Chain of custody receipt

Source #6195

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.

TitleBloomberg report from December 2025
Original URLhttps://www.kqed.org/news/93962/what-is-mark-zuckerbergs-fwd-us
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2025-01-01
EntityChan Zuckerberg Initiative
Captured2026-04-13T02:53:34.678Z UTC
Hash computed at2026-04-13T02:53:34.678Z UTC
SHA-2560e815b20bfbaaf4157ba93aa55628efbaf02d92a5cca26c30e13c1748c2a9b83
Content length86 bytes
Content preview (first 800 chars) 
Chan Zuckerberg Initiative formally ended its relationship with FWD.us earlier in 2025

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/6195/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/6195/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/6195/receipt.json