Chain of custody receipt

Source #51854

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.

TitleResearch: Center for Responsive Politics — IRS Form 990 filings (no results)
Original URL(none — typed-API result with no web URL)
PublicationSearch Scope Note
Source typeform_990
Date2026
EntityCenter for Responsive Politics
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T08:52:04.229Z UTC
SHA-25653ea29a0699077c0f39aff2e14344584137459d7c77069d2eee8fd45d75c3d5c
Content length232 bytes
Content preview (first 800 chars) 
No IRS Form 990 filings found for "Center for Responsive Politics" in public databases or web search. This may be due to name variations, subsidiary filings, or limited search coverage — not necessarily absence from public record.

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/51854/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/51854/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/51854/receipt.json