{
  "capability_id": "physics.fluid.colebrook",
  "calculation_version": "1.0.0",
  "protocol_version": "1.0.0-proposed",
  "protocol_document_status": "proposed",
  "verification_revision": "2026-09-26.o2-o3.cov.iut",
  "claim_scope": "O2: Colebrook–White 1/√f = −2 log10(ε/D/3.7 + 2.51/(Re√f)) via Haaland start + Newton on √f (≤2 ULP). Not Darcy hf, not laminar 64/Re, and not Swamee–Jain as the product. ≤2 ULP vs O3 applies only to the published tabulated Colebrook vectors. Not Darcy hf and not laminar 64/Re.",
  "oracle": {
    "class": "O3",
    "library": "mpmath",
    "mpmath_dps": 80,
    "backend": null,
    "rounding": null,
    "independent_of_iut": true,
    "generator_id": "colebrook-o3-v1",
    "generator_version": "1.0.0",
    "generator_sha256": "3a4828e86fe538ef295bec11ec693fe86170d6a9fb5c945768eb4bbb6d3735e8",
    "table_sha256": "fd441b18222303c3e9398308d3ef18fa2c74fd931eeb3c8e9b9504192854d72a"
  },
  "result_summary": {
    "passed": 8,
    "total": 8,
    "failed": 0,
    "max_error_ulp": 0,
    "threshold_ulp": 2,
    "max_threshold_ulp": 2
  },
  "public_files": {
    "manifest": "/evidence/physics.fluid.colebrook/1.0.0.cvp.json",
    "this_file": "/evidence/physics.fluid.colebrook/reproduce.json"
  },
  "vectors": [],
  "disclosure": {
    "policy": "calculatorx-public-evidence-v1",
    "full_validation": "private",
    "representation": "summary",
    "kind": "reproduce"
  }
}