Chain of custody receipt

Source #72358

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.

Title	SEC EDGAR: 10-K — BOK FINANCIAL CORP ET AL (2016-02-29)
Original URL	https://www.sec.gov/Archives/edgar/data/875357/000087535716000044/0000875357-16-000044-index.htm
Publication	SEC EDGAR
Source type	`sec_filing`
Date	2016-02-29
Entity	Bok Financial
Captured	2026-09-28T12:31:28.540Z UTC
Hash computed at	2026-09-28T12:31:28.540Z UTC
SHA-256	`71f91ff609f3435dcad41f76018b9a73d7b4c8e06ad4207aae80dabe3b32b07a`
Content length	592 bytes

Content preview (first 800 chars)

{
  "ciks": [
    "0000875357"
  ],
  "period_ending": "2015-12-31",
  "file_num": [
    "000-19341"
  ],
  "display_names": [
    "BOK FINANCIAL CORP ET AL  (BOKF)  (CIK 0000875357)"
  ],
  "xsl": null,
  "sequence": 2,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2016-02-29",
  "biz_states": [
    "OK"
  ],
  "sics": [
    "6021"
  ],
  "form": "10-K",
  "adsh": "0000875357-16-000044",
  "film_num": [
    "161467309"
  ],
  "biz_locations": [
    "Tulsa, OK"
  ],
  "file_type": "EX-10.4.10",
  "file_description": "EXHIBIT 10.4.10",
  "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:

Take the URL field and the original document content.
Concatenate url + '\n' + content and SHA-256 it.
Compare to the SHA-256 row above.

Or POST the candidate content to /source/72358/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/72358/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/72358/receipt.json