Chain of custody receipt

Source #3223

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.

TitleWikipedia and Entrepreneurs First documentation of Founders Fund investment
Original URLhttps://www.companiesintheuk.co.uk/ltd/founders-factory
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2025-01-01
EntityMagdrive
Captured2026-04-08T20:26:20.318Z UTC
Hash computed at2026-04-08T20:26:20.318Z UTC
SHA-256c4dd3329e52bf710bd65a9934828e2800a3271ebb72a3d90ede2c0cd94bb9002
Content length120 bytes
Content preview (first 800 chars) 
Founders Fund led Magdrive's pre-seed round and participated in the 2025 seed round for UK spacecraft propulsion startup

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/3223/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3223/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3223/receipt.json