Chain of custody receipt

Source #42653

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 — Tom Watson (2021-12-23)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Tom%20Watson%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-12-23
EntityTom Watson
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:08:53.614Z UTC
SHA-2565f4236db52cc029d6c42b95c824257664e5bfc19381f2880f26ad8d577b27927
Content length579 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001901287"
  ],
  "period_ending": null,
  "file_num": [
    "021-426610"
  ],
  "display_names": [
    "52 Hanover LLC  (CIK 0001901287)"
  ],
  "xsl": "xslFormDX01",
  "schema_version": "X0708",
  "sequence": 1,
  "root_forms": [
    "D"
  ],
  "file_date": "2021-12-23",
  "biz_states": [
    "ME"
  ],
  "sics": [],
  "form": "D",
  "adsh": "0001901287-21-000001",
  "film_num": [
    "211516915"
  ],
  "biz_locations": [
    "Portland, ME"
  ],
  "file_type": "D",
  "file_description": null,
  "inc_states": [
    "ME"
  ],
  "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/42653/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/42653/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/42653/receipt.json