IDO : https://miso.sushi.com/auctions/0x7a004834888586DC68aA39dfB2AE47AF00710a12
ICO : https://coinmarketcap.com/currencies/wrapped-ncg/
WNCG to NCG (burn)
NCG to WNCG (mint)
NCG: https://9cscan.com/address/0x9093dd96c4bb6b44a9e0a522e2de49641f146223
WNCG: https://etherscan.io/address/0x9093dd96c4bb6b44a9e0a522e2de49641f146223
참고)
Ethereum Token: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol
