Chain of custody receipt

Source #66161

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.

TitleSEC EDGAR: 10-K — Leidos Holdings, Inc. (2018-02-23)
Original URLhttps://www.sec.gov/Archives/edgar/data/1336920/000133692018000008/0001336920-18-000008-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2018-02-23
EntityLeidos
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-06-01T00:40:15.427Z UTC
SHA-256c9047a7e3290cf7c4740257fe4c2e09414b8311a8f0e7ff135e30fce094a58c9
Content length567 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001336920"
  ],
  "period_ending": "2017-12-29",
  "file_num": [
    "001-33072"
  ],
  "display_names": [
    "Leidos Holdings, Inc.  (LDOS)  (CIK 0001336920)"
  ],
  "xsl": null,
  "sequence": 8,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2018-02-23",
  "biz_states": [
    "VA"
  ],
  "sics": [
    "7373"
  ],
  "form": "10-K",
  "adsh": "0001336920-18-000008",
  "film_num": [
    "18636248"
  ],
  "biz_locations": [
    "Reston, VA"
  ],
  "file_type": "EX-21",
  "file_description": "EXHIBIT 21",
  "inc_states": [],
  "items": []
}

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/66161/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/66161/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/66161/receipt.json