Create BEP20.sol

blockchain_integration/pi_network/pi-network-interoperability/bridge-contracts/binance-smart-chain/BEP20.sol

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+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol";
+
+contract BEP20 {
+    string public name;
+    string public symbol;
+    uint256 public totalSupply;
+    uint256 public decimals;
+    mapping(address => uint256) public balances;
+    mapping(address => mapping(address => uint256)) public allowances;
+
+    event Transfer(address indexed from, address indexed to, uint256 value);
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+
+    constructor(string memory _name, string memory _symbol, uint256 _totalSupply, uint256 _decimals) public {
+        name = _name;
+        symbol = _symbol;
+        totalSupply = _totalSupply;
+        decimals = _decimals;
+    }
+
+    function transfer(address recipient, uint256 amount) public {
+        require(balances[msg.sender] >= amount, "Insufficient balance");
+        balances[msg.sender] -= amount;
+        balances[recipient] += amount;
+        emit Transfer(msg.sender, recipient, amount);
+    }
+
+    function approve(address spender, uint256 amount) public {
+        allowances[msg.sender][spender] = amount;
+        emit Approval(msg.sender, spender, amount);
+    }
+
+    function transferFrom(address sender, address recipient, uint256 amount) public {
+        require(allowances[sender][msg.sender] >= amount, "Insufficient allowance");
+        require(balances[sender] >= amount, "Insufficient balance");
+        balances[sender] -= amount;
+        balances[recipient] += amount;
+        allowances[sender][msg.sender] -= amount;
+        emit Transfer(sender, recipient, amount);
+    }
+
+    function balanceOf(address account) public view returns (uint256) {
+        return balances[account];
+    }
+
+    function allowance(address owner, address spender) public view returns (uint256) {
+        return allowances[owner][spender];
+    }
+}