Chain of custody receipt

Source #1730

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.

TitleResearch: ImmigrationOS — USASpending contracts (no results)
Original URL(none — typed-API result with no web URL)
PublicationAI Analysis — no URL
Source typecontract
Date2026
EntityImmigrationOS
Captured2026-04-07T04:25:44.098Z UTC
Hash computed at2026-04-07T04:25:44.098Z UTC
SHA-25609f6a447a1af30c708eba66cf8432a29f0a6a0ca52aaa3c10b1dbafd1fc0cb18
Content length85 bytes
Content preview (first 800 chars) 
No USASpending contracts found for "ImmigrationOS" in public databases or web search.

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/1730/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/1730/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/1730/receipt.json