Chain of custody receipt

Source #40038

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 — Castle Rock Entertainment (2010-02-19)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Castle%20Rock%20Entertainment%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2010-02-19
EntityCastle Rock Entertainment
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:15:17.880Z UTC
SHA-256303cff864dc96287ba934228a94fea25f8fca2f6eaef615d71f97a1540bda55b
Content length563 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001105705"
  ],
  "period_ending": "2009-12-31",
  "file_num": [
    "001-15062"
  ],
  "display_names": [
    "TIME WARNER INC.  (CIK 0001105705)"
  ],
  "xsl": null,
  "sequence": 6,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2010-02-19",
  "biz_states": [
    "NY"
  ],
  "sics": [
    "7812"
  ],
  "form": "10-K",
  "adsh": "0000950123-10-014479",
  "film_num": [
    "10619205"
  ],
  "biz_locations": [
    "New York, NY"
  ],
  "file_type": "EX-21",
  "file_description": "EX-21",
  "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/40038/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/40038/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/40038/receipt.json