Chain of custody receipt

Source #6300

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.

TitleGSA Inspector General report on classified contracts oversight
Original URLhttps://www.gsa.gov/
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2024-09-16
EntityOffice of Assisted Acquisition Services (AAS)
Captured2026-04-13T03:03:04.231Z UTC
Hash computed at2026-04-13T03:03:04.231Z UTC
SHA-256d2668022a15a3086e8374af70063dcd06d8e5ee2d35100eac2629f4281390397
Content length129 bytes
Content preview (first 800 chars) 
AAS contracts have become more complex, including contracts considered high-risk because of their classified performance elements

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/6300/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/6300/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/6300/receipt.json