{"kid":"d06c6006c5d560e9","alg":"Ed25519","public_key":"MCowBQYDK2VwAyEAhJDeHuf6ZAPaBGIvQAsv7sRXYwArk3pc4I/goB0qWo8=","public_key_format":"SPKI DER, base64","signed_message":"sirenic-v1:{kid}:{timestamp}:{body_sha256_base64}","headers":{"key_id":"X-Sirenic-Key-Id","timestamp":"X-Sirenic-Timestamp","signature":"X-Sirenic-Signature"},"scope":"Every 2xx /v1 response. Hash the raw response body bytes (sha256, base64), rebuild the signed message with the kid and timestamp headers, then verify the Ed25519 signature header against this public key."}