{
  "capability_id": "engineering.conformity.z_score",
  "calculation_version": "1.0.1",
  "protocol_version": "1.0.0-proposed",
  "protocol_document_status": "proposed",
  "verification_revision": "2026-09-25.o2-o3",
  "claim_scope": "O2: proficiency-testing z-score vs a separate-module division identity (≤2 ULP). Not zeta, not En, and not an ILAC G8 specification decision. ≤2 ULP vs O3 applies only to the published tabulated z-score vectors (pass, the |z|=2 boundary, warning, fail, an alias, a negative result, one awkward pair, and another |z|=2 pair). It is not a whole-domain guarantee and does not cover zeta, En, or an ILAC G8 specification decision.",
  "oracle": {
    "class": "O3",
    "library": "mpmath 1.4.1",
    "mpmath_dps": 80,
    "backend": null,
    "rounding": null,
    "independent_of_iut": true,
    "generator_id": "z-score-mpmath-o3",
    "generator_version": "1.0.0",
    "generator_sha256": "a6aaecd74bd3e81bdb1c3312681e3f905a781bf3e8b6c22c4de7f323b909523c",
    "table_sha256": "3c38cb57188b990e6beb8ec3e9e08276767ecc362e231134d357db1a3ea7d39d"
  },
  "result_summary": {
    "passed": 8,
    "total": 8,
    "failed": 0,
    "max_error_ulp": 0,
    "threshold_ulp": 2,
    "max_threshold_ulp": 2
  },
  "public_files": {
    "manifest": "/evidence/engineering.conformity.z_score/1.0.1.cvp.json",
    "this_file": "/evidence/engineering.conformity.z_score/reproduce.json"
  },
  "vectors": [],
  "disclosure": {
    "policy": "calculatorx-public-evidence-v1",
    "full_validation": "private",
    "representation": "summary",
    "kind": "reproduce"
  }
}