Chain of custody receipt

Source #3665

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.

TitleSEC Form 10-K filing
Original URLhttps://www.sec.gov/edgar/browse/?CIK=0000876883
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2021-08-02
EntityStagwell Marketing Group LLC
Captured2026-04-11T20:20:27.334Z UTC
Hash computed at2026-04-11T20:20:27.334Z UTC
SHA-25608be3f41e24320cfc7dc8b47b8c20f4b2d8808329411425dafb2640ad495d070
Content length109 bytes
Content preview (first 800 chars) 
The Stagwell Subject Entities comprised Stagwell Marketing Group LLC and its direct and indirect subsidiaries

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/3665/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3665/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3665/receipt.json