Chain of custody receipt

Source #80760

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: INVARIANT CORPORATION — Department of Defense contract SPRRA224F0194 ($11.33M)
Original URLhttps://www.usaspending.gov/award/CONT_AWD_SPRRA224F0194_9700_SPRRA224D0010_9700/
PublicationUSASpending.gov
Source typecontract
Date2024-09-26
EntityInvariant
Captured2026-10-03T13:46:59.587Z UTC
Hash computed at2026-10-03T13:46:59.587Z UTC
SHA-256d00c8edfaaead1d6f4dd06adc2379803ba21dffe37a61a9a439e9298098e98b3
Content length493 bytes
Content preview (first 800 chars) 
{
  "internal_id": 361847020,
  "Award ID": "SPRRA224F0194",
  "Recipient Name": "INVARIANT CORPORATION",
  "Award Amount": 11332309.51,
  "Description": "MISSILE PROCUREMENT FOR ATI-D",
  "Awarding Agency": "Department of Defense",
  "Awarding Sub Agency": "Defense Logistics Agency",
  "Start Date": "2024-09-26",
  "End Date": "2025-10-31",
  "awarding_agency_id": 1173,
  "agency_slug": "department-of-defense",
  "generated_internal_id": "CONT_AWD_SPRRA224F0194_9700_SPRRA224D0010_9700"
}

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/80760/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/80760/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/80760/receipt.json