getBalance method
Implementation
@override
Future<BalanceInfo> getBalance(String address) async {
final scriptHash = _addressToScriptHash(address);
final result = await _rpc(
'blockchain.scripthash.get_balance',
[scriptHash],
);
final m = Map<String, dynamic>.from(result as Map);
return BalanceInfo(
address: address,
confirmed: BigInt.from(m['confirmed'] as int),
unconfirmed: BigInt.from(m['unconfirmed'] as int),
);
}