Chain of custody receipt

Source #46076

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: filing — Amentum Services Inc. (2025-11-25)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Amentum%20Services%20Inc.%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2025-11-25
EntityAmentum Services Inc.
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T04:45:55.076Z UTC
SHA-256937fc61b02dc4696235e7a03f8752b053e74178e9287cd56939e100082f190a3
Content length585 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0002011286"
  ],
  "period_ending": "2025-10-03",
  "file_num": [
    "001-42176"
  ],
  "display_names": [
    "Amentum Holdings, Inc.  (AMTM)  (CIK 0002011286)"
  ],
  "xsl": null,
  "sequence": "2",
  "root_forms": [
    "10-K"
  ],
  "file_date": "2025-11-25",
  "biz_states": [
    "VA"
  ],
  "sics": [
    "7389"
  ],
  "form": "10-K",
  "adsh": "0001628280-25-053993",
  "film_num": [
    "251521708"
  ],
  "biz_locations": [
    "Chantilly, VA"
  ],
  "file_type": "EX-21.1",
  "file_description": "EX-21.1",
  "inc_states": [
    "DE"
  ],
  "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/46076/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/46076/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/46076/receipt.json