{
  "id": "O0-CRP-034",
  "title": "Track 2 Physical-Data Leg — Matched-Source Indistinguishability Holds in Real ECG",
  "authors": ["Ozone Archive Research Program"],
  "record_class": "REPLICATION",
  "track": "Track 2",
  "program": "Track 2 physical extension",
  "version": "1.1.0",
  "date": "2026-07-30",
  "status": "PHYSICAL_HOLDS",
  "physical_validation": "SINGLE_PATIENT_N1",
  "verdict": "PHYSICAL_HOLDS",
  "keywords": [
    "physical data",
    "ECG",
    "MIT-BIH",
    "matched-source indistinguishability",
    "delay embedding",
    "preregistered replication"
  ],
  "data_source": {
    "signal_provider": "scipy.datasets.electrocardiogram()",
    "underlying_dataset": "MIT-BIH Arrhythmia Database, record 208",
    "recording_year_approx": 1980,
    "sample_rate_hz": 360,
    "duration_seconds": 300,
    "predates_modern_ml": true
  },
  "preregistered_rules_pass": {
    "positive_control": true,
    "shuffled_control": true,
    "matched_source_chance_band": true,
    "no_overlap": true
  },
  "discrimination_summary": {
    "identity_vs_null_control_auc": 1.0000,
    "identity_vs_shuffled_auc":     1.0000,
    "identity_vs_matched_dual_auc": 0.4514,
    "identity_vs_same_trajectory_auc_epsilon_control": 0.0079
  },
  "corrections": [
    {
      "target": "O0-PAPER-001",
      "target_version": "1.0.0",
      "correction": "MATCHED_DUAL description 'bit-identical construction to IDENTITY (same seed, same matrix, same noise realization)' is incorrect. Correct description: same world matrix M as IDENTITY, different noise-realization trial seed. The bit-identity check is a separate sanity gate; the primary chance-band test uses independent draws from the same distribution.",
      "resolution": "O0-PAPER-001 to be revised to v1.1 with corrected wording; SCOPE-002 C002 to add correction note.",
      "documented_in": "scientific_record.md §7"
    }
  ],
  "preregistration_history": [
    {
      "version": "1.0",
      "status": "SUPERSEDED",
      "reason": "bit-identical MATCHED_DUAL is a mathematical tautology + sklearn artifact, not an empirical test",
      "outputs_preserved_in": "data/v1.0_diagnostic/"
    },
    {
      "version": "1.1",
      "status": "EXECUTED",
      "date": "2026-07-30"
    }
  ],
  "responds_to_critiques": [
    "AI research — models based on AI infra not human beings: real physical data from 1980 predates modern ML"
  ],
  "registered_followups": ["CRP-034b", "CRP-034c", "CRP-034d"],
  "related": [
    "O0-CRP-022", "O0-CRP-024", "O0-CRP-025", "O0-CRP-026", "O0-CRP-027",
    "O0-CRP-030", "O0-CRP-031", "O0-CRP-032", "O0-CRP-033",
    "O0-SCOPE-001", "O0-SCOPE-002", "O0-PAPER-001"
  ]
}