{
  "capability_id": "engineering.conformity.z_prime",
  "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-prime vs a separate-module hypot identity (≤2 ULP). Not z-score, not zeta, and not En. ≤2 ULP vs O3 applies only to the published tabulated z-prime vectors. It is not a whole-domain guarantee and does not cover z-score, zeta, or En.",
  "oracle": {
    "class": "O3",
    "library": "mpmath 1.4.1",
    "mpmath_dps": 80,
    "backend": null,
    "rounding": null,
    "independent_of_iut": true,
    "generator_id": "z-prime-mpmath-o3",
    "generator_version": "1.0.0",
    "generator_sha256": "17b39f5a4eb2f1255db77a49da3d4d67c03972315100a93a5fb0c00feaca40ec",
    "table_sha256": "36270c3a4a24205381f4c2b1530dc3b8004e5aef49304237eba5499fcaa67fd8"
  },
  "result_summary": {
    "passed": 8,
    "total": 8,
    "failed": 0,
    "max_error_ulp": 1,
    "threshold_ulp": 2,
    "max_threshold_ulp": 2
  },
  "public_files": {
    "manifest": "/evidence/engineering.conformity.z_prime/1.0.1.cvp.json",
    "this_file": "/evidence/engineering.conformity.z_prime/reproduce.json"
  },
  "vectors": [],
  "disclosure": {
    "policy": "calculatorx-public-evidence-v1",
    "full_validation": "private",
    "representation": "summary",
    "kind": "reproduce"
  }
}