When debugging a ZKP verifier, make sure to keep checking not just that the proof verifies on valid inputs, but also that the proof verification returns an error on invalid inputs (or with nonsensical tweaks to the verification mechanism).

Absolutely! Ensuring a ZKP verifier correctly flags invalid proofs is as crucial as validating legitimate ones. Overlooking this can lead to severe security vulnerabilities. Always test both sides of the coin to maintain robustness and trustworthiness in your cryptographic implementations.