Contract: Burn Canonical Token Transfer Refund

Trigger cBridge `withdraw` function with all needed info. Then cBridge PeggedTokenBridge contract will mint corresponding assets to user's address on source chain

Implementation

Certain failed burn/withdraw transfers sent via PeggedTokenBridge contract can be refunded using the mint function. Please read the gateway refund process first to learn how to obtain the parameters required. NOTE: DO NOT call addLiquidity from a smart contract, as currently it is not possible to withdraw liquidity added from contract addresses.
peggedTokenBridge.mint(wdmsg, sigs, signers, powers)

Request Parameters

All information is given by cBridge gateway in getTransferStatus response​
wdmsg
BytesLike
wd_onchain
sigs
Array<BytesLike>
sorted_sigs
signers
Array<String>
signers
powers
Array<BigNumber>
powers
Notice: Since the types of parameters are different between getTransferStatus response and withdraw request, please convert them accordingly. See details in the below code sample
JavaScript
import { base64, getAddress, hexlify } from "ethers/lib/utils";
​
const wdmsg = base64.decode(wd_onchain);
​
const signers = _signers.map(item => {
const decodeSigners = base64.decode(item);
const hexlifyObj = hexlify(decodeSigners);
return getAddress(hexlifyObj);
});
​
const sigs = sorted_sigs.map(item => {
return base64.decode(item);
});
​
const powers = _powers.map(item => {
return base64.decode(item);
});

Response

Since this function is an on-chain transaction, the response is the corresponding transaction response.