Chain of custody receipt

Source #46673

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 — Bret Johnsen (2010-11-09)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Bret%20Johnsen%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2010-11-09
EntityBret Johnsen
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T04:18:48.919Z UTC
SHA-256bc52fe56bec9cacf9018140ebf32ec9b4403657caef9ed3f8deba35b44e46fbc
Content length660 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001413147",
    "0001224370"
  ],
  "period_ending": "2010-11-05",
  "file_num": [
    "001-31650"
  ],
  "display_names": [
    "Johnsen Bret W  (CIK 0001413147)",
    "MINDSPEED TECHNOLOGIES, INC  (CIK 0001224370)"
  ],
  "xsl": null,
  "sequence": 2,
  "root_forms": [
    "4"
  ],
  "file_date": "2010-11-09",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "3674"
  ],
  "form": "4",
  "adsh": "0001127602-10-027571",
  "film_num": [
    "101177673"
  ],
  "biz_locations": [
    "",
    "Newport Beach, CA"
  ],
  "file_type": "EX-24",
  "file_description": "POWER OF ATTORNEY",
  "inc_states": [
    "",
    "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/46673/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/46673/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/46673/receipt.json