{
  "message": "Civarro public key distribution: Chronovault reader-approval key verification example. This message authorizes no reader or record. 2026-09-29.\n",
  "signature_base64": "MEYCIQDFgNv14lUPR7TGoIalZfvnQUyrtawAwj+a2d1C8AvFqwIhAJx7gKTFg+0BiGqdlmWTyeRjkP7ZdqAwDdKE2lJiTm9I",
  "signature_encoding": "ASN.1 DER ECDSA"
}