Bridge binds message to srcChainId
M^0's assessment for RD-F-152 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
srcChainId binding confirmed in Portal.sol source: messages are digested with TransceiverStructs.nttManagerMessageDigest(chainId, message_), binding the source chain ID to each message. Prevents cross-chain replay where a message from chain A is replayed as valid on chain B.
Sources #
- GitHubPortal.sol sourcem0-foundation/m-portal main/src/Portal.sol — chainId parameter in nttManagerMessageDigest() computationretrieved 2026-05-16
Methodology #
Determine whether the bridge message struct includes `srcChainId` and the verifier enforces per-chain separation.
See the full factor methodology and distribution across all protocols →
rubric_version v1.7.0 protocol m0 factor RD-F-152 score green collected_at 2026-05-16 09:46:19