{
  "key_id": "2026-08-k1",
  "algorithm": "ed25519",
  "public_key_hex": "305f69a8812946cecbc4df4daf97c017ca3f50606f15b361215b8012d9a65983",
  "signed_payload": [
    "computation_id",
    "input_sha256",
    "output_sha256",
    "solver_version",
    "timestamp"
  ],
  "canonicalization": "JSON, keys sorted, separators (',', ':'), UTF-8"
}