This repository contains contracts to support cross chain bridging on EVM chains. The main contract is OFTWrapper which supports bridging using LayerZero.
OFTWrapper serves as a proxy for LayerZero's OFT standard, allowing LayerZero to mint and burn tokens as usual,
which includes the same AML standards as a same chain transfer. When LayerZero initiates a mint or burn request,
the OFTWrapper forwards it to the underlying token contract. For this to work, the underlying token must authorize
OFTWrapper to perform minting and burning operations on its behalf.
Audits were performed by both Zellic and Trail of Bits. Audit reports can be found here.
OFTWrapper is a non-upgradeable contract. If a change needs to be made a new contract should be deployed.
The underlying token should then revoke mint and burn permissions on the old contract and grant mint and burn
permissions to the new contract.
Install dependencies:
npm install
Compile the contracts:
npx hardhat compile
Run unit tests:
npx hardhat test
Check test coverage:
npx hardhat coverage