Bridge Multi-Sig Validator Rotation Tool

WHAT IT DOES

This tool enables bridge administrators and security operators to rotate the multi-signature validator set that authorizes bridge transactions. Validator rotation is a critical security operation that allows the bridge to update its trusted signers, adjust the threshold required for transaction approval, and respond to validator key changes or security incidents. It connects to your wallet and reads the bridge contract address, current validators list, new validators list, threshold, rotation proposal, proposal status, rotation history, and timestamps. The tool signs and submits transactions to propose validator rotations, vote on rotations, execute rotations, update the validator set, record rotation metadata, and emit rotation events.

HOW TO USE

1. Connect your wallet using the wallet bridge (supports MetaMask, WalletConnect, and other EVM-compatible wallets).

2. Select the target network that matches your bridge contract deployment.

3. Enter the bridge contract address and the proposal ID, then click "load contract" to initialize the connection.

4. Click "fetch validator status" to retrieve the current validators list, threshold, proposal status, and rotation history.

5. Review the current validator set and threshold to understand the current security configuration.

6. Enter the new validators list (one address per line) and the new threshold.

7. Click "validate rotation" to verify that the new validator list is valid and the threshold is appropriate.

8. Click "propose rotation" to submit a rotation proposal for review by the current validators.

9. Validators can then click "vote for rotation" to approve the proposal.

10. Once the required number of votes is reached, click "execute rotation" to finalize the validator set update.

TECHNICAL MECHANISM

The tool uses ethers.js v5.7.2 to interact with any EVM-compatible bridge contract that implements a standard validator rotation interface (getValidators() view returns (address[]), getThreshold() view returns (uint256), getProposalStatus(uint256) view returns (uint8), proposeRotation(address[], uint256) external, voteRotation(uint256) external, executeRotation(uint256) external, getRotationHistory(uint256) view). The proposeRotation function creates a proposal with the new validator list and threshold. The voteRotation function allows current validators to vote for the proposal. Once the votes reach the required threshold, the executeRotation function updates the validator set and threshold. The contract tracks the proposal status (none, pending, active, executed, rejected) and maintains a rotation history for audit purposes. Transaction handling follows EIP-1559 gas price calculations using receipt.effectiveGasPrice for accurate cost reporting. Rotation metadata is recorded both in the contract's history and locally for the user's reference.

WHAT IT CANNOT SEE

This tool operates purely on-chain and cannot verify off-chain validator identity — it does not check who the validators are or whether they are trustworthy. It cannot validate validator trustworthiness — the tool cannot confirm that validators are honest, reliable, or have the necessary security practices. It cannot detect collusion — the tool cannot identify attempts by validators to collude or coordinate malicious actions. It cannot ensure quorum honesty — the tool does not verify that the voting process is fair or that the required number of votes was reached legitimately. The tool also cannot guarantee that rotation is secure — it relies on the contract's implementation and the validators' diligence.

PLEASE NOTE

This tool works exclusively with EVM-compatible blockchain networks (Ethereum, Polygon, Arbitrum, Optimism, Base, etc.). It requires the bridge contract to implement the validator rotation interface described above. All transactions incur gas fees paid by the connected wallet. The tool maintains no persistent storage — all state is refreshed from the blockchain on each session. Rotating bridge validators is a highly sensitive security operation — ensure that the new validators are trusted and that the threshold is set appropriately. Consider using a multi-step process with time delays and comprehensive verification before executing a rotation. Always verify the new validator list and threshold before proposing or voting. The rotation process may require multiple signatures from existing validators.