{ "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": "energy-consumption", "version": "1.4.2", "title": "Energy Consumption Calculator", "formula_family": "energy-wh", "capability_id": "electrical.energy_consumption", "verification_revision": "2026-09-13.negative-input-contract" }, "profile": "engineering", "verified_scope": "core energy calculation (W × h / 1000 → kWh)", "deferred_scope": "UI daily/month/year projections (×30 / ×365)", "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": "energy-consumption", "version": "1.4.2", "uri": "https://www.calculatorx.com/evidence/electrical.energy_consumption/1.4.2.json", "verification_revision": "2026-09-13.negative-input-contract" }, "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": "NIST Guide to the SI (SP 811)", "kind": "other", "reference": "Energy as power × time; kilowatt-hour", "url": "https://www.nist.gov/pml/special-publication-811" }, { "label": "BIPM SI Brochure (9th edition, version 4.01)", "kind": "other", "reference": "Derived unit joule and common non-SI kWh", "url": "https://www.bipm.org/en/publications/si-brochure" }, { "label": "IEC 60050 — International Electrotechnical Vocabulary", "kind": "standard", "reference": "Active energy (IEV 131-11-57)", "url": "https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-11-57" }, { "label": "IEC 60050 — International Electrotechnical Vocabulary", "kind": "standard", "reference": "Watt hour (IEV 131-11-58)", "url": "https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-11-58" } ] }, "reference": { "items": [ { "class": "O1", "reference_scope": "model", "scope": "model", "label": "Energy from power × time" }, { "class": "O2", "reference_scope": "expected_values", "scope": "expected_values", "label": "Separate-module energy-consumption oracle — same V8 binary64 as IUT", "engine": { "name": "energy-consumption-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": "energy-consumption-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": "kWh = W·hours/1000" }, "CVP-SCOPE-01": { "result": "PASS", "applicability": "required", "notes": "CVP VERIFIED covers the core energy calculation E(kWh)=W×h/1000. Daily month/year figures are UI projections (30-day month, 365-day year), not engine outputs." }, "CVP-UNIT-01": { "result": "PASS", "applicability": "required", "notes": "W, h → kWh. Inverse: P(kW)=E(kWh)/t(h); P(W)=1000×E(kWh)/t(h)." }, "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; 2/2 oracle-backed numeric" }, "CVP-BND-01": { "result": "PASS", "applicability": "required", "notes": "3/3 CVP boundary · 3/3 legacy Evidence boundary" }, "CVP-INV-01": { "result": "PASS", "applicability": "required", "notes": "3 Evidence illegal-input + 2/2 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": "3/3 declared partitions (nominal-positive, zero, invalid-domain) · 9 legacy golden / 3 CVP boundary unique cases · 3 Evidence invalid-input (may overlap boundary)" }, "CVP-CONTRACT-01": { "result": "PASS", "applicability": "required", "notes": "4/4 CVP contract" }, "CVP-DEP-01": { "result": "PASS", "applicability": "required", "notes": "engine energy; 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 @ 2026-09-14T00:43:08.797Z (2 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 (2 capabilities; 155 remain CURRENT) @ 2026-09-14T00:43:08.797Z · Public schema 1.4.2 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=1.4.2 · 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=2026-09-12T23:49:01.417Z · evidence_attested_at=2026-09-12T23:49:01.417Z · last_confirmed_current_at=2026-09-14T00:43:05.498Z · rendered_at=2026-09-14T00:43:08.837Z · binds=cvp_core_sha256", "check_result": "PASS", "production_state": "CURRENT", "binding_current": true }, "CVP-DIM-01": { "result": "PASS", "applicability": "applicable", "notes": "Energy" }, "CVP-PROP-01": { "result": "PASS", "applicability": "applicable", "notes": "4/4 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": "CalculatorX internal domain review — not CVP-EXP-01" } }, "tests": { "golden": { "passed": 2, "total": 2, "failed": 0, "case_ids": [ "g-1500", "g-9W" ] }, "boundary": { "passed": 3, "total": 3, "failed": 0, "case_ids": [ "neg-W", "neg-hours", "missing-W" ] }, "invalid": { "passed": 5, "total": 5, "failed": 0, "case_ids": [ "neg-W", "neg-hours", "missing-W", "inv-neg-W", "inv-neg-hours" ], "comparison": "exact_error_match", "records": [ { "id": "inv-neg-W", "comparison": "exact_error_match", "expected": { "code": "VALUE_MUST_BE_NON_NEGATIVE" }, "actual": { "code": "VALUE_MUST_BE_NON_NEGATIVE" }, "match": true }, { "id": "inv-neg-hours", "comparison": "exact_error_match", "expected": { "code": "VALUE_MUST_BE_NON_NEGATIVE" }, "actual": { "code": "VALUE_MUST_BE_NON_NEGATIVE" }, "match": true } ] }, "property": { "passed": 4, "total": 4, "failed": 0, "case_ids": [ "property-kwh", "property-linear-power", "property-linear-time", "property-default" ], "kind": "fixed" }, "round_trip": { "passed": 0, "total": 0, "failed": 0, "case_ids": [] }, "metamorphic": { "passed": 0, "total": 0, "failed": 0, "case_ids": [] }, "contract": { "passed": 4, "total": 4, "failed": 0 }, "cross_interface": { "passed": 2, "total": 2, "failed": 0, "case_ids": [ "iface-1500", "iface-daily" ] } }, "coverage": { "partitions": [ { "id": "nominal-positive", "description": "W>0 and hours>0 → kWh", "exercised": true, "case_count": 9 }, { "id": "zero", "description": "Zero power or zero time → 0 kWh", "exercised": true, "case_count": 2 }, { "id": "invalid-domain", "description": "Negative or missing inputs", "exercised": true, "case_count": 5 } ] }, "numerical": { "representation": "IEEE-754 binary64", "tolerance": { "type": "ulp", "value": 2, "rationale": "Energy consumption W·h/1000; ≤2 ULP vs separate-module O2 (same V8). Declared a priori.", "declared_before_evaluation": true }, "max_error_observed": 0, "records": [ { "id": "g-1500", "reference": 4.5, "actual": 4.5, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-9W", "reference": 0.072, "actual": 0.072, "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": "b32dc07133fb2dbad1fcdef0db678199bec92ef6767661ca341d60aba6e06aeb", "evidence_digest": "9f36849cd3cd986d371f74fbc0418098640f15f3bb9b7efbefa1f889c7c85dda", "production_sha256": "3c45d14ff1258b0eea59837f3942585dd6825ab0585ca7cb85b4608e08c1f590", "attested_catalog_sha256": "d7330775e814d9fe1f97af28b52db2ecba2f32e2e3e82f08076f10a72d85c01b", "production_checks": [ { "id": "electrical.energy_consumption:output-const", "status": "pass", "detail": "output const 1.4.2 vs capability 1.4.2", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" }, { "id": "electrical.energy_consumption:evidence-sha256", "status": "pass", "detail": "af2d679bfc45", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" }, { "id": "electrical.energy_consumption:semantic-contract", "status": "pass", "detail": "16/16", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" }, { "id": "electrical.energy_consumption:capability-html-public-origin-agree", "status": "pass", "detail": "public 1.4.2 vs origin 1.4.2", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" }, { "id": "electrical.energy_consumption:cvp-manifest-public-origin-agree", "status": "pass", "detail": "electrical.energy_consumption/1.4.2/2026-09-13.negative-input-contract/engineering/9f36849cd3cd", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z", "projection_compared": false }, { "id": "electrical.energy_consumption:cvp-latest-alias-agrees", "status": "pass", "detail": "electrical.energy_consumption/1.4.2/2026-09-13.negative-input-contract/engineering/9f36849cd3cd", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z", "projection_compared": false }, { "id": "electrical.energy_consumption:cvp-immutable-manifest-fetch", "status": "pass", "detail": "public=200 origin=200", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" }, { "id": "electrical.energy_consumption:cvp-immutable-manifest-sha256", "status": "pass", "detail": "9f36849cd3cd", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" }, { "id": "electrical.energy_consumption:cvp-latest-alias-matches-immutable", "status": "pass", "detail": "electrical.energy_consumption/1.4.2/2026-09-13.negative-input-contract/engineering/9f36849cd3cd", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z", "projection_compared": false }, { "id": "electrical.energy_consumption:calculator-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" }, { "id": "electrical.energy_consumption:evidence-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-12T23:49:01.417Z" } ], "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": "9f36849cd3cd986d371f74fbc0418098640f15f3bb9b7efbefa1f889c7c85dda", "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": "9f36849cd3cd986d371f74fbc0418098640f15f3bb9b7efbefa1f889c7c85dda", "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": "af2d679bfc458fdfc50a0f8f2dc9786710676212a82be62dae14cbfc2f8e376e", "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": "9f36849cd3cd986d371f74fbc0418098640f15f3bb9b7efbefa1f889c7c85dda" }, "dependencies": [ { "name": "energy-engine", "version": "1.4.2" }, { "name": "energy-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": "2026-09-12T23:49:01.417Z", "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": "2026-09-14T00:43:08.797Z", "bound_snapshot": { "status": "pass", "attested_at": "2026-09-14T00:43:05.498Z", "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": "2026-09-12T23:49:01.417Z" }, "domain_review": { "status": "ABSENT", "spec_version": "1.4.2", "external_third_party": false, "note": "Supplemental CalculatorX internal domain review — see internal_review" }, "internal_review": { "status": "PASS", "reviewer_role": "electrical-engineer", "reviewed_by": "CalculatorX electrical review", "spec_version": "1.4.2", "independence": "internal", "external_third_party": false }, "timestamps": { "verified_at": "2026-09-12T23:49:01.417Z", "generated_at": "2026-09-12T23:49:01.417Z", "rendered_at": "2026-09-14T00:43:08.837Z", "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.energy_consumption/1.4.2.json", "evidence_page": "https://www.calculatorx.com/evidence/electrical.energy_consumption/1.4.2", "calculator": "https://www.calculatorx.com/calc/electric/energy-consumption", "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.energy_consumption/1.4.2.cvp.json", "manifest_immutable": "https://www.calculatorx.com/evidence/electrical.energy_consumption/1.4.2/2026-09-13.negative-input-contract.cvp.json", "manifest_core": "https://www.calculatorx.com/evidence/electrical.energy_consumption/1.4.2/2026-09-13.negative-input-contract.9f36849cd3cd.cvp.json" } }