Chain of custody receipt

Source #62939

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 — CF (2009-09-28)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Concord%20Fund%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2009-09-28
EntityConcord Fund
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-25T07:26:41.833Z UTC
SHA-25609032dec726e2d77e09dbf537136d5f98d05c9455605e45200b4a743440201df
Content length699 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0000722079",
    "0001324404"
  ],
  "period_ending": null,
  "file_num": [
    "005-34386"
  ],
  "display_names": [
    "TERRA INDUSTRIES INC  (CIK 0000722079)",
    "CF Industries Holdings, Inc.  (CF)  (CIK 0001324404)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13D"
  ],
  "file_date": "2009-09-28",
  "biz_states": [
    "IA",
    "IL"
  ],
  "sics": [
    "2870",
    "2870"
  ],
  "form": "SC 13D",
  "adsh": "0001104659-09-056437",
  "film_num": [
    "091089184"
  ],
  "biz_locations": [
    "Sioux City, IA",
    "Deerfield, IL"
  ],
  "file_type": "SC 13D",
  "file_description": "SC 13D",
  "inc_states": [
    "MD",
    "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/62939/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/62939/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/62939/receipt.json