getCoinType method
Implementation
String getCoinType(String path){
//m / purpose' / coin_type' / account' / change / address_index
final regex = RegExp(r"^(m\/)?(\d+'?\/)*\d+'?$");
if (!regex.hasMatch(path)) throw ArgumentError("Expected BIP32 Path");
List<String> splitPath = path.split("/");
String coinType=splitPath[2].replaceAll("'", "");
return coinType;
}