Chain of custody receipt

Source #1509

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: Alex Karp — Lobbying disclosures (no results)
Original URL(none — typed-API result with no web URL)
PublicationAI Analysis — no URL
Source typegovernment_disclosure
Date2026
EntityAlex Karp
Captured2026-04-07T04:17:18.823Z UTC
Hash computed at2026-04-07T04:17:18.823Z UTC
SHA-2567d7a43507350a6f2f1a9e044d684fc45ed3cb89367ae0fd98fe68b3e618b1eb9
Content length80 bytes
Content preview (first 800 chars) 
No Lobbying disclosures found for "Alex Karp" in public databases or web search.

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/1509/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/1509/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/1509/receipt.json