Chain of custody receipt

Source #42744

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 — Federal Bureau of Prisons (2010-05-10)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Federal%20Bureau%20of%20Prisons%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2010-05-10
EntityFederal Bureau of Prisons
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:08:53.614Z UTC
SHA-2566dec06cfabd6b1bb6c8fb261bfe775885e7125b7a6473e708ab87bec3b0280eb
Content length564 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001488139"
  ],
  "period_ending": null,
  "file_num": [
    "333-165821"
  ],
  "display_names": [
    "Ameresco, Inc.  (AMRC)  (CIK 0001488139)"
  ],
  "xsl": null,
  "sequence": 16,
  "root_forms": [
    "S-1"
  ],
  "file_date": "2010-05-10",
  "biz_states": [
    "MA"
  ],
  "sics": [
    "1700"
  ],
  "form": "S-1/A",
  "adsh": "0000950123-10-046620",
  "film_num": [
    "10813857"
  ],
  "biz_locations": [
    "Framingham, MA"
  ],
  "file_type": "CORRESP",
  "file_description": null,
  "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/42744/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/42744/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/42744/receipt.json