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How to trade bitcoin through PHP

Author
Mixin Network
Published
2022/04/29
Updated
2019/05/25
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How to trade bitcoin through PHP

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Exincore is introduced in last chapter, you can exchange many crypto asset at market price and receive your asset in 1 seconds. If you want to trade asset at limited price, or trade asset is not supported by ExinCore now, OceanOne is the answer.

Solution Two: List your order on Ocean.One exchange

Ocean.one is a decentralized exchange built on Mixin Network, it's almost the first time that a decentralized exchange gain the same user experience as a centralized one.

You can list any asset on OceanOne. Pay the asset you want to sell to OceanOne account, write your request in payment memo, OceanOne will list your order to market. It send asset to your wallet after your order is matched.

  • No sign up required
  • No deposit required
  • No listing process.

Pre-request:

You should have created a bot based on Mixin Network. Create one by reading PHP Bitcoin tutorial.

Install required packages

Chapter 4 introduce mixin-sdk-php to you, assume it has installed before.

Deposit USDT or Bitcoin into your Mixin Network account and read balance

The Ocean.one can match any order. Here we exchange between USDT and Bitcoin, Check the wallet's balance & address before you make order.

  • Check the address & balance, find it's Bitcoin wallet address.
  • Deposit Bitcoin to this Bitcoin wallet address.
  • Check Bitcoin balance after 100 minutes later.

Omni USDT address is same as Bitcoin address

  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");

Read orders book from Ocean.one

How to check the coin's price? You need understand what is the base coin. If you want buy Bitcoin and sell USDT, the USDT is the base coin. If you want buy USDT and sell Bitcoin, the Bitcoin is the base coin.

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;
    }
  }
}

Create a memo to prepare order

The chapter two: Echo Bitcoin introduce transfer coins. But you need to let Ocean.one know which coin you want to buy.

  • side "B" or "A", "B" for buy, "A" for Sell.
  • asset UUID of the asset you want to buy
  • price If Side is "B", Price is AssetUUID; if Side is "A", Price is the asset which transfer to Ocean.one.
function GenerateOrderMemo($side, $asset, $price) :string {
  $memo = base64_encode(MessagePack::pack([
                       'S' => $side,
                       'A' => Uuid::fromString($asset)->getBytes(),
                       'P' => $price,
                       'T' => 'L',
                       ]));
  return $memo;
}

Pay BTC to OceanOne with generated memo

Transfer Bitcoin(BTC_ASSET_ID) to Ocean.one(OCEANONE_BOT), put you target asset uuid(USDT) in the 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";}
}

If you want buy XIN, call it like below:

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";}
}

A success order output like below:

Input the Price of XIN/USDT: 112
Input the Amount of USDT: 1
hKFToUKhQcQQyUrIj0ZxOXa2CgkGTxgR6KFQozExMqFUoUw=
client id is:26b20aa5-40c0-3e00-9de0-666cfb6f2daa
Array
(
    [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

Cancel the Order

To cancel order, just pay any amount of any asset to OceanOne, and write trace_id into memo. Ocean.one take the trace_id as the order id, for example, b12eed67-6cf4-481f-b25b-dd41f28e1984 is a order id, We can use it to cancel the order.

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);
  }
}

Read Bitcoin balance

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;
  }
}

Source code usage

Build it and then run it.

  • php bitcoin_wallet.php run it.

Commands of trade with OceanOne:

  • 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

Full source code

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