Chain of custody receipt

Source #3449

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.

TitleMultiple news sources including Wikipedia
Original URLhttps://sam.gov/entity-registration
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2024-12-01
EntityxAI
Captured2026-04-09T14:24:01.105Z UTC
Hash computed at2026-04-09T14:24:01.105Z UTC
SHA-2565ee05a0075f0536261a59e8547025a05a636439999c85ca3d68699ff2a36f28a
Content length101 bytes
Content preview (first 800 chars) 
xAI built Colossus supercomputer in Memphis, Tennessee, which went fully operational in December 2024

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/3449/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3449/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3449/receipt.json