Chain of custody receipt

Source #51714

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: Michael Greenberger — SEC filings (no results)
Original URL(none — typed-API result with no web URL)
PublicationSearch Scope Note
Source typesec_filing
Date2026
EntityMichael Greenberger
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T08:40:07.110Z UTC
SHA-256d98aa6600bcbce810e97155bc8c125c13222e4e0775e222ccf1e4f177b29b189
Content length212 bytes
Content preview (first 800 chars) 
No SEC filings found for "Michael Greenberger" 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/51714/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/51714/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/51714/receipt.json