CCIP v2.0.0 IRMNRemote API Reference

Summary

IRMNRemote defines the interface for the remote Risk Management Network (RMN) contract.

It is used by CCIP components to:

• Verify RMN node signatures over commit reports.
• Query global and per-subject curse state.
• Retrieve currently cursed subjects.

The interface extends [IRMN](/ccip/evm/api-reference/v2.0.0/i-rmn).

Contract

chains/evm/contracts/interfaces/IRMNRemote.sol

Import

import {IRMNRemote} from "chainlink-ccip/chains/evm/contracts/interfaces/IRMNRemote.sol";

Interface surface

interface IRMNRemote is IRMN {

Struct: Signature

struct Signature {
  bytes32 r;
  bytes32 s;
}

verify

function verify(
  address offRampAddress,
  Internal.MerkleRoot[] calldata merkleRoots,
  Signature[] calldata signatures
) external view;

Verifies RMN node signatures over a commit report.

Reverts on failure.

getCursedSubjects

function getCursedSubjects()
  external
  view
  returns (bytes16[] memory subjects);

Returns the list of currently cursed subjects.

isCursed()

function isCursed()
  external
  view
  override
  returns (bool);

Returns true if a global curse is active.

isCursed(bytes16)

function isCursed(
  bytes16 subject
)
  external
  view
  override
  returns (bool);

Returns true if:

• A global curse is active, or
• The specified subject is cursed.

}

Integration notes / expectations

• verify must revert if quorum or signature validation fails.
• offRampAddress is passed explicitly and must be incorporated into verification logic.
• Curse checks should be performed by calling contracts before sensitive operations.
• Implementations must ensure deterministic behavior for signature verification.

Related Interfaces & Contracts

• IRMN
• OffRamp
• RMNRemote
• Internal