Ziktalk

contract NDCoinERC20 {

    event Transfer(address indexed from, address indexed to, uint tokens);
    event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
    event Burn(address indexed tokenOwner, uint tokens);

    string public constant name = "Ziktalk";
    string public constant symbol = "ZIK";
    uint8 public constant decimals = 18;

    mapping(address => uint256) balances;

    mapping(address => mapping (address => uint256)) allowed;

    uint256 totalSupply_;

    constructor(uint256 total) {
      totalSupply_ = total;
      balances[msg.sender] = totalSupply_;
    }

    function totalSupply() public view returns (uint256) {
      return totalSupply_;
    }

    function balanceOf(address tokenOwner) public view returns (uint) {
        return balances[tokenOwner];
    }

    function transfer(address receiver, uint numTokens) public returns (bool) {
        require(numTokens <= balances[msg.sender]);
        balances[msg.sender] -= numTokens;
        balances[receiver] += numTokens;
        emit Transfer(msg.sender, receiver, numTokens);
        return true;
    }

    function approve(address delegate, uint numTokens) public returns (bool) {
        allowed[msg.sender][delegate] = numTokens;
        emit Approval(msg.sender, delegate, numTokens);
        return true;
    }

    function allowance(address owner, address delegate) public view returns (uint) {
        return allowed[owner][delegate];
    }

    function transferFrom(address owner, address buyer, uint numTokens) public returns (bool) {
        require(numTokens <= balances[owner]);
        require(numTokens <= allowed[owner][msg.sender]);

        balances[owner] -= numTokens;
        allowed[owner][msg.sender] -= numTokens;
        balances[buyer] += numTokens;
        emit Transfer(owner, buyer, numTokens);
        return true;
    }

    function burn(uint256 _value) public returns (bool) {
        // Requires that the message sender has enough tokens to burn
        require(_value <= balances[msg.sender]);

        // Subtracts _value from callers balance and total supply
        balances[msg.sender] = balances[msg.sender] - _value;
        totalSupply_ = totalSupply_ - _value;

        // Emits burn and transfer events, make sure you have them in your contracts
        emit Burn(msg.sender, _value);
        emit Transfer(msg.sender, address(0),_value);

        // Since you cant actually burn tokens on the blockchain, sending to address 0, which none has the private keys to, removes them from the circulating supply
        return true;
    }
}

{
  "compilationTarget": {
    "NDCoinERC20.sol": "NDCoinERC20"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}