Chain of custody receipt

Source #80742

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: NVIDIA CORP — Department of Health and Human Services contract 75N92018K00088 ($9.0K)
Original URLhttps://www.usaspending.gov/award/CONT_AWD_75N92018K00088_7529_-NONE-_-NONE-/
PublicationUSASpending.gov
Source typecontract
Date2018-06-27
EntityNvidia
Captured2026-10-03T13:46:56.008Z UTC
Hash computed at2026-10-03T13:46:56.008Z UTC
SHA-256d2f54591ecb01e69079243a59b7ea70718cc2154bdf98aca9c9724c00ceb9c8b
Content length496 bytes
Content preview (first 800 chars) 
{
  "internal_id": 291589187,
  "Award ID": "75N92018K00088",
  "Recipient Name": "NVIDIA CORP",
  "Award Amount": 8999,
  "Description": "QUADRO GV100",
  "Awarding Agency": "Department of Health and Human Services",
  "Awarding Sub Agency": "National Institutes of Health",
  "Start Date": "2018-06-27",
  "End Date": "2018-06-27",
  "awarding_agency_id": 806,
  "agency_slug": "department-of-health-and-human-services",
  "generated_internal_id": "CONT_AWD_75N92018K00088_7529_-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/80742/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/80742/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/80742/receipt.json