ecrecover zero-address return unchecked

M^0's assessment for RD-F-019 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

MinterGateway uses SignatureChecker.isValidSignature() abstraction rather than raw ecrecover. OZ SignatureChecker handles address(0) check internally. Kirill Fedoseev H-01 (validator double-counting related to signature validation) was Fixed. No raw unguarded ecrecover found in source inspection.

Sources #

Audit
Kirill Fedoseev Independent Auditor ReportKirill Fedoseev H-01 Fixed — signature validationretrieved 2026-05-16
GitHub
MinterGateway.sol sourceMinterGateway.sol — SignatureChecker usageretrieved 2026-05-16

Methodology #

Determine whether any `ecrecover` call result is used without a `!= address(0)` guard.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol m0 factor RD-F-019 score green collected_at 2026-05-16 09:46:19