Chain of custody receipt

Source #42860

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 — Founders Fund (2021-02-16)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Founders%20Fund%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-02-16
EntityFounders Fund
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:08:53.614Z UTC
SHA-256e53268174d9fae5bcc6535a9e83fd16d83c71f3c78bd2fcd7ffb7656371a486c
Content length681 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001559720",
    "0001695329"
  ],
  "period_ending": null,
  "file_num": [
    "005-91861"
  ],
  "display_names": [
    "Airbnb, Inc.  (ABNB)  (CIK 0001559720)",
    "Founders Fund II Management, LLC  (CIK 0001695329)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2021-02-16",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "7340"
  ],
  "form": "SC 13G",
  "adsh": "0001104659-21-024295",
  "film_num": [
    "21640096"
  ],
  "biz_locations": [
    "San Francisco, CA",
    "San Francisco, CA"
  ],
  "file_type": "SC 13G",
  "file_description": "SC 13G",
  "inc_states": [
    "DE",
    "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/42860/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/42860/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/42860/receipt.json