Chain of custody receipt

Source #61046

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 — Comcast Corp (2004-02-17)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Comcast%20Corp%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2004-02-17
EntityComcast Corp
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-24T23:56:43.461Z UTC
SHA-256aa70435f7fa01e5f0cd5c2509ab53b5b1f8f2accf9c9869793f8e86e4a986896
Content length687 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001166691",
    "0000913414"
  ],
  "period_ending": null,
  "file_num": [
    "005-78608"
  ],
  "display_names": [
    "COMCAST CORP  (CCZ, CMCSA)  (CIK 0001166691)",
    "BARCLAYS GLOBAL INVESTORS NA /CA/  (CIK 0000913414)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2004-02-17",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "4841",
    "0000"
  ],
  "form": "SC 13G",
  "adsh": "0000913414-04-000140",
  "film_num": [
    "04604311"
  ],
  "biz_locations": [
    "",
    "San Francisco, CA"
  ],
  "file_type": "SC 13G",
  "file_description": null,
  "inc_states": [
    "PA",
    "",
    "CA"
  ],
  "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/61046/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/61046/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/61046/receipt.json