{
  "step": "C312",
  "status": "passed",
  "author_review": "Integrated source derivation, six-case calculation, finite-field boundaries and signed phase handling",
  "independent_math_review": "evidence/C312_Independent_Math_Review.md",
  "independent_script": "evidence/C312_Independent_Math.py",
  "independent_results": "evidence/C312_Independent_Math_Results.json",
  "source_review": "evidence/C312_Source_Derivation.md",
  "agreement": "All six regular rows and all cumulative membership outcomes match; independent input hashes match frozen copies.",
  "script_portability_note": "Independent reviewer added optional input/output paths without changing mathematical logic; default and packet forms passed.",
  "historical_corroboration": false,
  "source_prescribed_selector_established": false,
  "next_step_executed": false
}