Chain of custody receipt

Source #45801

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 — David Zinsner (2021-01-05)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22David%20Zinsner%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-01-05
EntityDavid Zinsner
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T04:45:55.076Z UTC
SHA-256fbdb7074de4aa60ebc56b6d1defeb98ce2ccb4de730d9f9b9318ea26b7e9622e
Content length610 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001807794"
  ],
  "period_ending": null,
  "file_num": [
    "021-385242"
  ],
  "display_names": [
    "Credo Technology Group Holding Ltd  (CRDO)  (CIK 0001807794)"
  ],
  "xsl": "xslFormDX01",
  "schema_version": "X0708",
  "sequence": 1,
  "root_forms": [
    "D"
  ],
  "file_date": "2021-01-05",
  "biz_states": [
    "E9"
  ],
  "sics": [],
  "form": "D",
  "adsh": "0000950103-21-000075",
  "film_num": [
    "21504630"
  ],
  "biz_locations": [
    "Grand Cayman, E9"
  ],
  "file_type": "D",
  "file_description": null,
  "inc_states": [
    "E9"
  ],
  "items": [
    "06B"
  ]
}

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/45801/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/45801/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/45801/receipt.json