Chain of custody receipt

Source #3606

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.

TitleHistorical declassification studies cited in Congressional Research Service analysis
Original URLhttps://www.usaspending.gov/data/about-the-data-download.pdf
PublicationDirected Inquiry — Web Search
Source typediscovery_scope_note
Date1956-01-01
EntityUS Department of Defense (Pentagon)
Captured2026-04-11T20:15:11.680Z UTC
Hash computed at2026-04-11T20:15:11.680Z UTC
SHA-25602ec89b9cc16785810d9def8e24fa9a25c07bfd2fa52e503dc7aaeb4918b210c
Content length151 bytes
Content preview (first 800 chars)
As of 1956, the U.S. Department of Defense estimated that 90% of its classified documents could be publicly disclosed with no harm to national security

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/3606/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3606/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3606/receipt.json