Chain of custody receipt

Source #3657

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 EDGAR database filing index
Original URLhttps://viewpoint.pwc.com/dt/us/en/sec/regulations/regulation_sk/regulation_sk__3_US/100_business__1_US/item_103_legal_proce__1_US.html
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2023-03-06
EntityStagwell Inc
Captured2026-04-11T20:19:45.535Z UTC
Hash computed at2026-04-11T20:19:45.535Z UTC
SHA-256f0d1b427e9d22f8430c4b87829e2f16e79c14e439ad1f8a787aed80cbbda89f4
Content length105 bytes
Content preview (first 800 chars) 
Stagwell Inc's 2023 10-K filing was submitted to SEC on March 6, 2023 for period ending December 31, 2022

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/3657/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3657/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3657/receipt.json