Chain of custody receipt

Source #3111

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.

TitleGAO Report GAO-04-295R
Original URLhttps://www.workforcebulletin.com/new-federal-agency-policies-and-protocols-for-artificial-intelligence-utilization-and-procurement-can-provide-useful-guidance-for-private-entities
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2004-12-30
EntityFederal Procurement Data System
Captured2026-04-08T19:59:50.894Z UTC
Hash computed at2026-04-08T19:59:50.894Z UTC
SHA-2567eb5e8180ae9a34e1b5f9fa1aa89bceaf577cb47873ae8b77a461d16e43aa231
Content length117 bytes
Content preview (first 800 chars) 
GAO stated that FPDS data are inaccurate and incomplete with sufficient problems to warrant concern about reliability

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/3111/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3111/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3111/receipt.json