How to list any ERC20 token on decentralized market through PHP

OceanOne is introduced in last chapter, you can trade Bitcoin. All kinds of crypto asset on Mixin Network can be listed on OceanOne.All ERC20 token and EOS token can be listed. Following example will show you how to list a ERC20 token. You can list other token after read the tutorial.

There is a ERC20 token called Benz. It is deposited into Mixin Network. You can search all transaction history from Mixin Network browser

Pre-request:

Deposit some coin to your wallet, and then use getAssets API fetch the asset UUID which Mixin Network gave it.

Get the ERC-20 compliant coin UUID

The getAssets API return json data, for example:

• asset_id UUID of this coin
• public_key The wallet address for this coin
• symbol Coin name, Eg: Benz.

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;
  }
}

The detail information of getAssets is output like below:

Make your choose:aw
run...
client id is:26b20aa5-40c0-3e00-9de0-666cfb6f2daa
Benz   2b9c216c-ef60-398d-a42a-eba1b298581d   799   0x9A4F6c67444cd6558905ef5B04a4c429b9538A9d
EOS   6cfe566e-4aad-470b-8c9a-2fd35b49c68d   0
CNB   965e5c6e-434c-3fa9-b780-c50f43cd955c   4.72599997   0x9A4F6c67444cd6558905ef5B04a4c429b9538A9d
BTC   c6d0c728-2624-429b-8e0d-d9d19b6592fa   0   17z1Rq3VsyvvXvGWiHT8YErjBoFgnhErB8
XIN   c94ac88f-4671-3976-b60a-09064f1811e8   0.01   0x9A4F6c67444cd6558905ef5B04a4c429b9538A9d

Make the limit order

• Limit Order to Buy at or below the market.
• Limit Order to Sell at or above the market.

OceanOne support three base coin: USDT, XIN, BTC, that mean you can sell or buy it between USDT, XIN, BTC, so, you have there order: Benz/USDT, Benz/XIN, Benz/BTC, here show you how to make the sell order with USDT.

Make the limit order to sell.

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";}
}

Make the limit order to buy.

After the order commit, wait 1 minute to let the OceanOne exchange initialize it.

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";}
}

Read orders book from Ocean.one

Now, check the orders-book.

    if ( $ocmd == '2') { getOceanOneMarketInfos(ERC20_BENZ,USDT_ASSET_ID);}
    function getOceanOneMarketInfos($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;
        }
      }
    }

Command of make orders

Commands list of this source code:

• trb:Transfer ERC20 from Bot to Wallet
• trm:Transfer ERC20 from Wallet to Master
• o: Ocean.One Exchange

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

• x: Orders-Book of ERC20/USDT
• x1: Buy ERC20 pay USDT
• x2: Sell ERC20 get USDT
• c: Cancel the order
• q: Exit

Full source code