package resolver import ( "errors" "github.com/ethereum/go-ethereum/common" ) var errorNotAvailableOnChainID = errors.New("not available for chainID") var contractAddressByChainID = map[uint64]common.Address{ 1: common.HexToAddress("0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e"), // mainnet 3: common.HexToAddress("0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e"), // ropsten 5: common.HexToAddress("0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e"), // goerli } func ContractAddress(chainID uint64) (common.Address, error) { addr, exists := contractAddressByChainID[chainID] if !exists { return *new(common.Address), errorNotAvailableOnChainID } return addr, nil }