Chain of custody receipt

Source #53824

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.

TitleResearch: Mark Pocan — SEC filings (no results)
Original URL(none — typed-API result with no web URL)
PublicationSearch Scope Note
Source typesec_filing
Date2026
EntityMark Pocan
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T10:05:31.734Z UTC
SHA-2568d76f9bdb6b53f85488013fab1eab11d892e257f24d38fc42d01bc9a76697d8b
Content length203 bytes
Content preview (first 800 chars) 
No SEC filings found for "Mark Pocan" in public databases or web search. This may be due to name variations, subsidiary filings, or limited search coverage — not necessarily absence from public record.

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/53824/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/53824/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/53824/receipt.json