Chain of custody receipt

Source #42778

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 — Mark Middleton (2013-05-28)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Mark%20Middleton%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2013-05-28
EntityMark Middleton
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:08:53.614Z UTC
SHA-256f56d519a7105b1f23aafedb4b4b4caba1ccb75c8ed11be2babb4cae95df5aabf
Content length586 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001577592"
  ],
  "period_ending": null,
  "file_num": [
    "021-197129"
  ],
  "display_names": [
    "Hanzo Archives Ltd  (CIK 0001577592)"
  ],
  "xsl": "xslFormDX01",
  "schema_version": "X0706",
  "sequence": 1,
  "root_forms": [
    "D"
  ],
  "file_date": "2013-05-28",
  "biz_states": [
    "X0"
  ],
  "sics": [],
  "form": "D",
  "adsh": "0001144204-13-031871",
  "film_num": [
    "13875602"
  ],
  "biz_locations": [
    "Egham, Surrey, X0"
  ],
  "file_type": "D",
  "file_description": null,
  "inc_states": [
    "X0"
  ],
  "items": [
    "06"
  ]
}

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/42778/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/42778/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/42778/receipt.json