Chain of custody receipt

Source #47448

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 — Coinbase (2026-03-18)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Coinbase%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2026-03-18
EntityCoinbase
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T04:18:48.919Z UTC
SHA-2568664e258395580c868074ae39499dcbbaf3de1ca64958fe6103f7f00ec5b0d2e
Content length579 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0002103612"
  ],
  "period_ending": null,
  "file_num": [
    "333-292586"
  ],
  "display_names": [
    "Morgan Stanley Bitcoin Trust  (CIK 0002103612)"
  ],
  "xsl": null,
  "sequence": "5",
  "root_forms": [
    "S-1"
  ],
  "file_date": "2026-03-18",
  "biz_states": [
    "NY"
  ],
  "sics": [
    "6221"
  ],
  "form": "S-1/A",
  "adsh": "0001104659-26-029738",
  "film_num": [
    "26764552"
  ],
  "biz_locations": [
    "New York, NY"
  ],
  "file_type": "EX-10.3",
  "file_description": "EXHIBIT 10.3",
  "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/47448/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/47448/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/47448/receipt.json