Chain of custody receipt

Source #50589

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.

TitleResearch: Federal Bureau of Prisons — USASpending contracts (no results)
Original URL(none — typed-API result with no web URL)
PublicationSearch Scope Note
Source typecontract
Date2026
EntityFederal Bureau of Prisons
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T07:37:47.137Z UTC
SHA-256274746ea3184aba5443b7e9c67f451d0747d23295366e2d8d485ab992ddea72c
Content length228 bytes
Content preview (first 800 chars) 
No USASpending contracts found for "Federal Bureau of Prisons" in public databases or web search. This may be due to name variations, subsidiary filings, or limited search coverage — not necessarily absence from public record.

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/50589/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/50589/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/50589/receipt.json