{
  "protocol": {
    "name": "CVP",
    "version": "1.0.0-proposed",
    "revision": "2026-09-13",
    "spec_sha256": "f62725968356c92930531cd6085db76e216da06e95be53d636b0d2cf3218b148",
    "spec": "https://www.calculatorx.com/developers/cvp/spec/1.0"
  },
  "document_status": "proposed",
  "calculator": {
    "id": "scientific-notation",
    "version": "2.0.1",
    "title": "Scientific Notation Calculator",
    "formula_family": "scientific_notation",
    "capability_id": "math.scientific_notation",
    "verification_revision": "2026-10-21.scientific-complete-contract-v2"
  },
  "profile": "core",
  "verified_scope": "all published modes",
  "status": "VERIFIED",
  "verification_status": "VERIFIED",
  "production_freshness": "CURRENT",
  "overall_trust": "VERIFIED",
  "runner": {
    "name": "cvp-runner",
    "version": "1.0.0"
  },
  "environment": {
    "runtime": "node",
    "runtime_version": "22.20.0",
    "numeric_model": "IEEE-754 binary64",
    "os": "darwin"
  },
  "suite": {
    "id": "scientific-notation",
    "version": "2.0.1",
    "uri": "https://www.calculatorx.com/evidence/math.scientific_notation/2.0.1.json",
    "verification_revision": "2026-10-21.scientific-complete-contract-v2"
  },
  "obligation_set": [
    "CVP-PROV-01",
    "CVP-MODEL-01",
    "CVP-SCOPE-01",
    "CVP-UNIT-01",
    "CVP-REF-01",
    "CVP-GOLD-01",
    "CVP-BND-01",
    "CVP-INV-01",
    "CVP-NUM-01",
    "CVP-COV-01",
    "CVP-CONTRACT-01",
    "CVP-DEP-01",
    "CVP-ART-01",
    "CVP-PROD-01",
    "CVP-PROP-01",
    "CVP-META-01",
    "CVP-ROUND-01",
    "CVP-IFACE-01"
  ],
  "provenance": {
    "mode": "direct",
    "sources": [
      {
        "label": "BIPM SI Brochure (9th edition)",
        "kind": "standard",
        "reference": "Table 8 — SI prefixes (powers of 10³)",
        "url": "https://www.bipm.org/en/publications/si-brochure"
      },
      {
        "label": "NIST SI prefixes",
        "kind": "standard",
        "reference": "SI prefixes from 10⁻³⁰ to 10³⁰",
        "url": "https://www.nist.gov/pml/owm/metric-si-prefixes"
      },
      {
        "label": "UC Berkeley CS61C Course Notes — Normalized Numbers",
        "kind": "other",
        "reference": "§2.1 Scientific Notation (Base-10)",
        "url": "https://notes.cs61c.org/content/floating-point/fp-floating-point/"
      }
    ]
  },
  "controls": {
    "CVP-PROV-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "Sources present on evidence"
    },
    "CVP-MODEL-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "x = A × 10ⁿ, 1 ≤ |A| < 10 except 0; engineering n ≡ 0 (mod 3); operate ±×÷ then normalize"
    },
    "CVP-SCOPE-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "Declared CVP coverage is all four published modes (convert, normalize, engineering, operate) plus invalid-domain. Page published examples and IUT engine automated checks are separate suites."
    },
    "CVP-UNIT-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "dimensionless"
    },
    "CVP-REF-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "O1 model + O2 expected_values/numerical_behavior (same_runtime_as_iut). Operate uses reconstructed-value ULP, not convert coefficient-ULP."
    },
    "CVP-GOLD-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "4/4 legacy golden; 202/202 oracle-backed numeric"
    },
    "CVP-BND-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "4/4 CVP boundary · 5/5 legacy Evidence boundary"
    },
    "CVP-INV-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "3 Evidence illegal-input + 5/5 oracle-backed error-code (exact_error_match, not ULP)"
    },
    "CVP-NUM-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "Convert/normalize/engineering: ≤2 ULP coefficient, exact exponent. Operate: ≤2 ULP reconstructed binary64 + exact normalized exponent. Not a whole-domain guarantee beyond recorded vectors."
    },
    "CVP-COV-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "5/5 declared partitions (convert, normalize, engineering, operate, invalid-domain) · 4 legacy golden / 4 CVP boundary unique cases · 3 Evidence invalid-input (may overlap boundary)"
    },
    "CVP-CONTRACT-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "6/6 CVP contract · release-artifacts-aligned=PASS · schema-output-required-declared=PASS · schema-valid-input-executes=PASS · engine-success-output-validates-schema=PASS · schema-rejects-incomplete-input=PASS · rest-success-payload-validates-schema=PASS"
    },
    "CVP-DEP-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "engine scientific-notation; IEEE-754 binary64 (IUT/O2 share Node/V8)"
    },
    "CVP-ART-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "release_integrity.status=verified · digests: artifact_evidence_sha256=Evidence core (Trust freshness) · cvp_evidence_digest=artifacts.evidence_digest (fingerprint v2) · evidence_bundle_sha256=legacy Evidence JSON bytes · evidence_catalog_digest=attested_catalog_sha256 · production_sha256=bound production report · see artifacts.digest_registry"
    },
    "CVP-PROD-01": {
      "result": "PASS",
      "applicability": "required",
      "notes": "this calculator CURRENT · bound snapshot pass @ 2026-10-21T08:37:00.433Z · live site-wide report stale @ 2026-10-21T08:37:17.886Z (2 other capabilities) · local checks pass · attestation_id=cb614f6316a4a99e61eb83d940f937a7c264e05cb52f3e289bd091d67fdff824 · This calculator CURRENT · This calculator is not affected · Bound attestation PASS @ 2026-10-21T08:37:00.433Z · Live production status STALE (2 capabilities; 374 remain CURRENT) @ 2026-10-21T08:37:17.886Z · Public schema 2.0.1 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=2.0.1 · report output-const=pass · evidence-sha256=pass · semantic-contract=pass · capability-html-public-origin-agree=pass · cvp-manifest-public-origin-agree=pass · cvp-latest-alias-agrees=pass · cvp-immutable-manifest-fetch=pass · cvp-immutable-manifest-sha256=pass · cvp-latest-alias-matches-immutable=pass · calculator-html-cvp-projection=pass · evidence-html-cvp-projection=pass · attested_evidence_sha256=7c83e318abf41b280fd1a6c860fa53b512cf36456702de13f93c9f6aaf70ab30 · verified_at=2026-10-21T06:33:18.371Z · evidence_attested_at=2026-10-21T06:33:18.371Z · last_confirmed_current_at=2026-10-21T08:37:00.433Z · rendered_at=2026-10-21T08:37:18.196Z · binds=cvp_core_sha256",
      "check_result": "PASS",
      "production_state": "CURRENT",
      "binding_current": true
    },
    "CVP-DIM-01": {
      "result": "SKIP",
      "applicability": "not_applicable",
      "notes": "Unitless core calculator — no physical dimension algebra"
    },
    "CVP-PROP-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "5/5 property"
    },
    "CVP-META-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "2/2 metamorphic"
    },
    "CVP-ROUND-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "2/2 round-trips"
    },
    "CVP-XCAL-01": {
      "result": "SKIP",
      "applicability": "not_applicable",
      "notes": "No related calculator in the same formula family / no related-identity peers declared — control not in obligation set"
    },
    "CVP-IFACE-01": {
      "result": "PASS",
      "applicability": "applicable",
      "notes": "UI (SSR) · REST · MCP equivalent (MCP uses calc API handler). ui-ssr is query-result HTML, not a live browser session."
    },
    "CVP-ORACLE-01": {
      "result": "SKIP",
      "applicability": "higher_assurance",
      "notes": "O2 present; O3 not required this wave"
    },
    "CVP-EXP-01": {
      "result": "SKIP",
      "applicability": "optional",
      "notes": "named expert review not performed"
    }
  },
  "interfaces": {
    "compared": [
      "ui-ssr",
      "rest",
      "mcp"
    ],
    "result": "PASS",
    "notes": "UI (SSR) · REST · MCP equivalent (MCP uses calc API handler). ui-ssr is query-result HTML, not a live browser session."
  },
  "artifacts": {
    "evidence_bundle_sha256": "5aaa91820e2286c4680af4017f99445f4aa60bba6a234c6d04bc223bedb6888c",
    "evidence_digest": "f1914212ac19cf81324789e513a4b14c3de7daeb4bc8ff22139ade938af72d9b",
    "production_sha256": "7c83e318abf41b280fd1a6c860fa53b512cf36456702de13f93c9f6aaf70ab30",
    "attested_catalog_sha256": "9b96a2c8fbf62a8306adee80ae161d6b6eeb7d64addac11a3cc4670eb22d2635",
    "production_checks": [
      {
        "id": "math.scientific_notation:output-const",
        "status": "pass",
        "detail": "output const 2.0.1 vs capability 2.0.1",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      },
      {
        "id": "math.scientific_notation:evidence-sha256",
        "status": "pass",
        "detail": "73abb82b9900",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      },
      {
        "id": "math.scientific_notation:semantic-contract",
        "status": "pass",
        "detail": "9/9",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      },
      {
        "id": "math.scientific_notation:capability-html-public-origin-agree",
        "status": "pass",
        "detail": "public 2.0.1 vs origin 2.0.1",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      },
      {
        "id": "math.scientific_notation:cvp-manifest-public-origin-agree",
        "status": "pass",
        "detail": "math.scientific_notation/2.0.1/2026-10-21.scientific-complete-contract-v2/core/f1914212ac19",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z",
        "projection_compared": false
      },
      {
        "id": "math.scientific_notation:cvp-latest-alias-agrees",
        "status": "pass",
        "detail": "math.scientific_notation/2.0.1/2026-10-21.scientific-complete-contract-v2/core/f1914212ac19",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z",
        "projection_compared": false
      },
      {
        "id": "math.scientific_notation:cvp-immutable-manifest-fetch",
        "status": "pass",
        "detail": "public=200 origin=200",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      },
      {
        "id": "math.scientific_notation:cvp-immutable-manifest-sha256",
        "status": "pass",
        "detail": "f1914212ac19",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      },
      {
        "id": "math.scientific_notation:cvp-latest-alias-matches-immutable",
        "status": "pass",
        "detail": "math.scientific_notation/2.0.1/2026-10-21.scientific-complete-contract-v2/core/f1914212ac19",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z",
        "projection_compared": false
      },
      {
        "id": "math.scientific_notation:calculator-html-cvp-projection",
        "status": "pass",
        "detail": "matches Trust display",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      },
      {
        "id": "math.scientific_notation:evidence-html-cvp-projection",
        "status": "pass",
        "detail": "matches Trust display",
        "scope": "last_attestation_snapshot",
        "current": true,
        "attestation_binding_current": true,
        "attested_at": "2026-10-21T06:33:18.371Z"
      }
    ],
    "digest_registry": {
      "digest_algorithm": "sha256",
      "canonicalization": "json-sorted-keys-utf8",
      "entries": [
        {
          "name": "cvp_core_sha256",
          "field": "artifacts.cvp_core_sha256",
          "digest_scope": "cvp_verification_fingerprint_v2",
          "value": "f1914212ac19cf81324789e513a4b14c3de7daeb4bc8ff22139ade938af72d9b",
          "note": "Immutable verification core; excludes attestation/live-status and Evidence contract counts"
        },
        {
          "name": "cvp_evidence_digest",
          "field": "artifacts.evidence_digest",
          "digest_scope": "cvp_verification_fingerprint_v2",
          "value": "f1914212ac19cf81324789e513a4b14c3de7daeb4bc8ff22139ade938af72d9b",
          "note": "Alias of cvp_core_sha256 (historical field name)"
        },
        {
          "name": "artifact_evidence_sha256",
          "field": "release_integrity.digests.evidence_core_sha256",
          "digest_scope": "evidence_artifact_core",
          "value": "73abb82b9900c7ad3aa465b0214b7d118a6cb17c60f0639403d8e19223a3354f",
          "note": "Published Evidence JSON core — Trust freshness / production bind subject"
        },
        {
          "name": "evidence_catalog_digest",
          "field": "artifacts.attested_catalog_sha256",
          "digest_scope": "capability_catalog",
          "value": "9b96a2c8fbf62a8306adee80ae161d6b6eeb7d64addac11a3cc4670eb22d2635",
          "note": "Capability catalog integrity; site-wide, not per-suite fingerprint"
        }
      ]
    },
    "cvp_core_sha256": "f1914212ac19cf81324789e513a4b14c3de7daeb4bc8ff22139ade938af72d9b"
  },
  "dependencies": [
    {
      "name": "scientific-notation-engine",
      "version": "2.0.1"
    },
    {
      "name": "scientific-notation-reference-oracle",
      "version": "1.0.0"
    },
    {
      "name": "node",
      "version": "22.20.0"
    }
  ],
  "attestation": {
    "status": "CURRENT",
    "href": "/.well-known/calculatorx-production-attestation.json",
    "id": "cb614f6316a4a99e61eb83d940f937a7c264e05cb52f3e289bd091d67fdff824",
    "attested_at": "2026-10-21T06:33:18.371Z",
    "last_confirmed_current_at": "2026-10-21T08:37:00.433Z",
    "site_attestation_current": false,
    "capability_attestation_current": true,
    "bound_snapshot_status": "pass",
    "live_report_status": "stale",
    "bound_attested_at": "2026-10-21T08:37:00.433Z",
    "live_updated_at": "2026-10-21T08:37:17.886Z",
    "bound_snapshot": {
      "status": "pass",
      "attested_at": "2026-10-21T08:37:00.433Z",
      "site_stale_count": 2
    },
    "live_site_status": {
      "href": "/.well-known/calculatorx-production-attestation.json"
    },
    "bound_snapshot_site_stale_count": 2,
    "site_stale_capability_count": 2,
    "evidence_attested_at": "2026-10-21T06:33:18.371Z"
  },
  "domain_review": {
    "status": "ABSENT",
    "spec_version": "2.0.1",
    "external_third_party": false,
    "note": "Named expert review not performed"
  },
  "timestamps": {
    "verified_at": "2026-10-21T06:33:18.371Z",
    "generated_at": "2026-10-21T06:33:18.371Z",
    "rendered_at": "2026-10-21T08:37:18.196Z",
    "notes": "verified_at/generated_at mark the first publication of this cvp_core_sha256 (artifacts.evidence_digest alias) for suite verification. evidence_attested_at/attested_at is the first production bind of that core digest. last_confirmed_current_at is the latest site-wide report that still confirms CURRENT. rendered_at is this JSON serialization and is not part of cvp_core_sha256 / evidence_digest. Production attestation binds cvp_core_sha256 (binds evidence_digest). Causal order: verified_at ≤ evidence_attested_at ≤ last_confirmed_current_at. attestation.bound_snapshot.site_stale_count is the site-wide stale capability count at Manifest bind time — not a live value. Fetch attestation.live_site_status.href for the current site report."
  },
  "tests": {
    "golden": {
      "passed": 202,
      "total": 202,
      "failed": 0
    },
    "boundary": {
      "passed": 4,
      "total": 4,
      "failed": 0
    },
    "invalid": {
      "passed": 8,
      "total": 8,
      "failed": 0,
      "comparison": "exact_error_match"
    },
    "property": {
      "passed": 5,
      "total": 5,
      "failed": 0
    },
    "round_trip": {
      "passed": 2,
      "total": 2,
      "failed": 0
    },
    "metamorphic": {
      "passed": 2,
      "total": 2,
      "failed": 0
    },
    "contract": {
      "passed": 6,
      "total": 6,
      "failed": 0
    },
    "cross_interface": {
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      "total": 4,
      "failed": 0
    }
  },
  "numerical": {
    "representation": "IEEE-754 binary64 scientific normalize",
    "tolerance": {
      "type": "ulp",
      "value": 2,
      "rationale": "Convert / normalize / engineering: ≤2 ULP on the scientific coefficient; integer exponent must match exactly. Declared a priori.",
      "declared_before_evaluation": true
    },
    "max_error_observed": 0,
    "claim_scope": "Convert / normalize / engineering: ≤2 ULP on scientific coefficient, exact exponent. Operate: ≤2 ULP on reconstructed binary64 plus exact normalized exponent. Invalid domain: matching error codes (overflow / underflow / division by zero / missing). Not a whole-domain guarantee beyond recorded vectors.",
    "operate_tolerance": {
      "type": "ulp",
      "value": 2,
      "rationale": "Operate: ≤2 ULP on the reconstructed binary64 of A×10ⁿ after ±×÷, plus exact normalized exponent. This is not the convert coefficient-ULP claim.",
      "declared_before_evaluation": true
    }
  },
  "coverage": {
    "partitions": [
      {
        "id": "convert",
        "description": "Decimal / E / Unicode → scientific",
        "exercised": true,
        "case_count": 73
      },
      {
        "id": "normalize",
        "description": "Non-canonical A, exponent cross-10, zero",
        "exercised": true,
        "case_count": 42
      },
      {
        "id": "engineering",
        "description": "± exponents, n ≡ 0 (mod 3), SI hint",
        "exercised": true,
        "case_count": 49
      },
      {
        "id": "operate",
        "description": "±×÷, normalize, reconstructed binary64",
        "exercised": true,
        "case_count": 52
      },
      {
        "id": "invalid-domain",
        "description": "Illegal input, overflow / underflow, division by zero",
        "exercised": true,
        "case_count": 8
      }
    ]
  },
  "reference": {
    "items": [
      {
        "class": "O1",
        "reference_scope": "model",
        "scope": "model",
        "label": "Scientific / engineering notation and scientific arithmetic"
      },
      {
        "class": "O2",
        "reference_scope": "expected_values",
        "scope": "expected_values",
        "label": "Independent CPython Decimal/float/repr private corpus,181 seeded/boundary cases",
        "engine": {
          "name": "CPython standard-library decimal and binary64",
          "precision_bits": 53,
          "independent_of_iut": true,
          "same_runtime_as_iut": false
        }
      },
      {
        "class": "O2",
        "reference_scope": "expected_values",
        "scope": "expected_values",
        "label": "Separate-module scientific-notation oracle — convert / normalize / engineering / operate",
        "engine": {
          "name": "scientific-notation-reference",
          "precision_bits": 53,
          "independent_of_iut": true,
          "same_runtime_as_iut": true
        }
      },
      {
        "class": "O2",
        "reference_scope": "numerical_behavior",
        "scope": "numerical_behavior",
        "label": "O2 backs convert coefficient ≤2 ULP and operate reconstructed-value ≤2 ULP vs IUT",
        "engine": {
          "name": "scientific-notation-reference",
          "precision_bits": 53,
          "independent_of_iut": true,
          "same_runtime_as_iut": true
        }
      }
    ]
  },
  "links": {
    "legacy_evidence": "https://www.calculatorx.com/evidence/math.scientific_notation/2.0.1.json",
    "evidence_page": "https://www.calculatorx.com/evidence/math.scientific_notation/2.0.1",
    "calculator": "https://www.calculatorx.com/calc/math/scientific-notation",
    "schema": "https://www.calculatorx.com/developers/cvp/schema/cvp-evidence-1.0.json",
    "protocol": "https://www.calculatorx.com/developers/cvp/spec/1.0",
    "manifest": "https://www.calculatorx.com/evidence/math.scientific_notation/2.0.1.cvp.json",
    "manifest_immutable": "https://www.calculatorx.com/evidence/math.scientific_notation/2.0.1/2026-10-21.scientific-complete-contract-v2.cvp.json",
    "manifest_core": "https://www.calculatorx.com/evidence/math.scientific_notation/2.0.1/2026-10-21.scientific-complete-contract-v2.f1914212ac19.cvp.json"
  },
  "disclosure": {
    "policy": "calculatorx-public-evidence-v1",
    "full_validation": "private",
    "representation": "summary"
  }
}