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.
Here is the abi for PeggedTokenBridge: https://github.com/celer-network/cBridge-typescript-client/tree/main/contract/abi/pegged/PeggedTokenBridge.sol​
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.

Contract: Burn Canonical Token

Gateway: MarkRefRelation

Last modified 4d ago

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Outline

Implementation

Request Parameters

Response