Chain of custody receipt

Source #1840

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.

TitleAI Analysis: National Security Agency (NSA) — cross-reference insights
Original URL(none — typed-API result with no web URL)
PublicationAI Research Pass
Source typegovernment_disclosure
Date2026
EntityNational Security Agency (NSA)
Captured2026-04-07T04:31:33.922Z UTC
Hash computed at2026-04-07T04:31:33.922Z UTC
SHA-256c5f3a1e5adf5c2b5318cbe5c57f8d705e140bc370c8838b9f8f0a85c00367923
Content length1,596 bytes
Content preview (first 800 chars)
```json
{
  "facts": [
    {
      "text": "No USASpending contract records were found for the NSA, which is notable given the agency's massive operational budget - this suggests contracts may be classified, routed through other agencies, or filed under different entity names",
      "date": null,
      "confidence": "inferential"
    },
    {
      "text": "The absence of lobbying disclosure records indicates the NSA as a government agency does not engage in traditional lobbying, though contractors and affiliated private sector entities working with NSA may lobby on related matters under different names",
      "date": null,
      "confidence": "inferential"
    },
    {
      "text": "No court records appearing in standard searches suggests NSA-related litigation may be sealed…

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/1840/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/1840/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/1840/receipt.json