Chain of custody receipt

Source #80800

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: LEIDOS BIOMEDICAL RESEARCH INC — Department of Health and Human Services contract HHSN261200800001E ($4.81B)
Original URLhttps://www.usaspending.gov/award/CONT_AWD_HHSN261200800001E_7529_-NONE-_-NONE-/
PublicationUSASpending.gov
Source typecontract
Date2008-09-26
EntityLeidos
Captured2026-10-03T13:47:28.161Z UTC
Hash computed at2026-10-03T13:47:28.161Z UTC
SHA-2568b9a736c6e17b156b1a4d1d571cf6c9cb671a8ba564be69cfa1f8efd937d3e79
Content length569 bytes
Content preview (first 800 chars) 
{
  "internal_id": 306891989,
  "Award ID": "HHSN261200800001E",
  "Recipient Name": "LEIDOS BIOMEDICAL RESEARCH INC",
  "Award Amount": 4811722791.25,
  "Description": "TAS::75 0849::TAS  OPER OF GOVT R&D GOCO FACILITIES",
  "Awarding Agency": "Department of Health and Human Services",
  "Awarding Sub Agency": "National Institutes of Health",
  "Start Date": "2008-09-26",
  "End Date": "2024-09-06",
  "awarding_agency_id": 806,
  "agency_slug": "department-of-health-and-human-services",
  "generated_internal_id": "CONT_AWD_HHSN261200800001E_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/80800/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/80800/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/80800/receipt.json