Chain of custody receipt

Source #3155

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.

TitleFederal Register rule 88 FR 73424 establishing current ECCN 3B001 controls
Original URLhttps://www.bis.doc.gov/index.php/licensing/commerce-control-list-classification/export-control-classification-number-eccn
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2023-10-25
EntityExport Control Classification Number (ECCN) 3B001
Captured2026-04-08T20:05:12.214Z UTC
Hash computed at2026-04-08T20:05:12.214Z UTC
SHA-2569cdd86199f818147003fa48d54b440f49698297ca1b46263fbac097bfcb371cc
Content length152 bytes
Content preview (first 800 chars) 
ECCN 3B001 controls equipment for manufacturing semiconductor devices, materials, or related equipment and specially designed components and accessories

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/3155/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3155/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3155/receipt.json