Chain of custody receipt

Source #80804

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 75N91020F00003 ($1.78B)
Original URLhttps://www.usaspending.gov/award/CONT_AWD_75N91020F00003_7529_75N91019D00024_7529/
PublicationUSASpending.gov
Source typecontract
Date2020-08-31
EntityLeidos
Captured2026-10-03T13:47:28.248Z UTC
Hash computed at2026-10-03T13:47:28.248Z UTC
SHA-25651699c946e5033501a365f14748cf5eee2712a6814bf594821f78ec6f6869326
Content length544 bytes
Content preview (first 800 chars) 
{
  "internal_id": 291582782,
  "Award ID": "75N91020F00003",
  "Recipient Name": "LEIDOS BIOMEDICAL RESEARCH INC",
  "Award Amount": 1775380496.13,
  "Description": "NCI OPERATIONAL TASK ORDER",
  "Awarding Agency": "Department of Health and Human Services",
  "Awarding Sub Agency": "National Institutes of Health",
  "Start Date": "2020-08-31",
  "End Date": "2024-09-27",
  "awarding_agency_id": 806,
  "agency_slug": "department-of-health-and-human-services",
  "generated_internal_id": "CONT_AWD_75N91020F00003_7529_75N91019D00024_7529"
}

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/80804/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/80804/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/80804/receipt.json