{ "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": "current-divider", "version": "1.0.2", "title": "Current Divider Calculator", "formula_family": "resistive-current-divider", "capability_id": "electrical.current_divider", "verification_revision": "2026-09-14.inverse-endpoints-schema" }, "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": "current-divider", "version": "1.0.2", "uri": "https://www.calculatorx.com/evidence/electrical.current_divider/1.0.2.json", "verification_revision": "2026-09-14.inverse-endpoints-schema" }, "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-IFACE-01" ], "provenance": { "mode": "direct", "sources": [ { "label": "IEC 60050 — International Electrotechnical Vocabulary", "kind": "standard", "reference": "Kirchhoff law for nodes (IEV 131-15-09)", "url": "https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-15-09" }, { "label": "IEC 60050 — International Electrotechnical Vocabulary", "kind": "standard", "reference": "Resistance (IEV 131-12-04)", "url": "https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=131-12-04" }, { "label": "Horowitz & Hill — The Art of Electronics", "kind": "other", "reference": "3rd ed., Cambridge University Press, 2015 — Chapter 1 Foundations, current dividers" } ] }, "reference": { "items": [ { "class": "O1", "reference_scope": "model", "scope": "model", "label": "Two-branch resistive current divider" }, { "class": "O2", "reference_scope": "expected_values", "scope": "expected_values", "label": "Separate-module current-divider oracle — same V8 binary64 as IUT", "engine": { "name": "current-divider-reference", "precision_bits": 53, "independent_of_iut": true } }, { "class": "O2", "reference_scope": "numerical_behavior", "scope": "numerical_behavior", "label": "Same O2 module backs ≤2 ULP I1 comparison vs IUT", "engine": { "name": "current-divider-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": "I1=It·R2/(R1+R2); I2=It·R1/(R1+R2). Web: It+R1+R2. API solvable: It+R1+R2, R1+R2+I1/I2, It+I1+R1/R2. It+I1+I2 underdetermined." }, "CVP-SCOPE-01": { "result": "PASS", "applicability": "required", "notes": "Exactly two ideal resistive parallel branches; no additional branch or load. Currents are non-negative magnitudes." }, "CVP-UNIT-01": { "result": "PASS", "applicability": "required", "notes": "A, Ω, V" }, "CVP-REF-01": { "result": "PASS", "applicability": "required", "notes": "O1 model + O2 expected_values + O2 numerical_behavior" }, "CVP-GOLD-01": { "result": "PASS", "applicability": "required", "notes": "5/5 legacy golden; 5/5 oracle-backed numeric" }, "CVP-BND-01": { "result": "PASS", "applicability": "required", "notes": "12/12 numeric-edge Evidence + 2/2 near-singularity numeric; illegal enum/system is Invalid only" }, "CVP-INV-01": { "result": "PASS", "applicability": "required", "notes": "10 Evidence illegal-input + 10/10 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": "8/8 declared partitions (from-It-R, from-I1-R, from-I2-R, from-It-I1-R1, from-It-I1-R2, underdetermined-currents, inverse-endpoint, invalid-domain) · 5 legacy golden / 14 CVP boundary unique cases · 10 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 current-divider; 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 @ 2026-09-16T05:54:53.263Z · live site-wide report stale @ 2026-09-16T05:55:08.884Z (2 other capabilities) · local checks pass · attestation_id=2f7e4f846b3fa6a52bb63f24f386d81a9eba0a4ad663523e481dd38a9f3a92b8 · This calculator CURRENT · This calculator is not affected · Bound attestation PASS @ 2026-09-16T05:54:53.263Z · Live production status STALE (2 capabilities; 162 remain CURRENT) @ 2026-09-16T05:55:08.884Z · Public schema 1.0.2 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓ · schema_const=1.0.2 · 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=ba77209b933b0e65701d6f50e7ff9c03dd0ef4057487c5c8e2c001251273b4f9 · verified_at=2026-09-14T03:15:07.760Z · evidence_attested_at=2026-09-14T03:15:07.760Z · last_confirmed_current_at=2026-09-16T05:54:53.263Z · rendered_at=2026-09-16T05:55:08.922Z · binds=cvp_core_sha256", "check_result": "PASS", "production_state": "CURRENT", "binding_current": true }, "CVP-DIM-01": { "result": "PASS", "applicability": "applicable", "notes": "Branch current split" }, "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": "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": 5, "total": 5, "failed": 0, "case_ids": [ "g-basic", "g-from-I1", "g-from-I2", "g-from-It-I1-R1", "g-from-It-I1-R2" ] }, "boundary": { "passed": 14, "total": 14, "failed": 0, "case_ids": [ "needs-three", "zero-R", "inverse-i1-zero-R1", "inverse-i1-eq-It-R1", "inverse-zero-It-I1-R1", "inverse-i1-zero-R2", "inverse-i1-eq-It-R2", "inverse-zero-It-I1-R2", "boundary-zero-It", "boundary-extreme-ratio", "boundary-underdetermined", "boundary-split", "bnd-zero-It", "bnd-extreme-ratio" ] }, "invalid": { "passed": 20, "total": 20, "failed": 0, "case_ids": [ "needs-three", "zero-R", "inverse-i1-zero-R1", "inverse-i1-eq-It-R1", "inverse-zero-It-I1-R1", "inverse-i1-zero-R2", "inverse-i1-eq-It-R2", "inverse-zero-It-I1-R2", "boundary-underdetermined", "boundary-split", "inv-needs-three", "inv-zero-R", "inv-underdetermined", "inv-split", "inv-i1-zero-R1", "inv-i1-eq-It-R1", "inv-zero-It-I1-R1", "inv-i1-zero-R2", "inv-i1-eq-It-R2", "inv-zero-It-I1-R2" ], "comparison": "exact_error_match", "records": [ { "id": "inv-needs-three", "comparison": "exact_error_match", "expected": { "code": "NEEDS_THREE_INPUTS" }, "actual": { "code": "NEEDS_THREE_INPUTS" }, "match": true }, { "id": "inv-zero-R", "comparison": "exact_error_match", "expected": { "code": "VALUE_MUST_BE_POSITIVE" }, "actual": { "code": "VALUE_MUST_BE_POSITIVE" }, "match": true }, { "id": "inv-underdetermined", "comparison": "exact_error_match", "expected": { "code": "UNSUPPORTED_COMBINATION" }, "actual": { "code": "UNSUPPORTED_COMBINATION" }, "match": true }, { "id": "inv-split", "comparison": "exact_error_match", "expected": { "code": "CURRENT_SPLIT_INVALID" }, "actual": { "code": "CURRENT_SPLIT_INVALID" }, "match": true }, { "id": "inv-i1-zero-R1", "comparison": "exact_error_match", "expected": { "code": "CURRENT_SPLIT_INVALID" }, "actual": { "code": "CURRENT_SPLIT_INVALID" }, "match": true }, { "id": "inv-i1-eq-It-R1", "comparison": "exact_error_match", "expected": { "code": "CURRENT_SPLIT_INVALID" }, "actual": { "code": "CURRENT_SPLIT_INVALID" }, "match": true }, { "id": "inv-zero-It-I1-R1", "comparison": "exact_error_match", "expected": { "code": "UNSUPPORTED_COMBINATION" }, "actual": { "code": "UNSUPPORTED_COMBINATION" }, "match": true }, { "id": "inv-i1-zero-R2", "comparison": "exact_error_match", "expected": { "code": "CURRENT_SPLIT_INVALID" }, "actual": { "code": "CURRENT_SPLIT_INVALID" }, "match": true }, { "id": "inv-i1-eq-It-R2", "comparison": "exact_error_match", "expected": { "code": "CURRENT_SPLIT_INVALID" }, "actual": { "code": "CURRENT_SPLIT_INVALID" }, "match": true }, { "id": "inv-zero-It-I1-R2", "comparison": "exact_error_match", "expected": { "code": "UNSUPPORTED_COMBINATION" }, "actual": { "code": "UNSUPPORTED_COMBINATION" }, "match": true } ] }, "property": { "passed": 2, "total": 2, "failed": 0, "case_ids": [ "prop-kcl", "prop-ohm" ], "kind": "fixed", "claim_scope": "Enumerated identities: I1+I2=It (KCL); I1·R1=I2·R2=V (Ohm); swap R1↔R2 swaps I1↔I2 with V unchanged; scale both R by k leaves I unchanged and V→kV. Not generated/random property tests.", "definition_ids": [ "kcl-sum", "ohm-equal-v" ] }, "round_trip": { "passed": 0, "total": 0, "failed": 0, "case_ids": [] }, "metamorphic": { "passed": 3, "total": 3, "failed": 0, "case_ids": [ "meta-swap", "meta-scale-I", "meta-scale-V" ], "definition_ids": [ "swap-branches", "scale-R-current-invariant", "scale-R-voltage-linear" ] }, "contract": { "passed": 4, "total": 4, "failed": 0 }, "cross_interface": { "passed": 1, "total": 1, "failed": 0, "case_ids": [ "iface-basic" ] } }, "coverage": { "partitions": [ { "id": "from-It-R", "description": "It+R1+R2 → I1/I2 (web + API forward)", "exercised": true, "case_count": 11 }, { "id": "from-I1-R", "description": "R1+R2+I1 → It/I2", "exercised": true, "case_count": 2 }, { "id": "from-I2-R", "description": "R1+R2+I2 → It/I1", "exercised": true, "case_count": 2 }, { "id": "from-It-I1-R1", "description": "It+I1+R1 → R2/I2", "exercised": true, "case_count": 2 }, { "id": "from-It-I1-R2", "description": "It+I1+R2 → R1/I2", "exercised": true, "case_count": 2 }, { "id": "underdetermined-currents", "description": "It+I1+I2 is underdetermined", "exercised": true, "case_count": 2 }, { "id": "inverse-endpoint", "description": "It+I1+R inverse endpoints: I1=0, I1=It, or It=I1=0", "exercised": true, "case_count": 12 }, { "id": "invalid-domain", "description": "Invalid inputs", "exercised": true, "case_count": 20 } ] }, "numerical": { "representation": "IEEE-754 binary64", "tolerance": { "type": "ulp", "value": 2, "rationale": "Current divider algebra; ≤2 ULP vs separate-module O2 (same V8). Declared a priori.", "declared_before_evaluation": true }, "max_error_observed": 0, "records": [ { "id": "g-basic", "reference": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "actual": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-from-I1", "reference": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.009999999999999998, "V": 2 }, "actual": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.009999999999999998, "V": 2 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-from-I2", "reference": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.019999999999999997, "I2": 0.01, "V": 1.9999999999999998 }, "actual": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.019999999999999997, "I2": 0.01, "V": 1.9999999999999998 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-from-It-I1-R1", "reference": { "It": 0.03, "R1": 100, "R2": 200.00000000000003, "I1": 0.02, "I2": 0.009999999999999998, "V": 2 }, "actual": { "It": 0.03, "R1": 100, "R2": 200.00000000000003, "I1": 0.02, "I2": 0.009999999999999998, "V": 2 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "g-from-It-I1-R2", "reference": { "It": 0.03, "R1": 99.99999999999999, "R2": 200, "I1": 0.02, "I2": 0.009999999999999998, "V": 1.9999999999999998 }, "actual": { "It": 0.03, "R1": 99.99999999999999, "R2": 200, "I1": 0.02, "I2": 0.009999999999999998, "V": 1.9999999999999998 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "golden" }, { "id": "bnd-zero-It", "reference": { "It": 0, "R1": 100, "R2": 200, "I1": 0, "I2": 0, "V": 0 }, "actual": { "It": 0, "R1": 100, "R2": 200, "I1": 0, "I2": 0, "V": 0 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "boundary" }, { "id": "bnd-extreme-ratio", "reference": { "It": 0.03, "R1": 1, "R2": 1000000000, "I1": 0.02999999997, "I2": 2.999999997e-11, "V": 0.02999999997 }, "actual": { "It": 0.03, "R1": 1, "R2": 1000000000, "I1": 0.02999999997, "I2": 2.999999997e-11, "V": 0.02999999997 }, "error_ulp": 0, "threshold_ulp": 2, "suite": "boundary" }, { "id": "meta-swap", "reference": 1, "actual": 1, "error_ulp": 0, "threshold_ulp": 2, "suite": "metamorphic", "hops": { "base": { "reference": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "actual": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "error_ulp": 0 }, "follow": { "reference": { "It": 0.03, "R1": 200, "R2": 100, "I1": 0.01, "I2": 0.02, "V": 2 }, "actual": { "It": 0.03, "R1": 200, "R2": 100, "I1": 0.01, "I2": 0.02, "V": 2 }, "error_ulp": 0 }, "relation": { "reference": 1, "actual": 1, "error_ulp": 0 } } }, { "id": "meta-scale-I", "reference": 1, "actual": 1, "error_ulp": 0, "threshold_ulp": 2, "suite": "metamorphic", "hops": { "base": { "reference": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "actual": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "error_ulp": 0 }, "follow": { "reference": { "It": 0.03, "R1": 1000, "R2": 2000, "I1": 0.02, "I2": 0.01, "V": 20 }, "actual": { "It": 0.03, "R1": 1000, "R2": 2000, "I1": 0.02, "I2": 0.01, "V": 20 }, "error_ulp": 0 }, "relation": { "reference": 1, "actual": 1, "error_ulp": 0 } } }, { "id": "meta-scale-V", "reference": 10, "actual": 10, "error_ulp": 0, "threshold_ulp": 2, "suite": "metamorphic", "hops": { "base": { "reference": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "actual": { "It": 0.03, "R1": 100, "R2": 200, "I1": 0.02, "I2": 0.01, "V": 2 }, "error_ulp": 0 }, "follow": { "reference": { "It": 0.03, "R1": 1000, "R2": 2000, "I1": 0.02, "I2": 0.01, "V": 20 }, "actual": { "It": 0.03, "R1": 1000, "R2": 2000, "I1": 0.02, "I2": 0.01, "V": 20 }, "error_ulp": 0 }, "relation": { "reference": 10, "actual": 10, "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": "18937e3c80b2221ff884c989ab98acd4dcbfd829e25e9548d62911d6684d8978", "evidence_digest": "5836a820dfe6166196de5a38a30511f9238e10bae262ff662544d2e5d146df2a", "production_sha256": "ba77209b933b0e65701d6f50e7ff9c03dd0ef4057487c5c8e2c001251273b4f9", "attested_catalog_sha256": "f89399c8dda78af9b2d784bf34d77b786cf749392d54e5e00bd3707c3fcdd13e", "production_checks": [ { "id": "electrical.current_divider:output-const", "status": "pass", "detail": "output const 1.0.2 vs capability 1.0.2", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" }, { "id": "electrical.current_divider:evidence-sha256", "status": "pass", "detail": "7bbee0737e68", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" }, { "id": "electrical.current_divider:semantic-contract", "status": "pass", "detail": "23/23", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" }, { "id": "electrical.current_divider:capability-html-public-origin-agree", "status": "pass", "detail": "public 1.0.2 vs origin 1.0.2", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" }, { "id": "electrical.current_divider:cvp-manifest-public-origin-agree", "status": "pass", "detail": "electrical.current_divider/1.0.2/2026-09-14.inverse-endpoints-schema/engineering/5836a820dfe6", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z", "projection_compared": false }, { "id": "electrical.current_divider:cvp-latest-alias-agrees", "status": "pass", "detail": "electrical.current_divider/1.0.2/2026-09-14.inverse-endpoints-schema/engineering/5836a820dfe6", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z", "projection_compared": false }, { "id": "electrical.current_divider:cvp-immutable-manifest-fetch", "status": "pass", "detail": "public=200 origin=200", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" }, { "id": "electrical.current_divider:cvp-immutable-manifest-sha256", "status": "pass", "detail": "5836a820dfe6", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" }, { "id": "electrical.current_divider:cvp-latest-alias-matches-immutable", "status": "pass", "detail": "electrical.current_divider/1.0.2/2026-09-14.inverse-endpoints-schema/engineering/5836a820dfe6", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z", "projection_compared": false }, { "id": "electrical.current_divider:calculator-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" }, { "id": "electrical.current_divider:evidence-html-cvp-projection", "status": "pass", "detail": "matches Trust display", "scope": "last_attestation_snapshot", "current": true, "attestation_binding_current": true, "attested_at": "2026-09-14T03:15:07.760Z" } ], "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": "5836a820dfe6166196de5a38a30511f9238e10bae262ff662544d2e5d146df2a", "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": "5836a820dfe6166196de5a38a30511f9238e10bae262ff662544d2e5d146df2a", "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": "7bbee0737e685828bdb68e94c11d8132769780ba0db7fbe3e7d5adf1b08a5a33", "note": "Published Evidence JSON core — Trust freshness / production bind subject" }, { "name": "evidence_catalog_digest", "field": "artifacts.attested_catalog_sha256", "digest_scope": "capability_catalog", "value": "f89399c8dda78af9b2d784bf34d77b786cf749392d54e5e00bd3707c3fcdd13e", "note": "Capability catalog integrity; site-wide, not per-suite fingerprint" } ] }, "cvp_core_sha256": "5836a820dfe6166196de5a38a30511f9238e10bae262ff662544d2e5d146df2a" }, "dependencies": [ { "name": "current-divider-engine", "version": "1.0.2" }, { "name": "current-divider-reference-oracle", "version": "1.0.0" }, { "name": "node", "version": "20.19.2" } ], "attestation": { "status": "CURRENT", "href": "/.well-known/calculatorx-production-attestation.json", "id": "2f7e4f846b3fa6a52bb63f24f386d81a9eba0a4ad663523e481dd38a9f3a92b8", "attested_at": "2026-09-14T03:15:07.760Z", "last_confirmed_current_at": "2026-09-16T05:54:53.263Z", "site_attestation_current": false, "capability_attestation_current": true, "bound_snapshot_status": "pass", "live_report_status": "stale", "bound_attested_at": "2026-09-16T05:54:53.263Z", "live_updated_at": "2026-09-16T05:55:08.884Z", "bound_snapshot": { "status": "pass", "attested_at": "2026-09-16T05:54:53.263Z", "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": "2026-09-14T03:15:07.760Z" }, "domain_review": { "status": "ABSENT", "spec_version": "1.0.2", "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": "1.0.2", "independence": "internal", "external_third_party": false }, "timestamps": { "verified_at": "2026-09-14T03:15:07.760Z", "generated_at": "2026-09-14T03:15:07.760Z", "rendered_at": "2026-09-16T05:55:08.922Z", "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.current_divider/1.0.2.json", "evidence_page": "https://www.calculatorx.com/evidence/electrical.current_divider/1.0.2", "calculator": "https://www.calculatorx.com/calc/electric/current-divider", "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.current_divider/1.0.2.cvp.json", "manifest_immutable": "https://www.calculatorx.com/evidence/electrical.current_divider/1.0.2/2026-09-14.inverse-endpoints-schema.cvp.json", "manifest_core": "https://www.calculatorx.com/evidence/electrical.current_divider/1.0.2/2026-09-14.inverse-endpoints-schema.5836a820dfe6.cvp.json" } }