Chain of custody receipt

Source #6305

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.

TitleFederal News Network report on GSA-CISA shared services procurement
Original URLhttps://gsa.federalschedules.com/resources/essential-websites-for-gsa-schedule-contractors/
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2020-10-01
EntityEnDyna
Captured2026-04-13T03:03:04.263Z UTC
Hash computed at2026-04-13T03:03:04.263Z UTC
SHA-2561f34ae889d0975bb9fe9b6d72d76ff88e87e534ab6589da696e1c643b5db053f
Content length131 bytes
Content preview (first 800 chars) 
CISA and GSA awarded EnDyna a five-year, $13 million contract to create centralized cybersecurity vulnerability disclosure platform

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/6305/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/6305/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/6305/receipt.json