Sypher

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

/**
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╚══════╝   ╚═╝   ╚═╝     ╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝

Developed by TUKYO GAMES
Website: https://desypher.net/
Telegram: https://t.me/tukyogames
GitHub: https://github.com/Tukyo/deSypher
*/

contract Sypher {
    // Contract Details
    string public name = "Sypher";
    string public symbol = "SYPHER";
    uint8 public decimals = 18;
    uint256 public totalSupply = 1000000 * 10 ** uint256(decimals);
    
    // Mappings
    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

    // Events
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    event OwnershipRenounced(address indexed previousOwner);

    // Owner state
    address public owner;

    constructor() {
        owner = msg.sender;
        balanceOf[msg.sender] = totalSupply;
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Caller is not the owner");
        _;
    }

    // Functions
    function approve(address spender, uint256 value) public returns (bool success) {
        allowance[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        allowance[msg.sender][spender] += addedValue;
        emit Approval(msg.sender, spender, allowance[msg.sender][spender]);
        return true;
    }
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        require(allowance[msg.sender][spender] >= subtractedValue, "Decreased allowance below zero");
        allowance[msg.sender][spender] -= subtractedValue;
        emit Approval(msg.sender, spender, allowance[msg.sender][spender]);
        return true;
    }
    function transfer(address to, uint256 value) public returns (bool success) {
        require(balanceOf[msg.sender] >= value, "Insufficient balance");
        balanceOf[msg.sender] -= value;
        balanceOf[to] += value;
        emit Transfer(msg.sender, to, value);
        return true;
    }
    function transferFrom(address from, address to, uint256 value) public returns (bool success) {
        require(value <= balanceOf[from], "Insufficient balance");
        require(value <= allowance[from][msg.sender], "Insufficient allowance");
        
        balanceOf[from] -= value;
        balanceOf[to] += value;
        allowance[from][msg.sender] -= value;
        emit Transfer(from, to, value);
        return true;
    }
    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0), "New owner is not a valid address");
        emit OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }
    function renounceOwnership() public onlyOwner {
        emit OwnershipRenounced(owner);
        owner = address(0);
    }
}

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