Chain of custody receipt

Source #65303

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: SC 13G — American Airlines Group Inc. (2021-12-21)
Original URLhttps://www.sec.gov/Archives/edgar/data/1867102/000119312521363636/0001193125-21-363636-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2021-12-21
EntityAmerican Airlines
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-31T03:39:30.916Z UTC
SHA-2560ea002226fc3915a24f5c72d3cf8efe0ece55b0a63701493bd16764dfab31c95
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/65303/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/65303/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/65303/receipt.json