Chain of custody receipt

Source #2221

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: Cambridge Analytica — cross-reference insights
Original URL(none — typed-API result with no web URL)
PublicationAI Research Pass
Source typegovernment_disclosure
Date2026
EntityCambridge Analytica
Captured2026-04-07T04:48:01.084Z UTC
Hash computed at2026-04-07T04:48:01.084Z UTC
SHA-256a41e54d10165f3495a2bf7562540a5746b92b9e94ff83c90d9ccfc5b0fc0dbdb
Content length1,772 bytes
Content preview (first 800 chars)
```json
{
  "facts": [
    {
      "text": "SEC EDGAR filings exist for an entity named 'Cambridge Analytica' dating from 2021-2022, which is notable given that Cambridge Analytica Ltd. filed for insolvency and ceased operations in May 2018 following the Facebook data scandal - suggesting either a different entity using the same name, successor company filings, or ongoing bankruptcy/liquidation-related disclosures",
      "date": "2021-2022",
      "confidence": "inferential"
    },
    {
      "text": "Multiple SEC filings cluster in a short timeframe (June-September 2021), with six filings in approximately four months, suggesting active regulatory reporting or corporate restructuring activity",
      "date": "2021-06-23 to 2021-09-14",
      "confidence": "inferential"
    },
    {…

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/2221/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/2221/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/2221/receipt.json