Don't trust — verify. Check a signature against the oracle's key, or check whether a record exists on the rail.
① Verify a signature
Paste a signed message and its Ed25519 signature (from any oracle feed or proof). We check it against the oracle's public key.
② Check a record on the rail
Paste a document/record's content (or its SHA-256 hash). We check whether it's already registered — the same check that stops trade-finance double-financing.