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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-sdk-php, 你应该先安装过它了，这儿我们再安装 uuid, msgpack 两个软件包.
composer require ramsey/uuid
composer require rybakit/msgpack
充币到 Mixin Network, 并读出它的余额.
ExinCore 可以进行 BTC, USDT, EOS, ETH 等等交易，这儿演示如果用 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)。
请注意，比特币与 USDT 的地址是一样的。
if ($line == ‘2’) {
if (($handle = fopen(“new_users.csv”, “r”)) !== FALSE) {
while (($data = fgetcsv($handle, 1000, “,”)) !== FALSE) {
$mixinSdk_eachAccountInstance = new MixinSDK(GenerateConfigByCSV($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 :”.$asset_info[“balance”].”\n”);
}
fclose($handle);
} else print(“Create user first\n”);
}
if ($line == ‘3’) {
if (($handle = fopen(“new_users.csv”, “r”)) !== FALSE) {
while (($data = fgetcsv($handle, 1000, “,”)) !== FALSE) {
$mixinSdk_eachAccountInstance = new MixinSDK(GenerateConfigByCSV($data));
$asset_info = $mixinSdk_eachAccountInstance->Wallet()->readAsset(USDT_ASSET_ID);
print_r(“USDT wallet address is :”.$asset_info[“public_key”].”\n”);
print_r(“USDT wallet balance is :”.$asset_info[“balance”].”\n”);
}
fclose($handle);
} else print(“Create user first\n”);
}
查询 ExinCore 市场的价格信息
如果来查询 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.
function getExchangeCoins($base_coin) :string {
$client = new GuzzleHttp\Client();
$res = $client->request(‘GET’, ‘https://exinone.com/exincore/markets?base_asset=’.$base_coin, [
]);
$result = “”;
if ($res->getStatusCode() == “200”) {
// echo $res->getStatusCode() . PHP_EOL;
$resInfo = json_decode($res->getBody(), true);
echo “Asset ID | Asset Symbol | Price | Amount | Exchanges” . PHP_EOL;
$result = “Asset ID | Asset Symbol | Price | Amount | Exchanges” . PHP_EOL;
foreach ($resInfo[“data”] as $key => $coinInfo) {
echo ($coinInfo[“exchange_asset”] .” “.$coinInfo[“exchange_asset_symbol”]. “/”. $coinInfo[“base_asset_symbol”] .
” “. $coinInfo[“price”] .” “. $coinInfo[“minimum_amount”] .”-“. $coinInfo[“maximum_amount”] . ” “);
$result .= $coinInfo[“exchange_asset_symbol”]. “/”. $coinInfo[“base_asset_symbol”] .
” “. $coinInfo[“price”] .” “. $coinInfo[“minimum_amount”] .”-“. $coinInfo[“maximum_amount”] . ” “;
foreach ($coinInfo[“exchanges”] as $key => $exchange) {
echo $exchange . ” “;
$result .= $exchange . ” “;
}
echo PHP_EOL;
$result .= PHP_EOL;
}
}
return $result;
}
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。
$memo = base64_encode(MessagePack::pack([
‘A’ => Uuid::fromString($_targetAssetID)->getBytes(),
]));
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！
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”;
coinExchange(BTC_ASSET_ID,”0.0001″,USDT_ASSET_ID);
//………..
function coinExchange($_assetID,$_amount,$_targetAssetID) {
$mixinSdk = new MixinSDK(require ‘./config.php’);
// print_r();
$memo = base64_encode(MessagePack::pack([
‘A’ => Uuid::fromString($_targetAssetID)->getBytes(),
]));
$BotInfo = $mixinSdk->Wallet()->transfer($_assetID,EXIN_BOT,
$mixinSdk->getConfig()[‘default’][‘pin’],$_amount,$memo);
print_r($BotInfo);
}
如果你想卖出比特币买入 USDT, 调用方式如下：
coinExchange($config,BTC_ASSET_ID,”0.0001″,USDT_ASSET_ID);
如果你想卖出 USDT 买入比特币, 调用方式如下：
coinExchange($config,USDT_ASSET_ID,”1″,BTC_ASSET_ID);
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！
readUserSnapshots 读取钱包的交易记录。
$limit = 20;
$offset = ‘2019-03-10T01:58:25.362528Z’;
$snapInfo = $mixinSdk_BotInstance->Wallet()->readUserSnapshots($limit, $offset);
// print_r($networkInfo2);
foreach ($snapInfo as $record) {
// echo $key . PHP_EOL;
// print_r($record);
if ($record[‘amount’] > 0 and $record[‘memo’] != ”) {
echo “————MEMO:-coin–exchange————–” . PHP_EOL;
echo “memo: ” . $record[‘memo’] . PHP_EOL;
// print_r($dtPay->memo);
echo “You Get Coins: “. $record[‘asset_id’]. ” ” . $record[‘amount’] . PHP_EOL;
$memoUnpack = MessagePack::unpack(base64_decode($record[‘memo’]));
$feeAssetID = Uuid::fromBytes($memoUnpack[‘FA’])->toString();
$OrderID = Uuid::fromBytes($memoUnpack[‘O’])->toString();
if ($memoUnpack[‘C’] == 1000) {
echo “Successful Exchange:”. PHP_EOL;
echo “Fee asset ID: ” . $feeAssetID . ” fee is :” . $memoUnpack[‘F’] . PHP_EOL;
echo “Order ID: ” . $OrderID . ” Price is :” . $memoUnpack[‘P’] . PHP_EOL;
} else print_r($memoUnpack);
echo “————–memo-record end—————” . PHP_EOL;
}
}
一次成功的交易如下：
————MEMO:-coin–exchange————–
memo: hqFDzQPooVCnMzg3Mi45N6FGqTAuMDAwNzc0NqJGQcQQgVsLGidkNzaPqkLWlPpiCqFUoUahT8QQIbfeL6p5RVOcEP0mLb+t+g==
You Get Coins: 815b0b1a-2764-3736-8faa-42d694fa620a 0.3857508
Successful Exchange:
Fee asset ID: 815b0b1a-2764-3736-8faa-42d694fa620a fee is :0.0007746
Order ID: 21b7de2f-aa79-4553-9c10-fd262dbfadfa Price is :3872.97
————–memo-record end—————
读取币的余额
通过读取币的余额，来确认交易情况！
$mixinSdk = new MixinSDK(require ‘./config.php’);
$asset_info = $mixinSdk->Wallet()->readAsset(USDT_ASSET_ID);
print_r(“USDT wallet balance is :”.$asset_info[“balance”].”\n”);
源代码执行
执行 php call_apis.php 即可开始交易了.
1: Create user and update PIN
2: Read Bitcoin balance & address
3: Read USDT balance & address
4: Read EOS balance
5: Read EOS address
6: Transfer Bitcoin from bot to new user
7: Transfer Bitcoin from new user to Master
8: Withdraw bot’s Bitcoin
9: Withdraw bot’s EOS
qu: Read market price(USDT)
qb: Read market price(BTC)
b: Balance of bot (USDT & BTC)
s: Read Snapshots
tb: Transfer 0.0001 BTC buy USDT
tu: Transfer $1 USDT buy BTC
q: Exit
完整代码
