public Task <CreateTransactionResponse> GetDestroyTransaction(BitcoinAddress bitcoinAddres, decimal modelAmount, IAsset asset, Guid transactionId) { return(Retry.Try(async() => { var context = _transactionBuildContextFactory.Create(_connectionParams.Network); return await context.Build(async() => { var builder = new TransactionBuilder(); var assetId = new BitcoinAssetId(asset.BlockChainAssetId, _connectionParams.Network).AssetId; var coins = (await _bitcoinOutputsService.GetColoredUnspentOutputs(bitcoinAddres.ToString(), assetId)).ToList(); builder.SetChange(bitcoinAddres, ChangeType.Colored); builder.AddCoins(coins); var assetMoney = new AssetMoney(assetId, modelAmount, asset.MultiplierPower); var changeAddress = BitcoinAddress.Create(_baseSettings.ChangeAddress, _connectionParams.Network); _transactionBuildHelper.SendAssetWithChange(builder, context, coins, changeAddress, assetMoney, bitcoinAddres); await _transactionBuildHelper.AddFee(builder, context); var tx = builder.BuildTransaction(true); OpenAssetsHelper.DestroyColorCoin(tx, assetMoney, changeAddress, _connectionParams.Network); await _spentOutputService.SaveSpentOutputs(transactionId, tx); await SaveNewOutputs(transactionId, tx, context); return new CreateTransactionResponse(tx.ToHex(), transactionId); }); }, exception => (exception as BackendException)?.Code == ErrorCode.TransactionConcurrentInputsProblem, 3, _log)); }