Chain of custody receipt

Source #612

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.

Title	FEC: KARP, ALEXANDER donation $5.0K to EMPLOYEES OF PALANTIR TECHNOLOGIES INC. PAC
Original URL	https://www.fec.gov/data/receipts/?committee_id=C00498691&contributor_name=Alex%20Karp
Publication	Federal Election Commission (FEC)
Source type	`web_search`
Date	2025-12-17
Entity	Alex Karp
Captured	2026-04-06T03:09:15.480Z UTC
Hash computed at	2026-04-06T03:09:15.480Z UTC
SHA-256	`c0b3916129e738d841800e45f3a80cc271a5d3c8fbe3e8894b28d1fb4157e9b8`
Content length	8,705 bytes

Content preview (first 800 chars)

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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:

Take the URL field and the original document content.
Concatenate url + '\n' + content and SHA-256 it.
Compare to the SHA-256 row above.

Or POST the candidate content to /source/612/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/612/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/612/receipt.json