "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/"
          }
        }
      },
      "record_sha256": "00073dd747d82c5dece6c2302c59b5cc6d01ef338fe40cbd86e2fe8c2814a73d"
    },
    {
      "id": "theory:THS-023",
      "legacy_id": "THS-023",
      "kind": "theory",
      "title": "Chlorine and bromine ozone destruction",
      "url": "theory-vault.html#THS-023",
      "summary": "Halogen chemistry under polar conditions causes severe seasonal ozone depletion.",
      "claim": "Halogen chemistry under polar conditions causes severe seasonal ozone depletion.",
      "topics": [
        "Science & anomalies"
      ],
      "assessment": {
        "label": "context",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Supported by measurements; included separately from conspiracy claims, not an unresolved mystery.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:79038df8b2f52e6b23cd",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:9013bad24981930a1b88",
          "role": "Scientific visualization context, not proof of speculative interpretation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/antarctic-ozone-2014-thumb.jpg",
          "caption": "Scientific visualization of 2014 Antarctic ozone depletion from AIRS data; not an opening in the ice or Earth. NASA/JPL-Caltech Scientific source ↗",
          "title": "Chlorine and bromine ozone destruction",
          "href": "theory-vault.html#THS-023"
        },
        "reuse_notice": "NASA media guidelines permit factual educational/informational website use; no third-party copyright notice in item metadata. Do not imply endorsement.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THS-023",
        "input_record_sha256": "d7b34a15eabecdbf202fff94a28584eccb0c27081760f6c47b527e273cd87ca2",
        "original_fields": {
          "id": "THS-023",
          "title": "Chlorine and bromine ozone destruction",
          "claim": "Halogen chemistry under polar conditions causes severe seasonal ozone depletion.",
          "category": "supported scientific explanation",
          "status": "Supported by measurements; included separately from conspiracy claims, not an unresolved mystery.",
          "counterevidence": "Supported by measurements; included separately from conspiracy claims, not an unresolved mystery.",
          "sources": [
            {
              "url": "https://mark4sun.jpl.nasa.gov/mcm86.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/PIA20664",
              "role": "Scientific visualization context, not proof of speculative interpretation"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "chlorine and bromine ozone destruction",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Science & anomalies",
          "kind": "theory",
          "label": "context",
          "map_id": null,
          "summary": "Halogen chemistry under polar conditions causes severe seasonal ozone depletion.",
          "display_image": {
            "src": "thumbs/antarctic-ozone-2014-thumb.jpg",
            "credit": "NASA/JPL-Caltech",
            "caption": "Scientific visualization of 2014 Antarctic ozone depletion from AIRS data; not an opening in the ice or Earth.",
            "rights": "NASA media guidelines permit factual educational/informational website use; no third-party copyright notice in item metadata. Do not imply endorsement.",
            "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/"
          }
        }
      },
      "record_sha256": "4b8ffb298cda5e2036b2b9b14a4497d48b42fc5f96a3ba38431c1398d392961b"
    },
    {
      "id": "theory:THX-001",
      "legacy_id": "THX-001",
      "kind": "theory",
      "title": "Antarctic planetary motherboard",
      "url": "theory-vault.html#THX-001",
      "summary": "Crystalline matrices and etheric nodes beneath Antarctica form a planet-wide control network affecting consciousness.",
      "claim": "Crystalline matrices and etheric nodes beneath Antarctica form a planet-wide control network affecting consciousness.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
        "limitations": "Distinct from IceCube device allegations: purported ancient planetary infrastructure."
      },
      "sources": [
        {
          "source_id": "source:5b2506009eb577549254",
          "role": "published claimant account",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THX-001",
        "input_record_sha256": "883c06b4dcb4b98eab0a7c9cc54710f6e2b6e6093658d8adfaa87b481dc9e452",
        "original_fields": {
          "id": "THX-001",
          "title": "Antarctic planetary motherboard",
          "claim": "Crystalline matrices and etheric nodes beneath Antarctica form a planet-wide control network affecting consciousness.",
          "category": "exopolitics",
          "status": "Christopher Macklin broadcast claim; no validated physical network or mechanism.",
          "counterevidence": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
          "sources": [
            {
              "url": "https://www.coasttocoastam.com/alternate/amp/show/2026-07-17-show/",
              "role": "published claimant account"
            }
          ],
          "limitations": "Distinct from IceCube device allegations: purported ancient planetary infrastructure.",
          "claim_family": "antarctic planetary motherboard",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Crystalline matrices and etheric nodes beneath Antarctica form a planet-wide control network affecting consciousness."
        }
      },
      "record_sha256": "de1ef708045e40a8bf4b66c5f95b862d2fd036be7c41eae682722c8e5ed1eb82"
    },
    {
      "id": "theory:THX-002",
      "legacy_id": "THX-002",
      "kind": "theory",
      "title": "Benevolent beings in surface pods",
      "url": "theory-vault.html#THX-002",
      "summary": "Benevolent extraterrestrials inhabit near-surface Antarctic pods and avoid human contact.",
      "claim": "Benevolent extraterrestrials inhabit near-surface Antarctic pods and avoid human contact.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
        "limitations": "Same broadcast as planetary-motherboard claim, different population/location proposition."
      },
      "sources": [
        {
          "source_id": "source:5b2506009eb577549254",
          "role": "published claimant account",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THX-002",
        "input_record_sha256": "b637714dd66c3e0ccbde203cefaa92b5bfb89456b16158f269bd6ada30d8eeff",
        "original_fields": {
          "id": "THX-002",
          "title": "Benevolent beings in surface pods",
          "claim": "Benevolent extraterrestrials inhabit near-surface Antarctic pods and avoid human contact.",
          "category": "exopolitics",
          "status": "Broadcast allegation, not a verified biological discovery.",
          "counterevidence": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
          "sources": [
            {
              "url": "https://www.coasttocoastam.com/alternate/amp/show/2026-07-17-show/",
              "role": "published claimant account"
            }
          ],
          "limitations": "Same broadcast as planetary-motherboard claim, different population/location proposition.",
          "claim_family": "benevolent beings in surface pods",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Benevolent extraterrestrials inhabit near-surface Antarctic pods and avoid human contact."
        }
      },
      "record_sha256": "996ba9b5d4f393bb5dcfdc887b80d8d68bc8c697444fa8e884d6ae9a13396e04"
    },
    {
      "id": "theory:THX-003",
      "legacy_id": "THX-003",
      "kind": "theory",
      "title": "Kruger consciousness-transfer soldiers",
      "url": "theory-vault.html#THX-003",
      "summary": "A surviving covert organization uses Antarctic facilities and soul-splitting technology for off-world soldier missions.",
      "claim": "A surviving covert organization uses Antarctic facilities and soul-splitting technology for off-world soldier missions.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
        "limitations": "Recovered-memory assertions do not establish technology or historical service."
      },
      "sources": [
        {
          "source_id": "source:9a3798e7aa1a58299244",
          "role": "published claimant account",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THX-003",
        "input_record_sha256": "f7e0174f34e12c4e154691f06006b70fbfa9be40f6b5bdb2d83ada2606fdb62c",
        "original_fields": {
          "id": "THX-003",
          "title": "Kruger consciousness-transfer soldiers",
          "claim": "A surviving covert organization uses Antarctic facilities and soul-splitting technology for off-world soldier missions.",
          "category": "exopolitics",
          "status": "Sébastien Martin recovered-memory account; no authenticated program records.",
          "counterevidence": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
          "sources": [
            {
              "url": "https://www.gaia.com/video/recovered-memories-reveal-super-soldier-program",
              "role": "published claimant account"
            }
          ],
          "limitations": "Recovered-memory assertions do not establish technology or historical service.",
          "claim_family": "kruger consciousness-transfer soldiers",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A surviving covert organization uses Antarctic facilities and soul-splitting technology for off-world soldier missions."
        }
      },
      "record_sha256": "867a1db803079b4395412d3da943d3d348f4c5f0d18637196ffabae63f41eae6"
    },
    {
      "id": "theory:THX-004",
      "legacy_id": "THX-004",
      "kind": "theory",
      "title": "Antarctic Lyxodon avatar manufacture",
      "url": "theory-vault.html#THX-004",
      "summary": "An Antarctic program manufactures light-soldier avatar bodies for consciousness transfer.",
      "claim": "An Antarctic program manufactures light-soldier avatar bodies for consciousness transfer.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
        "limitations": "Related to supersoldier lore but separate claimant and specifically named manufacturing claim."
      },
      "sources": [
        {
          "source_id": "source:96d2f56ef49644775d8e",
          "role": "published claimant account",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THX-004",
        "input_record_sha256": "33435c9e7e02587751c62cf0ae20d0857ee5b61d11f4998f71ff38f030ec7251",
        "original_fields": {
          "id": "THX-004",
          "title": "Antarctic Lyxodon avatar manufacture",
          "claim": "An Antarctic program manufactures light-soldier avatar bodies for consciousness transfer.",
          "category": "exopolitics",
          "status": "James Rink interview allegation; no independently verified biological or engineering evidence.",
          "counterevidence": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
          "sources": [
            {
              "url": "https://fight.fudgie.org/search/show/pc/episode/20230628_Wed_v2uazqh",
              "role": "published claimant account"
            }
          ],
          "limitations": "Related to supersoldier lore but separate claimant and specifically named manufacturing claim.",
          "claim_family": "antarctic lyxodon avatar manufacture",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "An Antarctic program manufactures light-soldier avatar bodies for consciousness transfer."
        }
      },
      "record_sha256": "f184d944adaf125a1419ecdaf30db95317666b05bbfa5cacd6a6cf05b9faba6d"
    },
    {
      "id": "theory:THX-005",
      "legacy_id": "THX-005",
      "kind": "theory",
      "title": "Activating Vostok space ark heats Antarctica",
      "url": "theory-vault.html#THX-005",
      "summary": "An ancient space ark and pyramid generator beneath Lake Vostok are activating and causing warming.",
      "claim": "An ancient space ark and pyramid generator beneath Lake Vostok are activating and causing warming.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
        "limitations": "Related to buried-mothership narrative; specific heatwave causation claim, not ordinary geothermal research."
      },
      "sources": [
        {
          "source_id": "source:c091098f3d3486484662",
          "role": "published claimant account",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#THX-005",
        "input_record_sha256": "21a1c24d51a1e782dbbcbd03a0ffccd034183959002e1e33f1cfc3fe0c4155c9",
        "original_fields": {
          "id": "THX-005",
          "title": "Activating Vostok space ark heats Antarctica",
          "claim": "An ancient space ark and pyramid generator beneath Lake Vostok are activating and causing warming.",
          "category": "exopolitics",
          "status": "Fringe contactee interpretation; no authenticated ark or demonstrated climatic causation.",
          "counterevidence": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
          "sources": [
            {
              "url": "https://www.bibliotecapleyades.net/antarctica/antartica119.htm",
              "role": "published claimant account"
            }
          ],
          "limitations": "Related to buried-mothership narrative; specific heatwave causation claim, not ordinary geothermal research.",
          "claim_family": "activating vostok space ark heats antarctica",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "An ancient space ark and pyramid generator beneath Lake Vostok are activating and causing warming."
        }
      },
      "record_sha256": "0d9f3920c93812edc9c8999370be5ed195a8a953672bbdc688c1735145b2f2dc"
    },
    {
      "id": "video:66SP6IGBn9Y",
      "legacy_id": "66SP6IGBn9Y",
      "kind": "video",
      "title": "Ancient Aliens: Crystal City segment",
      "url": "watch.html#video-66SP6IGBn9Y",
      "summary": "Speculative entertainment / verify claimed location",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Speculative entertainment / verify claimed location",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:a514e33b1e7948e2ca97",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "66SP6IGBn9Y",
        "input_record_sha256": "b9700ca036b55eed2a2c2e85fac57fee49066f7954c08bbfc4f8aeed59375254",
        "original_fields": {
          "id": "66SP6IGBn9Y",
          "title": "Ancient Aliens: Crystal City segment",
          "creator": "HISTORY",
          "description": "Speculative entertainment / verify claimed location",
          "url": "https://www.youtube.com/watch?v=66SP6IGBn9Y"
        }
      },
      "record_sha256": "222d7c6c078a28ffa844b81ae3f9a6e38b2a82a5ae9dd44cad222ec80f8fb01d"
    },
    {
      "id": "video:IQz7innxnms",
      "legacy_id": "IQz7innxnms",
      "kind": "video",
      "title": "Mysteries Beneath the Ice: The Secrets of Antarctica",
      "url": "watch.html#video-IQz7innxnms",
      "summary": "Mystery / speculative narrative",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Mystery / speculative narrative",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:1fd98957ee7cace60834",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "IQz7innxnms",
        "input_record_sha256": "f2fe9d5637a9a921c521c53eaec0eecd73f32abb51ac5c7ba2c490b4fdd12eb8",
        "original_fields": {
          "id": "IQz7innxnms",
          "title": "Mysteries Beneath the Ice: The Secrets of Antarctica",
          "creator": "The Why Files",
          "description": "Mystery / speculative narrative",
          "url": "https://www.youtube.com/watch?v=IQz7innxnms"
        }
      },
      "record_sha256": "e5d953bae6ea6be950d929053178152aa2363fbc3ed11f257a487a41581d900e"
    },
    {
      "id": "video:SJ1g0dxPBgA",
      "legacy_id": "SJ1g0dxPBgA",
      "kind": "video",
      "title": "Inner Earth",
      "url": "watch.html#video-SJ1g0dxPBgA",
      "summary": "Speculative narrative",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Speculative narrative",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:af448da5e60c417e7476",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "SJ1g0dxPBgA",
        "input_record_sha256": "6f9ed6f8d428e2b41690096cd41ed4e397e72f3500cc9d99a3400bbe7566a436",
        "original_fields": {
          "id": "SJ1g0dxPBgA",
          "title": "Inner Earth",
          "creator": "Mr Mythos",
          "description": "Speculative narrative",
          "url": "https://www.youtube.com/watch?v=SJ1g0dxPBgA"
        }
      },
      "record_sha256": "a22f16a7ca8d4b1bedb2dcb263793b79ab5965f0c0686960dc8db3a4c267f3cd"
    },
    {
      "id": "video:TVHe9ovnWJI",
      "legacy_id": "TVHe9ovnWJI",
      "kind": "video",
      "title": "Antarctic research stations in 360°",
      "url": "watch.html#video-TVHe9ovnWJI",
      "summary": "Official field-access perspective",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Official field-access perspective",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:a927a3e32364a7729d15",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "TVHe9ovnWJI",
        "input_record_sha256": "a51aff5b8de2261705eacd48204b0c80e63c62bb05f6a32014c8891919326d67",
        "original_fields": {
          "id": "TVHe9ovnWJI",
          "title": "Antarctic research stations in 360°",
          "creator": "National Science Foundation",
          "description": "Official field-access perspective",
          "url": "https://www.youtube.com/watch?v=TVHe9ovnWJI"
        }
      },
      "record_sha256": "5ac3dfd78c2e57caeda1b680f7727a0c294e43cf30af9b4f334cd0624263add7"
    },
    {
      "id": "video:_vFxGhRq4N4",
      "legacy_id": "_vFxGhRq4N4",
      "kind": "video",
      "title": "This Is Why You Can’t Go To Antarctica",
      "url": "watch.html#video-_vFxGhRq4N4",
      "summary": "Explainer / title is not a blanket-ban fact",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Explainer / title is not a blanket-ban fact",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:27fe58e0874ad74e9f45",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "_vFxGhRq4N4",
        "input_record_sha256": "fc82f0a007abd8c875403c87d68930ff9e6f80513554c8aaf15a68e9170b6ff1",
        "original_fields": {
          "id": "_vFxGhRq4N4",
          "title": "This Is Why You Can’t Go To Antarctica",
          "creator": "Joe Scott",
          "description": "Explainer / title is not a blanket-ban fact",
          "url": "https://www.youtube.com/watch?v=_vFxGhRq4N4"
        }
      },
      "record_sha256": "10ac8f1c94746612f93b8d0670986dd682aa35c0c05dbbff7da91b8106e32753"
    },
    {
      "id": "video:aFv4Ozt_ra4",
      "legacy_id": "aFv4Ozt_ra4",
      "kind": "video",
      "title": "Bottom of the World",
      "url": "watch.html#video-aFv4Ozt_ra4",
      "summary": "Official research perspective",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Official research perspective",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:b1a55f5381f40ac9c3ee",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "aFv4Ozt_ra4",
        "input_record_sha256": "b713e2deb9abe411c255e0e6b150b9b68f504696698aa74387b9b4070a37a3fd",
        "original_fields": {
          "id": "aFv4Ozt_ra4",
          "title": "Bottom of the World",
          "creator": "National Science Foundation",
          "description": "Official research perspective",
          "url": "https://www.youtube.com/watch?v=aFv4Ozt_ra4"
        }
      },
      "record_sha256": "dd3445920058bb259b456b0b57bd081e13ffd9da2642156caa9b78411e499e66"
    },
    {
      "id": "video:in0B1OQG3-M",
      "legacy_id": "in0B1OQG3-M",
      "kind": "video",
      "title": "24-hour Antarctic sun",
      "url": "watch.html#video-in0B1OQG3-M",
      "summary": "Observation footage",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Observation footage",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:e3e6ab7292538c0c41c3",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "in0B1OQG3-M",
        "input_record_sha256": "7b8b7c9cf3cbe2b9fb18b17b65b29dc0096997b026226b10d20dd24bdbd3c5e6",
        "original_fields": {
          "id": "in0B1OQG3-M",
          "title": "24-hour Antarctic sun",
          "creator": "Dave McKeegan",
          "description": "Observation footage",
          "url": "https://www.youtube.com/watch?v=in0B1OQG3-M"
        }
      },
      "record_sha256": "bf5f7f091bbd2eebe4623fcb4c54213f386827b9ea1c5751438945309c5e00c4"
    },
    {
      "id": "video:jliLRasB48U",
      "legacy_id": "jliLRasB48U",
      "kind": "video",
      "title": "360° sun observation",
      "url": "watch.html#video-jliLRasB48U",
      "summary": "Observation footage",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Observation footage",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:d64ee81eac6287383a9f",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "jliLRasB48U",
        "input_record_sha256": "700fd0c609155748a43271e02815b6f83b753eab3b9916df58e27afa112c736b",
        "original_fields": {
          "id": "jliLRasB48U",
          "title": "360° sun observation",
          "creator": "Dave McKeegan",
          "description": "Observation footage",
          "url": "https://www.youtube.com/watch?v=jliLRasB48U"
        }
      },
      "record_sha256": "0ec7e3f52c9c1d0d07b27e9d386cc424e6bdef64c4d5655436654bf2a614174d"
    },
    {
      "id": "video:sl61HnhDDeA",
      "legacy_id": "sl61HnhDDeA",
      "kind": "video",
      "title": "Flight: Punta Arenas to Union Glacier",
      "url": "watch.html#video-sl61HnhDDeA",
      "summary": "Travel footage",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Travel footage",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:40a2853c3045377574f2",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "sl61HnhDDeA",
        "input_record_sha256": "4b96b99db67f136d02daaa1ba0e86302a9fd3e100d186fdd76c2207b825c145a",
        "original_fields": {
          "id": "sl61HnhDDeA",
          "title": "Flight: Punta Arenas to Union Glacier",
          "creator": "Dave McKeegan",
          "description": "Travel footage",
          "url": "https://www.youtube.com/watch?v=sl61HnhDDeA"
        }
      },
      "record_sha256": "441b33abc87df1e2fcbb2f686ac76b77f438d8ff84e8b38433f8931cb8eae2ad"
    },
    {
      "id": "video:vNGG91BJTfQ",
      "legacy_id": "vNGG91BJTfQ",
      "kind": "video",
      "title": "Full expedition flight",
      "url": "watch.html#video-vNGG91BJTfQ",
      "summary": "Travel footage",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Travel footage",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:64b1adb74892ac3631e4",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "vNGG91BJTfQ",
        "input_record_sha256": "5701278a5a8cd51ed79ed3d65fb4d3f49a6f243dcfd30cbbf92426d115a2700d",
        "original_fields": {
          "id": "vNGG91BJTfQ",
          "title": "Full expedition flight",
          "creator": "MCToon",
          "description": "Travel footage",
          "url": "https://youtu.be/vNGG91BJTfQ"
        }
      },
      "record_sha256": "bb93e0981207c89e90437b93deb1291f774aa2d50eef2a72d560fd2aa409d842"
    },
    {
      "id": "video:wDcUUTwy6pA",
      "legacy_id": "wDcUUTwy6pA",
      "kind": "video",
      "title": "Under the Ice",
      "url": "watch.html#video-wDcUUTwy6pA",
      "summary": "Official research perspective",
      "claim": null,
      "topics": [
        "Watch"
      ],
      "assessment": {
        "label": "unreviewed_video",
        "scope": "Creator attribution and perspective are catalog metadata, not verification of every statement.",
        "text": "Official research perspective",
        "limitations": "Playback and embed availability not independently confirmed."
      },
      "sources": [
        {
          "source_id": "source:8c4f29db884f6a0b427e",
          "role": "original creator video",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "click_to_load_external_player",
        "asset": null,
        "reuse_notice": "YouTube original-channel embed; no local video copy.",
        "limitations": "Editorial cover graphic is not a video frame."
      },
      "dates": {
        "artifact_date_text": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "videos.json",
        "input_key": "wDcUUTwy6pA",
        "input_record_sha256": "da3aeab0038552d6d9aa4531f574da6cb2fe2d397dfb10e011d3b57399f00d60",
        "original_fields": {
          "id": "wDcUUTwy6pA",
          "title": "Under the Ice",
          "creator": "National Science Foundation",
          "description": "Official research perspective",
          "url": "https://www.youtube.com/watch?v=wDcUUTwy6pA"
        }
      },
      "record_sha256": "f0f4aac379f1158678e84e6a822033c19dcdb34b1e056ed1fe71f7a3ee0eca90"
    }
  ],
  "sources": [
    {
      "id": "source:00ec48ecd3e90bbab1c4",
      "url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/worldmap1507/index.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:01a4974a1cae9a98ccd9",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=15264",
      "last_http_checked_at": null
    },
    {
      "id": "source:020a3c4044da46ebe2a8",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=96",
      "last_http_checked_at": null
    },
    {
      "id": "source:021db2e2962a13f0bc4f",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f189",
      "last_http_checked_at": null
    },
    {
      "id": "source:034409f0d2260f9af594",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-458",
      "last_http_checked_at": null
    },
    {
      "id": "source:035b5facc0fb592ba800",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124133",
      "last_http_checked_at": null
    },
    {
      "id": "source:03ac0d31d3e11c46bdd7",
      "url": "https://nsarchive2.gwu.edu/NSAEBB/NSAEBB190/",
      "last_http_checked_at": null
    },
    {
      "id": "source:04b0cfe077cd05ceb001",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3708",
      "last_http_checked_at": null
    },
    {
      "id": "source:04b8c055fe86f38a200b",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212314",
      "last_http_checked_at": null
    },
    {
      "id": "source:04bdecb138db9253fe52",
      "url": "https://blog.biodiversitylibrary.org/2015/06/world-oceans-day-through-books-truth",
      "last_http_checked_at": null
    },
    {
      "id": "source:04d4b8e0acd640cd8fff",
      "url": "https://exopolitics.org/did-martian-refugees-settle-in-antarctica-over-a-million-years-ago/",
      "last_http_checked_at": null
    },
    {
      "id": "source:0555cf3a3588232689b2",
      "url": "https://www.cambridge.org/core/journals/polar-record/article/abs/southern-maori-perspective-on-stories-of-polynesian-polar-voyaging/CD692ED61C1DAB8F33653C6FCFDDE366",
      "last_http_checked_at": null
    },
    {
      "id": "source:05ed2704e8becabfd011",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-172",
      "last_http_checked_at": null
    },
    {
      "id": "source:060f80ef09da2626957a",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3710",
      "last_http_checked_at": null
    },
    {
      "id": "source:06661f7e5516c5d29ed4",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f318",
      "last_http_checked_at": null
    },
    {
      "id": "source:06a6575b3a5229e0b999",
      "url": "https://www.yahoo.com/news/no-antarctica-not-ice-wall-224441366.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:075d3a8353ebda5daac8",
      "url": "https://exopolitics.org/secret-space-programs-battle-over-antarctic-skies-during-global-elite-exodus/",
      "last_http_checked_at": null
    },
    {
      "id": "source:0773287b0ba020e7416b",
      "url": "https://www.ninefornews.nl/onderzoeker-spot-gezicht-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:077bbf65c678ee98cc1e",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-953",
      "last_http_checked_at": null
    },
    {
      "id": "source:0812ecdb88a96007e511",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124722",
      "last_http_checked_at": null
    },
    {
      "id": "source:08caa39ea2b3e59f47b4",
      "url": "https://factcheck.afp.com/doc.afp.com.48FM4ZP",
      "last_http_checked_at": null
    },
    {
      "id": "source:09546644b849faa7af72",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-233629",
      "last_http_checked_at": null
    },
    {
      "id": "source:09e7ee41eda2dfd17161",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=13393",
      "last_http_checked_at": null
    },
    {
      "id": "source:0af575398f29a2a48483",
      "url": "https://www.paesta.org/sites/default/files/digital_library/denying-apollo-moon-landings.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:0b16175e00c1d2b43343",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4019",
      "last_http_checked_at": null
    },
    {
      "id": "source:0beb6d5def9bf5f8fa54",
      "url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/",
      "last_http_checked_at": null
    },
    {
      "id": "source:0e17729194108c35bc2f",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3704",
      "last_http_checked_at": null
    },
    {
      "id": "source:0f9d529da3937c9b0c50",
      "url": "https://www.ufosightingsdaily.com/2023/12/tiny-humans-in-antarctica-google-earth.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:100796df052220881513",
      "url": "https://lima.usgs.gov/",
      "last_http_checked_at": null
    },
    {
      "id": "source:11a6e51e04f7c02c49b1",
      "url": "https://catalogue.bnf.fr/ark:/12148/cb40699514m",
      "last_http_checked_at": null
    },
    {
      "id": "source:11e31403bc4c75aafe1c",
      "url": "https://nsidc.org/data/nsidc-0756/versions/3",
      "last_http_checked_at": null
    },
    {
      "id": "source:11f5c332e0af90b11627",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3707",
      "last_http_checked_at": null
    },
    {
      "id": "source:12404317d5f1d56032f6",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-317",
      "last_http_checked_at": null
    },
    {
      "id": "source:12aa8d28ba2fce8f93f5",
      "url": "https://www.splcenter.org/resources/hatewatch/close-encounters-racist-kind/",
      "last_http_checked_at": null
    },
    {
      "id": "source:13f6cc8b910cbe33b1d5",
      "url": "https://exodusredux.com/the-final-experiment-hoax/",
      "last_http_checked_at": null
    },
    {
      "id": "source:1437e02de038b0f74697",
      "url": "https://www.loc.gov/item/2009633384/",
      "last_http_checked_at": null
    },
    {
      "id": "source:14b9f52f82bd04dc65f9",
      "url": "https://www.loc.gov/item/2021668428/",
      "last_http_checked_at": null
    },
    {
      "id": "source:154e1dffdcfb6c33da6d",
      "url": "https://cryptome.org/2013/01/aaron-swartz/Conspiracy-Culture.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:1555b6cec20d17355a3b",
      "url": "https://bigthink.com/surprising-science/these-rectangular-icebergs-seem-cut-by-aliens-but-theyre-not/",
      "last_http_checked_at": null
    },
    {
      "id": "source:1635b3fef2c5c47b547c",
      "url": "https://www.creepynautas.com/expedientes/plasmasaurios-antartida",
      "last_http_checked_at": null
    },
    {
      "id": "source:1690a9e4ff4684209161",
      "url": "https://leadstories.com/hoax-alert/2022/11/fact-check-no-evidence-that-russia-is-the-first-country-to-break-the-antarctic-treaty.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:199d6375b629f76be489",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3515",
      "last_http_checked_at": null
    },
    {
      "id": "source:19eb5e4040bb8546a318",
      "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
      "last_http_checked_at": null
    },
    {
      "id": "source:1a4702485de5059682d2",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-319",
      "last_http_checked_at": null
    },
    {
      "id": "source:1bccb445530a4cb42ee4",
      "url": "https://pubmed.ncbi.nlm.nih.gov/36286587/",
      "last_http_checked_at": null
    },
    {
      "id": "source:1df47bd344a3042e8a0c",
      "url": "https://www.youtube.com/watch?v=Mz3-DRa2cDw",
      "last_http_checked_at": null
    },
    {
      "id": "source:1f4e3448ecbe96e6b06e",
      "url": "https://www.yahoo.com/news/fact-check-antarctic-ufo-images-171446863.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:1f7a09109f646fc7e07b",
      "url": "https://www.reddit.com/r/UFOs/comments/1q13w11/this_army_whistleblower_just_alleged_that_a/",
      "last_http_checked_at": null
    },
    {
      "id": "source:1f820c4daee8333edd2c",
      "url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-245_c",
      "last_http_checked_at": null
    },
    {
      "id": "source:1f9bae9576bb013c23e5",
      "url": "https://www.e-rara.ch/bau_1/content/titleinfo/7955225",
      "last_http_checked_at": null
    },
    {
      "id": "source:1fa31e4512f1505fb2db",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-5103",
      "last_http_checked_at": null
    },
    {
      "id": "source:1fd98957ee7cace60834",
      "url": "https://www.youtube.com/watch?v=IQz7innxnms",
      "last_http_checked_at": null
    },
    {
      "id": "source:2136ca31b04b865a63a3",
      "url": "https://books.google.com/books/about/Maps_of_the_Ancient_Sea_Kings.html?id=5iLG2D5eBswC",
      "last_http_checked_at": null
    },
    {
      "id": "source:213a517059fcdebe6192",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-956",
      "last_http_checked_at": null
    },
    {
      "id": "source:21cc1c7dca14e64994cb",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11485871/",
      "last_http_checked_at": null
    },
    {
      "id": "source:21ff62698c7d0aa86cd9",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3691",
      "last_http_checked_at": null
    },
    {
      "id": "source:22a5da5304dec9dc264d",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4021",
      "last_http_checked_at": null
    },
    {
      "id": "source:235a22303e44122d7218",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-147",
      "last_http_checked_at": null
    },
    {
      "id": "source:23b2862fc57ef9916198",
      "url": "https://satnews.com/2017/01/12/google-earth-images-of-antarctica-stairs-to-where/",
      "last_http_checked_at": null
    },
    {
      "id": "source:24bb01fdcab3c0b9c265",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-76",
      "last_http_checked_at": null
    },
    {
      "id": "source:251e7b4324bc38a75089",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-69",
      "last_http_checked_at": null
    },
    {
      "id": "source:25a95d7374568f64bebc",
      "url": "https://thelivingmoon.com/47brotherthebig/03files/Antarctic_Time_Warp_Discovery.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:26401e8d79a29eae02c6",
      "url": "https://www.loc.gov/item/2011594831/",
      "last_http_checked_at": null
    },
    {
      "id": "source:2790a1ce81590f06f715",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g024",
      "last_http_checked_at": null
    },
    {
      "id": "source:27b6e1cfd6d9fe3700d7",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-65",
      "last_http_checked_at": null
    },
    {
      "id": "source:27f5b9c1fdd36f5228f9",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1159",
      "last_http_checked_at": null
    },
    {
      "id": "source:27fe58e0874ad74e9f45",
      "url": "https://www.youtube.com/watch?v=_vFxGhRq4N4",
      "last_http_checked_at": null
    },
    {
      "id": "source:28921505d7402d8bc6fe",
      "url": "https://www.ibtimes.co.uk/google-earth-mysterious-sea-monster-discovered-be-just-big-pile-rocks-1566711",
      "last_http_checked_at": null
    },
    {
      "id": "source:2911b42537de8ec51ce7",
      "url": "https://leadstories.com/hoax-alert/2024/03/fact-check-ai-conspiracy-video-of-antarctica-opium-bird-is-not-real.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:298fa0a81815b2b02f85",
      "url": "https://williamjohncox.com/assets/pdfs/books/MillennialMath.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:2a0cceb4db3b17e0180d",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1156",
      "last_http_checked_at": null
    },
    {
      "id": "source:2a536868d2c6cdaf0dd9",
      "url": "https://exopolitics.org/visit-to-antarctica-confirms-discovery-of-flash-frozen-alien-civilization/",
      "last_http_checked_at": null
    },
    {
      "id": "source:2add0b35add85a53ae98",
      "url": "https://www.reddit.com/r/UnresolvedMysteries/comments/e0b7ev",
      "last_http_checked_at": null
    },
    {
      "id": "source:2bd845ca6941a6b8d671",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-396",
      "last_http_checked_at": null
    },
    {
      "id": "source:2bfc2f8ac1f553779521",
      "url": "https://www.techtimes.com/articles/251689/20200810/ice-ship-found-near-antarctica-via-google-map-claimed-to-be-a-capsized-boat.htm",
      "last_http_checked_at": null
    },
    {
      "id": "source:2e9acb0ad1116bc64a1f",
      "url": "https://www.usgs.gov/publications/landsat-image-mosaic-antarctica",
      "last_http_checked_at": null
    },
    {
      "id": "source:2eb7acb851770bf2d856",
      "url": "https://briefglo.com/admiral-byrd-antarctica-hollow-earth/",
      "last_http_checked_at": null
    },
    {
      "id": "source:2f087819152d9da9b131",
      "url": "https://pubmed.ncbi.nlm.nih.gov/27698418/",
      "last_http_checked_at": null
    },
    {
      "id": "source:2f25af4df9b8127bd1c2",
      "url": "https://forbiddenknowledgetv.net/post/sensitive/admiral-byrds-diary",
      "last_http_checked_at": null
    },
    {
      "id": "source:303ff3fc723de9429ee5",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212315",
      "last_http_checked_at": null
    },
    {
      "id": "source:30bbba6ac6b664bb6fac",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=106",
      "last_http_checked_at": null
    },
    {
      "id": "source:3544f98c213bfe96c822",
      "url": "https://teyit.org/analiz/antarktikada-donmus-canlilari-gosteren-video-gercek-mi",
      "last_http_checked_at": null
    },
    {
      "id": "source:394f9c8f664bd712e9cd",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3713",
      "last_http_checked_at": null
    },
    {
      "id": "source:3a1917c86d785d33f09a",
      "url": "https://fight.fudgie.org/search/show/dkj/episode/20251018_Sat_3MP_woZaydE",
      "last_http_checked_at": null
    },
    {
      "id": "source:3a7c3356f5a811df51d2",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71134",
      "last_http_checked_at": null
    },
    {
      "id": "source:3b755117b9b7a09d39e0",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3692",
      "last_http_checked_at": null
    },
    {
      "id": "source:3cd55dd626d9d1d97331",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=94",
      "last_http_checked_at": null
    },
    {
      "id": "source:3db6c4b39ec8b832a118",
      "url": "https://www.ufosightingsfootage.uk/2018/06/antarctica-anomalies.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:3e68b60cfde71daea5e4",
      "url": "https://leadstories.com/hoax-alert/2016/01/hoax-alert-nasa-images-did-not-reveal-ancient-human-settlement-under-23-km-of-ice.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:3e893ec5be59797878a6",
      "url": "https://www.reddit.com/r/UFOB/comments/1i6cnhi",
      "last_http_checked_at": null
    },
    {
      "id": "source:40a2853c3045377574f2",
      "url": "https://www.youtube.com/watch?v=sl61HnhDDeA",
      "last_http_checked_at": null
    },
    {
      "id": "source:4162a9f70f27d685c213",
      "url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
      "last_http_checked_at": null
    },
    {
      "id": "source:41e8048f346ab8f6f96c",
      "url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
      "last_http_checked_at": null
    },
    {
      "id": "source:42187362b141b2915b22",
      "url": "https://www.loc.gov/resource/gdcwdl.wdl_17585/",
      "last_http_checked_at": null
    },
    {
      "id": "source:430febe19a41e81e1b94",
      "url": "https://www.tandfonline.com/doi/abs/10.2747/0272-3646.25.5.382",
      "last_http_checked_at": null
    },
    {
      "id": "source:4490eb2b0e6ab7b903a0",
      "url": "https://www.loc.gov/exhibits/world/heavens.html#obj78",
      "last_http_checked_at": null
    },
    {
      "id": "source:44aa9a7c60448b10e2b6",
      "url": "https://lostbooks.medium.com/ai-generated-pyramids-in-antarctica-stir-fresh-debate-on-misinformation-in-tech-bfb0f65c1e8f",
      "last_http_checked_at": null
    },
    {
      "id": "source:46a875a8526244ab1447",
      "url": "https://aso.gov.au/titles/documentaries/mawson-life-and-death/notes/",
      "last_http_checked_at": null
    },
    {
      "id": "source:46c1dbef1b0d8ed133a9",
      "url": "https://exopolitics.org/china-gives-dark-fleet-antarctica-bases-to-earth-alliance-to-build-space-fleets/",
      "last_http_checked_at": null
    },
    {
      "id": "source:46c966f2b70675b3f1f5",
      "url": "https://exopolitics.org/new-webinar-antarctica-the-dark-fleet-humanitys-liberation/",
      "last_http_checked_at": null
    },
    {
      "id": "source:4853b34fb338e946db9b",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=86",
      "last_http_checked_at": null
    },
    {
      "id": "source:488a20335dc62c22185b",
      "url": "https://www.rmg.co.uk/collections/archive/rmgc-object-384033",
      "last_http_checked_at": null
    },
    {
      "id": "source:48cc216ded8bd1310460",
      "url": "https://michaelsalla.com/2017/10/13/illegal-military-research-and-development-in-antarctica/?amp=1",
      "last_http_checked_at": null
    },
    {
      "id": "source:493efd05f809a04bc33c",
      "url": "https://prod-ss.aap.com.au/factcheck/conspiracy-about-buzz-aldrin-discovering-evil-in-antarctica-resurfaces-online/",
      "last_http_checked_at": null
    },
    {
      "id": "source:4a8263446a447ff899a9",
      "url": "https://www.loc.gov/exhibits/world/earth.html#obj105",
      "last_http_checked_at": null
    },
    {
      "id": "source:4cf3a77e662e9182ee1d",
      "url": "https://www.skrause.org/writing/papers/hapgood_and_ecd.shtml",
      "last_http_checked_at": null
    },
    {
      "id": "source:4ed05b3da261dbdbe4b7",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-g051",
      "last_http_checked_at": null
    },
    {
      "id": "source:4edf82a8ba07a45d79b1",
      "url": "https://searcharchives.bl.uk/catalog/040-001958854",
      "last_http_checked_at": null
    },
    {
      "id": "source:503e01d573d47a209dc9",
      "url": "https://www.davidrumsey.com/luna/servlet/view/all/when/1587/",
      "last_http_checked_at": null
    },
    {
      "id": "source:51d0996d4b3dd8abd3f3",
      "url": "https://www.loc.gov/exhibits/world/heavens.html#obj71.1",
      "last_http_checked_at": null
    },
    {
      "id": "source:5300c94e31cc29fa27e7",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3697",
      "last_http_checked_at": null
    },
    {
      "id": "source:53101fb56cd44b19e400",
      "url": "https://www.poynter.org/tfcn/2023/sinister-or-simple-checking-out-antarctica-conspiracy-theories/",
      "last_http_checked_at": null
    },
    {
      "id": "source:5387790fa58d2c97b4d5",
      "url": "https://www.bas.ac.uk/news/ancient-river-landscapes-discovered-beneath-east-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:541bc938458ae852a543",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3967",
      "last_http_checked_at": null
    },
    {
      "id": "source:54be55856de36c2c6f81",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=80",
      "last_http_checked_at": null
    },
    {
      "id": "source:552a9f73c20a2faa609f",
      "url": "https://www.reddit.com/r/conspiracy/comments/10iays2",
      "last_http_checked_at": null
    },
    {
      "id": "source:5565b51093d125b8b942",
      "url": "https://www.gaia.com/video/antarctica-weather-wars-mind-control",
      "last_http_checked_at": null
    },
    {
      "id": "source:55e2d53af743165da7da",
      "url": "https://cool.culturalheritage.org/byform/mailing-lists/cdl/1998/1292.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:55f9db38eafaf058730d",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3989",
      "last_http_checked_at": null
    },
    {
      "id": "source:560eed8d41b153d66ddb",
      "url": "https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1986/10/22165322/p34.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:56b6b26c5b26c64738fa",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3980",
      "last_http_checked_at": null
    },
    {
      "id": "source:5811e734961044d1a6cf",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-399",
      "last_http_checked_at": null
    },
    {
      "id": "source:5938847f2bfee1b2bee2",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4007",
      "last_http_checked_at": null
    },
    {
      "id": "source:59588e0534b2e2dd8fa7",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3682",
      "last_http_checked_at": null
    },
    {
      "id": "source:5ae945b8d9d811720113",
      "url": "https://australianhumanitiesreview.org/2011/11/01/dogs-meat-and-douglas-mawson/",
      "last_http_checked_at": null
    },
    {
      "id": "source:5b2506009eb577549254",
      "url": "https://www.coasttocoastam.com/alternate/amp/show/2026-07-17-show/",
      "last_http_checked_at": null
    },
    {
      "id": "source:5bc8f10a0d4999190183",
      "url": "https://jamescairdsociety.com/wp-content/uploads/2021/10/Journal-No.11-3.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:5c2b8f6ba37b25f23099",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3984",
      "last_http_checked_at": null
    },
    {
      "id": "source:5c7c07a881c516093547",
      "url": "https://www.asoc.org/ice-archive/the-antarctic-treaty-what-happens-in-2048/",
      "last_http_checked_at": null
    },
    {
      "id": "source:5c90a79c0f1a14e19933",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f392",
      "last_http_checked_at": null
    },
    {
      "id": "source:5cd1eb3ff4c5df02bfa6",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-669",
      "last_http_checked_at": null
    },
    {
      "id": "source:5f0e7a167449c75a08e7",
      "url": "https://www.inquisitr.com/ufo-theory-new-facts-bring-questions-about-legitimacy-of-antarctica-rumors/",
      "last_http_checked_at": null
    },
    {
      "id": "source:5f152363a2d3d50d37f5",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f640",
      "last_http_checked_at": null
    },
    {
      "id": "source:60105b414fa6733b93c1",
      "url": "https://leadstories.com/hoax-alert/2023/04/fact-check-video-does-not-show-military-enforcement-of-no-fly-zone-over-antarctica.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:60e91dab01900b04fd56",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3684",
      "last_http_checked_at": null
    },
    {
      "id": "source:60f4d10fca887f55cae1",
      "url": "https://www.nicap.org/docs/antarctica/6507_nicap-nyc_trans2.htm",
      "last_http_checked_at": null
    },
    {
      "id": "source:61146f3dd303e1a77d41",
      "url": "https://nerdbot.com/2022/01/31/mysterious-antarctica-cave-resurfaced-google-earth/",
      "last_http_checked_at": null
    },
    {
      "id": "source:6126350d9055e7b17ae4",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-7207",
      "last_http_checked_at": null
    },
    {
      "id": "source:627534025ccb78ecdaca",
      "url": "https://www.metmuseum.org/art/collection/search/711314",
      "last_http_checked_at": null
    },
    {
      "id": "source:62c0fb3e43b74d6818d0",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=97",
      "last_http_checked_at": null
    },
    {
      "id": "source:63dd277f76ad07e9361d",
      "url": "https://www.icr.org/i/pdf/imp/imp-361.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:63df944bd2ab12c69eda",
      "url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
      "last_http_checked_at": null
    },
    {
      "id": "source:6439650084ac8e130234",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3991",
      "last_http_checked_at": null
    },
    {
      "id": "source:64756f609bdc5391421e",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3701",
      "last_http_checked_at": null
    },
    {
      "id": "source:64b1adb74892ac3631e4",
      "url": "https://youtu.be/vNGG91BJTfQ",
      "last_http_checked_at": null
    },
    {
      "id": "source:6546a4913c7741f8cf2d",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f610",
      "last_http_checked_at": null
    },
    {
      "id": "source:65531c47b015981fcb68",
      "url": "https://www.loc.gov/item/2002624045/",
      "last_http_checked_at": null
    },
    {
      "id": "source:65c702475e65fcf3c905",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3693",
      "last_http_checked_at": null
    },
    {
      "id": "source:66895cb60a0d67b1a96d",
      "url": "https://www.reddit.com/r/conspiracy/comments/1jucvh1",
      "last_http_checked_at": null
    },
    {
      "id": "source:66dc48c4f9faccce2b9f",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-69072",
      "last_http_checked_at": null
    },
    {
      "id": "source:67184390ccd57ddc9f9d",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f417",
      "last_http_checked_at": null
    },
    {
      "id": "source:673f92ec323061a49fc4",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3987",
      "last_http_checked_at": null
    },
    {
      "id": "source:677351e5d067064f3811",
      "url": "https://rumble.com/v1k36ia-bases-46-harald-kautz-vella-part-2.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:67b6060e5da53c73d3eb",
      "url": "https://ghostwatch.com/paranormal-report/haunted-locations/antarctica/scotts-hut-at-cape-evans/",
      "last_http_checked_at": null
    },
    {
      "id": "source:67eb0f775f0e1db662ad",
      "url": "https://www.reddit.com/r/Paranormal/comments/j4bae0",
      "last_http_checked_at": null
    },
    {
      "id": "source:6a4bd65e7c46302c89f9",
      "url": "https://www.sciencealert.com/Of-course-NASA-did-not-detect-a-parallel-universe-in-Antarctica",
      "last_http_checked_at": null
    },
    {
      "id": "source:6b2d2542b3e2b1cb1b98",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3969",
      "last_http_checked_at": null
    },
    {
      "id": "source:6b320137278a1de8f7b5",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-243",
      "last_http_checked_at": null
    },
    {
      "id": "source:6bbfdbb52ec3694d607b",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4001",
      "last_http_checked_at": null
    },
    {
      "id": "source:6bf9c2369a20c417a588",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1403",
      "last_http_checked_at": null
    },
    {
      "id": "source:6c9bb4f28b8058be9627",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3703",
      "last_http_checked_at": null
    },
    {
      "id": "source:6d2673e85fcdedbfcad5",
      "url": "https://www.loc.gov/item/2011594788/",
      "last_http_checked_at": null
    },
    {
      "id": "source:6e14f96ac246f27362df",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3687",
      "last_http_checked_at": null
    },
    {
      "id": "source:6f1034f95f2c30f364d6",
      "url": "https://blogs.loc.gov/maps/2025/06/tracking-tartary-on-western-maps/",
      "last_http_checked_at": null
    },
    {
      "id": "source:6f2cf5af851855446995",
      "url": "https://www.lib.umn.edu/collections/special/bell/ricci",
      "last_http_checked_at": null
    },
    {
      "id": "source:6fbcd18b0c72306768bc",
      "url": "https://archive.org/details/gov.archives.arc.95934",
      "last_http_checked_at": null
    },
    {
      "id": "source:7035140e74969268cbfc",
      "url": "https://www.reddit.com/r/conspiracy/comments/i4qjr3",
      "last_http_checked_at": null
    },
    {
      "id": "source:703d95835a5daabf916c",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11485678/",
      "last_http_checked_at": null
    },
    {
      "id": "source:70feb222582de339fff6",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-15",
      "last_http_checked_at": null
    },
    {
      "id": "source:71f799c3796b21da7f29",
      "url": "https://www.cai.cam.ac.uk/discover/library/online-exhibitions/safe-return-doubtful/terra-australis",
      "last_http_checked_at": null
    },
    {
      "id": "source:72c44114a265a9f29e7c",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3716",
      "last_http_checked_at": null
    },
    {
      "id": "source:73355142abf7c47319bc",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=1086",
      "last_http_checked_at": null
    },
    {
      "id": "source:73f0b450d5747cb5c9d2",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-839",
      "last_http_checked_at": null
    },
    {
      "id": "source:73f418060a0c39469013",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-753r10-22",
      "last_http_checked_at": null
    },
    {
      "id": "source:741d1a30b557936ea05e",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-7194",
      "last_http_checked_at": null
    },
    {
      "id": "source:74351ff78458d4dd5a54",
      "url": "https://www.si.edu/object/silgoi_68483",
      "last_http_checked_at": null
    },
    {
      "id": "source:7863c58b113541d0d8ab",
      "url": "https://digitalexhibits.library.washu.edu/s/terra-incognita/item/18981",
      "last_http_checked_at": null
    },
    {
      "id": "source:79038df8b2f52e6b23cd",
      "url": "https://mark4sun.jpl.nasa.gov/mcm86.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:797b6f807b799ab8cb53",
      "url": "https://www.loc.gov/exhibits/world/earth.html#obj113",
      "last_http_checked_at": null
    },
    {
      "id": "source:7a7291af4602b8afb814",
      "url": "https://www.shimajournal.plate.media/issues/v14n1/10.-Greenland-and-Hayward-Shima-v14n1.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:7a895af0c3848c4effca",
      "url": "https://creationwiki.org/Antarctica",
      "last_http_checked_at": null
    },
    {
      "id": "source:7a977bb7c647b3b8b683",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f440",
      "last_http_checked_at": null
    },
    {
      "id": "source:7bc7f7658d421ea44771",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14161",
      "last_http_checked_at": null
    },
    {
      "id": "source:7c8cc9ab8e090222c447",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4020",
      "last_http_checked_at": null
    },
    {
      "id": "source:7c8f2e49beb544a6e133",
      "url": "https://www.livescience.com/planet-earth/antarctica/wilkes-land-crater-the-giant-hole-in-east-antarcticas-gravitational-field-likely-caused-by-a-meteorite",
      "last_http_checked_at": null
    },
    {
      "id": "source:7ca77d19e448841462de",
      "url": "https://www.loc.gov/exhibits/world/earth.html#obj104",
      "last_http_checked_at": null
    },
    {
      "id": "source:7d5ac46471233ef10f5d",
      "url": "https://www.youtube.com/watch?v=-M4r1lpqQn8",
      "last_http_checked_at": null
    },
    {
      "id": "source:7dff45f0ae4d907b4b79",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3972",
      "last_http_checked_at": null
    },
    {
      "id": "source:7e7e9e63b579cf30473b",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-421",
      "last_http_checked_at": null
    },
    {
      "id": "source:7ea10c0d06dfe3f9d174",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-369",
      "last_http_checked_at": null
    },
    {
      "id": "source:7efe70b9de7d4d1cfe71",
      "url": "https://leadstories.com/hoax-alert/2023/04/fact-check-there-is-no-dimensional-gateway-to-antarctica-these-photos-were-edited.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:7fd47764041af0907955",
      "url": "https://pod.wave.co/podcast/that-ufo-podcast/what-is-hidden-beneath-antarctica-ufos-secret-bases-and-hollow-earth-with-brad-olsen",
      "last_http_checked_at": null
    },
    {
      "id": "source:80147c1f66e78752ea72",
      "url": "https://www.ibtimes.co.uk/google-earth-user-spots-frozen-ship-surface-icy-antarctica-terrain-1681811",
      "last_http_checked_at": null
    },
    {
      "id": "source:8027630d4d2c85c4130c",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71132",
      "last_http_checked_at": null
    },
    {
      "id": "source:81bdf44cc6cdda22cb9a",
      "url": "https://politifact.com/factchecks/2024/apr/16/facebook-posts/erroneous-forecast-of-85-foot-waves-was-caused-by/",
      "last_http_checked_at": null
    },
    {
      "id": "source:8338b617a35f295dded8",
      "url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
      "last_http_checked_at": null
    },
    {
      "id": "source:83465317ef45e4928ef4",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3982",
      "last_http_checked_at": null
    },
    {
      "id": "source:83fe5f1466901fa475eb",
      "url": "https://en.wikipedia.org/wiki/Nimrod_Islands",
      "last_http_checked_at": null
    },
    {
      "id": "source:845a3a235a5d4cc827c2",
      "url": "https://science.feedback.org/review/how-we-know-earth-is-round-not-flat-a-review-of-claims-and-misconceptions-about-earths-shape/",
      "last_http_checked_at": null
    },
    {
      "id": "source:845a3f1a3be93fca8ad5",
      "url": "https://catalogue.bnf.fr/ark:/12148/cb40592237k",
      "last_http_checked_at": null
    },
    {
      "id": "source:845b2aceb4bb63646177",
      "url": "https://www.yahoo.com/news/fact-check-no-truth-claims-210356847.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:84a88b54fdd9ce6da0be",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-471",
      "last_http_checked_at": null
    },
    {
      "id": "source:84c8b079f3224b157469",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4008",
      "last_http_checked_at": null
    },
    {
      "id": "source:84d773ff8c28d955e1f1",
      "url": "https://www.whoi.edu/press-room/news-release/six-million-year-old-ice-discovered-in-antarctica-offers-unprecedented-window-into-a-warmer-earth/",
      "last_http_checked_at": null
    },
    {
      "id": "source:84f4fa4063a6bf384622",
      "url": "https://archive.aramcoworld.com/issue/198001/piri.reis.and.the.hapgood.hypotheses.htm",
      "last_http_checked_at": null
    },
    {
      "id": "source:85466747bd9dcd6e6c23",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=103",
      "last_http_checked_at": null
    },
    {
      "id": "source:85940182831d1f6416a7",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3686",
      "last_http_checked_at": null
    },
    {
      "id": "source:86017d8322cac3e6b76f",
      "url": "https://leadstories.com/hoax-alert/2023/11/fact-check-rothschild-family-did-not-buy-does-not-own-antarcticas-rothschild-island.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:86898baadcfa1ea1c3ea",
      "url": "https://stirileprotv.ro/bizar/obiect-ciudat-filmat-deasupra-unei-statii-de-cercetare-din-antarctica-ozn-sau-planeta-nibiru.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:87305b1c474fef3e1997",
      "url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-70",
      "last_http_checked_at": null
    },
    {
      "id": "source:874cb58bbe69aa893761",
      "url": "https://www.nasa.gov/image-article/two-rectangular-icebergs-spotted-nasa-icebridge-flight/",
      "last_http_checked_at": null
    },
    {
      "id": "source:877db2ee3bebdcb6e9af",
      "url": "https://nssdc.gsfc.nasa.gov/imgcat/html/object_page/a17_h_148_22727.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:88618270e1c5db7d04a9",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-levick-collection/p48-14-130",
      "last_http_checked_at": null
    },
    {
      "id": "source:88db6ed0277441aac356",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212309",
      "last_http_checked_at": null
    },
    {
      "id": "source:88f90c097476475af121",
      "url": "https://www.reddit.com/r/conspiracy/comments/1bjxevc",
      "last_http_checked_at": null
    },
    {
      "id": "source:8920d997dee49cb1aacf",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4011",
      "last_http_checked_at": null
    },
    {
      "id": "source:89d1400b3f0bc471b04d",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3718",
      "last_http_checked_at": null
    },
    {
      "id": "source:89d88c85e4ed562bed69",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-43676",
      "last_http_checked_at": null
    },
    {
      "id": "source:89e6f663ce9efce246d6",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3970",
      "last_http_checked_at": null
    },
    {
      "id": "source:8b6373ec7b3989f025a0",
      "url": "https://exopolitics.org/navy-seal-reveals-secret-mission-to-ancient-buried-structure-in-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:8c4f29db884f6a0b427e",
      "url": "https://www.youtube.com/watch?v=wDcUUTwy6pA",
      "last_http_checked_at": null
    },
    {
      "id": "source:8c70a2f1d82f5fc46a36",
      "url": "https://www.scottishmaritimemuseum.org/collections/its-snowing-again-diaries-from-edwardian-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:8d256621cacbc8c809d1",
      "url": "https://nsarchive.gwu.edu/briefing-book/nuclear-vault/2016-12-06/vela-incident-south-atlantic-mystery-flash-september-1979-raised-questions-about-nuclear-test",
      "last_http_checked_at": null
    },
    {
      "id": "source:8dfd386a6a88f3d086f0",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4015",
      "last_http_checked_at": null
    },
    {
      "id": "source:8f093bf67bd6407eb394",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-199",
      "last_http_checked_at": null
    },
    {
      "id": "source:8f4a0aabf87c96d4b7c1",
      "url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-27",
      "last_http_checked_at": null
    },
    {
      "id": "source:8f8d0aff09aeef449365",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3695",
      "last_http_checked_at": null
    },
    {
      "id": "source:9013bad24981930a1b88",
      "url": "https://images.nasa.gov/details/PIA20664",
      "last_http_checked_at": null
    },
    {
      "id": "source:908b6ad153d1ec85d52c",
      "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
      "last_http_checked_at": null
    },
    {
      "id": "source:9099c80440efddcfe536",
      "url": "https://researchcommons.waikato.ac.nz/bitstreams/ba6a28ec-e437-4ace-92b2-b4445a72f451/download",
      "last_http_checked_at": null
    },
    {
      "id": "source:909ca6a856347ee75c2c",
      "url": "https://tomcreandiscovery.com/category/race-to-the-pole/",
      "last_http_checked_at": null
    },
    {
      "id": "source:9272c024e87f7f5ae355",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1136",
      "last_http_checked_at": null
    },
    {
      "id": "source:931822f002b45eae5fbd",
      "url": "https://factcheck.afp.com/doc.afp.com.32DH7HC",
      "last_http_checked_at": null
    },
    {
      "id": "source:9382547398e773607def",
      "url": "https://dailycaller.com/2022/04/21/fact-check-ufo-antarctica-video-recon-mission/",
      "last_http_checked_at": null
    },
    {
      "id": "source:93ad731e7e3f39c785a1",
      "url": "https://www.mentalfloss.com/crime/mysterious-death-rodney-marks-scientist-who-was-poisoned-antarctica",
      "last_http_checked_at": null
    },
    {
      "id": "source:93f1ef79ef2222d3483d",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3694",
      "last_http_checked_at": null
    },
    {
      "id": "source:93f73d6b60923290f8c5",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r012",
      "last_http_checked_at": null
    },
    {
      "id": "source:9430331f1138e5c3789e",
      "url": "https://fullfact.org/online/not-illegal-to-fly-over-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:95b0245666fcc9424605",
      "url": "https://www.cambridge.org/core/journals/polar-record/article/why-didnt-they-ask-evans/224A49CABBF71E72B99C8C9C3B7236A4",
      "last_http_checked_at": null
    },
    {
      "id": "source:961520daacb0bfb392e0",
      "url": "https://teyit.org/analiz/goruntuler-antarktikada-gunesin-gok-kubbeden-yansimasini-mi-gosteriyor",
      "last_http_checked_at": null
    },
    {
      "id": "source:96178a932399675849a4",
      "url": "https://archaeologyworlds.com/600-million-year-ago-fossils-of-tiny-humanoids-found-in-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:96d2f56ef49644775d8e",
      "url": "https://fight.fudgie.org/search/show/pc/episode/20230628_Wed_v2uazqh",
      "last_http_checked_at": null
    },
    {
      "id": "source:972b9ea2fbe3a048d43c",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3975",
      "last_http_checked_at": null
    },
    {
      "id": "source:97bcc467db8c5970ddb2",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=90",
      "last_http_checked_at": null
    },
    {
      "id": "source:97c8350b91fd55db6c8a",
      "url": "https://tech.yahoo.com/science/articles/fact-check-no-600-million-140000950.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:9920bdd5a826b3c4ea11",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3711",
      "last_http_checked_at": null
    },
    {
      "id": "source:992a90b8d0f5644b359a",
      "url": "https://www.loc.gov/exhibits/world/heavens.html#obj74",
      "last_http_checked_at": null
    },
    {
      "id": "source:9951e91bc22ddced3208",
      "url": "https://svs.gsfc.nasa.gov/11274/",
      "last_http_checked_at": null
    },
    {
      "id": "source:99a00768575799de19d8",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-450",
      "last_http_checked_at": null
    },
    {
      "id": "source:9a109068d0e1e0456966",
      "url": "https://borderlandsciences.org/journal/vol/19/n01/Crabb_on_Bender_Three_Men_III.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:9a3798e7aa1a58299244",
      "url": "https://www.gaia.com/video/recovered-memories-reveal-super-soldier-program",
      "last_http_checked_at": null
    },
    {
      "id": "source:9b015e37701aea35b274",
      "url": "https://www.spreaker.com/episode/phenomenon-special-guest-brian-s--53852657",
      "last_http_checked_at": null
    },
    {
      "id": "source:9b54ff314cab082edcbe",
      "url": "https://interactives.stuff.co.nz/2022/01/the-berserk-incident/",
      "last_http_checked_at": null
    },
    {
      "id": "source:9bf3d50bdb209ec7ad84",
      "url": "https://old-digitalcollections.nypl.org/items/c5326a5c-cd31-6b8c-e040-e00a18063384",
      "last_http_checked_at": null
    },
    {
      "id": "source:9c6cd2c83627a4a95a3b",
      "url": "https://leadstories.com/hoax-alert/2021/12/fact-check-cabal-leaders-did-not-go-to-antarctica-to-surrender-to-extraterrestrials.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:9cc07d8d922a6d082e57",
      "url": "https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/bender-albert-k",
      "last_http_checked_at": null
    },
    {
      "id": "source:9ce7dfe67d257ed9f52e",
      "url": "https://www.youtube.com/watch?v=7zLESAsAmZY",
      "last_http_checked_at": null
    },
    {
      "id": "source:9fb41948b51a9c9e96f7",
      "url": "https://leadstories.com/hoax-alert/2022/04/fact-check-marines-are-not-investigating-three-ancient-pyramids-in-antarctica.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:a0509ea5e000805ee455",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f435",
      "last_http_checked_at": null
    },
    {
      "id": "source:a054bab9ddcbc14e53fa",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3973",
      "last_http_checked_at": null
    },
    {
      "id": "source:a0861f2fc37e8a67df9c",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3714",
      "last_http_checked_at": null
    },
    {
      "id": "source:a0b26288a14f1b2b3b25",
      "url": "https://www.history.com/articles/hitler-nazi-secret-expedition-antarctica-whale-oil",
      "last_http_checked_at": null
    },
    {
      "id": "source:a0b3fdfc89e927ab588d",
      "url": "https://www.badarchaeology.com/old-maps/the-piri-reis-map/",
      "last_http_checked_at": null
    },
    {
      "id": "source:a0fd5e94ed18f6711dcf",
      "url": "https://www.reddit.com/r/AstralProjection/comments/e996yo/antarctica_seems_impenetrable/",
      "last_http_checked_at": null
    },
    {
      "id": "source:a1013c83f7edec74ba5d",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-h196",
      "last_http_checked_at": null
    },
    {
      "id": "source:a3c24d0b7025de8b248b",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=1335",
      "last_http_checked_at": null
    },
    {
      "id": "source:a4e3f987fb38d986c4da",
      "url": "https://www.pmel.noaa.gov/acoustics/sounds/bloop.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:a514e33b1e7948e2ca97",
      "url": "https://www.youtube.com/watch?v=66SP6IGBn9Y",
      "last_http_checked_at": null
    },
    {
      "id": "source:a51a8ba8e22889c939e7",
      "url": "https://www.loc.gov/item/2021666800/",
      "last_http_checked_at": null
    },
    {
      "id": "source:a5d12e2c333c23c126f1",
      "url": "https://www.bas.ac.uk/news/new-map-of-landscape-beneath-antarctica-unveiled/",
      "last_http_checked_at": null
    },
    {
      "id": "source:a649393e0a0b87ca79f7",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b051",
      "last_http_checked_at": null
    },
    {
      "id": "source:a7769b66acbcc97db493",
      "url": "https://www.esa.int/Applications/Observing_the_Earth/FutureEO/CryoSat/85_new_subglacial_lakes_detected_below_Antarctica",
      "last_http_checked_at": null
    },
    {
      "id": "source:a7b536f51d7a4d241c61",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-991",
      "last_http_checked_at": null
    },
    {
      "id": "source:a8113c4f4b4116a95967",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3700",
      "last_http_checked_at": null
    },
    {
      "id": "source:a825a13de99b889c3094",
      "url": "https://www.sciencealert.com/google-earth-ufo-crash-totally-normal-avalanche",
      "last_http_checked_at": null
    },
    {
      "id": "source:a8f00b4a7a4e6e1b65bf",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-125",
      "last_http_checked_at": null
    },
    {
      "id": "source:a927a3e32364a7729d15",
      "url": "https://www.youtube.com/watch?v=TVHe9ovnWJI",
      "last_http_checked_at": null
    },
    {
      "id": "source:a94f7a7574bcae796e0a",
      "url": "https://www.cambridge.org/core/journals/polar-record/article/in-search-of-the-origin-of-an-antarctic-ghost-ship-the-legend-of-the-jenny-reevaluated/2D88EE4809DBEB54676E3904A48C3A78",
      "last_http_checked_at": null
    },
    {
      "id": "source:a952297f0c0f5120e267",
      "url": "https://www.loc.gov/item/2010589747/",
      "last_http_checked_at": null
    },
    {
      "id": "source:a97504227b08e838829f",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3720",
      "last_http_checked_at": null
    },
    {
      "id": "source:a9816ec3afd0164ccc85",
      "url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-354_b",
      "last_http_checked_at": null
    },
    {
      "id": "source:a9b9cb03676ee505eefd",
      "url": "https://prod-ss.aap.com.au/factcheck/scientists-pour-cold-water-on-volcanic-glacier-melting-claims/",
      "last_http_checked_at": null
    },
    {
      "id": "source:aa2a56397005e85094f0",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-223",
      "last_http_checked_at": null
    },
    {
      "id": "source:aa5f539ae779f009285d",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=81",
      "last_http_checked_at": null
    },
    {
      "id": "source:aa796507c529bcf09c1a",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-798",
      "last_http_checked_at": null
    },
    {
      "id": "source:aaa3c9beb8bfec98ebe4",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-41",
      "last_http_checked_at": null
    },
    {
      "id": "source:aaa9a7cc016b51489887",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3702",
      "last_http_checked_at": null
    },
    {
      "id": "source:aabed8a91a0975e81113",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-643",
      "last_http_checked_at": null
    },
    {
      "id": "source:abbc5a5e7993def2b64c",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=79",
      "last_http_checked_at": null
    },
    {
      "id": "source:ac1a814bdca16a0313c8",
      "url": "https://expo.bib.kuleuven.be/exhibits/show/expedition-antarctique-en/expedition-antarctique-en",
      "last_http_checked_at": null
    },
    {
      "id": "source:ac67026bdec2f3d8fc87",
      "url": "https://www.unesco.org/en/memory-world/piri-reis-world-map-1513",
      "last_http_checked_at": null
    },
    {
      "id": "source:acad184adbcb8086ce5b",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-15",
      "last_http_checked_at": null
    },
    {
      "id": "source:ade182ef4ac158cfc2de",
      "url": "https://richarddolanmembers.com/articles/important-uso-case-that-never-happened/",
      "last_http_checked_at": null
    },
    {
      "id": "source:aed6ed3526144b8745b5",
      "url": "https://www.dhtcollections.com/item/Brand_LetterfromSirClementsMarkhaminstructingColbeck_458_0_25394_1.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:af448da5e60c417e7476",
      "url": "https://www.youtube.com/watch?v=SJ1g0dxPBgA",
      "last_http_checked_at": null
    },
    {
      "id": "source:afa6c1e106dc9bb7f0ec",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212313",
      "last_http_checked_at": null
    },
    {
      "id": "source:afb8fc99e3ce3c611e18",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1151",
      "last_http_checked_at": null
    },
    {
      "id": "source:b049f482ac81353bfd47",
      "url": "https://www.reddit.com/r/conspiracy/comments/cx2jrk",
      "last_http_checked_at": null
    },
    {
      "id": "source:b08e30c39540891e9c10",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-232",
      "last_http_checked_at": null
    },
    {
      "id": "source:b0a257b53d308eade6f1",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3719",
      "last_http_checked_at": null
    },
    {
      "id": "source:b1a55f5381f40ac9c3ee",
      "url": "https://www.youtube.com/watch?v=aFv4Ozt_ra4",
      "last_http_checked_at": null
    },
    {
      "id": "source:b28eb9494643661365dc",
      "url": "https://www.themorgan.org/collection/commentary-apocalypse/112348/20",
      "last_http_checked_at": null
    },
    {
      "id": "source:b28fbaeeaadec817efa7",
      "url": "https://books.google.com/books/about/Out_of_Antarctica.html?id=rzgcPwAACAAJ",
      "last_http_checked_at": null
    },
    {
      "id": "source:b2acfabce808aa8be402",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=101",
      "last_http_checked_at": null
    },
    {
      "id": "source:b2d220266dd196b9f4ba",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-489",
      "last_http_checked_at": null
    },
    {
      "id": "source:b323e98886224cc0ec00",
      "url": "https://science.gsfc.nasa.gov/earth/cryosphere/projects/99/",
      "last_http_checked_at": null
    },
    {
      "id": "source:b3537661266f4fabe03a",
      "url": "https://politifact.com/factchecks/2022/apr/27/blog-posting/no-marines-arent-investigating-antarctica-pyramids/",
      "last_http_checked_at": null
    },
    {
      "id": "source:b43a13bf18ca7ff08c3e",
      "url": "https://factchequeado.com/verificaciones/20260529/cientificos-descubierto-piramides-orbes-calientes-antartida/",
      "last_http_checked_at": null
    },
    {
      "id": "source:b50b0c8a27145d8a477a",
      "url": "https://exopolitics.org/navy-insiders-corroborate-secret-antarctic-space-fleet-mission-to-oumuamua/",
      "last_http_checked_at": null
    },
    {
      "id": "source:b6a5df5285b03d9dcea3",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2995",
      "last_http_checked_at": null
    },
    {
      "id": "source:b7716c4129361c8647c5",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=107",
      "last_http_checked_at": null
    },
    {
      "id": "source:b7d06ab32e05d76e4e9a",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-83",
      "last_http_checked_at": null
    },
    {
      "id": "source:b909041749c3c10ba45b",
      "url": "https://field.biodiversitylibrary.org/item/18691",
      "last_http_checked_at": null
    },
    {
      "id": "source:b920a8a5207dfbaad9dd",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-4",
      "last_http_checked_at": null
    },
    {
      "id": "source:b9b3a9943b7a57246256",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-235",
      "last_http_checked_at": null
    },
    {
      "id": "source:ba140cc4396034fcee69",
      "url": "https://www.bibliotecapleyades.net/hercolobus/esp_hercolobus_75.htm",
      "last_http_checked_at": null
    },
    {
      "id": "source:ba2b713db0591a23351b",
      "url": "https://oceanservice.noaa.gov/facts/bloop.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:bb75fe09f07f383483e0",
      "url": "https://www.lsce.ipsl.fr/en/the-aicc2023-chronological-framework-and-associated-timescale-for-the-epica-dome-c-ice-core/",
      "last_http_checked_at": null
    },
    {
      "id": "source:bc44d3a805855b288336",
      "url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-306",
      "last_http_checked_at": null
    },
    {
      "id": "source:bc59d521ace1217982f9",
      "url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:bc5c6d14414b419499dd",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=108",
      "last_http_checked_at": null
    },
    {
      "id": "source:bca640e8657c0d723300",
      "url": "https://www.loc.gov/item/2021668666/",
      "last_http_checked_at": null
    },
    {
      "id": "source:bcadbdd9391f0790e159",
      "url": "https://static-prod.lib.princeton.edu/visual_materials/maps/websites/pacific/pacific-ocean/terra-australis.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:bcc4d437059e68e5454b",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-51",
      "last_http_checked_at": null
    },
    {
      "id": "source:be3bdbcc7fe01f42d8ac",
      "url": "https://www.youtube.com/watch?v=U2TrLXEPq1w",
      "last_http_checked_at": null
    },
    {
      "id": "source:bf0235ccbae3d38d3af2",
      "url": "https://prod-ss.aap.com.au/factcheck/no-video-doesnt-show-giant-wave-generator-in-the-antarctic/",
      "last_http_checked_at": null
    },
    {
      "id": "source:bfb65d2dbcc7b890615b",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3699",
      "last_http_checked_at": null
    },
    {
      "id": "source:bfd7ebe44c285d6d43ad",
      "url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
      "last_http_checked_at": null
    },
    {
      "id": "source:bfeae9375f9e85b6363d",
      "url": "https://leadstories.com/hoax-alert/2023/01/fact-check-no-massive-structures-or-lost-city-below-antarctica.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:bfedf29beddf3b7170e2",
      "url": "https://www.nature.com/news/2007/070326/full/news070326-14.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:c01c4280e6cdc644256c",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212316",
      "last_http_checked_at": null
    },
    {
      "id": "source:c091098f3d3486484662",
      "url": "https://www.bibliotecapleyades.net/antarctica/antartica119.htm",
      "last_http_checked_at": null
    },
    {
      "id": "source:c0fe5c3243093cdc29a9",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-872",
      "last_http_checked_at": null
    },
    {
      "id": "source:c2345e1553edfe1a8fdc",
      "url": "https://www.ashtarcommandcrew.net/forum/topics/the-12-pyramids-of-thoth",
      "last_http_checked_at": null
    },
    {
      "id": "source:c23824a8dd2fd8497b81",
      "url": "https://www.bas.ac.uk/about/history/operation-tabarin/",
      "last_http_checked_at": null
    },
    {
      "id": "source:c2b24de252552701904a",
      "url": "https://en.wikipedia.org/wiki/Eltanin_Antenna",
      "last_http_checked_at": null
    },
    {
      "id": "source:c38e1045608e923efa69",
      "url": "https://www.loc.gov/item/2013585077/",
      "last_http_checked_at": null
    },
    {
      "id": "source:c392382d1e16285fe57f",
      "url": "https://politifact.com/factchecks/2022/jul/26/instagram-posts/fact-checking-hollow-earth-conspiracy-theory/",
      "last_http_checked_at": null
    },
    {
      "id": "source:c40b55142726b85d763d",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212310",
      "last_http_checked_at": null
    },
    {
      "id": "source:c4f8a47fd9b567e771eb",
      "url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
      "last_http_checked_at": null
    },
    {
      "id": "source:c6d88c365cfdd4846932",
      "url": "https://borderlandsciences.org/journal/vol/30/n05/Hefferlin_into_Rainbow_City.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:c8208b145d0df487462e",
      "url": "https://www.reddit.com/r/conspiracy/comments/12lbflg",
      "last_http_checked_at": null
    },
    {
      "id": "source:c8669c4ae36a34884830",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-48",
      "last_http_checked_at": null
    },
    {
      "id": "source:c86fea83ebd1dec28a9b",
      "url": "https://timefordisclosure.com/antarcticas-alien-black-goo-e-t-bases-and-secret-societies-new-2021-brad-olsen/",
      "last_http_checked_at": null
    },
    {
      "id": "source:c8a27eeac610321109cd",
      "url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
      "last_http_checked_at": null
    },
    {
      "id": "source:c90ee4c79c04399f468a",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-214",
      "last_http_checked_at": null
    },
    {
      "id": "source:c9590405242621ccb795",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3679",
      "last_http_checked_at": null
    },
    {
      "id": "source:c959b3495ddcc5e1a207",
      "url": "https://thefilmco-op.org/organism-46-b-the-unseen/",
      "last_http_checked_at": null
    },
    {
      "id": "source:c9b0891468ab9a95bb1a",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3995",
      "last_http_checked_at": null
    },
    {
      "id": "source:c9c1e3905ca23c9d1be5",
      "url": "https://www.cambridge.org/core/journals/polar-record/article/abs/death-of-petty-officer-evans/3B2FCA0B33A0FA6AF9F1E7C6D0B965D0",
      "last_http_checked_at": null
    },
    {
      "id": "source:ca2b3553ca9cb2432258",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3974",
      "last_http_checked_at": null
    },
    {
      "id": "source:ca8a1fabb1733ed3e722",
      "url": "https://www.youtube.com/watch?v=U3RkheR9Zbk",
      "last_http_checked_at": null
    },
    {
      "id": "source:cbe8e8622fca770aeb9a",
      "url": "https://www.truthorfiction.com/about-that-perfectly-rectangular-iceberg/",
      "last_http_checked_at": null
    },
    {
      "id": "source:cc2909be6326c0737889",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-161",
      "last_http_checked_at": null
    },
    {
      "id": "source:cc5cb9566f3d19ba197d",
      "url": "https://elib.rgo.ru/handle/123456789/233491",
      "last_http_checked_at": null
    },
    {
      "id": "source:cc9976bf0a10d35ed61d",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1121",
      "last_http_checked_at": null
    },
    {
      "id": "source:cc9f7ffe644fe258ce6c",
      "url": "https://www.dogrulukpayi.com/dogruluk-kontrolu/video-antarktika-da-donmus-halde-bulunan-canlilarin-kesfedildigini-mi-gosteriyor",
      "last_http_checked_at": null
    },
    {
      "id": "source:cd3f71c8e458a7a99030",
      "url": "https://www.reddit.com/r/megalophobia/comments/w6vnlo",
      "last_http_checked_at": null
    },
    {
      "id": "source:cd5cd2106970bb2fc444",
      "url": "https://www.britishmuseum.org/collection/image/471361001",
      "last_http_checked_at": null
    },
    {
      "id": "source:cd74d79fcd2dd562d4a3",
      "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
      "last_http_checked_at": null
    },
    {
      "id": "source:ce2047a31796243265f1",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3977",
      "last_http_checked_at": null
    },
    {
      "id": "source:cf24dbdef3fa635f1909",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3709",
      "last_http_checked_at": null
    },
    {
      "id": "source:d07e4dcb3934ff803ef5",
      "url": "https://discerninghistory.com/2013/05/shackletons-ad-men-wanted-for-hazerdous-journey/",
      "last_http_checked_at": null
    },
    {
      "id": "source:d084bb6141a5fdd988e0",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-7",
      "last_http_checked_at": null
    },
    {
      "id": "source:d105283506a2bbd19611",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-720",
      "last_http_checked_at": null
    },
    {
      "id": "source:d1062659e8b82f318324",
      "url": "https://www.loc.gov/item/2002698490/",
      "last_http_checked_at": null
    },
    {
      "id": "source:d1335e95da6a186d511e",
      "url": "https://www.reddit.com/r/conspiracy/comments/1wwewyz/antarctica_conspiracy_theories_please_share_what/",
      "last_http_checked_at": null
    },
    {
      "id": "source:d1ac6032baa1e224208f",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-383",
      "last_http_checked_at": null
    },
    {
      "id": "source:d220014954ab05a04740",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1046",
      "last_http_checked_at": null
    },
    {
      "id": "source:d22cd08ff780c4849747",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=84",
      "last_http_checked_at": null
    },
    {
      "id": "source:d23f40338b568ac3a35f",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3722",
      "last_http_checked_at": null
    },
    {
      "id": "source:d34920cc459b4d416148",
      "url": "https://www.loc.gov/exhibits/world/heavens.html#obj73",
      "last_http_checked_at": null
    },
    {
      "id": "source:d45b784869ccaeb852c1",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3712",
      "last_http_checked_at": null
    },
    {
      "id": "source:d45fea9d04d17ee076f0",
      "url": "https://faculty.mtsac.edu/cbriggs/Biol-1%20Lab%204%20Osmosis%20and%20Surface%20Area%20FA16.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:d4e0c4eee7892fc51fae",
      "url": "https://www.uapdrop.com/l/view/YPBNSJA5lTg.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:d4eba2305e5b86cdee83",
      "url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
      "last_http_checked_at": null
    },
    {
      "id": "source:d59ed60185145db30a46",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=89",
      "last_http_checked_at": null
    },
    {
      "id": "source:d64ee81eac6287383a9f",
      "url": "https://www.youtube.com/watch?v=jliLRasB48U",
      "last_http_checked_at": null
    },
    {
      "id": "source:d6703466943bf2bfca9b",
      "url": "https://www.nb.no/dokumentarv-i-nasjonalbiblioteket/roald-amundsens-sydpolfilm-i-1911/",
      "last_http_checked_at": null
    },
    {
      "id": "source:d7058ddbe6ee4ee40eeb",
      "url": "https://www.loc.gov/item/2013646124/",
      "last_http_checked_at": null
    },
    {
      "id": "source:d793ffb0f058fc9b531d",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-533",
      "last_http_checked_at": null
    },
    {
      "id": "source:d7f5a550806b6154c36b",
      "url": "https://books.google.com/books/about/The_Ark_of_Gabriel_and_the_Secrets_of_An.html?id=c_MkEQAAQBAJ",
      "last_http_checked_at": null
    },
    {
      "id": "source:d88ca8336000292afe77",
      "url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p2002-28-352",
      "last_http_checked_at": null
    },
    {
      "id": "source:d8aa281a7062f52a57bc",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-847",
      "last_http_checked_at": null
    },
    {
      "id": "source:d992d96502ce4265845e",
      "url": "https://talkorigins.org/faqs/mom/atlantis.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:d9b08df723ef5180e0e5",
      "url": "https://www.ats.aq/e/antarctictreaty.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:db28c308407f32f000df",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3986",
      "last_http_checked_at": null
    },
    {
      "id": "source:dc32af778a11fd5eaf8d",
      "url": "https://science.feedback.org/review/no-evidence-of-giant-stump-in-helicopter-footage-from-antarctica-just-a-normal-rock-outcrop/",
      "last_http_checked_at": null
    },
    {
      "id": "source:dcdf0cd75c1c21632109",
      "url": "https://www.loc.gov/exhibits/world/earth.html#obj104.1",
      "last_http_checked_at": null
    },
    {
      "id": "source:dd9d64a242d7aaa4cbb9",
      "url": "https://www.reddit.com/r/UFOs/comments/148qc9b/eric_hecker_raytheon_contractor_claims_the_south/",
      "last_http_checked_at": null
    },
    {
      "id": "source:ddbb4ac9d16753e0a2dd",
      "url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~275224~90048541:-1--Typus-Orbis-Terrarum-",
      "last_http_checked_at": null
    },
    {
      "id": "source:ded91a7b295bdb685bea",
      "url": "https://searcharchives.bl.uk/catalog/032-002020101",
      "last_http_checked_at": null
    },
    {
      "id": "source:def15b8452990a5b1c38",
      "url": "https://www.reddit.com/r/conspiracytheories/comments/x4q72q",
      "last_http_checked_at": null
    },
    {
      "id": "source:df24cff3e604c98cd7d5",
      "url": "https://blogs.loc.gov/maps/2017/08/new-worlds-to-explore/",
      "last_http_checked_at": null
    },
    {
      "id": "source:df41401e4405fb1393a8",
      "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e000153",
      "last_http_checked_at": null
    },
    {
      "id": "source:df785c71151baf79b540",
      "url": "https://www.nieuwsblad.be/buitenland/nieuwe-theorie-over-vermiste-mh370-mogelijk-het-eerste-vliegtuig-dat-vanop-afstand-werd-gekaapt/59434398.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:dfca3c27785184fc5678",
      "url": "https://exopolitics.org/antarcticas-secret-history-extraterrestrial-colony-created-elite-bloodline-rulers/",
      "last_http_checked_at": null
    },
    {
      "id": "source:e0bad2bfe7e3c6a04db8",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f120",
      "last_http_checked_at": null
    },
    {
      "id": "source:e10820f934f96e5fe6b2",
      "url": "https://artsandculture.google.com/asset/world-map-from-the-book-of-curiosities-of-the-sciences-and-marvels-for-the-eyes-bodleian-library-oxford/UAGcU3E7DbRQnA",
      "last_http_checked_at": null
    },
    {
      "id": "source:e13e8ba078ef8fa978a5",
      "url": "https://www.streetviewfun.com/category/country/antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:e1a2029345d8f644049e",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-110",
      "last_http_checked_at": null
    },
    {
      "id": "source:e3e6ab7292538c0c41c3",
      "url": "https://www.youtube.com/watch?v=in0B1OQG3-M",
      "last_http_checked_at": null
    },
    {
      "id": "source:e4edbe27a55527adf177",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-61",
      "last_http_checked_at": null
    },
    {
      "id": "source:e4f1ed75a8f26a520d8d",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=104",
      "last_http_checked_at": null
    },
    {
      "id": "source:e51e19171aef2756b1a9",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-36372",
      "last_http_checked_at": null
    },
    {
      "id": "source:e59256601759b479e597",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3705",
      "last_http_checked_at": null
    },
    {
      "id": "source:e597ab801cebe6dfd341",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-570",
      "last_http_checked_at": null
    },
    {
      "id": "source:e606754ad09f12432ac9",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b078",
      "last_http_checked_at": null
    },
    {
      "id": "source:e640bce2a69b5916edaa",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3696",
      "last_http_checked_at": null
    },
    {
      "id": "source:e6453886ece2a6357a7c",
      "url": "https://digital.bodleian.ox.ac.uk/objects/ced0d8bd-1019-4af2-9086-e411115f1507/",
      "last_http_checked_at": null
    },
    {
      "id": "source:e6672106d471e432e61c",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=99",
      "last_http_checked_at": null
    },
    {
      "id": "source:e699b8916623d650a4c0",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212312",
      "last_http_checked_at": null
    },
    {
      "id": "source:e6d9cc2227327084f1b7",
      "url": "https://podcasts.apple.com/at/podcast/dark-fleet-headquarters-falls-space-force-mission-in/id1532839037?i=1000795937196",
      "last_http_checked_at": null
    },
    {
      "id": "source:e76a997032275eefd32b",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2673",
      "last_http_checked_at": null
    },
    {
      "id": "source:e782ed6063a13ae83deb",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4022",
      "last_http_checked_at": null
    },
    {
      "id": "source:e7bbf217a71b46d53647",
      "url": "https://ark.digitalcommonwealth.org/ark:/50959/7h149v85z",
      "last_http_checked_at": null
    },
    {
      "id": "source:e822503d8a90c0d43341",
      "url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~364749~90132153:Chart-of-the-South-Polar-Sea-",
      "last_http_checked_at": null
    },
    {
      "id": "source:e880b2641df33198962d",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3968",
      "last_http_checked_at": null
    },
    {
      "id": "source:e930243279bf843145fa",
      "url": "https://www.mja.com.au/journal/2005/183/11/mawson-and-mertz-re-evaluation-their-ill-fated-mapping-journey-during-1911-1914",
      "last_http_checked_at": null
    },
    {
      "id": "source:ea78dcc3d783dfa9abae",
      "url": "https://www.loc.gov/item/2021668613/",
      "last_http_checked_at": null
    },
    {
      "id": "source:ea84a66152b9b6ccffa6",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3926",
      "last_http_checked_at": null
    },
    {
      "id": "source:ea9551e11ad918a304a6",
      "url": "https://www.antarctica.gov.au/antarctic-operations/stations-and-field-locations/heard-island/",
      "last_http_checked_at": null
    },
    {
      "id": "source:eb350432eed6f006d6ec",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r008",
      "last_http_checked_at": null
    },
    {
      "id": "source:eb7fe81be484868ba81a",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-d246",
      "last_http_checked_at": null
    },
    {
      "id": "source:eb8e580fb0538688cd9e",
      "url": "https://science.nasa.gov/earth/earth-observatory/antarctic-sea-ice-8503/",
      "last_http_checked_at": null
    },
    {
      "id": "source:ebfac4a62af804ac30c9",
      "url": "https://www.history.com/articles/top-6-theories-about-atlantis",
      "last_http_checked_at": null
    },
    {
      "id": "source:ee50c713605c21e35b21",
      "url": "https://en.wikipedia.org/wiki/New_South_Greenland",
      "last_http_checked_at": null
    },
    {
      "id": "source:f19193aa742619e83376",
      "url": "https://catalogue.bnf.fr/ark:/12148/cb40641130s",
      "last_http_checked_at": null
    },
    {
      "id": "source:f1e51e6951cb630725ff",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14050",
      "last_http_checked_at": null
    },
    {
      "id": "source:f32dbb435c324e7060f8",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3715",
      "last_http_checked_at": null
    },
    {
      "id": "source:f39a5b188d2f5ecdb127",
      "url": "https://www.managingexpectations.net/blog/articles/antarctic-ice-core-piri-reis-map-history.html",
      "last_http_checked_at": null
    },
    {
      "id": "source:f3c178c5eb7cd5d52eb8",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-595",
      "last_http_checked_at": null
    },
    {
      "id": "source:f43b482c5a36fc9a0df8",
      "url": "https://www.reddit.com/r/CosmicDisclosure/comments/9exnzl/antarctica_base_proof_via_google_earth_strava/",
      "last_http_checked_at": null
    },
    {
      "id": "source:f4ff3c1b13d3e1b20a07",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2668",
      "last_http_checked_at": null
    },
    {
      "id": "source:f603dac892ba614d1b22",
      "url": "https://wikileaks.org/gifiles/attach/49/49783_.pdf",
      "last_http_checked_at": null
    },
    {
      "id": "source:f67cfb1b64f71157cece",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-6260",
      "last_http_checked_at": null
    },
    {
      "id": "source:f7634798cf330f072c9c",
      "url": "https://www.inkl.com/news/are-there-ruins-of-a-lost-civilisation-in-antarctica-no-turns-out-these-images-are-fake",
      "last_http_checked_at": null
    },
    {
      "id": "source:f78ed984f5e3e1794796",
      "url": "https://mycharisma.com/culture/ancient-book-sparks-viral-theory-over-fallen-angels-and-a-hidden-prison-beneath-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:f806ba9095c8181eeddb",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3999",
      "last_http_checked_at": null
    },
    {
      "id": "source:f813dd4a015beb15e8b1",
      "url": "https://thegreatwhitebrotherhood.org/lessons/strange-events-in-antarctica/",
      "last_http_checked_at": null
    },
    {
      "id": "source:f86cb52336d43c860a16",
      "url": "https://www.cam.ac.uk/research/news/last-letter-of-captain-scott-finally-revealed-in-full-101-years-on",
      "last_http_checked_at": null
    },
    {
      "id": "source:f8e8cdbb01f2c31b8f1c",
      "url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-440",
      "last_http_checked_at": null
    },
    {
      "id": "source:fa965fe4f5a5f3b6fdef",
      "url": "https://www.youtube.com/watch?v=hOAwLwRZC7s",
      "last_http_checked_at": null
    },
    {
      "id": "source:fb1dee1beaf822cc6d80",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=92",
      "last_http_checked_at": null
    },
    {
      "id": "source:fc6e99b8085e0556830d",
      "url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f432",
      "last_http_checked_at": null
    },
    {
      "id": "source:fcd8151a467e5901c963",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3983",
      "last_http_checked_at": null
    },
    {
      "id": "source:fe0dfcc16e210a2bed24",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3985",
      "last_http_checked_at": null
    },
    {
      "id": "source:fe945c727f9e091d9da7",
      "url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3979",
      "last_http_checked_at": null
    },
    {
      "id": "source:ff810929a30c931ea8e0",
      "url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=78",
      "last_http_checked_at": null
    }
  ],
  "relations": [
    {
      "id": "relation:04f569318d8377d53116",
      "from_id": "theory:HIST-05",
      "to_id": "history:artifact-feature-highjump-aircraft",
      "predicate": "related_context",
      "why": "The expedition aircraft frame supplies historical operational context, not evidence of combat with an advanced enemy.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:053da7629b25077b6e4a",
      "from_id": "theory:MOD-019",
      "to_id": "theory:THS-008",
      "predicate": "related_context",
      "why": "Both concern how Antarctic governance is represented. Consult the actual Treaty rather than infer a blanket ban or automatic expiry.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:0d9e5ed58e61f801879f",
      "from_id": "theory:THS-011",
      "to_id": "history:artifact-3dfec71cbe98",
      "predicate": "related_context",
      "why": "A historical Tartary regional label does not establish the claimed Antarctic reset; compare what this particular map actually depicts.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:1202c109a01f8ab2f3e4",
      "from_id": "history:artifact-3dfec71cbe98",
      "to_id": "theory:THS-011",
      "predicate": "related_context",
      "why": "A historical Tartary regional label does not establish the claimed Antarctic reset; compare what this particular map actually depicts.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:20961ba86a76ed133f43",
      "from_id": "theory:HIST-13",
      "to_id": "history:artifact-mercator-1569",
      "predicate": "related_context",
      "why": "Inspect conjectural southern land on an actual 1569 world map; the drawing alone does not establish a lost survey tradition.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:28b35c694f17919fd325",
      "from_id": "theory:MOD-009",
      "to_id": "theory:GUIDE-SATELLITE",
      "predicate": "related_context",
      "why": "Use the imagery-provenance method to investigate a claimed feature before assigning an artificial or concealed origin.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:322e14cb8295089345af",
      "from_id": "theory:HIST-15",
      "to_id": "history:artifact-ac67026bdec2",
      "predicate": "related_context",
      "why": "This is the exact historical fragment discussed by the Piri Reis interpretation; artifact provenance and the claimed Antarctic identification are separate questions.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:3309abc1775e1358ec16",
      "from_id": "theory:THS-007",
      "to_id": "theory:THS-006",
      "predicate": "related_context",
      "why": "One proposes a boundary geometry; the other adds hidden lands. They are related propositions, not interchangeable evidence.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:340d3f61404415349cfb",
      "from_id": "history:artifact-20a39105f356",
      "to_id": "theory:ADD-A015",
      "predicate": "related_context",
      "why": "An identified space photograph is a relevant original for examining the claim that genuine Antarctic photographs from space do not exist.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:384aca59854b1dba8259",
      "from_id": "theory:HIST-08",
      "to_id": "theory:HIST-09",
      "predicate": "related_context",
      "why": "Hollow-Earth narratives often connect to the circulated diary story; neither claim independently authenticates the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:38f1e8ca6fdaffa61457",
      "from_id": "history:artifact-feature-fine1534",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "This different Fine map is useful for an edition comparison, not interchangeable proof for the 1531 map claim.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:3db423b1b98de093682a",
      "from_id": "history:artifact-feature-byrd-broadcast",
      "to_id": "theory:HIST-08",
      "predicate": "related_context",
      "why": "The recording is a source to inspect when quotations are attributed to Byrd. No unverified quotation is supplied as proof of a polar opening.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:52a8b59171c2f027d75f",
      "from_id": "theory:HIST-01",
      "to_id": "theory:HIST-05",
      "predicate": "related_context",
      "why": "The alleged battle and hidden-base story are linked narratives. Separate the claims and inspect their independent source requirements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5627f5823190fd88dfa5",
      "from_id": "history:artifact-ac67026bdec2",
      "to_id": "theory:HIST-15",
      "predicate": "related_context",
      "why": "This is the exact historical fragment discussed by the Piri Reis interpretation; artifact provenance and the claimed Antarctic identification are separate questions.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5658d338abeaa2a443e4",
      "from_id": "theory:HIST-08",
      "to_id": "history:artifact-feature-byrd-broadcast",
      "predicate": "related_context",
      "why": "The recording is a source to inspect when quotations are attributed to Byrd. No unverified quotation is supplied as proof of a polar opening.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:56c8819ea439f250f01f",
      "from_id": "theory:GUIDE-UNDERICE",
      "to_id": "theory:HIST-17",
      "predicate": "related_context",
      "why": "Modern bed-elevation models offer comparison material; they do not demonstrate that an early cartographer had equivalent measurements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:58271d50e481d72c5902",
      "from_id": "history:artifact-mercator-1569",
      "to_id": "theory:HIST-13",
      "predicate": "related_context",
      "why": "Inspect conjectural southern land on an actual 1569 world map; the drawing alone does not establish a lost survey tradition.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:58eb87ddc4f1af95580f",
      "from_id": "theory:HIST-09",
      "to_id": "history:artifact-feature-byrd-broadcast",
      "predicate": "related_context",
      "why": "Compare attributed stories with an actual archival recording; it does not authenticate the circulated secret diary.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5b2d79235c0dda734455",
      "from_id": "history:artifact-e5ecd08f9e21",
      "to_id": "theory:ADD-A014",
      "predicate": "related_context",
      "why": "The diary provides expedition context; material-failure hypotheses still require their own physical and historical evidence.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5ca4fd25eb96904c9c3f",
      "from_id": "theory:HIST-17",
      "to_id": "theory:GUIDE-UNDERICE",
      "predicate": "related_context",
      "why": "Modern bed-elevation models offer comparison material; they do not demonstrate that an early cartographer had equivalent measurements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:6446a7c7a8b1cb75f41f",
      "from_id": "history:artifact-feature-byrd-broadcast",
      "to_id": "theory:HIST-09",
      "predicate": "related_context",
      "why": "Compare attributed stories with an actual archival recording; it does not authenticate the circulated secret diary.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:65f8f909c68a3ff9006f",
      "from_id": "theory:THS-007",
      "to_id": "history:artifact-feature-gleason1892",
      "predicate": "related_context",
      "why": "This authentic flat-Earth advocacy map is relevant to the ice-wall model; its existence does not establish the model’s accuracy.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:683effccd09154562acc",
      "from_id": "theory:HIST-16",
      "to_id": "history:artifact-11a6e51e04f7",
      "predicate": "related_context",
      "why": "Compare the claim with Fine’s double-heart map and the specific BnF impression, rather than substituting a different edition.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:718fe89991b67bc75006",
      "from_id": "theory:HIST-16",
      "to_id": "theory:HIST-15",
      "predicate": "related_context",
      "why": "Both infer ancient Antarctic knowledge from old maps, but they concern different originals and must be tested separately.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:78e8c2dc167a0ff49ef8",
      "from_id": "theory:HIST-16",
      "to_id": "theory:HIST-17",
      "predicate": "related_context",
      "why": "Compare the logic used to identify southern land across different maps, dates and editions.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:84b8064b7fbbc0992d65",
      "from_id": "theory:HIST-12",
      "to_id": "theory:HIST-11",
      "predicate": "related_context",
      "why": "The lost-civilization claim and proposed rapid displacement mechanism are distinct hypotheses; accepting one would not establish the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:85f56def784bb13c7610",
      "from_id": "theory:HIST-17",
      "to_id": "history:artifact-buache-bnf1754",
      "predicate": "related_context",
      "why": "The 1754 southern chart provides a concrete original for comparison. Keep its date and state distinct from other Buache maps and modern bedrock models.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:8b4aa900e2735ccf276b",
      "from_id": "theory:THS-006",
      "to_id": "theory:THS-007",
      "predicate": "related_context",
      "why": "One proposes a boundary geometry; the other adds hidden lands. They are related propositions, not interchangeable evidence.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:8bf6297bebf412b16494",
      "from_id": "theory:HIST-26",
      "to_id": "history:artifact-e5ecd08f9e21",
      "predicate": "related_context",
      "why": "Scott’s final diary is a primary expedition record to consult when assessing later sabotage interpretations; it does not by itself establish them.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:8e07592a95567c21151c",
      "from_id": "history:artifact-11a6e51e04f7",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "Compare the claim with Fine’s double-heart map and the specific BnF impression, rather than substituting a different edition.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:9331ccf2c8a829cb4a82",
      "from_id": "history:artifact-ddbb4ac9d167",
      "to_id": "theory:HIST-13",
      "predicate": "related_context",
      "why": "Ortelius’s 1570 map is a specific original for testing ancient-map interpretations, not an independently verified Antarctic survey.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:974721e12dbfbaf35c08",
      "from_id": "theory:HIST-13",
      "to_id": "history:artifact-ddbb4ac9d167",
      "predicate": "related_context",
      "why": "Ortelius’s 1570 map is a specific original for testing ancient-map interpretations, not an independently verified Antarctic survey.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:997f7dd67c950c15d481",
      "from_id": "theory:THS-008",
      "to_id": "theory:MOD-019",
      "predicate": "related_context",
      "why": "Both concern how Antarctic governance is represented. Consult the actual Treaty rather than infer a blanket ban or automatic expiry.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:9f3e102eaa1f6839253b",
      "from_id": "history:artifact-feature-highjump-aircraft",
      "to_id": "theory:HIST-05",
      "predicate": "related_context",
      "why": "The expedition aircraft frame supplies historical operational context, not evidence of combat with an advanced enemy.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:a15e555c05b4962860f0",
      "from_id": "theory:THS-011",
      "to_id": "history:artifact-2e6fe94adde5",
      "predicate": "related_context",
      "why": "Compare another dated Asian regional map rather than treating every use of Tartaria as proof of the same global theory.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:ac0fb256410e1402c5a2",
      "from_id": "history:artifact-feature-ross1847",
      "to_id": "theory:THS-007",
      "predicate": "related_context",
      "why": "Ross’s chart records southern exploration and the barrier encountered by ships, not a surveyed world-encircling boundary.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b00ba88cfa6e9fcc6397",
      "from_id": "history:artifact-feature-gleason1892",
      "to_id": "theory:THS-006",
      "predicate": "related_context",
      "why": "Compare the printed map with the separate claim of additional lands. The archival map is not a survey beyond its rim.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b0e8c13d17f31d2ced9b",
      "from_id": "history:artifact-buache-bnf1754",
      "to_id": "theory:HIST-17",
      "predicate": "related_context",
      "why": "The 1754 southern chart provides a concrete original for comparison. Keep its date and state distinct from other Buache maps and modern bedrock models.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b696c7c6a4d1b52e32f6",
      "from_id": "theory:HIST-09",
      "to_id": "theory:HIST-08",
      "predicate": "related_context",
      "why": "Hollow-Earth narratives often connect to the circulated diary story; neither claim independently authenticates the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b6d676ab0b1331292e5d",
      "from_id": "theory:HIST-17",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "Compare the logic used to identify southern land across different maps, dates and editions.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b962a39f68e929ed3719",
      "from_id": "theory:GUIDE-SATELLITE",
      "to_id": "theory:MOD-009",
      "predicate": "related_context",
      "why": "Use the imagery-provenance method to investigate a claimed feature before assigning an artificial or concealed origin.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:bc6241ece0b70178e9d9",
      "from_id": "history:artifact-2e6fe94adde5",
      "to_id": "theory:THS-011",
      "predicate": "related_context",
      "why": "Compare another dated Asian regional map rather than treating every use of Tartaria as proof of the same global theory.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c031a533140d76bb0845",
      "from_id": "theory:THS-006",
      "to_id": "history:artifact-feature-gleason1892",
      "predicate": "related_context",
      "why": "Compare the printed map with the separate claim of additional lands. The archival map is not a survey beyond its rim.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c5c76b022eceb8911d5b",
      "from_id": "theory:HIST-05",
      "to_id": "history:artifact-feature-highjump-base",
      "predicate": "related_context",
      "why": "A documented Highjump base frame establishes expedition activity, not the alleged secret battle.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c659af1bd05796e026f3",
      "from_id": "theory:HIST-05",
      "to_id": "theory:HIST-01",
      "predicate": "related_context",
      "why": "The alleged battle and hidden-base story are linked narratives. Separate the claims and inspect their independent source requirements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c8e723381a037618091c",
      "from_id": "theory:HIST-15",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "Both infer ancient Antarctic knowledge from old maps, but they concern different originals and must be tested separately.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:d5a4f895dddab6b3998f",
      "from_id": "theory:HIST-16",
      "to_id": "history:artifact-feature-fine1534",
      "predicate": "related_context",
      "why": "This different Fine map is useful for an edition comparison, not interchangeable proof for the 1531 map claim.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:d7d609bad9411b6795af",
      "from_id": "history:artifact-e5ecd08f9e21",
      "to_id": "theory:HIST-26",
      "predicate": "related_context",
      "why": "Scott’s final diary is a primary expedition record to consult when assessing later sabotage interpretations; it does not by itself establish them.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:d824ffc6a2b646a03f97",
      "from_id": "history:artifact-feature-gleason1892",
      "to_id": "theory:THS-007",
      "predicate": "related_context",
      "why": "This authentic flat-Earth advocacy map is relevant to the ice-wall model; its existence does not establish the model’s accuracy.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:da0be0855d87d1adb36a",
      "from_id": "theory:GUIDE-SATELLITE",
      "to_id": "history:artifact-20a39105f356",
      "predicate": "related_context",
      "why": "Distinguish a specific Apollo photograph from satellite mosaics, processing gaps and screenshots of unknown provenance.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:dbf802999e3360dfd3d2",
      "from_id": "theory:HIST-11",
      "to_id": "theory:HIST-12",
      "predicate": "related_context",
      "why": "The lost-civilization claim and proposed rapid displacement mechanism are distinct hypotheses; accepting one would not establish the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:dd834db89db7157d4491",
      "from_id": "history:artifact-feature-highjump-base",
      "to_id": "theory:HIST-05",
      "predicate": "related_context",
      "why": "A documented Highjump base frame establishes expedition activity, not the alleged secret battle.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:e3a29f7829e05f63f78a",
      "from_id": "theory:ADD-A015",
      "to_id": "history:artifact-20a39105f356",
      "predicate": "related_context",
      "why": "An identified space photograph is a relevant original for examining the claim that genuine Antarctic photographs from space do not exist.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:e8eb31c4fd00b57eda91",
      "from_id": "theory:THS-007",
      "to_id": "history:artifact-feature-ross1847",
      "predicate": "related_context",
      "why": "Ross’s chart records southern exploration and the barrier encountered by ships, not a surveyed world-encircling boundary.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:f532b23e1d0844ee2052",
      "from_id": "history:artifact-20a39105f356",
      "to_id": "theory:GUIDE-SATELLITE",
      "predicate": "related_context",
      "why": "Distinguish a specific Apollo photograph from satellite mosaics, processing gaps and screenshots of unknown provenance.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:f99058fe494c180aa565",
      "from_id": "theory:ADD-A014",
      "to_id": "history:artifact-e5ecd08f9e21",
      "predicate": "related_context",
      "why": "The diary provides expedition context; material-failure hypotheses still require their own physical and historical evidence.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    }
  ],
  "rights": "Record/image rights are per source. This dataset does not grant blanket rights to linked or embedded third-party material."
}
