Contract Diff Checker

Contract Source Code:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract MHBToken {
    string public name = "MHB";
    string public symbol = "ME";
    uint8 public decimals = 18;
    uint256 public totalSupply = 1000000000 * 10**18; // 1 billion tokens with 18 decimals

    mapping(address => uint256) private balances;
    mapping(address => mapping(address => uint256)) private allowances;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    constructor() {
        balances[msg.sender] = totalSupply; // Assign the entire supply to the contract deployer
        emit Transfer(address(0), msg.sender, totalSupply);
    }

    function balanceOf(address account) public view returns (uint256) {
        return balances[account];
    }

    function transfer(address recipient, uint256 amount) public returns (bool) {
        require(balances[msg.sender] >= amount, "Insufficient balance");
        balances[msg.sender] -= amount;
        balances[recipient] += amount;
        emit Transfer(msg.sender, recipient, amount);
        return true;
    }

    function approve(address spender, uint256 amount) public returns (bool) {
        allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function allowance(address owner, address spender)
        public
        view
        returns (uint256)
    {
        return allowances[owner][spender];
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public returns (bool) {
        require(balances[sender] >= amount, "Insufficient balance");
        require(allowances[sender][msg.sender] >= amount, "Allowance exceeded");

        balances[sender] -= amount;
        balances[recipient] += amount;
        allowances[sender][msg.sender] -= amount;

        emit Transfer(sender, recipient, amount);
        return true;
    }
}