Chain of custody receipt

Source #42863

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 (2021-06-03)
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
Date2021-06-03
EntityFounders Fund
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:08:53.614Z UTC
SHA-25650c206eb37248b38277eb3d2dc976d0bc4b355d07e78007e744d5e2c15d5e3c1
Content length653 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001190213",
    "0001627475"
  ],
  "period_ending": "2021-06-01",
  "file_num": [
    "001-38678"
  ],
  "display_names": [
    "HARVEY KEVIN  (CIK 0001190213)",
    "UPWORK, INC  (UPWK)  (CIK 0001627475)"
  ],
  "xsl": null,
  "sequence": 2,
  "root_forms": [
    "4"
  ],
  "file_date": "2021-06-03",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "7374"
  ],
  "form": "4",
  "adsh": "0001209191-21-037960",
  "film_num": [
    "21994360"
  ],
  "biz_locations": [
    "",
    "San Francisco, CA"
  ],
  "file_type": "EX-24.4_990308",
  "file_description": "POA DOCUMENT",
  "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/42863/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/42863/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/42863/receipt.json