{
  "format": "human-record-source-check-registry/0.1",
  "updated": "2026-09-27",
  "purpose": "Append-only operational receipts for rechecking source locators and preservation routes. A source check is not record evidence unless separately promoted into an evidence observation.",
  "model": "https://thehumanrecord.net/SOURCE_MODEL.md",
  "checks": [
    {
      "id": "thr:source-check:25463bdb-35a4-4744-a1ba-d0f047b2e482",
      "source_id": "thr:source:47f0817a-3cae-4ded-98eb-320332a72bd5",
      "checked_at": "2026-09-16",
      "precision": "date",
      "locator": "https://www.theguardian.com/money/2009/nov/28/how-to-make-sieve-riddle",
      "method": "public_retrieval_surface_used_by_framework_aperture",
      "outcome": "retrieval_surface_content_available",
      "live_http_state": "not_established",
      "retrieval_surface_freshness": "surface reported a cached crawl approximately 1.1 years old",
      "fingerprint": null,
      "comparison_to_prior_observation": "not_possible_no_comparable_digest_from_this_check",
      "preservation_lookup": "not_performed",
      "preservation_action": "none",
      "record_evidence_promoted": false,
      "note": "The retrieval surface returned the expected Guardian article/title and Mike Turnock context. This is not a fresh live-HTTP observation and does not establish current origin-server availability or byte identity."
    },
    {
      "id": "thr:source-check:5af10c7a-3d2c-4532-87f9-7c8b05b772da",
      "source_id": "thr:source:2790ee98-28a4-4fca-bd80-b5b5484c47ef",
      "checked_at": "2026-09-16",
      "precision": "date",
      "locator": "https://heritagecrafts.org.uk/craft/sieve-and-riddle-making/",
      "method": "public_retrieval_surface_used_by_framework_aperture",
      "outcome": "retrieval_surface_content_available",
      "live_http_state": "not_established",
      "retrieval_surface_freshness": "surface reported a crawl from approximately the previous month",
      "fingerprint": null,
      "comparison_to_prior_observation": "not_possible_no_comparable_digest_from_this_check",
      "preservation_lookup": "not_performed",
      "preservation_action": "none",
      "record_evidence_promoted": false,
      "note": "The retrieval surface returned the expected Heritage Crafts page. This does not establish a fresh census, current origin-server availability, unchanged content or preservation."
    },
    {
      "id": "thr:source-check:0e50262d-943e-4467-81bd-a04712fa973a",
      "source_id": "thr:source:5de43bc3-cf94-40c3-b312-1217d37dd812",
      "checked_at": "2026-09-16",
      "precision": "date",
      "locator": "https://worldwarwings.com/wwii-flak-gun-crews-casualties/",
      "method": "public_retrieval_surface_used_by_framework_aperture",
      "outcome": "retrieval_surface_content_available",
      "live_http_state": "not_established",
      "retrieval_surface_freshness": "surface reported a crawl from approximately the previous month",
      "fingerprint": null,
      "comparison_to_prior_observation": "not_possible_no_comparable_digest_from_this_check",
      "preservation_lookup": "not_performed",
      "preservation_action": "none",
      "record_evidence_promoted": false,
      "note": "The retrieval surface returned the cited World War Wings article. This does not establish current origin-server availability, source independence, unchanged bytes, historical truth or archival preservation."
    },
    {
      "id": "thr:source-check:9f583a46-5d61-4b6d-8b6c-2e3f7e8b01c2",
      "source_id": "thr:source:8d40b5c1-3eb6-47d3-86e2-48e95853e930",
      "checked_at": "2026-09-18",
      "locator": "https://dcc.dickinson.edu/nepos-hannibal/chapter-13",
      "method": "fresh_public_retrieval_before_record4_promotion",
      "outcome": "live_locator_retrieved",
      "fingerprint": null,
      "record_evidence_promoted": false,
      "note": "Fresh currentness check observed the DCC Chapter 13 reading surface. This check does not upgrade Nepos' propositions into direct observation or establish preservation."
    },
    {
      "id": "thr:source-check:b19c62b0-ae2c-4f93-8c64-2dc3841f9d26",
      "source_id": "thr:source:7a1b2e15-a9b2-4af4-9e0b-2c44b10eb9d2",
      "checked_at": "2026-09-18",
      "locator": "https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Polybius/3*.html",
      "method": "fresh_public_retrieval_before_record4_promotion",
      "outcome": "live_locator_retrieved",
      "fingerprint": null,
      "record_evidence_promoted": false,
      "note": "Fresh currentness check observed the Polybius Book 3 reading surface, including its 1922 Loeb / not-yet-proofread notice. Live retrieval is not manuscript verification, a critical-edition check or preservation."
    },
    {
      "id": "thr:source-check:648c7d3e-4c75-562d-b0aa-3f607f8ab191",
      "source_id": "thr:source:2790ee98-28a4-4fca-bd80-b5b5484c47ef",
      "checked_at": "2026-09-19",
      "precision": "date",
      "locator": "https://heritagecrafts.org.uk/craft/sieve-and-riddle-making/",
      "method": "public_retrieval_surface_used_by_framework_aperture",
      "outcome": "retrieval_surface_content_available",
      "fingerprint": null,
      "comparison_to_prior_observation": "semantic_status_no_delta_on_retrieval_surface; byte_identity_not_checked",
      "preservation_lookup": "attempted_no_route_established",
      "preservation_action": "none",
      "record_evidence_promoted": false,
      "note": "The retrieval surface returned the Heritage Crafts Sieve and riddle making page and still showed CRITICALLY ENDANGERED / Status Critical, with 0 main-income professionals, 1 side-income professional, 1 trainee, and the 2025 Red List reviewer section. This does not establish current origin-server availability, unchanged bytes, a fresh independent practitioner census, preservation, or truth, and it does not alter the record evidence state. A separate preservation-route lookup was attempted through the available retrieval aperture, but Memento/Internet Archive lookup endpoints were inaccessible; no preservation route was established. An older heritage.wp-support.team surface with different maker/trainee counts was not treated as an authoritative prior state or preservation copy because its relationship and temporal authority were not established.",
      "live_http_state": "not_established",
      "retrieval_surface_freshness": "retrieval surface reported a crawl on 2026-09-19"
    },
    {
      "id": "thr:source-check:07c69f0b-7406-5604-af21-197b147d8fc8",
      "source_id": "thr:source:24f10634-c5da-48d2-9475-8d2e096d5cd6",
      "checked_at": "2026-09-27",
      "precision": "date",
      "locator": "https://www.metmuseum.org/art/collection/search/11112",
      "method": "public_web_retrieval_surface_direct_url",
      "outcome": "retrieval_surface_content_available",
      "live_http_state": "not_established",
      "retrieval_surface_freshness": "retrieval surface reported a crawl on 2026-09-27",
      "fingerprint": null,
      "comparison_to_prior_observation": "semantic_identity_no_delta_on_checked_fields; byte_identity_not_checked",
      "preservation_lookup": "not_performed",
      "preservation_action": "none",
      "record_evidence_promoted": false,
      "note": "The public retrieval surface returned The Metropolitan Museum of Art Camp Fire object page with title Camp Fire, Winslow Homer, date 1880, object number 27.181, public-domain status and the current museum object description. This is a fresher operational currentness observation only: it does not establish origin-server HTTP state, unchanged bytes, complete provenance continuity, legal title, or preservation, and it does not alter the Camp Fire record evidence state."
    },
    {
      "id": "thr:source-check:654e7942-5b93-5077-b630-30ed17eb12bd",
      "source_id": "thr:source:2790ee98-28a4-4fca-bd80-b5b5484c47ef",
      "checked_at": "2026-09-27",
      "precision": "date",
      "locator": "https://heritagecrafts.org.uk/craft/sieve-and-riddle-making/",
      "method": "public_web_retrieval_surface_direct_url",
      "outcome": "retrieval_surface_content_available",
      "live_http_state": "not_established",
      "retrieval_surface_freshness": "retrieval surface reported a crawl on 2026-09-27",
      "fingerprint": null,
      "comparison_to_prior_observation": "semantic_status_no_delta_on_checked_fields; byte_identity_not_checked",
      "preservation_lookup": "not_performed",
      "preservation_action": "none",
      "record_evidence_promoted": false,
      "note": "The current Heritage Crafts retrieval surface still reports Sieve and riddle making as CRITICALLY ENDANGERED / Status Critical, with 0 main-income professionals, 1 side-income professional and 1 trainee, and names the 2025 Red List reviewer surface. This re-observation is operational currentness only. It does not establish origin-server HTTP state, unchanged bytes, an independent practitioner census, preservation, endorsement, or truth, and it does not alter the living-knowledge record evidence state."
    },
    {
      "id": "thr:source-check:1d1e816b-35d0-568b-8c56-8f7ef3de1c6a",
      "source_id": "thr:source:47f0817a-3cae-4ded-98eb-320332a72bd5",
      "checked_at": "2026-09-27",
      "precision": "date",
      "locator": "https://www.theguardian.com/money/2009/nov/28/how-to-make-sieve-riddle",
      "method": "public_web_retrieval_surface_direct_url",
      "outcome": "retrieval_surface_content_available",
      "live_http_state": "not_established",
      "retrieval_surface_freshness": "retrieval surface reported a crawl within the previous week",
      "fingerprint": null,
      "comparison_to_prior_observation": "semantic_article_identity_no_delta_on_checked_fields; byte_identity_not_checked",
      "preservation_lookup": "not_performed",
      "preservation_action": "none",
      "record_evidence_promoted": false,
      "note": "The Guardian retrieval surface returned the expected 28 November 2009 Jon Henley article, including the Mike Turnock workshop context and the article's then-current claim that he was the last British handmade sieve and riddle maker. This is a much fresher retrieval-surface observation than the 16 September cached surface, but it still does not establish live origin HTTP state, unchanged bytes, preservation, present-day craft status, or truth, and it does not alter the record evidence state."
    }
  ],
  "ceilings": [
    "SOURCE CHECK != RECORD EVIDENCE",
    "RETRIEVAL SURFACE != LIVE ORIGIN",
    "CACHED CONTENT AVAILABLE != LIVE TODAY",
    "LIVE TODAY != PRESERVED",
    "RETRIEVED AGAIN != UNCHANGED",
    "NO COMPARABLE DIGEST != CONTENT MATCH",
    "FAILED CHECK != SOURCE NEVER EXISTED",
    "CHECK RECEIPT != PRESERVATION ACTION",
    "PRESERVATION ROUTE != TRUTH"
  ]
}