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通过 C# 买卖Bitcoin

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摘要:方案二在去中心化交易所上挂单买卖是基于的去中心化交易所,它性能一流。完整的步骤如下检查比特币或的余额,钱包地址。比特币的到帐时间是个区块的高度,约分钟。

上一章介绍了Exincore,你可以1秒完成资产的市价买卖。如果你想限定价格买卖,或者买卖一些exincore不支持的资产,你需要OceanOne。

方案二: 在去中心化交易所OceanOne上挂单买卖Bitcoin

Ocean.one是基于Mixin Network的去中心化交易所,它性能一流。
你可以在OceanOne上交易任何资产,只需要将你的币转给OceanOne, 将交易信息写在交易的memo里,OceanOne会在市场里列出你的交易需求,
交易成功后,会将目标币转入到你的MixinNetwork帐上,它有三大特点与优势:

不需要在OceanOne注册

不需要存币到交易所

支持所有Mixin Network上能够转账的资产,所有的ERC20 EOS代币。

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

我们需要依赖 MsgPack.Cli and mixin-csharp-sdk ,第四章 已经做过介绍, 你应该先安装过它了.

充币到 Mixin Network, 并读出它的余额.

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。

if (cmd == "aw" ) {
    // Console.WriteLine(mixinApi.VerifyPIN(USRCONFIG.PinCode.ToString()).ToString());
    MixinApi mixinApiNewUser = GetWalletSDK();
    var assets = mixinApiNewUser.ReadAssets();
    string wuuid = GetWalletUUID();
    Console.WriteLine("Current wallet uuid is " + wuuid);
    foreach (Asset asset in assets)
    {
      if (asset.symbol == "EOS") {
       Console.WriteLine(asset.symbol + " Public Address is: " +
                         asset.account_name + " " +
                         asset.account_tag +
                         " Balance is: " + asset.balance);
     } else Console.WriteLine(asset.symbol + " Public Address is: " +
                              asset.public_key + " Balance is: " +
                              asset.balance);
    Console.WriteLine();
    }
}
取得Ocean.one的市场价格信息

如何来查询Ocean.one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.

public class MarketInfoOcean
{
    public Omarket data { get; set; }
}
public class Omarket {
  public string market { get; set; }
  public string timestamp  { get; set; }
  public Side data { get; set; }
}
public class Side {
  public List asks  { get; set; }
  public List bids  { get; set; }
}
public class order {
  public string amount { get; set; }
  public string funds { get; set; }
  public string price { get; set; }
  public string side { get; set; }
}

if (cmdo == "1") {
  string jsonData = FetchOceanMarketPrice(USRCONFIG.XIN_ASSET_ID,USRCONFIG.ASSET_ID_USDT);
  // string jsonData = FetchMarketPrice("c6d0c728-2624-429b-8e0d-d9d19b6592fa");
  var marketObj = JsonConvert.DeserializeObject(jsonData);
  Console.WriteLine("--Price--Amount---Funds---Side----");
  foreach (order value in marketObj.data.data.asks)
  {
      Console.WriteLine(value.price + " " + value.amount + " " + value.funds + " " + value.side);
  }
  foreach (order value in marketObj.data.data.bids)
  {
      Console.WriteLine(value.price + " " + value.amount + " " + value.funds + " " + value.side);
  }
}
public static string FetchOceanMarketPrice(string asset_id, string base_asset)
{
    return FetchOceanMarketPriceAsync(asset_id,base_asset).Result;
}
public static async Task FetchOceanMarketPriceAsync(string asset_id, string base_asset)
{
  HttpClient client = new HttpClient();
  string baseUrl = "https://events.ocean.one/markets/" + asset_id + "-" + base_asset + "/book";
  try
  {
     HttpResponseMessage response = await client.GetAsync(baseUrl);
     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("
Exception 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, 我们学习过转帐,这儿我们介绍如何告诉Ocean.one,我们给它转帐的目的是什么,信息全部放在memo里.

Side 方向,"B" 或者 "A", "B"是购买, "A"是出售.

AssetUuid 目标虚拟资产的UUID.

Price 价格,如果操作方向是"B", 价格就是AssetUUID的价格; 如果操作方向是"B", 价格就是转给Ocean.one币的价格.

private static string GenerateOrderMemo(string Side, string AssetUuid, string Price) {
  Hashtable temp = new Hashtable();
  temp.Add("S","A");
  temp.Add("A",StringGuid2Bytes(AssetUuid));
  temp.Add("P",Price);
  temp.Add("T","L");
  var serializer3 = MessagePackSerializer.Get();
  var stream3 = new MemoryStream();
  serializer3.Pack(stream3, temp);
  string memo = Convert.ToBase64String(stream3.ToArray());
  return memo;
}

买入XIN的代码如下:

public static string  OCEANONE_BOT   = "aaff5bef-42fb-4c9f-90e0-29f69176b7d4";
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";

public static string  XIN_ASSET_ID   = "c94ac88f-4671-3976-b60a-09064f1811e8";

if ( cmdo == "b1") {
  Console.WriteLine("Please input the price of XIN/USDT: ");
  var pinput = Console.ReadLine();
  Console.WriteLine("Please input the amount of USDT: ");
  var ainput = Console.ReadLine();

  string memo = GenerateOrderMemo("A",USRCONFIG.ASSET_ID_USDT,pinput);
  Console.WriteLine(memo);
  MixinApi mixinApiNewUser = GetWalletSDK();
  var assets = mixinApiNewUser.ReadAsset(USRCONFIG.ASSET_ID_USDT);
  Console.WriteLine(assets.balance);
  float balance = float.Parse(assets.balance);
  float amount  = float.Parse(ainput);
  if ( ( balance >= 1.0 ) && ( balance >= amount ) ) {
    Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.ASSET_ID_USDT,
                            USRCONFIG.OCEANONE_BOT,
                            ainput,
                            GetWalletPinCode(),
                            System.Guid.NewGuid().ToString(),
                            memo);
    Console.WriteLine(reqInfo);
    Console.WriteLine("Order id is " + reqInfo.trace_id);
  } else Console.WriteLine("Not enough USDT!");
}
出售XIN的例子

转打算出售的XIN给Ocean.one(OCEANONE_BOT),将你打算换回来的目标虚拟资产的UUID放入memo.

if ( cmdo == "s1") {
  Console.WriteLine("Please input the price of XIN/USDT: ");
  var pinput = Console.ReadLine();
  Console.WriteLine("Please input the amount of XIN: ");
  var ainput = Console.ReadLine();
  string memo = GenerateOrderMemo("B",USRCONFIG.XIN_ASSET_ID,pinput);
  Console.WriteLine(memo);
  // Console.WriteLine(Convert.ToBase64String(stream3.ToArray()));
  MixinApi mixinApiNewUser = GetWalletSDK();
  var assets = mixinApiNewUser.ReadAsset(USRCONFIG.XIN_ASSET_ID);
  float balance = float.Parse(assets.balance);
  float amount  = float.Parse(ainput);
  if ( ( balance >= 0 ) && ( balance >= amount ) ) {
    Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.XIN_ASSET_ID,
                            USRCONFIG.OCEANONE_BOT,
                            ainput,
                            GetWalletPinCode(),
                            System.Guid.NewGuid().ToString(),
                            memo);
    Console.WriteLine(reqInfo);
    Console.WriteLine("Order id is " + reqInfo.trace_id);
  } else Console.WriteLine("Not enough XIN!");
}

一个成功的挂单如下:

Please input the price of XIN/USDT:
110
Please input the amount of USDT:
1
hKFBxBDJSsiPRnE5drYKCQZPGBHooVShTKFToUKhUKMxMTA=
1
{"type":"transfer","snapshot_id":"fe04c667-3ad9-4f2b-b205-ba2cef3733ea",
"opponent_id":"aaff5bef-42fb-4c9f-90e0-29f69176b7d4",
"asset_id":"815b0b1a-2764-3736-8faa-42d694fa620a","amount":"-1",
"trace_id":"12cd76aa-e953-4897-bef0-18123a5e69dc",
"memo":"hKFBxBDJSsiPRnE5drYKCQZPGBHooVShTKFToUKhUKMxMTA=",
"created_at":"2019-05-06T06:43:13.488971627Z"}
Order id is 12cd76aa-e953-4897-bef0-18123a5e69dc
取消挂单

Ocean.one将trace_id当做订单,比如上面的例子, 12cd76aa-e953-4897-bef0-18123a5e69dc 就是订单号,我们用他来取消订单。

if ( cmdo == "c") {
  Console.WriteLine("Please input the Order id: ");
  var oinput = Console.ReadLine();
  Hashtable temp = new Hashtable();
  temp.Add("O",StringGuid2Bytes(oinput));
  var serializer3 = MessagePackSerializer.Get();
  var stream3 = new MemoryStream();
  serializer3.Pack(stream3, temp);
  string memo = Convert.ToBase64String(stream3.ToArray());
  MixinApi mixinApiNewUser = GetWalletSDK();
  var assets = mixinApiNewUser.ReadAsset(USRCONFIG.CNB_ASSET_ID);
  Console.WriteLine(assets.balance);
  float balance = float.Parse(assets.balance);
  if (  balance >= 0  ) {
    Transfer reqInfo = mixinApiNewUser.Transfer(USRCONFIG.CNB_ASSET_ID,
                            USRCONFIG.OCEANONE_BOT,
                            "0.0000001",
                            GetWalletPinCode(),
                            System.Guid.NewGuid().ToString(),
                            memo);
    Console.WriteLine(reqInfo);
  } else Console.WriteLine("Not enough CNB!");
  }
通过读取资产余额,来确认到帐情况
MixinApi mixinApiNewUser = GetWalletSDK();
var assets = mixinApiNewUser.ReadAssets();
源代码执行

编译执行,即可开始交易了.

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:

Commands list of this source code:

1: Create Bitcoin Wallet and update PIN

2: Read Bitcoin balance & address

3: Read USDT balance & address

4: Read EOS balance & address

tub: Transfer USDT from Bot to Wallet

tum: Transfer USDT from Wallet to Master

tcb: Transfer CNB from Bot to Wallet

tcm: Transfer CNB from Wallet to Master

txb: Transfer XIN from Bot to Wallet

txm: Transfer XIN from Wallet to Master

5: pay 0.0001 BTC buy USDT

6: pay $1 USDT buy BTC

7: Read Snapshots

8: Fetch market price(USDT)

9: Fetch market price(BTC)

v: Verify Wallet Pin

ab: Read Bot Assets

aw: Read Wallet Assets

o: OceanOne Trading

q: Exit

Make your choose:

Make your choose(eg: q for Exit!):

Make your choose:
o

1: Fetch XIN/USDT orders

s1: Sell XIN/USDT

b1: Buy XIN/USDT

2: Fetch ERC20(Benz)/USDT orders

s2: Sell Benz/USDT

b2: Buy Benz/USDT

c: Cancel Order

q: Exit

完整代码

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