Creating Token with several properties

Hey guys,
I´ve just started to learn myself into making an own cryptocurrency. I´ve been playing around with some random coins and I just found this code from some github:

pragma solidity ^0.8.2;

contract Token {
    mapping(address => uint) public balances;
    mapping(address => mapping(address => uint)) public allowance;
    uint public totalSupply = 10000 * 10 ** 18;
    string public name = "My Token";
    string public symbol = "TKN";
    uint public decimals = 18;
    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
    constructor() {
        balances[msg.sender] = totalSupply;
    function balanceOf(address owner) public returns(uint) {
        return balances[owner];
    function transfer(address to, uint value) public returns(bool) {
        require(balanceOf(msg.sender) >= value, 'balance too low');
        balances[to] += value;
        balances[msg.sender] -= value;
       emit Transfer(msg.sender, to, value);
        return true;
    function transferFrom(address from, address to, uint value) public returns(bool) {
        require(balanceOf(from) >= value, 'balance too low');
        require(allowance[from][msg.sender] >= value, 'allowance too low');
        balances[to] += value;
        balances[from] -= value;
        emit Transfer(from, to, value);
        return true;   
    function approve(address spender, uint value) public returns (bool) {
        allowance[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;   

As this is already a working code I wanted to know if this is even a safe code I can use to further develop it or if there are better solution.
Also I wanted to add a tax function on transaction if anyone could share how that works :slight_smile:
I also want that some of the tokens get sent to a different wallet that automatically distribute out coins to people that complete a task or stake. Any idea how to do that? Would be awesome to hear some replys !

Hi, welcome! :wave:

Sorry, not sure, you should write test cases for your contract and you can also ask some teams to audit your contract.
If you only want to make an ERC20 token, I think you can have a look at the contract in the OpenZeppelin repo: ERC20.sol I think it is much safer.

I am not sure for this, iirc, you can have a look at the Moon token, and you can also have a search in the forum, there are some talks about the deflationary token.

I think the action of complete or stake will trigger the contract to transfer tokens to the caller account, maybe just Your_Token.transfer(msg.sender, Amount) is enough.