Chain of custody receipt

Source #80771

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.

TitleUSASpending.gov: US AIR FORCE ACADEMY HOSPITAL — Department of Defense contract FA700006C0034 ($60.1K)
Original URLhttps://www.usaspending.gov/award/CONT_AWD_FA700006C0034_9700_-NONE-_-NONE-/
PublicationUSASpending.gov
Source typecontract
Date2006-09-23
EntityUS Air Force
Captured2026-10-03T13:47:03.586Z UTC
Hash computed at2026-10-03T13:47:03.586Z UTC
SHA-256093992197a5770a7b2488dd6d03252c84e901ec5b5a62224330f2ae2ceb095dc
Content length466 bytes
Content preview (first 800 chars) 
{
  "internal_id": 298349794,
  "Award ID": "FA700006C0034",
  "Recipient Name": "US AIR FORCE ACADEMY HOSPITAL",
  "Award Amount": 60142,
  "Description": null,
  "Awarding Agency": "Department of Defense",
  "Awarding Sub Agency": "Department of the Air Force",
  "Start Date": "2006-09-23",
  "End Date": "2007-09-29",
  "awarding_agency_id": 1173,
  "agency_slug": "department-of-defense",
  "generated_internal_id": "CONT_AWD_FA700006C0034_9700_-NONE-_-NONE-"
}

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/80771/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/80771/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/80771/receipt.json