Run the harness
One format, three implementations
The same vectors govern the available Python, JavaScript and PHP implementations. The WordPress repository includes a reproducible PHP↔Python harness that fails on the first byte of divergence.
# reproducible cross-language conformance (from the reference repo)
$ make test # PHP lint + pytest conformance/ in an isolated venv
# or drive your own implementation against the vectors directly
$ govp-conformance run vectors.json --impl ./your-verifier
8/8 vectors · canonical bytes exact · verdicts exact — CONFORMANT
The WordPress reference plugin additionally ships these vectors as a built-in self-test, so an operator can prove — inside their own installation — that it verifies byte-for-byte like the references.