Forge Attestation

Gold402 Verified. Hand-reviewed and on the curated list — curation is the bar. The stamp means a human read this entry and the endpoint answered when we knocked. It is not a delivery test: we have not paid this service and graded what came back, so treat it as "reachable and speaks the protocol," never as "this is worth the money."

Signed third-party evidence records for x402 transactions, where every claim is labelled `witnessed` or `asserted`: witnessed means Forge observed it directly, either probing what the endpoint advertised at that moment or checking a Base settlement transaction against that advertised price and payee; asserted means a party stated it and Forge only notarised the statement. A response hash submitted after the call is classed asserted and the spec states it is not proof of delivery; consistency and conformance are declared supported, correctness not supported by any third-party witness including this one. Ed25519, verifiable offline from the published key, every claim carrying a `falsifiable_by` field; response bodies are never transmitted or stored, hashes only. $0.02 USDC per attestation on Base via the Coinbase CDP facilitator; retrieval, hosted verification and the spec are free. Example: `POST /attest {"url":"https://example.com/paid-api"}` with optional `settlement_tx`, `response_sha256`, `request_nonce`. Free: `POST /attestations/verify`, `GET /attestations/:id`.