Chain of custody receipt

Source #66078

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 — Coinbase Global, Inc. (2026-02-12)
Original URLhttps://www.sec.gov/Archives/edgar/data/1679788/000167978826000015/0001679788-26-000015-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2026-02-12
EntityCoinbase
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-06-01T00:35:16.259Z UTC
SHA-25638bce74082535d1907509e7448698793bb0e656ccf67bcae0697f87a90a4c5b5
Content length584 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001679788"
  ],
  "period_ending": "2025-12-31",
  "file_num": [
    "001-40289"
  ],
  "display_names": [
    "Coinbase Global, Inc.  (COIN)  (CIK 0001679788)"
  ],
  "xsl": null,
  "sequence": "7",
  "root_forms": [
    "10-K"
  ],
  "file_date": "2026-02-12",
  "biz_states": [
    "NY"
  ],
  "sics": [
    "6199"
  ],
  "form": "10-K",
  "adsh": "0001679788-26-000015",
  "film_num": [
    "26626705"
  ],
  "biz_locations": [
    "New York, NY"
  ],
  "file_type": "EX-10.16",
  "file_description": "EX-10.16",
  "inc_states": [
    "TX"
  ],
  "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/66078/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/66078/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/66078/receipt.json