EIP-712 domain separator missing chainId

Concrete's assessment for RD-F-020 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

OZ 5.2.0 EIP712Upgradeable includes chainId in domain separator by default. Multi-chain deployment (Ethereum, Arbitrum, Berachain) makes chainId binding critical — OZ 5.2.0 handles this correctly. No finding flagged chainId omission in any audit. Green.

Sources #

GitHub
foundry.toml OZ versionfoundry.toml — OZ 5.2.0 dependency pinnedretrieved 2026-05-17

Methodology #

Determine whether the EIP-712 domain separator struct omits the `chainId` field, allowing cross-chain replay.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol concrete factor RD-F-020 score green collected_at 2026-05-17 14:36:59