{
  "sketch": {
    "seed": 20260718,
    "layers": [
      3,
      6,
      8,
      11
    ],
    "n_positions": 6,
    "sketch_dim": 32,
    "rank_top_m": 8
  },
  "calibration": {
    "mu": {
      "3": -7.309343497798924,
      "6": -5.587953915026016,
      "8": -5.450299438360374,
      "11": -5.6453210104866685
    },
    "sigma": {
      "3": 0.212757760417348,
      "6": 0.1316980161516204,
      "8": 0.0888338944598564,
      "11": 0.11255746540264383
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    "n_samples": 48,
    "gen_mismatch_rate": 0.01
  },
  "verifier": {
    "deep_check_rate": 0.25,
    "alpha": 0.01
  },
  "generation": {
    "gen_len": 12,
    "decoding": "greedy",
    "jitter_sigma_rel": 0.0003
  },
  "model_m": "gpt2",
  "hmac_demo_key": "assay-demo-key-0123456789abcdef!",
  "signature_note": "HMAC-SHA256 over Receipt.canonical_bytes(); simulates a TEE attestation"
}