private async Task <decimal> GetResultOfTransaction(string transactionHash, string againstAddress)
        {
            using (var client = new BlockchainHttpClient())
            {
                var result = await client.GetAsync <long>($"q/txresult/{transactionHash}/{againstAddress}");

                return(BitcoinValue.FromSatoshis(result).GetBtc());
            }
        }
        public async Task <decimal> GetPrice()
        {
            var response = await _blockchainHttpClient.GetAsync <BitcoinPrice>(@"https://blockchain.info/ru/ticker");

            return(response.USD.last);
        }