Chain of custody receipt

Source #80801

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, INC. — National Science Foundation contract NSFDACS1219442 ($3.28B)
Original URLhttps://www.usaspending.gov/award/CONT_AWD_NSFDACS1219442_4900_-NONE-_-NONE-/
PublicationUSASpending.gov
Source typecontract
Date2011-12-23
EntityLeidos
Captured2026-10-03T13:47:28.180Z UTC
Hash computed at2026-10-03T13:47:28.180Z UTC
SHA-256319cd9153c2b1177c34c63e512ae91fa2b14d8de735e9e86ac12f7b6851ec167
Content length549 bytes
Content preview (first 800 chars) 
{
  "internal_id": 311476429,
  "Award ID": "NSFDACS1219442",
  "Recipient Name": "LEIDOS, INC.",
  "Award Amount": 3278904845.58,
  "Description": "SCIENCE OPERATION AND MAINTENANCE SUPPORT FOR THE UNITED STATES ANTARCTIC PROGRAM",
  "Awarding Agency": "National Science Foundation",
  "Awarding Sub Agency": "National Science Foundation",
  "Start Date": "2011-12-23",
  "End Date": "2027-09-30",
  "awarding_agency_id": 655,
  "agency_slug": "national-science-foundation",
  "generated_internal_id": "CONT_AWD_NSFDACS1219442_4900_-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/80801/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/80801/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/80801/receipt.json