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: 挂单Ocean.One交易所
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
正如教程一里我们介绍过的， 我们需要依赖 mixin-sdk-php, 你应该已经先安装过它了.
安装依赖的库
第四课, 在上一课中已经安装好了.
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。
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"; $mixinSdk_eachAccountInstance = new MixinSDK(GenerateConfigByCSV($data)); $asset_info = $mixinSdk_eachAccountInstance->Wallet()->readAsset(BTC_ASSET_ID); print_r("Bitcoin wallet address is :".$asset_info["public_key"]."\n"); print_r("Bitcoin wallet balance is :".$asset_info["balance"]."\n");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.
if ( $ocmd == '1') { getOceanOneMarketInfos(XIN_ASSET_ID,USDT_ASSET_ID);}function getOceanOneMarketInfos($targetCoin, $baseCoin) { $client = new GuzzleHttp\Client(); $baseUrl = "https://events.ocean.one/markets/".$targetCoin."-".$baseCoin."/book"; $res = $client->request('GET', $baseUrl, [ ]); if ($res->getStatusCode() == "200") { // echo $res->getStatusCode() . PHP_EOL; $resInfo = json_decode($res->getBody(), true); echo "Side | Price | Amount | Funds" . PHP_EOL; foreach ($resInfo["data"]["data"]["asks"] as $key => $exchange) { echo $exchange["side"] . " " . $exchange["price"] . " " . $exchange["amount"] ." " . $exchange["funds"] . PHP_EOL; } foreach ($resInfo["data"]["data"]["bids"] as $key => $exchange) { echo $exchange["side"] . " " . $exchange["price"] . " " . $exchange["amount"] ." " . $exchange["funds"] . PHP_EOL; } }}交易前，创建一个Memo!
在第二章里,基于Mixin Network的 PHP 比特币开发教程: 机器人接受比特币并立即退还用户, 我们学习过转帐，这儿我们介绍如何告诉Ocean.one，我们给它转帐的目的是什么，信息全部放在memo里.
- side 方向,"B" 或者 "A", "B"是购买, "A"是出售.
- asset 目标虚拟资产的UUID.
- price 价格，如果操作方向是"B", 价格就是AssetUUID的价格; 如果操作方向是"B", 价格就是转给Ocean.one币的价格.
function GenerateOrderMemo($side, $asset, $price) :string { $memo = base64_encode(MessagePack::pack([ 'S' => $side, 'A' => Uuid::fromString($asset)->getBytes(), 'P' => $price, 'T' => 'L', ])); return $memo;}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.
const OCEANONE_BOT = "aaff5bef-42fb-4c9f-90e0-29f69176b7d4";const USDT_ASSET_ID = "815b0b1a-2764-3736-8faa-42d694fa620a";const XIN_ASSET_ID = "c94ac88f-4671-3976-b60a-09064f1811e8";if ( $ocmd == 's1') { $p = readline("Input the Price of XIN/USDT: "); $a = readline("Input the Amount of XIN: "); $tMemo = GenerateOrderMemo("A",USDT_ASSET_ID,$p); echo $tMemo . PHP_EOL; $mixinSdk_WalletInstance = GenerateWalletSDKFromCSV(); $asset_info = $mixinSdk_WalletInstance->Wallet()->readAsset(XIN_ASSET_ID); print_r($asset_info); if ( (float) $asset_info["balance"] >= (float) $a ) { $transInfos = $mixinSdk_WalletInstance->Wallet()->transfer(XIN_ASSET_ID,OCEANONE_BOT, $mixinSdk_WalletInstance->getConfig()['default']['pin'], $a, $tMemo); print_r($transInfos); echo "The Order ID (trace_id) is: " . $transInfos["trace_id"] . PHP_EOL; } else { echo "Not enough XIN!\n";}}如果你是打算买XIN,操作如下:
if ( $ocmd == 'b1') { $p = readline("Input the Price of XIN/USDT: "); $a = readline("Input the Amount of USDT: "); $tMemo = GenerateOrderMemo("B",XIN_ASSET_ID,$p); echo $tMemo . PHP_EOL; $mixinSdk_WalletInstance = GenerateWalletSDKFromCSV(); $asset_info = $mixinSdk_WalletInstance->Wallet()->readAsset(USDT_ASSET_ID); print_r($asset_info); if ( ((float) $asset_info["balance"] >= 1) && ( (float) $asset_info["balance"] >= (float) $a ) ) { $transInfos = $mixinSdk_WalletInstance->Wallet()->transfer(USDT_ASSET_ID,OCEANONE_BOT, $mixinSdk_WalletInstance->getConfig()['default']['pin'], $a, $tMemo); print_r($transInfos); echo "The Order ID (trace_id) is: " . $transInfos["trace_id"] . PHP_EOL; } else { echo "Not enough USDT!\n";}}一个成功的挂单如下：
Input the Price of XIN/USDT: 112Input the Amount of USDT: 1hKFToUKhQcQQyUrIj0ZxOXa2CgkGTxgR6KFQozExMqFUoUw=client id is:26b20aa5-40c0-3e00-9de0-666cfb6f2daaArray( [type] => asset [asset_id] => 815b0b1a-2764-3736-8faa-42d694fa620a [chain_id] => c6d0c728-2624-429b-8e0d-d9d19b6592fa [symbol] => USDT [name] => Tether USD [icon_url] => https://images.mixin.one/ndNBEpObYs7450U08oAOMnSEPzN66SL8Mh-f2pPWBDeWaKbXTPUIdrZph7yj8Z93Rl8uZ16m7Qjz-E-9JFKSsJ-F=s128 [balance] => 1 [public_key] => 17z1Rq3VsyvvXvGWiHT8YErjBoFgnhErB8 [account_name] => [account_tag] => [price_btc] => 0.00019038 [price_usd] => 1.00036293 [change_btc] => 0.013486479778200063 [change_usd] => 0.005376748815937048 [asset_key] => 815b0b1a-2764-3736-8faa-42d694fa620a [confirmations] => 6 [capitalization] => 0)Array( [type] => transfer [snapshot_id] => f4b1f8d6-004a-4d2b-997d-4d0acf1096cd [opponent_id] => aaff5bef-42fb-4c9f-90e0-29f69176b7d4 [asset_id] => 815b0b1a-2764-3736-8faa-42d694fa620a [amount] => -1 [trace_id] => b12eed67-6cf4-481f-b25b-dd41f28e1984 [memo] => hKFToUKhQcQQyUrIj0ZxOXa2CgkGTxgR6KFQozExMqFUoUw= [created_at] => 2019-04-30T01:17:02.206240549Z [counter_user_id] => aaff5bef-42fb-4c9f-90e0-29f69176b7d4)The Order ID (trace_id) is: b12eed67-6cf4-481f-b25b-dd41f28e1984取消挂单
Ocean.one将trace_id当做订单，比如上面的例子， b12eed67-6cf4-481f-b25b-dd41f28e1984 就是订单号，我们用他来取消订单。
if ( $ocmd == 'c' ) { $mixinSdk_WalletInstance = GenerateWalletSDKFromCSV(); $asset_info = $mixinSdk_WalletInstance->Wallet()->readAsset(CNB_ASSET_ID); if ( ((float) $asset_info["balance"] == 0) ) { echo "Please deposit some CNB to this Wallet!" . PHP_EOL; } else { $orderid = readline("Input the Order id ( trace_id ): "); $cMemo = base64_encode(MessagePack::pack([ 'O' => Uuid::fromString($orderid)->getBytes(), ])); $transInfos = $mixinSdk_WalletInstance->Wallet()->transfer(CNB_ASSET_ID,OCEANONE_BOT, $mixinSdk_WalletInstance->getConfig()['default']['pin'], "0.00000001", $cMemo); print_r($transInfos); }}通过读取资产余额，来确认到帐情况
Check the wallet's balance.
if ($line == 'aw') { $mixinSdk_eachAccountInstance = GenerateWalletSDKFromCSV(); $asset_info = $mixinSdk_eachAccountInstance->Wallet()->readAssets(); foreach ($asset_info as $key => $asset) { echo $asset["symbol"] . " " . $asset["asset_id"] ." ". $asset["balance"] . " ". $asset["public_key"].PHP_EOL; }}源代码执行
运行就可以开始交易了.
- php bitcoin_wallet.php 运行项目
本代码执行时的命令列表:
- o: Ocean.One Exchange
- q: Exit
Make your choose(eg: q for Exit!):
- 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
- q: Exit
完整代码