{ "protocol": { "name": "CVP", "version": "1.0.0-proposed" }, "document_status": "proposed", "calculator": { "id": "amps-to-va", "version": "1.4.3", "title": "Amps to VA Calculator", "formula_family": "ac-apparent-power", "capability_id": "electrical.apparent_power", "verification_revision": "2026-09-10.cvp-bootstrap" }, "profile": "engineering", "status": "VERIFIED", "runner": { "name": "cvp-runner", "version": "1.0.0" }, "environment": { "runtime": "node", "runtime_version": "20.19.2", "numeric_model": "IEEE-754 binary64", "os": "darwin" }, "suite": { "id": "amps-to-va", "version": "1.4.3", "uri": "https://www.calculatorx.com/evidence/electrical.apparent_power/1.4.3.json", "verification_revision": "2026-09-10.cvp-bootstrap" }, "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-DIM-01", "CVP-PROP-01", "CVP-IFACE-01" ], "provenance": { "mode": "direct", "sources": [ { "label": "IEC 60050 — International Electrotechnical Vocabulary", "kind": "standard", "reference": "Apparent power (IEV 131-11-41)", "url": "https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-11-41" }, { "label": "IEC 60050 — International Electrotechnical Vocabulary", "kind": "standard", "reference": "Power factor (IEV 131-11-46)", "url": "https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-11-46" }, { "label": "IEEE Std 1459-2025", "kind": "standard", "reference": "Definitions for electric power measurement under sinusoidal, nonsinusoidal, balanced, or unbalanced conditions", "url": "https://standards.ieee.org/ieee/1459/7578/" }, { "label": "BIPM SI Brochure (9th edition, version 4.01)", "kind": "other", "reference": "SI base and derived units for ampere, volt, and power", "url": "https://www.bipm.org/en/publications/si-brochure" } ] }, "reference": { "items": [ { "class": "O1", "reference_scope": "model", "scope": "model", "label": "AC apparent power (1φ / balanced 3φ L-L)" }, { "class": "O2", "reference_scope": "expected_values", "scope": "expected_values", "label": "Separate-module apparent-power oracle — same V8 binary64 as IUT", "engine": { "name": "apparent-power-reference", "precision_bits": 53, "independent_of_iut": true } }, { "class": "O2", "reference_scope": "numerical_behavior", "scope": "numerical_behavior", "label": "Same O2 module backs ≤2 ULP S/I comparison vs IUT", "engine": { "name": "apparent-power-reference", "precision_bits": 53, "independent_of_iut": true } } ], "notes": "Golden expected values use a separate O2 module (not IUT transcription). O2 shares Node/V8 binary64 with the IUT unless noted otherwise." }, "controls": { "CVP-PROV-01": { "result": "PASS", "applicability": "required", "notes": "Sources present on evidence" }, "CVP-MODEL-01": { "result": "PASS", "applicability": "required", "notes": "1φ S=V·I; 3φ L-L S=√3·V_LL·I; modes amps-va / va-amps / amps-kva" }, "CVP-SCOPE-01": { "result": "PASS", "applicability": "required", "notes": "PF optional for derived real power only — not applied to S" }, "CVP-UNIT-01": { "result": "PASS", "applicability": "required", "notes": "A, V_rms → VA / kVA / A" }, "CVP-REF-01": { "result": "PASS", "applicability": "required", "notes": "O1 model + O2 expected_values + O2 numerical_behavior" }, "CVP-GOLD-01": { "result": "PASS", "applicability": "required", "notes": "9/9 legacy golden; 4/4 oracle-backed numeric" }, "CVP-BND-01": { "result": "PASS", "applicability": "required", "notes": "12/12 CVP boundary · 13/13 legacy Evidence boundary" }, "CVP-INV-01": { "result": "PASS", "applicability": "required", "notes": "10 invalid-domain cases" }, "CVP-NUM-01": { "result": "PASS", "applicability": "required", "notes": "max_error_observed_ulp=0; policy declared a priori" }, "CVP-COV-01": { "result": "PASS", "applicability": "required", "notes": "5/5 declared partitions (amps-va-1phi, amps-va-3phi, va-amps, amps-kva, invalid-domain) · 9 legacy golden / 12 CVP boundary unique cases · 10 Evidence invalid-input (may overlap boundary)" }, "CVP-CONTRACT-01": { "result": "PASS", "applicability": "required", "notes": "1/1 contract checks" }, "CVP-DEP-01": { "result": "PASS", "applicability": "required", "notes": "engine amps-va; Node binary64" }, "CVP-ART-01": { "result": "PASS", "applicability": "required", "notes": "release_integrity.status=verified · evidence_digest=CVP verification fingerprint v2 (canonical inputs, expected/actual/status, policy, versions; independent of generated_at) · evidence_bundle_sha256=legacy Evidence JSON bytes · production_sha256=bound production attestation report" }, "CVP-PROD-01": { "result": "PASS", "applicability": "required", "notes": "this calculator CURRENT · bound snapshot pass @ 2026-09-11T03:26:54.926Z · live site-wide report stale @ 2026-09-11T04:05:06.535Z (2 other capabilities) · local checks pass · attestation_id=ae4ae5215330fefa78e3bb99445f1cbf0634efedf10297b52a39c925f34087f3 · This calculator CURRENT · Bound attestation PASS @ 2026-09-11T03:26:54.926Z · Live site report STALE (2 capabilities; 154 remain CURRENT) @ 2026-09-11T04:05:06.535Z · Public schema 1.4.3 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=1.4.3 · 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=308cae11608532fa029e4a397a32d0cb98e718d973f60a85914bff8e93287389 · verified_at=2026-09-10T22:30:47.343Z · evidence_attested_at=2026-09-10T16:43:41.302Z · last_confirmed_current_at=2026-09-11T03:26:54.926Z · rendered_at=2026-09-11T04:05:06.561Z · binds=evidence_digest" }, "CVP-DIM-01": { "result": "PASS", "applicability": "applicable", "notes": "Apparent power / current" }, "CVP-PROP-01": { "result": "PASS", "applicability": "applicable", "notes": "14/14 property" }, "CVP-META-01": { "result": "SKIP", "applicability": "not_applicable", "notes": "No input→output transformation vectors in pack — control not in obligation set" }, "CVP-ROUND-01": { "result": "SKIP", "applicability": "not_applicable", "notes": "No inverse / round-trip vectors in pack — control not in obligation set" }, "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": "expert_reviewed=false" } }, "tests": { "golden": { "passed": 4, "total": 4, "failed": 0, "case_ids": [ "g-1phi", "g-3phi", "g-va-amps", "g-kva" ] }, "boundary": { "passed": 12, "total": 12, "failed": 0, "case_ids": [ "boundary-volts-zero", "boundary-volts-negative", "boundary-primary-negative", "boundary-pf-80", "boundary-pf-zero", "boundary-pf-one-ok", "boundary-unknown-phase", "boundary-tiny-positive-volts", "boundary-missing-volts", "boundary-missing-primary", "boundary-overflow-va", "boundary-infinity-volts" ] }, "invalid": { "passed": 10, "total": 10, "failed": 0, "case_ids": [ "boundary-volts-zero", "boundary-volts-negative", "boundary-primary-negative", "boundary-pf-80", "boundary-unknown-mode", "boundary-unknown-phase", "boundary-missing-volts", "boundary-missing-primary", "boundary-overflow-va", "boundary-infinity-volts" ] }, "property": { "passed": 14, "total": 14, "failed": 0, "case_ids": [ "property-double-current", "property-double-voltage", "property-roundtrip-va-amps", "property-linearity-current", "property-linearity-voltage", "property-roundtrip-va-amps-va", "property-three-phase-sqrt3", "property-pf-omitted-equals-pf-one", "property-pf-zero-equals-omitted", "property-roundtrip-grid", "property-derived-pf-08", "property-derived-pf-zero", "property-derived-pf-omitted", "property-derived-zero-s" ], "kind": "fixed" }, "round_trip": { "passed": 0, "total": 0, "failed": 0, "case_ids": [] }, "metamorphic": { "passed": 0, "total": 0, "failed": 0, "case_ids": [] }, "contract": { "passed": 1, "total": 1, "failed": 0 }, "cross_interface": { "passed": 1, "total": 1, "failed": 0, "case_ids": [ "iface-1phi" ] } }, "coverage": { "partitions": [ { "id": "amps-va-1phi", "description": "Amps→VA single-phase", "exercised": true, "case_count": 20 }, { "id": "amps-va-3phi", "description": "Amps→VA three-phase", "exercised": true, "case_count": 3 }, { "id": "va-amps", "description": "VA→amps", "exercised": true, "case_count": 4 }, { "id": "amps-kva", "description": "Amps→kVA", "exercised": true, "case_count": 3 }, { "id": "invalid-domain", "description": "Invalid inputs", "exercised": true, "case_count": 10 } ] }, "numerical": { "representation": "IEEE-754 binary64", "tolerance": { "type": "ulp", "value": 2, "rationale": "AC apparent-power algebra; ≤2 ULP vs separate-module O2 (same V8). Declared a priori.", "declared_before_evaluation": true }, "max_error_observed": 0, "records": [ { "id": "g-1phi", "reference": 2760, "actual": 2760, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-3phi", "reference": 6928.203230275509, "actual": 6928.203230275509, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-va-amps", "reference": 12, "actual": 12, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-kva", "reference": 2.76, "actual": 2.76, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" } ] }, "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": "018fbc20354c5163d48ec10fa4b9b5df1fe1bb0348bc6d19154e5616ecf8a1c7", "evidence_digest": "c57787417bc3e5c3cf6a96a9012acc2281a81a82a03e0b6b4e2cc274a6dd60ba", "production_sha256": "308cae11608532fa029e4a397a32d0cb98e718d973f60a85914bff8e93287389", "attested_catalog_sha256": "6aa388524e8098a039686cf245640d8af3d123d895e9af1bb69052c231aa23ab", "production_checks": [ { "id": "electrical.apparent_power:output-const", "status": "pass", "detail": "output const 1.4.3 vs capability 1.4.3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" }, { "id": "electrical.apparent_power:evidence-sha256", "status": "pass", "detail": "546fc141dbda", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" }, { "id": "electrical.apparent_power:semantic-contract", "status": "pass", "detail": "36/36", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" }, { "id": "electrical.apparent_power:capability-html-public-origin-agree", "status": "pass", "detail": "public 1.4.3 vs origin 1.4.3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" }, { "id": "electrical.apparent_power:cvp-manifest-public-origin-agree", "status": "pass", "detail": "electrical.apparent_power/1.4.3/2026-09-10.cvp-bootstrap/engineering/c57787417bc3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z", "projection_compared": false }, { "id": "electrical.apparent_power:cvp-latest-alias-agrees", "status": "pass", "detail": "electrical.apparent_power/1.4.3/2026-09-10.cvp-bootstrap/engineering/c57787417bc3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z", "projection_compared": false }, { "id": "electrical.apparent_power:cvp-immutable-manifest-fetch", "status": "pass", "detail": "public=200 origin=200", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" }, { "id": "electrical.apparent_power:cvp-immutable-manifest-sha256", "status": "pass", "detail": "c57787417bc3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" }, { "id": "electrical.apparent_power:cvp-latest-alias-matches-immutable", "status": "pass", "detail": "electrical.apparent_power/1.4.3/2026-09-10.cvp-bootstrap/engineering/c57787417bc3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z", "projection_compared": false }, { "id": "electrical.apparent_power:calculator-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" }, { "id": "electrical.apparent_power:evidence-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T16:43:41.302Z" } ] }, "dependencies": [ { "name": "amps-va-engine", "version": "1.4.3" }, { "name": "amps-va-reference-oracle", "version": "1.0.0" }, { "name": "node", "version": "20.19.2" } ], "attestation": { "status": "CURRENT", "href": "/.well-known/calculatorx-production-attestation.json", "id": "ae4ae5215330fefa78e3bb99445f1cbf0634efedf10297b52a39c925f34087f3", "attested_at": "2026-09-10T16:43:41.302Z", "last_confirmed_current_at": "2026-09-11T03:26:54.926Z", "site_attestation_current": false, "capability_attestation_current": true, "bound_snapshot_status": "pass", "live_report_status": "stale", "bound_attested_at": "2026-09-11T03:26:54.926Z", "live_updated_at": "2026-09-11T04:05:06.535Z", "site_stale_capability_count": 2, "evidence_attested_at": "2026-09-10T16:43:41.302Z" }, "domain_review": { "status": "ABSENT", "spec_version": "1.4.3", "external_third_party": false, "independence": "internal" }, "timestamps": { "verified_at": "2026-09-10T22:30:47.343Z", "generated_at": "2026-09-10T22:30:47.343Z", "rendered_at": "2026-09-11T04:05:06.561Z", "notes": "verified_at/generated_at mark the first publication of this evidence_digest (suite verification). evidence_attested_at/attested_at is the first production bind of that 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 evidence_digest. Production attestation binds evidence_digest, not rendered_at. Causal order: verified_at ≤ evidence_attested_at ≤ last_confirmed_current_at." }, "links": { "legacy_evidence": "https://www.calculatorx.com/evidence/electrical.apparent_power/1.4.3.json", "evidence_page": "https://www.calculatorx.com/evidence/electrical.apparent_power/1.4.3", "calculator": "https://www.calculatorx.com/calc/electric/amps-to-va", "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/electrical.apparent_power/1.4.3.cvp.json", "manifest_immutable": "https://www.calculatorx.com/evidence/electrical.apparent_power/1.4.3/2026-09-10.cvp-bootstrap.cvp.json" } }