Chain of custody receipt

Source #2948

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.

TitleDavid Allen's written evidence to UK Parliament
Original URLhttps://researchbriefings.files.parliament.uk/documents/CDP-2025-0017/CDP-2025-0017.pdf
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2017-01-01
EntityAnduril Industries
Captured2026-04-08T18:08:36.092Z UTC
Hash computed at2026-04-08T18:08:36.092Z UTC
SHA-256b2227ae2ef66abab7987447699d61162700733004d35af4ec8b88a8171ffed6e
Content length150 bytes
Content preview (first 800 chars) 
Anduril Industries was founded in 2017 and has more than 1,400 employees working in the United Kingdom, United States, Australia, and around the world

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/2948/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/2948/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/2948/receipt.json