Chain of custody receipt

Source #62775

Cryptographic attestation that the document below was captured in Goblin House's archive at the timestamp shown, with the hash listed. If the original URL goes dark or its content changes, this receipt remains as evidence of what the public record looked like at capture time.

TitleSEARCH_ERROR: North American Coal Corp not found in sam_gov
Original URL(none — typed-API result with no web URL)
PublicationPipeline — search validation (sam_gov)
Source typeclaim_flag
Date2026-05-25
EntityNorth American Coal Corp
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-25T07:23:59.020Z UTC
SHA-25680f16c887895ade34dd7c9f8ed24181f26a07d69a09343e4c1bd6c5479d4d508
Content length280 bytes
Content preview (first 800 chars) 
Entity North American Coal Corp is expected to appear in sam_gov (matches profile: usaspending, sam_gov, opencorporates). Null result likely indicates query mismatch (legal-name variant, subsidiary, or wrong identifier). No alternate identifiers stored — manual review required.

Verifying this receipt

The hash above was computed as:

sha256( coalesce(url, '<no-url>') || '\n' || raw_content )

Anyone with a copy of the original document can verify the match:

  1. Take the URL field and the original document content.
  2. Concatenate url + '\n' + content and SHA-256 it.
  3. Compare to the SHA-256 row above.

Or POST the candidate content to /source/62775/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/62775/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/62775/receipt.json