{ "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": "antenna-length", "version": "1.0.3", "title": "Antenna Length Calculator", "formula_family": "wavelength-fraction", "capability_id": "electrical.rf.antenna_length", "verification_revision": "2026-09-11.o3-cov" }, "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": "20.19.2", "numeric_model": "IEEE-754 binary64", "os": "darwin" }, "suite": { "id": "antenna-length", "version": "1.0.3", "uri": "https://www.calculatorx.com/evidence/electrical.rf.antenna_length/1.0.3.json", "verification_revision": "2026-09-11.o3-cov" }, "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 / CODATA — speed of light in vacuum", "kind": "other", "reference": "c = 299 792 458 m/s (exact)", "url": "https://physics.nist.gov/cuu/Constants/Value/c.html" }, { "label": "ARRL — Single Band Dipoles", "kind": "other", "reference": "Empirical 468/f_MHz resonant-wire length; leave extra and trim to SWR", "url": "https://www.arrl.org/single-band-dipoles" }, { "label": "ARRL — Ground-plane Antennas for 144, 222 and 440 MHz", "kind": "other", "reference": "¼-λ ground-plane antenna; radiator ≈ λ/4 over a ground-plane / radial system", "url": "https://www.arrl.org/files/file/Technology/tis/info/pdf/ab18-16.pdf" } ] }, "reference": { "items": [ { "class": "O1", "reference_scope": "model", "scope": "model", "label": "CODATA c and λ = c/f antenna element fractions" }, { "class": "O3", "reference_scope": "expected_values", "scope": "expected_values", "label": "Precomputed mpmath high-precision oracle L=(c/f)·k·frac (80 dps) rounded to nearest binary64 — not V8 division", "engine": { "name": "antenna-length-mpmath-o3", "precision_bits": 265, "independent_of_iut": true, "same_runtime_as_iut": false, "library": "mpmath 1.4.1", "mpmath_dps": 80, "generator_version": "1.0.0", "generator_sha256": "fa005ab7aaf07656b946ddb6e89dff3e140bd307c5807952fb13e52f0f6593bf", "table_sha256": "26df4b46049215ca31a8ee7718629ccad4c6c45c7b5b19bb4b9d8415a55a0c31", "seed": "20260911.antenna-o3", "source": "https://www.calculatorx.com/developers/cvp/reproduce/antenna-length-o3-tables.json", "public_table": "/developers/cvp/reproduce/antenna-length-o3-tables.json", "public_generator": "/developers/cvp/reproduce/generate-antenna-length-o3.py" } }, { "class": "O3", "reference_scope": "numerical_behavior", "scope": "numerical_behavior", "label": "Same O3 table vs IUT L_m; ≤2 ULP on tabulated vectors only, independent of Node/V8", "engine": { "name": "antenna-length-mpmath-o3", "precision_bits": 265, "independent_of_iut": true, "same_runtime_as_iut": false, "library": "mpmath 1.4.1", "mpmath_dps": 80, "generator_version": "1.0.0", "generator_sha256": "fa005ab7aaf07656b946ddb6e89dff3e140bd307c5807952fb13e52f0f6593bf", "table_sha256": "26df4b46049215ca31a8ee7718629ccad4c6c45c7b5b19bb4b9d8415a55a0c31", "seed": "20260911.antenna-o3", "source": "https://www.calculatorx.com/developers/cvp/reproduce/antenna-length-o3-tables.json", "public_table": "/developers/cvp/reproduce/antenna-length-o3-tables.json", "public_generator": "/developers/cvp/reproduce/generate-antenna-length-o3.py" } }, { "class": "O2", "reference_scope": "expected_values", "scope": "expected_values", "label": "Separate-module λ=c/f antenna length oracle — same V8 binary64 as IUT", "engine": { "name": "antenna-length-reference", "precision_bits": 53, "independent_of_iut": true, "same_runtime_as_iut": true, "source": "/developers/cvp/reproduce/antenna-length-reference.mjs" } }, { "class": "O2", "reference_scope": "numerical_behavior", "scope": "numerical_behavior", "label": "Same O2 module backs ≤2 ULP L_m comparison vs IUT (same V8; O3 covers implementation independence)", "engine": { "name": "antenna-length-reference", "precision_bits": 53, "independent_of_iut": true, "same_runtime_as_iut": true, "source": "/developers/cvp/reproduce/antenna-length-reference.mjs" } } ], "notes": "O1 is the SI/ARRL element-fraction model. O2 is a separate-module JS oracle (same V8 binary64 as IUT). O3 is an mpmath high-precision oracle (80 dps) for numeric-implementation independence. The published reproduce metadata records library + dps; it does not pin a gmpy2 backend. Adding CVP controls does not bump calculation_version 1.0.3." }, "controls": { "CVP-PROV-01": { "result": "PASS", "applicability": "required", "notes": "Sources present on evidence" }, "CVP-MODEL-01": { "result": "PASS", "applicability": "required", "notes": "L = (c/f)·k·frac with c = 299792458 m/s; k = length_factor" }, "CVP-SCOPE-01": { "result": "PASS", "applicability": "required", "notes": "Free-space / shortened wire element models; not a full EM solver" }, "CVP-UNIT-01": { "result": "PASS", "applicability": "required", "notes": "Hz, m, ft" }, "CVP-REF-01": { "result": "PASS", "applicability": "required", "notes": "O1 model + O3 expected_values + O3 numerical_behavior + O2 expected_values + O2 numerical_behavior" }, "CVP-GOLD-01": { "result": "PASS", "applicability": "required", "notes": "5/5 legacy golden; 4/4 oracle-backed numeric" }, "CVP-BND-01": { "result": "PASS", "applicability": "required", "notes": "9/9 CVP boundary · 10/10 legacy Evidence boundary" }, "CVP-INV-01": { "result": "PASS", "applicability": "required", "notes": "9 invalid-domain cases" }, "CVP-NUM-01": { "result": "PASS", "applicability": "required", "notes": "max_error_observed_ulp=1; policy declared a priori" }, "CVP-COV-01": { "result": "PASS", "applicability": "required", "notes": "5/5 declared partitions (half, quarter, wavelength, length-factor, invalid-domain) · 5 legacy golden / 9 CVP boundary unique cases · 9 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 antenna-length; 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 @ 2026-09-16T23:18:54.751Z · live site-wide report stale @ 2026-09-16T23:18:56.221Z (2 other capabilities) · local checks pass · attestation_id=bf3fe5ab59e4bbc9e50f340c6c537d3cf046a9b32473980b03131666eea4e751 · This calculator CURRENT · This calculator is not affected · Bound attestation PASS @ 2026-09-16T23:18:54.751Z · Live production status STALE (2 capabilities; 162 remain CURRENT) @ 2026-09-16T23:18:56.221Z · Public schema 1.0.3 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=1.0.3 · 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 · cvp-reproduce-manifest-agree=pass · calculator-html-cvp-projection=pass · evidence-html-cvp-projection=pass · attested_evidence_sha256=58fe84b53a8948a8ed33bf1d0f10c2dc305d423b0415cb204b41bee40e09d0f5 · verified_at=2026-09-10T23:08:47.115Z · evidence_attested_at=2026-09-10T23:08:47.115Z · last_confirmed_current_at=2026-09-16T23:18:54.751Z · rendered_at=2026-09-16T23:18:56.267Z · binds=cvp_core_sha256", "check_result": "PASS", "production_state": "CURRENT", "binding_current": true }, "CVP-DIM-01": { "result": "PASS", "applicability": "applicable", "notes": "Length from frequency via SI speed of light" }, "CVP-PROP-01": { "result": "PASS", "applicability": "applicable", "notes": "13/13 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. Error-path engine·REST·MCP 1/1 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only." }, "CVP-ORACLE-01": { "result": "PASS", "applicability": "higher_assurance", "notes": "O3 10/10 tabulated vectors vs IUT · ≤2 ULP vs O3 applies only to the published tabulated vectors (half, quarter, wavelength/full alias, k≠1, HF/VHF/UHF/LF). It is not a whole-domain antenna-model guarantee." }, "CVP-EXP-01": { "result": "SKIP", "applicability": "optional", "notes": "CalculatorX internal domain review — not CVP-EXP-01" } }, "tests": { "golden": { "passed": 4, "total": 4, "failed": 0, "case_ids": [ "g-half-c", "g-quarter", "g-full", "g-k095" ] }, "boundary": { "passed": 9, "total": 9, "failed": 0, "case_ids": [ "bad-f", "boundary-antenna", "boundary-k-zero", "boundary-k-neg", "boundary-k-gt-one", "boundary-f-neg", "boundary-f-not-number", "boundary-f-too-small", "boundary-length-factor-vs-velocity-conflict" ] }, "invalid": { "passed": 9, "total": 9, "failed": 0, "case_ids": [ "bad-f", "boundary-k-zero", "boundary-k-neg", "boundary-k-gt-one", "boundary-f-neg", "boundary-bad-mode", "boundary-f-not-number", "boundary-f-too-small", "boundary-length-factor-vs-velocity-conflict" ] }, "property": { "passed": 13, "total": 13, "failed": 0, "case_ids": [ "property-antenna", "property-half-is-S-over-2", "property-quarter-is-S-over-4", "property-quarter-is-half-over-2", "property-full-is-corrected-length-scale", "property-full-with-k-is-k-lambda0", "property-l-proportional-to-k", "property-legacy-velocity-factor-alias", "property-legacy-lambda-effective-alias", "property-f-doubles-l-halves", "property-lambda0-independent-of-k", "property-lambda0-at-f-c-is-1m", "property-results-are-finite" ], "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": 5, "total": 5, "failed": 0, "case_ids": [ "iface-half", "iface-quarter", "iface-wavelength", "iface-k095", "iface-alias-conflict" ] }, "o3": { "passed": 10, "total": 10, "failed": 0, "case_ids": [ "o3-half-c", "o3-quarter-c", "o3-wavelength-c", "o3-full-alias", "o3-k095", "o3-hf-quarter", "o3-vhf-half", "o3-uhf-wavelength", "o3-am-broadcast", "o3-2m-k095" ], "generator_id": "antenna-length-mpmath-o3", "seed": "20260911.antenna-o3", "table_sha256": "26df4b46049215ca31a8ee7718629ccad4c6c45c7b5b19bb4b9d8415a55a0c31", "max_error_ulp": 1, "reproduce": "python3 generate-antenna-length-o3.py", "table_url": "/developers/cvp/reproduce/antenna-length-o3-tables.json", "generator_url": "/developers/cvp/reproduce/generate-antenna-length-o3.py", "claim_scope": "≤2 ULP vs O3 applies only to the published tabulated vectors (half, quarter, wavelength/full alias, k≠1, HF/VHF/UHF/LF). It is not a whole-domain antenna-model guarantee.", "reproduce_url": "https://www.calculatorx.com/evidence/electrical.rf.antenna_length/reproduce" } }, "coverage": { "partitions": [ { "id": "half", "description": "Half-wave (λ/2)", "exercised": true, "case_count": 11 }, { "id": "quarter", "description": "Quarter-wave (λ/4)", "exercised": true, "case_count": 5 }, { "id": "wavelength", "description": "Corrected 1λ (k·λ₀)", "exercised": true, "case_count": 4 }, { "id": "length-factor", "description": "Non-unity length_factor / velocity_factor", "exercised": true, "case_count": 7 }, { "id": "invalid-domain", "description": "Invalid inputs", "exercised": true, "case_count": 9 } ] }, "numerical": { "representation": "IEEE-754 binary64", "claim_scope": "≤2 ULP vs O3 applies only to the published tabulated vectors (half, quarter, wavelength/full alias, k≠1, HF/VHF/UHF/LF). It is not a whole-domain antenna-model guarantee.", "tolerance": { "type": "ulp", "value": 2, "rationale": "λ=c/f elementary ops; ≤2 ULP vs separate-module O2 (same V8) and vs O3 tabulated vectors. Declared a priori.", "declared_before_evaluation": true }, "max_error_observed": 1, "records": [ { "id": "g-half-c", "reference": { "mode": "half", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "L_m": 0.5, "L_ft": 1.6404199475065615, "L_leg_m": 0.25 }, "actual": { "mode": "half", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "lambda_effective_m": 1, "lambda_m": 1, "L_m": 0.5, "L_ft": 1.6404199475065615, "L_leg_m": 0.25 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-quarter", "reference": { "mode": "quarter", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "L_m": 0.25, "L_ft": 0.8202099737532808, "L_leg_m": null }, "actual": { "mode": "quarter", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "lambda_effective_m": 1, "lambda_m": 1, "L_m": 0.25, "L_ft": 0.8202099737532808, "L_leg_m": null }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-full", "reference": { "mode": "wavelength", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "L_m": 1, "L_ft": 3.280839895013123, "L_leg_m": null }, "actual": { "mode": "wavelength", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "lambda_effective_m": 1, "lambda_m": 1, "L_m": 1, "L_ft": 3.280839895013123, "L_leg_m": null }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-k095", "reference": { "mode": "half", "f_Hz": 146000000, "length_factor": 0.95, "velocity_factor": 0.95, "lambda_free_space_m": 2.053373, "corrected_length_scale_m": 1.95070435, "L_m": 0.975352175, "L_ft": 3.1999743274278214, "L_leg_m": 0.4876760875 }, "actual": { "mode": "half", "f_Hz": 146000000, "length_factor": 0.95, "velocity_factor": 0.95, "lambda_free_space_m": 2.053373, "corrected_length_scale_m": 1.95070435, "lambda_effective_m": 1.95070435, "lambda_m": 1.95070435, "L_m": 0.975352175, "L_ft": 3.1999743274278214, "L_leg_m": 0.4876760875 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "o3-half-c", "reference": { "mode": "half", "f_Hz": 299792458, "length_factor": 1, "L_m": 0.5, "lambda_free_space_m": 1 }, "actual": { "mode": "half", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "lambda_effective_m": 1, "lambda_m": 1, "L_m": 0.5, "L_ft": 1.6404199475065615, "L_leg_m": 0.25 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-quarter-c", "reference": { "mode": "quarter", "f_Hz": 299792458, "length_factor": 1, "L_m": 0.25, "lambda_free_space_m": 1 }, "actual": { "mode": "quarter", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "lambda_effective_m": 1, "lambda_m": 1, "L_m": 0.25, "L_ft": 0.8202099737532808, "L_leg_m": null }, "error_ulp": 0, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-wavelength-c", "reference": { "mode": "wavelength", "f_Hz": 299792458, "length_factor": 1, "L_m": 1, "lambda_free_space_m": 1 }, "actual": { "mode": "wavelength", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "lambda_effective_m": 1, "lambda_m": 1, "L_m": 1, "L_ft": 3.280839895013123, "L_leg_m": null }, "error_ulp": 0, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-full-alias", "reference": { "mode": "wavelength", "f_Hz": 299792458, "length_factor": 1, "L_m": 1, "lambda_free_space_m": 1 }, "actual": { "mode": "wavelength", "f_Hz": 299792458, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 1, "corrected_length_scale_m": 1, "lambda_effective_m": 1, "lambda_m": 1, "L_m": 1, "L_ft": 3.280839895013123, "L_leg_m": null }, "error_ulp": 0, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-k095", "reference": { "mode": "half", "f_Hz": 146000000, "length_factor": 0.95, "L_m": 0.9753521749999999, "lambda_free_space_m": 2.053373 }, "actual": { "mode": "half", "f_Hz": 146000000, "length_factor": 0.95, "velocity_factor": 0.95, "lambda_free_space_m": 2.053373, "corrected_length_scale_m": 1.95070435, "lambda_effective_m": 1.95070435, "lambda_m": 1.95070435, "L_m": 0.975352175, "L_ft": 3.1999743274278214, "L_leg_m": 0.4876760875 }, "error_ulp": 1, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-hf-quarter", "reference": { "mode": "quarter", "f_Hz": 28000000, "length_factor": 0.96, "L_m": 2.5696496399999997, "lambda_free_space_m": 10.7068735 }, "actual": { "mode": "quarter", "f_Hz": 28000000, "length_factor": 0.96, "velocity_factor": 0.96, "lambda_free_space_m": 10.7068735, "corrected_length_scale_m": 10.27859856, "lambda_effective_m": 10.27859856, "lambda_m": 10.27859856, "L_m": 2.56964964, "L_ft": 8.43060905511811, "L_leg_m": null }, "error_ulp": 1, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-vhf-half", "reference": { "mode": "half", "f_Hz": 146000000, "length_factor": 1, "L_m": 1.0266865, "lambda_free_space_m": 2.053373 }, "actual": { "mode": "half", "f_Hz": 146000000, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 2.053373, "corrected_length_scale_m": 2.053373, "lambda_effective_m": 2.053373, "lambda_m": 2.053373, "L_m": 1.0266865, "L_ft": 3.368394028871391, "L_leg_m": 0.51334325 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-uhf-wavelength", "reference": { "mode": "wavelength", "f_Hz": 435000000, "length_factor": 0.95, "L_m": 0.6547191611494253, "lambda_free_space_m": 0.6891780643678161 }, "actual": { "mode": "wavelength", "f_Hz": 435000000, "length_factor": 0.95, "velocity_factor": 0.95, "lambda_free_space_m": 0.6891780643678161, "corrected_length_scale_m": 0.6547191611494253, "lambda_effective_m": 0.6547191611494253, "lambda_m": 0.6547191611494253, "L_m": 0.6547191611494253, "L_ft": 2.1480287439285606, "L_leg_m": null }, "error_ulp": 0, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-am-broadcast", "reference": { "mode": "half", "f_Hz": 1000000, "length_factor": 1, "L_m": 149.896229, "lambda_free_space_m": 299.792458 }, "actual": { "mode": "half", "f_Hz": 1000000, "length_factor": 1, "velocity_factor": 1, "lambda_free_space_m": 299.792458, "corrected_length_scale_m": 299.792458, "lambda_effective_m": 299.792458, "lambda_m": 299.792458, "L_m": 149.896229, "L_ft": 491.7855282152231, "L_leg_m": 74.9481145 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "o3" }, { "id": "o3-2m-k095", "reference": { "mode": "quarter", "f_Hz": 146000000, "length_factor": 0.95, "L_m": 0.48767608749999997, "lambda_free_space_m": 2.053373 }, "actual": { "mode": "quarter", "f_Hz": 146000000, "length_factor": 0.95, "velocity_factor": 0.95, "lambda_free_space_m": 2.053373, "corrected_length_scale_m": 1.95070435, "lambda_effective_m": 1.95070435, "lambda_m": 1.95070435, "L_m": 0.4876760875, "L_ft": 1.5999871637139107, "L_leg_m": null }, "error_ulp": 1, "threshold_ulp": 2, "suite": "o3" } ] }, "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. Error-path engine·REST·MCP 1/1 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only." }, "artifacts": { "evidence_bundle_sha256": "e1bdf0d002b29e7651b6b2e2f7b987965ad74ccbfc992fcb96aac2861fba7847", "evidence_digest": "3d9fa5324276a61030cc4998f8ac3062b6de6ac870152aa4f4bf816b628b4240", "production_sha256": "58fe84b53a8948a8ed33bf1d0f10c2dc305d423b0415cb204b41bee40e09d0f5", "attested_catalog_sha256": "006a786d7fd29244ed7da1c582af2a6072358ff25a2e07cbc8909b3ae65fb0af", "production_checks": [ { "id": "electrical.rf.antenna_length:output-const", "status": "pass", "detail": "output const 1.0.3 vs capability 1.0.3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:evidence-sha256", "status": "pass", "detail": "c32d4c47d232", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:semantic-contract", "status": "pass", "detail": "28/28", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:capability-html-public-origin-agree", "status": "pass", "detail": "public 1.0.3 vs origin 1.0.3", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:cvp-manifest-public-origin-agree", "status": "pass", "detail": "electrical.rf.antenna_length/1.0.3/2026-09-11.o3-cov/engineering/3d9fa5324276", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z", "projection_compared": false }, { "id": "electrical.rf.antenna_length:cvp-latest-alias-agrees", "status": "pass", "detail": "electrical.rf.antenna_length/1.0.3/2026-09-11.o3-cov/engineering/3d9fa5324276", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z", "projection_compared": false }, { "id": "electrical.rf.antenna_length:cvp-immutable-manifest-fetch", "status": "pass", "detail": "public=200 origin=200", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:cvp-immutable-manifest-sha256", "status": "pass", "detail": "3d9fa5324276", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:cvp-latest-alias-matches-immutable", "status": "pass", "detail": "electrical.rf.antenna_length/1.0.3/2026-09-11.o3-cov/engineering/3d9fa5324276", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z", "projection_compared": false }, { "id": "electrical.rf.antenna_length:cvp-reproduce-manifest-agree", "status": "pass", "detail": "2026-09-11.o3-cov · 26df4b460492", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:calculator-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" }, { "id": "electrical.rf.antenna_length:evidence-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-10T23:08:47.115Z" } ], "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": "3d9fa5324276a61030cc4998f8ac3062b6de6ac870152aa4f4bf816b628b4240", "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": "3d9fa5324276a61030cc4998f8ac3062b6de6ac870152aa4f4bf816b628b4240", "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": "c32d4c47d232482aefbe92168d7c7e820eb29fc6d8b755dd245de2e13ba0e068", "note": "Published Evidence JSON core — Trust freshness / production bind subject" }, { "name": "evidence_catalog_digest", "field": "artifacts.attested_catalog_sha256", "digest_scope": "capability_catalog", "value": "006a786d7fd29244ed7da1c582af2a6072358ff25a2e07cbc8909b3ae65fb0af", "note": "Capability catalog integrity; site-wide, not per-suite fingerprint" } ] }, "cvp_core_sha256": "3d9fa5324276a61030cc4998f8ac3062b6de6ac870152aa4f4bf816b628b4240" }, "dependencies": [ { "name": "antenna-length-engine", "version": "1.0.3" }, { "name": "antenna-length-reference-oracle", "version": "1.0.0" }, { "name": "antenna-length-mpmath-o3-table", "version": "antenna-length-mpmath-o3" }, { "name": "node", "version": "20.19.2" } ], "attestation": { "status": "CURRENT", "href": "/.well-known/calculatorx-production-attestation.json", "id": "bf3fe5ab59e4bbc9e50f340c6c537d3cf046a9b32473980b03131666eea4e751", "attested_at": "2026-09-10T23:08:47.115Z", "last_confirmed_current_at": "2026-09-16T23:18:54.751Z", "site_attestation_current": false, "capability_attestation_current": true, "bound_snapshot_status": "pass", "live_report_status": "stale", "bound_attested_at": "2026-09-16T23:18:54.751Z", "live_updated_at": "2026-09-16T23:18:56.221Z", "bound_snapshot": { "status": "pass", "attested_at": "2026-09-16T23:18:54.751Z", "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": "2026-09-10T23:08:47.115Z" }, "domain_review": { "status": "ABSENT", "spec_version": "1.0.3", "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": "1.0.3", "independence": "internal", "external_third_party": false }, "timestamps": { "verified_at": "2026-09-10T23:08:47.115Z", "generated_at": "2026-09-10T23:08:47.115Z", "rendered_at": "2026-09-16T23:18:56.267Z", "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.rf.antenna_length/1.0.3.json", "evidence_page": "https://www.calculatorx.com/evidence/electrical.rf.antenna_length/1.0.3", "calculator": "https://www.calculatorx.com/calc/electric/antenna-length", "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.rf.antenna_length/1.0.3.cvp.json", "manifest_immutable": "https://www.calculatorx.com/evidence/electrical.rf.antenna_length/1.0.3/2026-09-11.o3-cov.cvp.json", "reproduce": "https://www.calculatorx.com/evidence/electrical.rf.antenna_length/reproduce", "o3_table": "https://www.calculatorx.com/developers/cvp/reproduce/antenna-length-o3-tables.json", "o3_generator": "https://www.calculatorx.com/developers/cvp/reproduce/generate-antenna-length-o3.py", "manifest_core": "https://www.calculatorx.com/evidence/electrical.rf.antenna_length/1.0.3/2026-09-11.o3-cov.3d9fa5324276.cvp.json" } }