Chain of custody receipt

Source #66846

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: 4 — Larson John P. (2021-07-02)
Original URLhttps://www.sec.gov/Archives/edgar/data/1745041/000089924321027199/0000899243-21-027199-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2021-07-02
EntityJohn Larson
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-06-01T01:42:50.175Z UTC
SHA-256023de485c9688ba2569b56d7b8c876f4521e93fecebbabb8d78b1a23c42b774b
Content length663 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001609333",
    "0001745041"
  ],
  "period_ending": "2021-06-16",
  "file_num": [
    "001-38580"
  ],
  "display_names": [
    "Larson John P.  (CIK 0001609333)",
    "IAA, Inc.  (CIK 0001745041)"
  ],
  "xsl": "xslF345X03",
  "schema_version": "X0306",
  "sequence": 1,
  "root_forms": [
    "4"
  ],
  "file_date": "2021-07-02",
  "biz_states": [
    "IL"
  ],
  "sics": [
    "5500"
  ],
  "form": "4",
  "adsh": "0000899243-21-027199",
  "film_num": [
    "211070149"
  ],
  "biz_locations": [
    "",
    "Westchester, IL"
  ],
  "file_type": "4",
  "file_description": "FORM 4 SUBMISSION",
  "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/66846/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/66846/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/66846/receipt.json