Node.js买卖比特币 教程
通过 Nodejs 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-node-client, 你应该先安装过它了, 这儿我们再安装其它的软件包.
yarn add fast-csv inquirer msgpack5 path pem-file
or
npm i fast-csv inquirer msgpack5 path pem-file
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。
let aesKey = ''; const privateKeyBytes = pem.decode(Buffer.from(data[0])); const aesKeyBuffer = await oaepDecrypt( Buffer.from(data[1], 'base64'), privateKeyBytes, 'SHA-256', Buffer.from(data[2]) ); aesKey = Buffer.from(aesKeyBuffer).toString('base64'); // console.log(aesKey); const newUserConfig = {clientId: data[3], aesKey: aesKey, privateKey: data[0], sessionId: data[2], clientSecret: "do not need", assetPin: data[4]}; // console.log(newUserConfig); const newUserClient = new HttpClient(newUserConfig); if ( args.type === TYPE_ASSETS_INFO ) { const assetsInfo = await newUserClient.getUserAssets(); console.log(assetsInfo); } else if (args.type === TYPE_BITCOIN_INFO) { // console.log('You choice to 1:', args); const assetInfo = await newUserClient.getUserAsset(BTC_ASSET_ID); console.log("Bitcoin address is ", assetInfo.public_key); console.log("Bitcoin balance is ", assetInfo.balance); console.log("Bitcoin price is (USD) ", assetInfo.price_usd);
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.
if ( args.type === TYPE_FETCH_USDT_MARKETINFO ) { // Make a request var instance = axios.create({ baseURL: 'https://exinone.com/exincore/markets', timeout: 3000, headers: {'X-Custom-Header': 'foobar'} }); instance.get('?base_asset=' + USDT_ASSET_ID) .then(function(response) { console.log(response.data.data); }); } else if ( args.type === TYPE_FETCH_BTC_MARKETINFO ) { var instance = axios.create({ baseURL: 'https://exinone.com/exincore/markets', timeout: 3000, headers: {'X-Custom-Header': 'foobar'} }); instance.get('?base_asset=' + BTC_ASSET_ID) .then(function(response) { console.log(response.data.data); }); }
交易前,创建一个Memo!
在第二章里,基于Mixin Network的 Nodejs 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。
const bytes = Buffer.from( BTC_ASSET_ID.replace(/-/g, ''), 'hex' ); const memo = msgpack .encode({ A: bytes, }) .toString('base64'); console.log(memo);
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:
const EXIN_BOT = "61103d28-3ac2-44a2-ae34-bd956070dab1"; const BTC_ASSET_ID = "c6d0c728-2624-429b-8e0d-d9d19b6592fa"; const EOS_ASSET_ID = "6cfe566e-4aad-470b-8c9a-2fd35b49c68d"; const USDT_ASSET_ID = "815b0b1a-2764-3736-8faa-42d694fa620a"; //change to your third exchange/cold btc wallet address const BTC_WALLET_ADDR = "14T129GTbXXPGXXvZzVaNLRFPeHXD1C25C"; const EOS_WALLET_NAME = "huobideposit"; const EOS_WALLET_TAG = "1872050"; //change to your mixin messenger account 's uuid const MASTER_UUID = "0b4f49dc-8fb4-4539-9a89-fb3afc613747"; else if ( args.type === TYPE_EXCHANGE_BTC_USDT ) { // Pack memo const bytes = Buffer.from( USDT_ASSET_ID.replace(/-/g, ''), 'hex' ); const memo = msgpack .encode({ A: bytes, }) .toString('base64'); console.log(memo); // gaFBxBDG0McoJiRCm44N2dGbZZL6 const assetInfo = await newUserClient.getUserAsset(BTC_ASSET_ID); console.log("The Wallet 's BTC balance is ", assetInfo.balance); if ( assetInfo.balance >= 0.0001 ) { const Obj = { assetId: BTC_ASSET_ID, recipientId: EXIN_BOT, traceId: newUserClient.getUUID(), amount: "0.0001", memo: memo, } console.log(Obj); newUserClient.transferFromBot(Obj); } else { console.log("Not enough BTC!"); } }
如果你想卖出USDT买入比特币,调用方式如下:
else if ( args.type === TYPE_EXCHANGE_USDT_BTC ) { // Pack memo const bytes = Buffer.from( BTC_ASSET_ID.replace(/-/g, ''), 'hex' ); const memo = msgpack .encode({ A: bytes, }) .toString('base64'); console.log(memo); const assetInfo = await newUserClient.getUserAsset(USDT_ASSET_ID); console.log("The Wallet 's BTC balance is ", assetInfo.balance); if ( assetInfo.balance >= 1 ) { const Obj = { assetId: USDT_ASSET_ID, recipientId: EXIN_BOT, traceId: newUserClient.getUUID(), amount: "1", memo: memo, } console.log(Obj); newUserClient.transferFromBot(Obj); } else { console.log("Not enough USDT!"); } }
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!
- getSnapshots 读取钱包的交易记录。
if ( args.type === TYPE_READ_SNAPSHOTS ) { const prompts = [ { name: 'datetime', type: 'input', message: "Input iso8601 datetime: ", }, ]; const answers = await inquirer.prompt(prompts); console.log(answers); console.log(encodeURIComponent(answers.datetime)); const snapshots = await newUserClient.getSnapshots({ limit: 10, asset: USDT_ASSET_ID, offset: answers.datetime, order: "ASC"}); // console.log(snapshots); snapshots.forEach(function(element) { if ( element.amount > 0) { if ( element.data != null ) { console.log(element.amount); console.log(element.data); const buf = Buffer.from(element.data, 'base64'); console.log(msgpack.decode(buf)); const codeInt = msgpack.decode(buf).C; if ( codeInt === 1000 ) { console.log("Successful Exchange"); } else { console.log("Go to there get more info https://github.com/exinone/exincore#code error code: " + codeStr);} const hexStr = Buffer.from(msgpack.decode(buf).FA).toString('hex'); const uuid = `${hexStr.slice(0,8)}-${hexStr.slice(8,12)}-${hexStr.slice(12,16)}-${hexStr.slice(16,20)}-${hexStr.slice(20)}`; console.log("Asset uuid is :" + uuid); const priceStr = msgpack.decode(buf).P; console.log("Price is :" + priceStr); const feeStr = msgpack.decode(buf).F; console.log("Fee is :" + feeStr); console.log("percent of Fee is :" + (feeStr/element.amount)* 100 + " %"); const tStr = msgpack.decode(buf).T; console.log("T is :" + tStr); } } }); }
一次成功的交易如下:
Make your choose 16: Read snapshots You choice to : { type: '16: Read snapshots' } You wallet is : 0b10471b-1aed-3944-9eda-5ab947562761 ? Input iso8601 datetime: 2019-04-08T05:16:33.615253Z { datetime: '2019-04-08T05:16:33.615253Z' } 2019-04-08T05%3A16%3A33.615253Z 0.5228004 hqFDzQPooVCnNTI0OC45OKFGqTAuMDAxMDQ5OKJGQcQQgVsLGidkNzaPqkLWlPpiCqFUoVKhT8QQeJyt3MrqSGOpbqzFXy5JUw== { C: 1000, P: '5248.98', F: '0.0010498', FA: <Buffer 81 5b 0b 1a 27 64 37 36 8f aa 42 d6 94 fa 62 0a>, T: 'R', O: <Buffer 78 9c ad dc ca ea 48 63 a9 6e ac c5 5f 2e 49 53> } Successful Exchange Asset uuid is :815b0b1a-2764-3736-8faa-42d694fa620a Price is :5248.98 Fee is :0.0010498 percent of Fee is :0.2008032128514056 % T is :R You select the : 0b10471b-1aed-3944-9eda-5ab947562761 You select the wallet 0b10471b-1aed-3944-9eda-5ab947562761
读取币的余额
通过读取币的余额,来确认交易情况!
if (args.type === TYPE_BITCOIN_INFO) { // console.log('You choice to 1:', args); const assetInfo = await newUserClient.getUserAsset(BTC_ASSET_ID); console.log("Bitcoin address is ", assetInfo.public_key); console.log("Bitcoin balance is ", assetInfo.balance); console.log("Bitcoin price is (USD) ", assetInfo.price_usd); }
源代码执行
编译执行,即可开始交易了.
- [x] node bitcoin-wallet-nodejs.js 编译项目.
本代码执行时的命令列表:
Make your choose(select the uuid for open the specified wallet): 0b10471b-1aed-3944-9eda-5ab947562761
You select the : 0b10471b-1aed-3944-9eda-5ab947562761
You select the wallet 0b10471b-1aed-3944-9eda-5ab947562761
?
Make your choose (Use arrow keys)
- 0: Read All Asssets Balance
- 1: Read Bitcoin Balance & Address
- 2: Read USDT Balance & Address
- 3: Read EOS Balance & Address
- 4: Transfer BTC from Bot to Wallet
- 5: Transfer EOS from Bot to Wallet
- 6: Transfer BTC from Wallet to Master
- 7: Transfer EOS from Wallet to Master
- 8: Verify Wallet PIN
- 9: BTC withdraw
- 10: EOS withdraw
- 11: Fetch BTC withdrawal info
- 12: Fetch EOS withdrawal info
- 13: Fetch USDT Market info
- 14: Fetch BTC Market info
- 14: Transfer 0.0001 BTC buy USDT
- 15: Transfer USDT $1 buy BTC
- 16: Read snapshots
- Exit