{"algorithm":"Ed25519","publicKeyHex":"0e1b40472f388090c765bfeb6c67b9eedbfeba7cfb194fdf47f5b2dc333251e6","purpose":"x402 Forensics Evidence Vault signing only (separate from the receive wallet's EVM key)","note":"Verify a vault entry or query receipt FREE at GET /v1/evidence/verify"}