Bridge Mechanism

The current threshold for cross-chain transaction execution is 3, with 4 Relayers participating in the voting process. To ensure user asset security, each chain’s Erc20Handler contract sets a vault address, which is a secure third-party MPC wallet.

When assets are bridged, they are transferred in real time to the vault wallet address; the contracts themselves do not hold large amounts of assets for extended periods. After a user initiates a deposit on the source chain, the Relayers scan the blocks across chains and cast validation votes. Once votes reach the threshold (3 out of 4), the target chain contract requests the corresponding token funds from the vault. Subsequently, an MPC 3-of-5 automated risk control approval is performed in the vault before finalizing the asset release on the target chain.