Chain of custody receipt

Source #3159

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.

TitleOctober 2023 BIS rule updates expanding geographic scope of semiconductor controls
Original URLhttps://www.bis.gov/iec
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2023-10-17
EntityExport Control Classification Number (ECCN) 3B001
Captured2026-04-08T20:05:12.236Z UTC
Hash computed at2026-04-08T20:05:12.236Z UTC
SHA-256c73d0021510ab7fb3c6718083ed2a46e76398630891c635cb0955038cecc0493
Content length141 bytes
Content preview (first 800 chars) 
Country Group D:5 restrictions apply to ECCN 3B001 equipment exports, affecting licensing requirements for multiple destinations beyond China

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/3159/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3159/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3159/receipt.json