Chain of custody receipt

Source #72902

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 — COMMERCE GROUP INC /MA (2005-03-14)
Original URLhttps://www.sec.gov/Archives/edgar/data/811612/000091064705000079/0000910647-05-000079-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2005-03-14
EntityUs Chamber PAC/U.S. Chamber Of Commerce
Captured2026-09-28T12:48:12.977Z UTC
Hash computed at2026-09-28T12:48:12.977Z UTC
SHA-256536d2822342195fdb79c8ec42f39ce16f676615ed01196349cb73a1f58d542e3
Content length579 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000811612"
  ],
  "period_ending": "2004-12-31",
  "file_num": [
    "001-13672"
  ],
  "display_names": [
    "COMMERCE GROUP INC /MA  (CIK 0000811612)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2005-03-14",
  "biz_states": [
    "MA"
  ],
  "sics": [
    "6331"
  ],
  "form": "10-K",
  "adsh": "0000910647-05-000079",
  "film_num": [
    "05678722"
  ],
  "biz_locations": [
    "Webster, MA"
  ],
  "file_type": "10-K",
  "file_description": "BODY OF FORM 10-K",
  "inc_states": [
    "MA"
  ],
  "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/72902/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/72902/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/72902/receipt.json