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Public evidence

electrical.hpf

Machine-checked verification for calculation version 1.0.0 · tier internally_reviewed

Open calculator API Capability Download JSON CVP Manifest MCP Review policy

CVP status

CVP VERIFIED · CVP protocol 1.0.0-proposed · Engineering assurance

First-order RC HPF only

Declared partition coverage
PASS · 3/3 declared partitions (solve-rc, with-f, invalid-domain)
Versions
Calculation 1.0.0 · CVP protocol 1.0.0-proposed · Evidence 2026-10-28.meta-metrics-v2
Verification revision
2026-10-28.meta-metrics-v2 · 2/2 property · digest 1a252e99d3b9

Verification

Legacy regression suite: 6/6 calculation tests · Production surface contract 5/5

Three distinct suites: educational examples on the calculator page, this legacy regression count (6/6 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

    This calculator CURRENT · Public schema 1.0.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-10-28.meta-metrics-v2. Calculation version 1.0.0. CVP 1.0.0-proposed. 2/2 golden · 2/2 CVP boundary · 2/2 invalid · 2/2 property · 2/2 metamorphic · 1/1 cross-interface · 5/5 CVP contract. digest 1a252e99d3b9.

  • Golden (oracle-backed) 2 / 2
  • CVP boundary 2 / 2
  • Invalid input 2 / 2
  • Property 2 / 2
  • Metamorphic 2 / 2
  • Cross-interface 1 / 1
  • CVP contract 5 / 5
  • Interfaces PASS · UI (SSR) / REST / MCP
  • Interface claim ui-ssr is query-result HTML, not a live browser session.
  • Assurance Engineering
  • release artifacts aligned PASS
  • schema output required declared PASS
  • schema valid input executes PASS
  • engine success output validates schema PASS
  • rest success payload validates schema PASS

Fingerprint sha256:a1147cb998925eb7f4fc5f8905f6b8cb90b49e61a59ee9f2c8be79940949899f

Input schema sha256:7f2076d3e9b0806aab39a5f00d8f1d6c80877b69d0d2921501352c29870b1173 · Output schema sha256:03d8636997fb94a62fa5a13d0925ce01f3c37d297e5ac7f1eec76e092712925b · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Build & scope

Engine identity and declared limitations.

Tool
hpf
Engine
hpf
Engine build
2026-09-10
Evidence core
2026-09-06T13:16:40.891Z
Rendered
2026-11-10T05:18:41.745Z
Last reviewed
2026-08-08

Limitations

  • First-order RC only

Sources

Standards and references supporting this tool specification. Methods are listed separately — they are algorithms, not bibliographic sources.

Verification disclosure

Aggregate outcomes, scope and artifact commitments are public. Complete test inputs, expected values, execution records and oracle infrastructure are retained privately. This summary does not independently reproduce the full verification run.