To mint pegged token for user on pegged chain, FE(front-end) needs to do the following things:
- 3.Check user's on-chain token allowance for cBridge contract. If the allowance is not enough for mint, trigger the corresponding on-chain approve flow
- 4.Submit on-chain deposit/mint request to cBridge OriginalTokenVault contract on source chain
- 5.Get transfer status repeatedly to check whether the mint is complete.