Chain of custody receipt

Source #112

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: HPSP - federal contracts site:usaspending.gov
Original URLhttps://www.usaspending.gov/search/?hash=eyJmaWx0ZXJzIjp7ImtleXdvcmQiOiJIUFNQIn19
PublicationPublic Record Research
Source typediscovery_scope_note
Date2024
EntityHPSP
Captured2026-04-05T07:51:33.135Z UTC
Hash computed at2026-04-05T07:51:33.135Z UTC
SHA-25623c3efcbc7e62e54ac12a192df4be9ee744e060d067f0ca9a68c98110a64f783
Content length682 bytes
Content preview (first 800 chars)
The Health Professions Scholarship Program (HPSP) is a military scholarship program administered by the Department of Defense through the Army, Navy, and Air Force. While HPSP itself is a scholarship/personnel program rather than a traditional contract, related spending and administrative contracts may appear in federal spending databases. USASpending.gov tracks federal contracts, grants, loans, and other financial assistance. Research into HPSP-related federal spending would primarily involve searching for contracts related to program administration, medical education partnerships, or healthcare recruitment services connected to military medical corps scholarship programs.

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/112/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/112/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/112/receipt.json