{ "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": "ev-to-volts", "version": "1.3.0", "title": "eV to Volts Calculator", "formula_family": "energy-potential-qV", "capability_id": "electrical.ev_voltage", "verification_revision": "2026-09-14.si-exact-e-zero-charge" }, "profile": "engineering", "status": "VERIFIED", "verification_status": "VERIFIED", "production_freshness": "CURRENT", "overall_trust": "VERIFIED", "runner": { "name": "cvp-runner", "version": "1.0.0" }, "environment": { "runtime": "node", "runtime_version": "22.23.2", "numeric_model": "IEEE-754 binary64", "os": "linux" }, "suite": { "id": "ev-to-volts", "version": "1.3.0", "uri": "https://www.calculatorx.com/evidence/electrical.ev_voltage/1.3.0.json", "verification_revision": "2026-09-14.si-exact-e-zero-charge" }, "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-META-01", "CVP-ROUND-01", "CVP-IFACE-01" ], "provenance": { "mode": "direct", "sources": [ { "label": "BIPM SI Brochure, 9th edition", "kind": "standard", "reference": "SI defining constants — elementary charge e = 1.602176634×10⁻¹⁹ C exactly", "url": "https://www.bipm.org/en/publications/si-brochure" }, { "label": "BIPM SI base unit — ampere", "kind": "standard", "reference": "The ampere is defined by taking the fixed numerical value of the elementary charge e", "url": "https://www.bipm.org/en/si-base-units/ampere" }, { "label": "NIST Guide to the SI (SP 811)", "kind": "other", "reference": "Electronvolt as a non-SI energy unit accepted for use with SI", "url": "https://www.nist.gov/pml/special-publication-811" } ] }, "reference": { "items": [ { "class": "O1", "reference_scope": "model", "scope": "model", "label": "Electrostatic energy–potential relation E = qV (charge magnitude)" }, { "class": "O2", "reference_scope": "expected_values", "scope": "expected_values", "label": "Separate-module ev-voltage-reference oracle — same V8 binary64 as IUT", "engine": { "name": "ev-voltage-reference", "precision_bits": 53, "independent_of_iut": true } }, { "class": "O2", "reference_scope": "numerical_behavior", "scope": "numerical_behavior", "label": "Same O2 module backs ≤2 ULP scalar comparison vs IUT", "engine": { "name": "ev-voltage-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": "ΔE = qΔV with charge magnitude. V = E(eV)/Q(e); V = E(eV)·e/Q(C); reverse products. Q=0 when solving for V is ZERO_CHARGE." }, "CVP-SCOPE-01": { "result": "PASS", "applicability": "required", "notes": "Charge is magnitude |Q|; electron (−e) vs proton (+e) sign is not modeled. Not a pure eV↔V unit conversion." }, "CVP-UNIT-01": { "result": "PASS", "applicability": "required", "notes": "eV, V, e, C" }, "CVP-REF-01": { "result": "PASS", "applicability": "required", "notes": "O1 model + O2 expected_values + O2 numerical_behavior" }, "CVP-GOLD-01": { "result": "PASS", "applicability": "required", "notes": "12/12 legacy golden; 6/6 oracle-backed numeric" }, "CVP-BND-01": { "result": "PASS", "applicability": "required", "notes": "5/5 numeric-edge Evidence + 3/3 near-singularity numeric; illegal enum/system is Invalid only" }, "CVP-INV-01": { "result": "PASS", "applicability": "required", "notes": "5 Evidence illegal-input + 6/6 oracle-backed error-code (exact_error_match, not ULP)" }, "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 (ev-v-e, ev-v-c, v-ev-e, v-ev-c, invalid-domain) · 12 legacy golden / 8 CVP boundary unique cases · 5 Evidence invalid-input (may overlap boundary)" }, "CVP-CONTRACT-01": { "result": "PASS", "applicability": "required", "notes": "3/3 CVP contract" }, "CVP-DEP-01": { "result": "PASS", "applicability": "required", "notes": "engine ev-voltage; Node binary64" }, "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 @ 2026-09-14T00:43:05.498Z · live site-wide report stale @ 2026-09-14T00:43:08.601Z (3 other capabilities) · local checks pass · attestation_id=1fdd351e49d9a9103d52e8d4d216269454fafffce59ccada2570a57ac43a6b27 · This calculator CURRENT · This calculator is not affected · Bound attestation PASS @ 2026-09-14T00:43:05.498Z · Live production status STALE (3 capabilities; 154 remain CURRENT) @ 2026-09-14T00:43:08.601Z · Public schema 1.3.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=1.3.0 · 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=3c45d14ff1258b0eea59837f3942585dd6825ab0585ca7cb85b4608e08c1f590 · verified_at=2026-09-13T22:27:04.327Z · evidence_attested_at=2026-09-13T22:27:04.327Z · last_confirmed_current_at=2026-09-14T00:43:05.498Z · rendered_at=2026-09-14T00:43:08.660Z · binds=cvp_core_sha256", "check_result": "PASS", "production_state": "CURRENT", "binding_current": true }, "CVP-DIM-01": { "result": "PASS", "applicability": "applicable", "notes": "Energy–potential via charge" }, "CVP-PROP-01": { "result": "PASS", "applicability": "applicable", "notes": "2/2 property · enumerated fixed assertions (not generated; no seed)" }, "CVP-META-01": { "result": "PASS", "applicability": "applicable", "notes": "3/3 metamorphic" }, "CVP-ROUND-01": { "result": "PASS", "applicability": "applicable", "notes": "1/1 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" } }, "tests": { "golden": { "passed": 6, "total": 6, "failed": 0, "case_ids": [ "g-25-10e", "g-1eV-1e", "g-coulomb", "g-v-ev-e", "g-v-ev-c", "g-semantic" ] }, "boundary": { "passed": 8, "total": 8, "failed": 0, "case_ids": [ "zero-Q-hard", "zero-over-zero", "boundary-zero-Q-coulomb", "boundary-neg-Q", "boundary-signed-convention", "bnd-zero-E", "bnd-zero-V-rev", "bnd-zero-Q-rev" ] }, "invalid": { "passed": 11, "total": 11, "failed": 0, "case_ids": [ "zero-Q-hard", "zero-over-zero", "boundary-zero-Q-coulomb", "boundary-neg-Q", "boundary-signed-convention", "inv-zero-Q", "inv-0-over-0", "inv-zero-Q-C", "inv-neg-Q", "inv-signed", "inv-mode" ], "comparison": "exact_error_match", "records": [ { "id": "inv-zero-Q", "comparison": "exact_error_match", "expected": { "code": "ZERO_CHARGE" }, "actual": { "code": "ZERO_CHARGE" }, "match": true }, { "id": "inv-0-over-0", "comparison": "exact_error_match", "expected": { "code": "ZERO_CHARGE" }, "actual": { "code": "ZERO_CHARGE" }, "match": true }, { "id": "inv-zero-Q-C", "comparison": "exact_error_match", "expected": { "code": "ZERO_CHARGE" }, "actual": { "code": "ZERO_CHARGE" }, "match": true }, { "id": "inv-neg-Q", "comparison": "exact_error_match", "expected": { "code": "VALUE_MUST_BE_NON_NEGATIVE" }, "actual": { "code": "VALUE_MUST_BE_NON_NEGATIVE" }, "match": true }, { "id": "inv-signed", "comparison": "exact_error_match", "expected": { "code": "UNSUPPORTED_CHARGE_CONVENTION" }, "actual": { "code": "UNSUPPORTED_CHARGE_CONVENTION" }, "match": true }, { "id": "inv-mode", "comparison": "exact_error_match", "expected": { "code": "INVALID_MODE" }, "actual": { "code": "INVALID_MODE" }, "match": true } ] }, "property": { "passed": 2, "total": 2, "failed": 0, "case_ids": [ "prop-linear-E", "prop-e-C-equiv" ], "kind": "fixed", "claim_scope": "Enumerated identities: V linear in E; V inverse in Q; e-unit vs coulomb equivalence at Q=e; round-trip E→V→E. Not generated/random property tests.", "definition_ids": [ "V-linear-in-E", "unit-cross-e-vs-C" ] }, "round_trip": { "passed": 1, "total": 1, "failed": 0, "case_ids": [ "rt-e-units" ] }, "metamorphic": { "passed": 3, "total": 3, "failed": 0, "case_ids": [ "meta-scale-Q", "meta-scale-E", "meta-e-vs-C" ], "definition_ids": [ "V-inverse-in-Q", "V-linear-in-E", "e-unit-coulomb-equivalence" ] }, "contract": { "passed": 3, "total": 3, "failed": 0 }, "cross_interface": { "passed": 3, "total": 3, "failed": 0, "case_ids": [ "iface-25-10e", "iface-coulomb", "iface-reverse" ] } }, "coverage": { "partitions": [ { "id": "ev-v-e", "description": "eV→V elementary-charge units", "exercised": true, "case_count": 19 }, { "id": "ev-v-c", "description": "eV→V coulombs", "exercised": true, "case_count": 4 }, { "id": "v-ev-e", "description": "V→eV elementary-charge units", "exercised": true, "case_count": 6 }, { "id": "v-ev-c", "description": "V→eV coulombs", "exercised": true, "case_count": 2 }, { "id": "invalid-domain", "description": "Invalid inputs", "exercised": true, "case_count": 11 } ] }, "numerical": { "representation": "IEEE-754 binary64", "tolerance": { "type": "ulp", "value": 2, "rationale": "E = qV with exact SI e = 1.602176634e-19 C; ≤2 ULP vs separate-module O2 (same V8). Declared a priori.", "declared_before_evaluation": true }, "max_error_observed": 0, "records": [ { "id": "g-25-10e", "reference": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-1eV-1e", "reference": { "value": 1, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 1, "voltage_V": 1, "charge_value": 1, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 1, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 1, "voltage_V": 1, "charge_value": 1, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-coulomb", "reference": { "value": 4.005441585e-19, "unit": "V", "mode": "ev-v-c", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 4.005441585e-19, "charge_value": 10, "charge_unit": "coulomb", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 4.005441585e-19, "unit": "V", "mode": "ev-v-c", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 4.005441585e-19, "charge_value": 10, "charge_unit": "coulomb", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-v-ev-e", "reference": { "value": 25, "unit": "eV", "mode": "v-ev-e", "direction": "voltage_to_energy", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 25, "unit": "eV", "mode": "v-ev-e", "direction": "voltage_to_energy", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-v-ev-c", "reference": { "value": 1, "unit": "eV", "mode": "v-ev-c", "direction": "voltage_to_energy", "energy_eV": 1, "voltage_V": 1, "charge_value": 1.602176634e-19, "charge_unit": "coulomb", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 1, "unit": "eV", "mode": "v-ev-c", "direction": "voltage_to_energy", "energy_eV": 1, "voltage_V": 1, "charge_value": 1.602176634e-19, "charge_unit": "coulomb", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-semantic", "reference": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "bnd-zero-E", "reference": { "value": 0, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 0, "voltage_V": 0, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 0, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 0, "voltage_V": 0, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "boundary" }, { "id": "bnd-zero-V-rev", "reference": { "value": 0, "unit": "eV", "mode": "v-ev-e", "direction": "voltage_to_energy", "energy_eV": 0, "voltage_V": 0, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 0, "unit": "eV", "mode": "v-ev-e", "direction": "voltage_to_energy", "energy_eV": 0, "voltage_V": 0, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "boundary" }, { "id": "bnd-zero-Q-rev", "reference": { "value": 0, "unit": "eV", "mode": "v-ev-e", "direction": "voltage_to_energy", "energy_eV": 0, "voltage_V": 2.5, "charge_value": 0, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 0, "unit": "eV", "mode": "v-ev-e", "direction": "voltage_to_energy", "energy_eV": 0, "voltage_V": 2.5, "charge_value": 0, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "boundary" }, { "id": "rt-e-units", "reference": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "round-trip", "hops": { "forward": { "reference": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 }, "reverse": { "reference": 25, "actual": { "value": 25, "unit": "eV", "mode": "v-ev-e", "direction": "voltage_to_energy", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 } } }, { "id": "meta-scale-Q", "reference": 0.5, "actual": 0.5, "error_ulp": 0, "threshold_ulp": 2, "suite": "metamorphic", "hops": { "base": { "reference": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 }, "follow": { "reference": { "value": 1.25, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 1.25, "charge_value": 20, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 1.25, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 1.25, "charge_value": 20, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 }, "relation": { "reference": 0.5, "actual": 0.5, "error_ulp": 0 } } }, { "id": "meta-scale-E", "reference": 2, "actual": 2, "error_ulp": 0, "threshold_ulp": 2, "suite": "metamorphic", "hops": { "base": { "reference": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 2.5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 25, "voltage_V": 2.5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 }, "follow": { "reference": { "value": 5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 50, "voltage_V": 5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 5, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 50, "voltage_V": 5, "charge_value": 10, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 }, "relation": { "reference": 2, "actual": 2, "error_ulp": 0 } } }, { "id": "meta-e-vs-C", "reference": 1, "actual": 1, "error_ulp": 0, "threshold_ulp": 2, "suite": "metamorphic", "hops": { "base": { "reference": { "value": 1, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 1, "voltage_V": 1, "charge_value": 1, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 1, "unit": "V", "mode": "ev-v-e", "direction": "energy_to_voltage", "energy_eV": 1, "voltage_V": 1, "charge_value": 1, "charge_unit": "elementary_charge", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 }, "follow": { "reference": { "value": 1, "unit": "V", "mode": "ev-v-c", "direction": "energy_to_voltage", "energy_eV": 1, "voltage_V": 1, "charge_value": 1.602176634e-19, "charge_unit": "coulomb", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "actual": { "value": 1, "unit": "V", "mode": "ev-v-c", "direction": "energy_to_voltage", "energy_eV": 1, "voltage_V": 1, "charge_value": 1.602176634e-19, "charge_unit": "coulomb", "charge_convention": "magnitude", "elementary_charge_C": 1.602176634e-19 }, "error_ulp": 0 }, "relation": { "reference": 1, "actual": 1, "error_ulp": 0 } } } ] }, "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": "a3b62fede0409880a5ea5ce914edb9f8f9d179b6b622b77714f1ce4ec6963586", "evidence_digest": "99c55c4d80291259076192aad310c6863f7a9e2f8fcb0666bff96364d174d7b3", "production_sha256": "3c45d14ff1258b0eea59837f3942585dd6825ab0585ca7cb85b4608e08c1f590", "attested_catalog_sha256": "d7330775e814d9fe1f97af28b52db2ecba2f32e2e3e82f08076f10a72d85c01b", "production_checks": [ { "id": "electrical.ev_voltage:output-const", "status": "pass", "detail": "output const 1.3.0 vs capability 1.3.0", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" }, { "id": "electrical.ev_voltage:evidence-sha256", "status": "pass", "detail": "10ff7813119c", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" }, { "id": "electrical.ev_voltage:semantic-contract", "status": "pass", "detail": "21/21", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" }, { "id": "electrical.ev_voltage:capability-html-public-origin-agree", "status": "pass", "detail": "public 1.3.0 vs origin 1.3.0", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" }, { "id": "electrical.ev_voltage:cvp-manifest-public-origin-agree", "status": "pass", "detail": "electrical.ev_voltage/1.3.0/2026-09-14.si-exact-e-zero-charge/engineering/99c55c4d8029", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z", "projection_compared": false }, { "id": "electrical.ev_voltage:cvp-latest-alias-agrees", "status": "pass", "detail": "electrical.ev_voltage/1.3.0/2026-09-14.si-exact-e-zero-charge/engineering/99c55c4d8029", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z", "projection_compared": false }, { "id": "electrical.ev_voltage:cvp-immutable-manifest-fetch", "status": "pass", "detail": "public=200 origin=200", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" }, { "id": "electrical.ev_voltage:cvp-immutable-manifest-sha256", "status": "pass", "detail": "99c55c4d8029", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" }, { "id": "electrical.ev_voltage:cvp-latest-alias-matches-immutable", "status": "pass", "detail": "electrical.ev_voltage/1.3.0/2026-09-14.si-exact-e-zero-charge/engineering/99c55c4d8029", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z", "projection_compared": false }, { "id": "electrical.ev_voltage:calculator-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" }, { "id": "electrical.ev_voltage:evidence-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-13T22:27:04.327Z" } ], "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": "99c55c4d80291259076192aad310c6863f7a9e2f8fcb0666bff96364d174d7b3", "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": "99c55c4d80291259076192aad310c6863f7a9e2f8fcb0666bff96364d174d7b3", "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": "10ff7813119c6f491e88f112e9cac1c6e7f22625952e7a86c79c506e3bc0c56a", "note": "Published Evidence JSON core — Trust freshness / production bind subject" }, { "name": "evidence_catalog_digest", "field": "artifacts.attested_catalog_sha256", "digest_scope": "capability_catalog", "value": "d7330775e814d9fe1f97af28b52db2ecba2f32e2e3e82f08076f10a72d85c01b", "note": "Capability catalog integrity; site-wide, not per-suite fingerprint" } ] }, "cvp_core_sha256": "99c55c4d80291259076192aad310c6863f7a9e2f8fcb0666bff96364d174d7b3" }, "dependencies": [ { "name": "ev-voltage-engine", "version": "1.3.0" }, { "name": "ev-voltage-reference-oracle", "version": "1.0.0" }, { "name": "node", "version": "22.23.2" } ], "attestation": { "status": "CURRENT", "href": "/.well-known/calculatorx-production-attestation.json", "id": "1fdd351e49d9a9103d52e8d4d216269454fafffce59ccada2570a57ac43a6b27", "attested_at": "2026-09-13T22:27:04.327Z", "last_confirmed_current_at": "2026-09-14T00:43:05.498Z", "site_attestation_current": false, "capability_attestation_current": true, "bound_snapshot_status": "pass", "live_report_status": "stale", "bound_attested_at": "2026-09-14T00:43:05.498Z", "live_updated_at": "2026-09-14T00:43:08.601Z", "bound_snapshot": { "status": "pass", "attested_at": "2026-09-14T00:43:05.498Z", "site_stale_count": 3 }, "live_site_status": { "href": "/.well-known/calculatorx-production-attestation.json" }, "bound_snapshot_site_stale_count": 3, "site_stale_capability_count": 3, "evidence_attested_at": "2026-09-13T22:27:04.327Z" }, "domain_review": { "status": "ABSENT", "spec_version": "1.3.0", "external_third_party": false, "note": "Named expert review not performed" }, "timestamps": { "verified_at": "2026-09-13T22:27:04.327Z", "generated_at": "2026-09-13T22:27:04.327Z", "rendered_at": "2026-09-14T00:43:08.660Z", "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." }, "links": { "legacy_evidence": "https://www.calculatorx.com/evidence/electrical.ev_voltage/1.3.0.json", "evidence_page": "https://www.calculatorx.com/evidence/electrical.ev_voltage/1.3.0", "calculator": "https://www.calculatorx.com/calc/electric/ev-to-volts", "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.ev_voltage/1.3.0.cvp.json", "manifest_immutable": "https://www.calculatorx.com/evidence/electrical.ev_voltage/1.3.0/2026-09-14.si-exact-e-zero-charge.cvp.json", "manifest_core": "https://www.calculatorx.com/evidence/electrical.ev_voltage/1.3.0/2026-09-14.si-exact-e-zero-charge.99c55c4d8029.cvp.json" } }