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Aptos Bridge is built on top of LayerZero protocol and is a token bridge for transferring assets from Ethereum to Aptos. It leverages an oracle and relayer for cross-chain security for the protocol.
Aptos Bridge is built on top of LayerZero protocol and is a token bridge for transferring assets from Ethereum to Aptos. It leverages an oracle and relayer for cross-chain security for the protocol.
2024 May 29 — 2025 May 29
Aptos Bridge is built on top of LayerZero protocol. LayerZero relies on Oracles to periodically submit source chain block hashes to the destination chain. Once block hash is submitted, Relayers can provide the merkle proof for the transfers. Token Bridge owner can withdraw all funds from the bridge escrow after placing the bridge in an emergency withdrawal mode that will allow them to transfer all tokens out after 1 week delay.
Users can be censored if oracles or relayers fail to facilitate the transfer.
Funds can be stolen if oracles and relayers collude to submit fraudulent block hash and relay fraudulent transfer .
Funds can be stolen if token bridge owner (currently EOA) enables emergency withdrawal and users do not exit with their funds within a week.
Funds can be stolen if token bridge owner (currently EOA) sets WETH contract address to a malicious contract that will allow the owner to steal user's ETH.
Contract authorized to relay messages and - as a result - withdraw funds from the bridge.
Can upgrade LayerZero relayer contract with no delay.
Can upgrade LayerZero oracle contract with no delay.
Aptos Token Bridge.
The source code of this contract is not verified on Etherscan.
The source code of this contract is not verified on Etherscan.
The current deployment carries some associated risks:
Funds can be stolen if a contract receives a malicious code upgrade. There is no delay on code upgrades (CRITICAL).
Funds can be stolen if the source code of unverified contracts contains malicious code (CRITICAL).