{
  "version": "0.1",
  "generated_at": "2026-04-19T17:30:00Z",
  "notes": "Production signing keys for the /api/vault/attestation/* artifacts. Live runtime mirror at https://arcakey.ai/api/vault/attestation/pubkey — that endpoint and this file must agree; rotation updates both.",
  "keys": [
    {
      "id": "ak-sign-2026-04",
      "alg": "Ed25519",
      "public_key_base64": "o5Z4cHQZG0cts3qEBlKhWxsRY0J3d1fLj5l21KWDeCA=",
      "valid_from": "2026-04-19T00:00:00Z",
      "valid_until": "2027-04-19T00:00:00Z"
    }
  ]
}