Chain of custody receipt

Source #6331

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.

TitleFortune magazine Form 990 analysis
Original URLhttps://projects.propublica.org/nonprofits/organizations/522149962/202020459349300032/IRS990
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2021-01-01
EntityIn-Q-Tel
Captured2026-04-13T03:05:17.726Z UTC
Hash computed at2026-04-13T03:05:17.726Z UTC
SHA-2566d55f7ae2d38674439f787473630a3d505bbed123df5c1fdd8dccb41351a77bb
Content length5,866 bytes
Content preview (first 800 chars)
In Q Tel Inc - Form 990 - Nonprofit Explorer - ProPublica

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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/6331/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/6331/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/6331/receipt.json