Chain of custody receipt

Source #6399

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.

TitleopenDemocracy investigation
Original URLhttps://www.opensecrets.org/federal-lobbying/clients/summary?id=D000055177
PublicationDirected Inquiry — Web Search
Source typediscovery_scope_note
Date2019-01-01
EntitySir John Sawers
Captured2026-04-13T03:10:49.348Z UTC
Hash computed at2026-04-13T03:10:49.348Z UTC
SHA-25663a52c6e8e8899fe7737bbbe783169de348658b36e14df6cfc0f0924874e648c
Content length123 bytes
Content preview (first 800 chars) 
Sir John Sawers set up a meeting between Palantir CEO Alex Karp and Cabinet Office permanent secretary John Manzoni in 2019

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/6399/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/6399/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/6399/receipt.json