Chain of custody receipt

Source #80353

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.

TitleFEC Candidate Overview for Jim Costa (H4CA20082)
Original URLhttps://www.fec.gov/data/candidate/H4CA20082/
PublicationDirected Inquiry — Web Search
Source typeweb_search
Date2026-06-30
EntityJIM COSTA FOR CONGRESS
Captured2026-10-02T01:45:25.157Z UTC
Hash computed at2026-10-02T01:45:25.157Z UTC
SHA-25671d0c96909a23e780e1e3220c319b9251fb387b15903c0c7262f568b20867441
Content length101 bytes
Content preview (first 800 chars) 
Jim Costa received $1,338,630 in total receipts for the 2025-2026 election cycle as of June 30, 2026.

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/80353/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/80353/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/80353/receipt.json