Chain of custody receipt

Source #1892

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: DARPA — cross-reference insights
Original URL(none — typed-API result with no web URL)
PublicationAI Research Pass
Source typegovernment_disclosure
Date2026
EntityDARPA
Captured2026-04-07T04:34:40.733Z UTC
Hash computed at2026-04-07T04:34:40.733Z UTC
SHA-2563c5a6693cb359d0eabdecdd29f3581b3e93edf86ad47165065938c4b271e3073
Content length1,406 bytes
Content preview (first 800 chars)
```json
{
  "facts": [
    {
      "text": "No USASpending contract records were found for DARPA in the searched database, which is unusual given DARPA's known role as a major defense research funding agency - this may indicate the search parameters were too narrow, data is classified, or contracts are recorded under different entity names (such as full name 'Defense Advanced Research Projects Agency')",
      "date": null,
      "confidence": "inferential"
    },
    {
      "text": "The absence of lobbying disclosure records for DARPA is consistent with its status as a government agency rather than a private entity, as federal agencies do not typically engage in registered lobbying activities",
      "date": null,
      "confidence": "inferential"
    },
    {
      "text": "No court…

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/1892/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/1892/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/1892/receipt.json