Chain of custody receipt

Source #10201

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.

TitleMultiple defense industry sources
Original URLhttps://www.gao.gov/products/nsiad-93-184
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2023
EntityElbit Systems of America (ESA)
Captured2026-04-14T01:07:50.835Z UTC
Hash computed at2026-04-14T01:07:50.835Z UTC
SHA-256020bf958c4b77604ea1f4868763529be5d5d41e848a80bec4f3f73c754c9eda7
Content length159 bytes
Content preview (first 800 chars) 
Elbit Systems of America secured a $500 million contract from US Department of Defense to supply Squad Binocular Night Vision Goggle systems to US Marine Corps

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/10201/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/10201/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/10201/receipt.json