🌄HashiTokenBridge with OFT
How it works
1. Deploy two SJLZEndpoints, one on each of the source and destination chains. SJLZEndpoint acts as a Layer Zero compatible endpoint, utilizing Hashi for cross-chain message propagation.
2. Deploy two SJToken contracts, following the OFT (Omnichain Fungible Token) standard. One contract on the source chain and the other on the destination chain. Reference the OFT documentation for guidance.
3. Execute xTransfer on the SJToken to start a cross-chain minting or burning process. Ensure you approve the required token amount for wrapping if you are on the native chain.
4. The xTransfer function internally calls _send, a function defined in the OFT standard. This function, in turn, invokes the send function on SJLZEndpoint with a specific payload.
5. The SJLZEndpoint employs Yaho to relay the message across chains using the Hashi Message Relays.
6. Each involved bridge processes the message and stores the hash of the message in its adapter.
7. After all bridges have processed the message, Hashi executes it.
8. Upon execution, Yaru calls SJLZEndpoint.receivePayload, which then calls lzReceive on the host SJToken. The lzReceive implemented within the OFT contract, mints the corresponding amount of tokens.
Reference
Last updated
