Chain of custody receipt

Source #10320

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.

TitlePreqin database and multiple financial publications
Original URLhttps://sec-api.io/docs
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2015-07-01
EntityKey Square Group
Captured2026-04-14T01:19:49.771Z UTC
Hash computed at2026-04-14T01:19:49.771Z UTC
SHA-256547ec4addab5fa4c90383fe10c87a40f43c057841f86209c5c3ec95d74812b5f
Content length91 bytes
Content preview (first 800 chars) 
Key Square Group was established in Q3 of 2015 with $2 billion in backing from George Soros

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/10320/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/10320/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/10320/receipt.json