通过 C# 买卖Bitcoin

方案一: 通过ExinCore API进行币币交易Exincore 提供了基于Mixin Network的币币交易API.你可以支付USDT给ExinCore, ExinCore会以最低的价格，最优惠的交易费将你购买的比特币转给你, 每一币交易都是匿名的，并且可以在区块链上进行验证，交易的细节只有你与ExinCore知道！ExinCore 也不知道你是谁，它只知道你的UUID.预备知识:你先需要创建一个机器人, 方法在 教程一.安装依赖包正如教程一里我们介绍过的， 我们需要依赖 mixin-csharp-sdk, 你应该先安装过它了， 这儿我们再安装 MsgPack.Cli 软件包. dotnet add package MixinCSharpSdk dotnet add package MsgPack.Cli –version 1.0.1充币到 Mixin Network, 并读出它的余额.通过ExinCore API, 可以进行BTC, USDT, EOS, ETH 等等交易， 此处演示用 USDT购买BTC 或者 用BTC购买USDT。交易前，先检查一下钱包地址。完整的步骤如下:检查比特币或USDT的余额，钱包地址。并记下钱包地址。从第三方交易所或者你的冷钱包中，将币充到上述钱包地址。再检查一下币的余额，看到帐与否。(比特币的到帐时间是5个区块的高度，约100分钟)。比特币与USDT的充值地址是一样的。 MixinApi mixinApiNewUser = new MixinApi(); mixinApiNewUser.Init(UserIDNewUser, “”, SessionIDNewUser, PinTokenNewUser, PrivateKeyNewUser); Asset AssetBTC = mixinApiNewUser.ReadAsset(USRCONFIG.ASSET_ID_BTC); Console.WriteLine(“New User " + UserIDNewUser + " ’s BTC balance is " + AssetBTC.balance); Console.WriteLine(“New User " + UserIDNewUser + " ’s BTC address is " + AssetBTC.public_key);查询ExinCore市场的价格信息如何来查询ExinCore市场的价格信息呢？你要先了解你交易的基础币是什么，如果你想买比特币，卖出USDT,那么基础货币就是USDT;如果你想买USDT,卖出比特币，那么基础货币就是比特币.string jsonData = FetchMarketPrice(“815b0b1a-2764-3736-8faa-42d694fa620a”);var marketObj = JsonConvert.DeserializeObject<MarketInfo>(jsonData);foreach (AssetInfo value in marketObj.data){ Console.WriteLine(value);}public class MarketInfo{ public string code { get; set; } public string message { get; set; } public List<AssetInfo> data { get; set; } public override string ToString() { return JsonConvert.SerializeObject(this); }}public class AssetInfo{ public string base_asset { get; set; } public string base_asset_symbol { get; set; } public string exchange_asset_symbol { get; set; } public string price { get; set; } public string minimum_amount { get; set; } public string maximum_amount { get; set; } public List<string> exchanges { get; set; } public override string ToString() { return JsonConvert.SerializeObject(this); }}public static string FetchMarketPrice(string asset_id){ return FetchMarketPriceAsync(asset_id).Result;}public static async Task<string> FetchMarketPriceAsync(string asset_id){ HttpClient client = new HttpClient(); // Call asynchronous network methods in a try/catch block to handle exceptions try { HttpResponseMessage response = await client.GetAsync(“https://exinone.com/exincore/markets?base_asset=" + asset_id); response.EnsureSuccessStatusCode(); string responseBody = await response.Content.ReadAsStringAsync(); // Above three lines can be replaced with new helper method below // string responseBody = await client.GetStringAsync(uri); Console.WriteLine(responseBody); return responseBody; } catch(HttpRequestException e) { Console.WriteLine("\nException Caught!”); Console.WriteLine(“Message :{0} “,e.Message); } return null;}交易前，创建一个Memo!在第二章里,基于Mixin Network的 C# 比特币开发教程: 机器人接受比特币并立即退还用户, 我们学习过退还用户比特币，在这里，我们除了给ExinCore支付币外，还要告诉他我们想购买的币是什么，即将想购买的币存到memo里。private static string TargetAssetID(string asset_id) { Guid guid = new Guid(asset_id); var gbytes = guid.ToByteArray(); Array.Reverse(gbytes,0,4); Array.Reverse(gbytes,4,2); Array.Reverse(gbytes,6,2); var serializer = MessagePackSerializer.Get(gbytes.GetType()); var stream = new MemoryStream(); serializer.Pack(stream, gbytes); return Convert.ToBase64String(stream.ToArray());}币币交易的完整流程转币给ExinCore时，将memo写入你希望购买的币，否则，ExinCore会直接退币给你！如果你想卖出比特币买入USDT,调用方式如下：//config.cspublic static string EXIN_BOT = “61103d28-3ac2-44a2-ae34-bd956070dab1”;// public static string EXIN_BOT = “0b1a2027-4fd6-3aa0-b3a3-814778bb7a2e”;public static string MASTER_UUID = “0b4f49dc-8fb4-4539-9a89-fb3afc613747”;public static string ASSET_ID_BTC = “c6d0c728-2624-429b-8e0d-d9d19b6592fa”;public static string ASSET_ID_EOS = “6cfe566e-4aad-470b-8c9a-2fd35b49c68d”;public static string ASSET_ID_USDT= “815b0b1a-2764-3736-8faa-42d694fa620a”;//Program.csif (cmd == “5” ) { var memo = TargetAssetID(USRCONFIG.ASSET_ID_USDT); Console.WriteLine(memo); using (TextReader fileReader = File.OpenText(@“mybitcoin_wallet.csv”)) { var csv = new CsvReader(fileReader); csv.Configuration.HasHeaderRecord = false; while (csv.Read()) { string PrivateKeyNewUser; csv.TryGetField<string>(0, out PrivateKeyNewUser); string PinTokenNewUser; csv.TryGetField<string>(1, out PinTokenNewUser); string SessionIDNewUser; csv.TryGetField<string>(2, out SessionIDNewUser); string UserIDNewUser; csv.TryGetField<string>(3, out UserIDNewUser); string PinNewUser; csv.TryGetField<string>(4, out PinNewUser); MixinApi mixinApiNewUser = new MixinApi(); mixinApiNewUser.Init(UserIDNewUser, “”, SessionIDNewUser, PinTokenNewUser, PrivateKeyNewUser); // Console.WriteLine(mixinApiNewUser.CreatePIN(””, “123456”).ToString()); Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.ASSET_ID_BTC, USRCONFIG.EXIN_BOT, “0.0001”, PinNewUser.ToString(), System.Guid.NewGuid().ToString(), memo); Console.WriteLine(reqInfo); } }}如果你想卖出USDT买入比特币,调用方式如下：if (cmd == “6” ) { var memo = TargetAssetID(USRCONFIG.ASSET_ID_BTC); Console.WriteLine(memo); using (TextReader fileReader = File.OpenText(@“mybitcoin_wallet.csv”)) { var csv = new CsvReader(fileReader); csv.Configuration.HasHeaderRecord = false; while (csv.Read()) { string PrivateKeyNewUser; csv.TryGetField<string>(0, out PrivateKeyNewUser); string PinTokenNewUser; csv.TryGetField<string>(1, out PinTokenNewUser); string SessionIDNewUser; csv.TryGetField<string>(2, out SessionIDNewUser); string UserIDNewUser; csv.TryGetField<string>(3, out UserIDNewUser); string PinNewUser; csv.TryGetField<string>(4, out PinNewUser); MixinApi mixinApiNewUser = new MixinApi(); mixinApiNewUser.Init(UserIDNewUser, “”, SessionIDNewUser, PinTokenNewUser, PrivateKeyNewUser); // Console.WriteLine(mixinApiNewUser.CreatePIN(””, “123456”).ToString()); Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.ASSET_ID_USDT, USRCONFIG.EXIN_BOT, “1”, PinNewUser.ToString(), System.Guid.NewGuid().ToString(), memo); Console.WriteLine(reqInfo); } }}交易完成后，Exincore会将你需要的币转到你的帐上，同样，会在memo里，记录成交价格，交易费用等信息！你只需要按下面的方式解开即可！NetworkSnapshots 读取钱包的交易记录。using (TextReader fileReader = File.OpenText(@“mybitcoin_wallet.csv”)){ var csv = new CsvReader(fileReader); csv.Configuration.HasHeaderRecord = false; while (csv.Read()) { string PrivateKeyNewUser; csv.TryGetField<string>(0, out PrivateKeyNewUser); string PinTokenNewUser; csv.TryGetField<string>(1, out PinTokenNewUser); string SessionIDNewUser; csv.TryGetField<string>(2, out SessionIDNewUser); string UserIDNewUser; csv.TryGetField<string>(3, out UserIDNewUser); string PinNewUser; csv.TryGetField<string>(4, out PinNewUser); MixinApi mixinApiNewUser = new MixinApi(); mixinApiNewUser.Init(UserIDNewUser, “”, SessionIDNewUser, PinTokenNewUser, PrivateKeyNewUser); // Console.WriteLine(mixinApiNewUser.CreatePIN("", “123456”).ToString()); var snaps = mixinApiNewUser.NetworkSnapshots(10,“2019-03-26T01:49:52.462741863Z”, “815b0b1a-2764-3736-8faa-42d694fa620a”, “ASC”,true); // Console.WriteLine(snaps); foreach (var sn in snaps) { if ( Convert.ToDouble(sn.amount) > 0 ) { if ( sn.data != null ) { var memoBytes = Convert.FromBase64String(sn.data); var memoObj = MessagePackSerializer.UnpackMessagePackObject(memoBytes); Console.WriteLine(memoObj.ToString()); var xR = JsonConvert.DeserializeObject<ExchangeResult>(memoObj.ToString()); Console.WriteLine(xR.C); if (xR.C == “1000”) { Console.WriteLine("———–Successfully–Exchange————-"); Console.WriteLine(“You got " + sn.amount.ToString() + " back!”); Console.WriteLine(“Price is " + xR.P + " Fee is " + xR.F + " Percent of fee: " + Convert.ToDouble(xR.F)/Convert.ToDouble(sn.amount)*100 + " %”); Console.WriteLine(“Fee Asset uuid: " + HexStringToUUID(xR.FA)); Console.WriteLine(“trace uuid: " + HexStringToUUID(xR.O)); Console.WriteLine(”———-end of snapshots query————–”); } } } } }}一次成功的交易如下：———–Successfully–Exchange————-You got 0.3923244 back!Price is 3938.62 Fee is 0.0007878 Percent of fee: 0.200803212851406 %Fee Asset uuid: 815b0b1a-2764-3736-8faa-42d694fa620atrace uuid: 1a3d8561-26e7-49bb-8ae3-ed85ce2bb957———-end of snapshots query————–读取币的余额通过读取币的余额，来确认交易情况！ MixinApi mixinApiNewUser = new MixinApi(); mixinApiNewUser.Init(UserIDNewUser, “”, SessionIDNewUser, PinTokenNewUser, PrivateKeyNewUser); Asset AssetBTC = mixinApiNewUser.ReadAsset(USRCONFIG.ASSET_ID_BTC); Console.WriteLine(“New User " + UserIDNewUser + " ’s BTC balance is " + AssetBTC.balance); Console.WriteLine(“New User " + UserIDNewUser + " ’s BTC address is " + AssetBTC.public_key);源代码执行编译执行，即可开始交易了.[x] dotnet build 编译项目.[x] dotnet bin/Debug/netcoreapp2.2/bitcoin_wallet.dll 运行它.本代码执行时的命令列表:1: Create Bitcoin Wallet and update PIN2: Read Bitcoin balance & address3: Read USDT balance & address4: Read EOS balance & address5: pay 0.0001 BTC buy USDT6: pay $1 USDT buy BTC7: Read Snapshots8: Fetch market price(USDT)9: Fetch market price(BTC)v: Verify Wallet Pinq: ExitMake your choose:完整代码Solution Two: List your order on Ocean.One exchange