Chain of custody receipt

Source #65183

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: D/A — OPENAI - FUTURUM A SERIES OF MASTER FUND I LLC (2025-02-18)
Original URLhttps://www.sec.gov/Archives/edgar/data/2041780/000204178025000003/0002041780-25-000003-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2025-02-18
EntityOpenAI
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-31T03:23:05.897Z UTC
SHA-256283a5772c88450dcb947989cfd3f492798666f12abf9ad85c2e7ba5c3828e936
Content length634 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0002041780"
  ],
  "period_ending": null,
  "file_num": [
    "021-538534"
  ],
  "display_names": [
    "OPENAI - FUTURUM A SERIES OF MASTER FUND I LLC  (CIK 0002041780)"
  ],
  "xsl": "xslFormDX01",
  "schema_version": "X0708",
  "sequence": 1,
  "root_forms": [
    "D"
  ],
  "file_date": "2025-02-18",
  "biz_states": [
    "TX"
  ],
  "sics": [],
  "form": "D/A",
  "adsh": "0002041780-25-000003",
  "film_num": [
    "25636151"
  ],
  "biz_locations": [
    "Austin, TX"
  ],
  "file_type": "D/A",
  "file_description": null,
  "inc_states": [
    "DE"
  ],
  "items": [
    "06B",
    "3C",
    "3C.1"
  ]
}

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/65183/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/65183/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/65183/receipt.json