public async Task <ActionResult <decimal> > GetAddressBalance()
        {
            string accountIdString = User.FindFirstValue(ClaimTypes.NameIdentifier);

            if (accountIdString == null)
            {
                return(BadRequest("AccountId missing from request"));
            }

            int accountId = int.Parse(accountIdString);

            BitcoinWitPubKeyAddress address = await _bitcoin.GetDepositAddress(accountId);

            Money result = await _blockchain.GetAddressBalance(address);

            return(result.ToDecimal(MoneyUnit.BTC));
        }