BridgeServiceManager

Inherits: ECDSAServiceManagerBase, Vault

Manages bridge operations and attestation validations

Extends ECDSAServiceManagerBase and Vault for bridging and staking functionality

State Variables

operatorResponses

Tracks bridge requests that this operator has responded to once to avoid duplications

Double attestations would technically be valid and allow operators to recursively call until funds are released

mapping(address => mapping(uint256 => bool)) public operatorResponses;

bridgeRequestWeights

Tracks the total operator weight attested to a bridge request

Helpful for determining when enough attestations have been collected to release funds.

mapping(uint256 => uint256) public bridgeRequestWeights;

Functions

constructor

Initializes the contract with the necessary addresses and parameters

constructor(
    address _avsDirectory,
    address _stakeRegistry,
    address _rewardsCoordinator,
    address _delegationManager,
    uint256 _crankGasCost,
    uint256 _AVSReward,
    uint256 _bridgeFee,
    string memory _name,
    string memory _version
)
    ECDSAServiceManagerBase(_avsDirectory, _stakeRegistry, _rewardsCoordinator, _delegationManager)
    Vault(_crankGasCost, _AVSReward, _bridgeFee, _name, _version);

Parameters

Name	Type	Description
`_avsDirectory`	`address`	The address of the AVS directory contract, managing AVS-related data for registered operators
`_stakeRegistry`	`address`	The address of the stake registry contract, managing registration and stake recording
`_rewardsCoordinator`	`address`	The address of the rewards coordinator contract, handling rewards distributions
`_delegationManager`	`address`	The address of the delegation manager contract, managing staker delegations to operators
`_crankGasCost`	`uint256`	The estimated gas cost for calling release funds, used to calculate rebate and incentivize users to call
`_AVSReward`	`uint256`	The total reward for AVS attestation
`_bridgeFee`	`uint256`	The total fee charged to the user for bridging
`_name`	`string`	The name of the contract, used for EIP-712 domain construction
`_version`	`string`	The version of the contract, used for EIP-712 domain construction

onlyOperator

Ensures that only registered operators can call the function

modifier onlyOperator();

rewardAttestation

Rewards the operator for providing a valid attestation

Placeholder for actual AVS reward distribution pending Eigen M2 implementation

function rewardAttestation(address operator) internal;

Parameters

Name	Type	Description
`operator`	`address`	The address of the operator to be rewarded

publishAttestation

Publishes an attestation for a bridge request

function publishAttestation(bytes memory attestation, uint256 _bridgeRequestId) public nonReentrant onlyOperator;

Parameters

Name	Type	Description
`attestation`	`bytes`	The signed attestation
`_bridgeRequestId`	`uint256`	The ID of the bridge request

slashMaliciousAttestor

Slashes a malicious attestor's stake

Placeholder for slashing logic pending Eigen implementations

function slashMaliciousAttestor(address operator, uint256 penalty) internal;

Parameters

Name	Type	Description
`operator`	`address`	The address of the operator to be slashed
`penalty`	`uint256`	The penalty amount to be slashed

challengeAttestation

Challenges a potentially fraudulent attestation

function challengeAttestation(
    bytes memory fraudulentSignature,
    Structs.BridgeRequestData memory fraudulentBridgeRequest
) public nonReentrant;

Parameters

Name	Type	Description
`fraudulentSignature`	`bytes`	The signature of the fraudulent attestation
`fraudulentBridgeRequest`	`Structs.BridgeRequestData`	The data of the fraudulent bridge request

payoutCrankGasCost

Payouts the crank gas cost to the caller

function payoutCrankGasCost() internal;

_releaseFunds

Releases funds to the destination address

function _releaseFunds(bytes memory data) public override nonReentrant;

Parameters

Name	Type	Description
`data`	`bytes`	The bridge request data and signatures

releaseFunds

Releases funds to the destination address with typed data for ABI construction

function releaseFunds(bytes[] memory signatures, Structs.BridgeRequestData memory data) public nonReentrant;

Parameters

Name	Type	Description
`signatures`	`bytes[]`	The signatures of the operators attesting to the bridge request
`data`	`Structs.BridgeRequestData`	The bridge request data

operatorHasMinimumWeight

Checks if the operator has the minimum required weight

function operatorHasMinimumWeight(address operator) public view returns (bool);

Parameters

Name	Type	Description
`operator`	`address`	The address of the operator

Returns

Name	Type	Description
`<none>`	`bool`	True if the operator has the minimum weight, false otherwise

getOperatorWeight

Gets the weight of an operator

function getOperatorWeight(address operator) public view returns (uint256);

Parameters

Name	Type	Description
`operator`	`address`	The address of the operator

Returns

Name	Type	Description
`<none>`	`uint256`	The weight of the operator

receive

Fallback function to receive ether

receive() external payable;

Eigen-Bridge