Chain of custody receipt

Source #43748

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 — David Kendall (2020-02-21)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22David%20Kendall%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2020-02-21
EntityDavid Kendall
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:05:26.323Z UTC
SHA-256b59c5957707fdd177ee72adf413212da356b842da90216e2d341e751f144d605
Content length690 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001732647",
    "0000899460"
  ],
  "period_ending": "2020-02-20",
  "file_num": [
    "000-50865"
  ],
  "display_names": [
    "Kendall David M  (CIK 0001732647)",
    "MANNKIND CORP  (MNKD)  (CIK 0000899460)"
  ],
  "xsl": "xslF345X03",
  "schema_version": "X0306",
  "sequence": 1,
  "root_forms": [
    "4"
  ],
  "file_date": "2020-02-21",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "2834"
  ],
  "form": "4",
  "adsh": "0001209191-20-011689",
  "film_num": [
    "20641410"
  ],
  "biz_locations": [
    "",
    "Westlake Village, CA"
  ],
  "file_type": "4",
  "file_description": "FORM 4 SUBMISSION",
  "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/43748/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/43748/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/43748/receipt.json