Chain of custody receipt

Source #3669

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.

TitleOfficial company press releases and Wikipedia listing
Original URLhttps://www.sec.gov/Archives/edgar/data/876883/000110465921098992/tm2123756d1_ex99-2.htm
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2021
EntityStagwell Inc
Captured2026-04-11T20:20:27.355Z UTC
Hash computed at2026-04-11T20:20:27.355Z UTC
SHA-256af575f0254f50c969d24138e790919bbc48c92a31bb82638955eab8d60d840cc
Content length204 bytes
Content preview (first 800 chars) 
Known subsidiary brands include 72andSunny, Anomaly, Doner, Forsman & Bodenfors, Code and Theory, YML, Instrument, Locaria, Assembly, ForwardPMX, Gale, Allison+Partners, SKDK, HUNTER, Harris Poll, and NRG

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/3669/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3669/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3669/receipt.json