Chain of custody receipt

Source #51

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: Peter Mandelson - federal contracts site:usaspending.gov
Original URLhttps://www.usaspending.gov/search/?hash=eyJmaWx0ZXJzIjp7ImtleXdvcmQiOiJQZXRlciBNYW5kZWxzb24ifX0
PublicationPublic Record Research
Source typediscovery_scope_note
Date2024
EntityPeter Mandelson
Captured2026-04-05T07:36:50.994Z UTC
Hash computed at2026-04-05T07:36:50.994Z UTC
SHA-25691a8c6b179083211a31d05cbdc2d6cf78772a1e2d9f89650345c32ae1079fa51
Content length715 bytes
Content preview (first 800 chars)
Peter Mandelson is a British politician and life peer who served as a Labour MP, European Commissioner for Trade (2004-2008), and held various UK Cabinet positions. As a British citizen and foreign national, he would not be a direct recipient of U.S. federal contracts through USASpending.gov. USASpending.gov tracks U.S. federal government spending including contracts, grants, and loans to U.S. entities. A search for Peter Mandelson on this platform would not yield relevant results, as he is not a U.S. contractor, grant recipient, or federal employee. Any business associations he may have with entities that do U.S. federal business would be listed under those corporate entities, not under his personal name.

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/51/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/51/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/51/receipt.json