Chain of custody receipt

Source #10220

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.

TitleOpenSecrets lobbying disclosure data
Original URLhttps://www.potomacofficersclub.com/darpa-has-named-ecs-as-a-prime-contractor-for-its-1-25b-tass-contract/
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2023-12-31
EntityBooz Allen Hamilton
Captured2026-04-14T01:09:45.970Z UTC
Hash computed at2026-04-14T01:09:45.970Z UTC
SHA-256c7a8e26c37fd1d029456374478c70de96c23215ca12ea461a3451a3ad31f6965
Content length54 bytes
Content preview (first 800 chars) 
Booz Allen Hamilton spent $620,000 on lobbying in 2023

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/10220/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/10220/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/10220/receipt.json