Chain of custody receipt

Source #60774

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 — American Airlines (2021-12-21)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22American%20Airlines%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-12-21
EntityAmerican Airlines
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-24T23:54:57.435Z UTC
SHA-256f999ea48a2003e488e8ec6a44907d94d08256784bf8e7a36861f4a915137a27c
Content length717 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001867102",
    "0000006201"
  ],
  "period_ending": null,
  "file_num": [
    "005-93177"
  ],
  "display_names": [
    "Vertical Aerospace Ltd.  (EVTL, EVTL-WT)  (CIK 0001867102)",
    "American Airlines Group Inc.  (AAL)  (CIK 0000006201)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2021-12-21",
  "biz_states": [
    "X0",
    "TX"
  ],
  "sics": [
    "3721",
    "4512"
  ],
  "form": "SC 13G",
  "adsh": "0001193125-21-363636",
  "film_num": [
    "211509818"
  ],
  "biz_locations": [
    "London, X0",
    "Fort Worth, TX"
  ],
  "file_type": "SC 13G",
  "file_description": "SC 13G",
  "inc_states": [
    "E9",
    "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/60774/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/60774/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/60774/receipt.json