Chain of custody receipt

Source #72355

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: 10-K — BOK FINANCIAL CORP (2024-02-21)
Original URLhttps://www.sec.gov/Archives/edgar/data/875357/000087535724000008/0000875357-24-000008-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2024-02-21
EntityBok Financial
Captured2026-09-28T12:31:28.508Z UTC
Hash computed at2026-09-28T12:31:28.508Z UTC
SHA-25660fde580e9f55dfe645785951087cd9749f3700d8b71cecba8249c1264b29f3b
Content length580 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000875357"
  ],
  "period_ending": "2023-12-31",
  "file_num": [
    "001-37811"
  ],
  "display_names": [
    "BOK FINANCIAL CORP  (BOKF)  (CIK 0000875357)"
  ],
  "xsl": null,
  "sequence": 2,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2024-02-21",
  "biz_states": [
    "OK"
  ],
  "sics": [
    "6021"
  ],
  "form": "10-K",
  "adsh": "0000875357-24-000008",
  "film_num": [
    "24660476"
  ],
  "biz_locations": [
    "Tulsa, OK"
  ],
  "file_type": "EX-10.4 13",
  "file_description": "EX-10.4 13",
  "inc_states": [
    "OK"
  ],
  "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/72355/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/72355/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/72355/receipt.json