{
  "id": "O0-CRP-027",
  "title": "Fresh-World Replication of O0-CRP-022 (Track 2 R4)",
  "record_class": "REPLICATION",
  "version": "1.0.0",
  "status": "APPROXIMATELY_REPLICATED",
  "date": "2026-07-28",
  "program": "CONTACT_AND_REVELATION",
  "category": "emergence",
  "preregistration_version": "1.0.0",
  "preregistration_frozen_before_execution": true,
  "evidence_type": "COMPUTATIONAL SIMULATION, direct replication",
  "replication_status": "INDEPENDENT",
  "physical_validation": "NONE",
  "source_proposition": "Direct replication of O0-CRP-022 on independent world seeds 15000-15029 to test seed-invariance of the delta*(0.7)=0.20 finding.",
  "parent_study": "O0-CRP-022",
  "related_records": ["O0-CRP-022", "O0-CRP-024", "O0-CRP-025", "O0-CRP-026"],
  "verdict": {
    "label": "APPROXIMATELY_REPLICATED",
    "replication_delta_star_070": 0.10,
    "original_delta_star_070": 0.20,
    "one_grid_step_off": true,
    "matches_original_exactly": false,
    "realization_theorem_pass": true,
    "positive_control_pass": true
  },
  "key_findings": {
    "delta_star_shifted_one_step": "delta*(0.7) is 0.10 on fresh seeds vs 0.20 in the original",
    "auc_at_delta_010_crosses_threshold": "AUC = 0.701 at delta=0.10 in the replication vs 0.643 in the original - threshold-crossing sampling variance",
    "matched_dual_replicates": "matched-dual AUC 0.386 vs original 0.376, statistically indistinguishable",
    "positive_control_perfect": "IDENTITY vs NOISE_CONTROL AUC = 1.000 in both, confirming discriminability of extreme cases",
    "true_boundary_estimate": "likely delta*(0.7) in [0.10, 0.15] range across seed variance"
  },
  "artifacts": {
    "preregistration": "preregistration.md",
    "scientific_record": "scientific_record.md",
    "runner": "src/run_study.py",
    "analyzer": "src/analyze.py",
    "summary": "results/summary.json",
    "raw_features": "results/raw/*.npy",
    "figures": [
      "figures/01_replication_vs_original.png",
      "figures/02_matched_and_noise_comparison.png"
    ]
  },
  "reproducibility": {
    "runtime_seconds": 169.5,
    "determinism": "full - fixed seeds throughout",
    "dependencies": ["python 3.10+", "numpy", "sklearn"]
  },
  "revision_history": [
    {"version": "1.0.0", "date": "2026-07-28", "notes": "Initial scientific record after preregistered execution"}
  ]
}