Chain of custody receipt

Source #42291

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 — Kathleen Clark (2021-02-02)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Kathleen%20Clark%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-02-02
EntityKathleen Clark
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:10:53.003Z UTC
SHA-2564c0ea0fa2a66a169038a49e0d1d18d791359b0f0a74e256f7a3751946eb1812d
Content length571 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001770121"
  ],
  "period_ending": null,
  "file_num": [
    "333-252061"
  ],
  "display_names": [
    "Sana Biotechnology, Inc.  (SANA)  (CIK 0001770121)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "S-1"
  ],
  "file_date": "2021-02-02",
  "biz_states": [
    "WA"
  ],
  "sics": [
    "2836"
  ],
  "form": "S-1/A",
  "adsh": "0001193125-21-025048",
  "film_num": [
    "21578833"
  ],
  "biz_locations": [
    "Seattle, WA"
  ],
  "file_type": "S-1/A",
  "file_description": "S-1/A",
  "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/42291/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/42291/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/42291/receipt.json