Manual Review

A thorough line-by-line review was conducted on the codebase to identify potential malfunctions and vulnerabilities in Etherlink's LayerZero compatible EIP-20 token.

As the project at hand implements a native cross-chain EIP-20 wrapper token based on LayerZero's OFT, intricate care was put into ensuring that the flow of funds within the system conforms to the specifications and restrictions laid forth within the protocol's specification.

We validated that all state transitions of the system occur within sane criteria and that all rudimentary formulas within the system execute as expected. We pinpointed potential security enhancements within the system which we advise the Etherlink team to take into consideration.

Additionally, the system was investigated for any other commonly present attack vectors such as re-entrancy attacks, mathematical truncations, logical flaws and ERC / EIP standard inconsistencies. The documentation of the project was satisfactory to the extent it need be.

A total of 6 findings were identified over the course of the manual review of which 3 findings concerned the behaviour and security of the system. The non-security related findings, such as optimizations, are included in the separate Code Style chapter.

The finding table below enumerates all these security / behavioural findings:

ID	Severity	Addressed	Title
WXT-01M			Incorrect Relay of Source ID
WXT-02M			Inexplicable Simultaneous Support of Testnet & Mainnet
WXT-03M			Potential Cross-Chain Security Enhancement