Chain of custody receipt

Source #3656

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 filing record
Original URLhttps://www.nasdaq.com/market-activity/stocks/stgw/sec-filings
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2025-03-11
EntityStagwell Inc
Captured2026-04-11T20:19:45.520Z UTC
Hash computed at2026-04-11T20:19:45.520Z UTC
SHA-2566b3128a5edfb0023f59fabdefa49af826462d3c976338f1cb1beb035371ad41b
Content length8,986 bytes
Content preview (first 800 chars)
Stagwell Inc. Class A Common Stock (STGW) SEC Filings | Nasdaq

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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/3656/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3656/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3656/receipt.json