Can't verify contract on BSC scan

@Skyge any chance you can help this one? I spent hours trying to flatten and recode. this is the original code in remix:


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

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol";

contract Token is ERC20 {
    constructor () public ERC20("NomNom", "NOMNOM") {
        _mint(msg.sender, 666666666 * (10 ** uint256(decimals())));
    }
} 

contract: 0x671965051b0A9b5F2187cD35bE748c6C27EA4C4C

Thanks in advanced I “liked” all your posts

@nomnom For next time, please search at first and then ask question.
You can have a look at this tutorial: Verify ERC20 token on Etherscan that was deployed through Remix: Step by Step Guide - General / Guides and Tutorials - OpenZeppelin Community

1 Like

Thank you I am truly speechless. I was up until almost 04:00 trying to hardcode, recode, debug, flatten, compile/recompile …and about to smash my computer.

@Skyge you are a literal dev god.

1 Like

no DMs on this platform?? I want to give you a % of my tokens if you’re interested. I plan to market rn I’m just networking. Thanks, again. You’re the best!

1 Like

@Skyge Can you please help me to verify my contract on BSCScan. I am keep getting error.

Contract address: 0xfF692ce116fA451AC90F62A60f709c62f7170F9C

Here is my contract code:

pragma solidity ^0.8.0;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v4.2/contracts/token/ERC20/ERC20.sol";

contract FOXBNB is ERC20 {
    constructor(uint256 initialSupply) public ERC20 ("FOXBNB","FOXBNB"){
        _mint(msg.sender,initialSupply);
        
    }
}

Thank you very much in advance!

1 Like

Hi, welcome! :wave:

Sorry, I am not familiar with the BSC-Chain, maybe you should ask for help in their forum: Home | Binance Chain Forum

And they have a documentation about how to verify contracts, maybe you can have a look at it:

If you deployed your contract with Remix, maybe you can have a look at this tutorial: Verify erc20 token on etherscan that was deployed through remix:step by step guide

And for the next time, please search at the forum at first, and then ask questions, thanks!
How do I ask a good question? - General / Meta - OpenZeppelin Community

1 Like

0xd5bb770068c2f2759845a558dd71e3bdbb6947f4

pragma solidity ^0.8.0;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol";

contract PlayCoin is ERC20 {

constructor (uint256 initialsupply) public ERC20 ("PlayCoin","PLN"){
    
    _mint(msg.sender,initialsupply);
}

}

please verify this

Hi, welcome! :wave:

Please try to verify your contract by yourself at first. I have provided some ways above.


Hello, tried to make everything you said and still can't verify my account on bscscan.
Can you help me?

Hi, welcome! :wave:

So have you followed the tutorial I shared above?

1 Like

Yes, i'm very new in it. Can i share here my contract and code?

**Here is the error message I get:***Eror! Unable to generate Contract ByteCode and ABI **(General Exception, unable to get compiled [bytecode])

Here is my code:

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;
 
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return payable(msg.sender);
    }
 
    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}
 
abstract contract Ownable is Context {
    address private _owner;
 
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
 
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }
 
    function owner() public view virtual returns (address) {
        return _owner;
    }
 
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
 
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
 
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
 
interface IERC20 {
    function totalSupply() external view returns (uint256);
 
    function balanceOf(address account) external view returns (uint256);
 
    function transfer(address recipient, uint256 amount) external returns (bool);
 
    function allowance(address owner, address spender) external view returns (uint256);
 
    function approve(address spender, uint256 amount) external returns (bool);
 
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
 
    event Transfer(address indexed from, address indexed to, uint256 value);
 
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
 
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;
 
    mapping (address => uint256) private _balances;
 
    mapping (address => mapping (address => uint256)) private _allowances;
 
    uint256 private _totalSupply;
 
    string private _name;
    string private _symbol;
    uint8 private _decimals;
 
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }
 
    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 _decimals;
    }
 
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
 
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
 
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
 
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
 
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
 
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }
 
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }
 
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }
 
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
 
        _beforeTokenTransfer(sender, recipient, amount);
 
        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }
 
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
 
        _beforeTokenTransfer(address(0), account, amount);
 
        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
        /*
            NOTE: Mint function in this contract or any cake rewards contract is necessary for the tokenomics
            to work. It is not intended to mint any tokens except for the rewards tracker and CAKE-lps for marketing.
        */
    }
 
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
 
        _beforeTokenTransfer(account, address(0), amount);
 
        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }
 
    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 _setupDecimals(uint8 decimals_) internal virtual {
        _decimals = decimals_;
    }
 
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
 
 
interface IDividendPayingToken {
  function dividendOf(address _owner) external view returns(uint256);
 
  function withdrawDividend() external;
 
  event DividendsDistributed(
    address indexed from,
    uint256 weiAmount
  );
 
  event DividendWithdrawn(
    address indexed to,
    uint256 weiAmount
  );
}
 
interface IDividendPayingTokenOptional {
  function withdrawableDividendOf(address _owner) external view returns(uint256);
 
  function withdrawnDividendOf(address _owner) external view returns(uint256);
 
  function accumulativeDividendOf(address _owner) external view returns(uint256);
}
 
contract DividendPayingToken is ERC20, IDividendPayingToken, IDividendPayingTokenOptional {
  using SafeMath for uint256;
  using SafeMathUint for uint256;
  using SafeMathInt for int256;
 
  uint256 constant internal magnitude = 2**128;
 
  uint256 internal magnifiedDividendPerShare;
  uint256 internal lastAmount;
 
  address public dividendToken;
 
 
  mapping(address => int256) internal magnifiedDividendCorrections;
  mapping(address => uint256) internal withdrawnDividends;
  mapping(address => bool) _isAuth;
 
  uint256 public totalDividendsDistributed;
 
  modifier onlyAuth() {
    require(_isAuth[msg.sender], "Auth: caller is not the authorized");
    _;
  }
 
  constructor(string memory _name, string memory _symbol, address _token) ERC20(_name, _symbol) {
    dividendToken = _token;
    _isAuth[msg.sender] = true;
  }
 
  function setAuth(address account) external onlyAuth{
      _isAuth[account] = true;
  }
 
 
  function distributeDividends(uint256 amount) public {
    require(totalSupply() > 0);
 
    if (amount > 0) {
      magnifiedDividendPerShare = magnifiedDividendPerShare.add(
        (amount).mul(magnitude) / totalSupply()
      );
      emit DividendsDistributed(msg.sender, amount);
 
      totalDividendsDistributed = totalDividendsDistributed.add(amount);
    }
  }
 
  function withdrawDividend() public virtual override {
    _withdrawDividendOfUser(payable(msg.sender));
  }
 
  function setDividendTokenAddress(address newToken) external virtual onlyAuth{
      dividendToken = newToken;
  }
 
  function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
    uint256 _withdrawableDividend = withdrawableDividendOf(user);
    if (_withdrawableDividend > 0) {
      withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
      emit DividendWithdrawn(user, _withdrawableDividend);
      bool success = IERC20(dividendToken).transfer(user, _withdrawableDividend);
 
      if(!success) {
        withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend);
        return 0;
      }
 
      return _withdrawableDividend;
    }
 
    return 0;
  }
 
 
  function dividendOf(address _owner) public view override returns(uint256) {
    return withdrawableDividendOf(_owner);
  }
 
  function withdrawableDividendOf(address _owner) public view override returns(uint256) {
    return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
  }
 
  function withdrawnDividendOf(address _owner) public view override returns(uint256) {
    return withdrawnDividends[_owner];
  }
 
 
  function accumulativeDividendOf(address _owner) public view override returns(uint256) {
    return magnifiedDividendPerShare.mul(balanceOf(_owner)).toInt256Safe()
      .add(magnifiedDividendCorrections[_owner]).toUint256Safe() / magnitude;
  }
 
  function _transfer(address from, address to, uint256 value) internal virtual override {
    require(false);
 
    int256 _magCorrection = magnifiedDividendPerShare.mul(value).toInt256Safe();
    magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from].add(_magCorrection);
    magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(_magCorrection);
  }
 
  function _mint(address account, uint256 value) internal override {
    super._mint(account, value);
 
    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
      .sub( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
    /*
            NOTE: Mint function in this contract or any cake rewards contract is necessary for the tokenomics
            to work. It is not intended to mint any tokens except for the rewards tracker and CAKE-lps for marketing.
    */
  }
 
  function _burn(address account, uint256 value) internal override {
    super._burn(account, value);
 
    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
      .add( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
  }
 
  function _setBalance(address account, uint256 newBalance) internal {
    uint256 currentBalance = balanceOf(account);
 
    if(newBalance > currentBalance) {
      uint256 mintAmount = newBalance.sub(currentBalance);
      _mint(account, mintAmount);
    } else if(newBalance < currentBalance) {
      uint256 burnAmount = currentBalance.sub(newBalance);
      _burn(account, burnAmount);
    }
  }
}
 
////////////////////////////////
///////// Interfaces ///////////
////////////////////////////////
 
interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);
 
    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);
 
    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);
 
    function createPair(address tokenA, address tokenB) external returns (address pair);
 
    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}
 
interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);
 
    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);
 
    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);
 
    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);
 
    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
 
    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);
 
    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);
 
    function mint(address to) external returns (uint liquidity);
        /*
            NOTE: Mint function in this contract or any cake rewards contract is necessary for the tokenomics
            to work. It is not intended to mint any tokens except for the rewards tracker and CAKE-lps for marketing.
        */
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;
 
    function initialize(address, address) external;
}
 
interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
 
    function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); 
function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); 
function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); 
function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); 
function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); 
function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); 
function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); 
function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); 
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); 
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); 
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); 
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); 
 
    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
 
interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); 
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); 
 
 
function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; 
function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; 
function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; 
 
}
 
////////////////////////////////
////////// Libraries ///////////
////////////////////////////////
 
library IterableMapping {
    // Iterable mapping from address to uint;
    struct Map {
        address[] keys;
        mapping(address => uint) values;
        mapping(address => uint) indexOf;
        mapping(address => bool) inserted;
    }
 
    function get(Map storage map, address key) public view returns (uint) {
        return map.values[key];
    }
 
    function getIndexOfKey(Map storage map, address key) public view returns (int) {
        if(!map.inserted[key]) {
            return -1;
        }
        return int(map.indexOf[key]);
    }
 
    function getKeyAtIndex(Map storage map, uint index) public view returns (address) {
        return map.keys[index];
    }
 
 
 
    function size(Map storage map) public view returns (uint) {
        return map.keys.length;
    }
 
    function set(Map storage map, address key, uint val) public {
        if (map.inserted[key]) {
            map.values[key] = val;
        } else {
            map.inserted[key] = true;
            map.values[key] = val;
            map.indexOf[key] = map.keys.length;
            map.keys.push(key);
        }
    }
 
    function remove(Map storage map, address key) public {
        if (!map.inserted[key]) {
            return;
        }
 
        delete map.inserted[key];
        delete map.values[key];
 
        uint index = map.indexOf[key];
        uint lastIndex = map.keys.length - 1;
        address lastKey = map.keys[lastIndex];
 
        map.indexOf[lastKey] = index;
        delete map.indexOf[key];
 
        map.keys[index] = lastKey;
        map.keys.pop();
    }
}
 
library SafeMath {
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }
 
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }
 
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }
 
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }
 
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }
 
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
 
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }
 
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }
 
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }
 
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }
 
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
 
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }
 
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
 
library SafeMathInt {
  function mul(int256 a, int256 b) internal pure returns (int256) {
    // Prevent overflow when multiplying INT256_MIN with -1
    // https://github.com/RequestNetwork/requestNetwork/issues/43
    require(!(a == - 2**255 && b == -1) && !(b == - 2**255 && a == -1));
 
    int256 c = a * b;
    require((b == 0) || (c / b == a));
    return c;
  }
 
  function div(int256 a, int256 b) internal pure returns (int256) {
    // Prevent overflow when dividing INT256_MIN by -1
    // https://github.com/RequestNetwork/requestNetwork/issues/43
    require(!(a == - 2**255 && b == -1) && (b > 0));
 
    return a / b;
  }
 
  function sub(int256 a, int256 b) internal pure returns (int256) {
    require((b >= 0 && a - b <= a) || (b < 0 && a - b > a));
 
    return a - b;
  }
 
  function add(int256 a, int256 b) internal pure returns (int256) {
    int256 c = a + b;
    require((b >= 0 && c >= a) || (b < 0 && c < a));
    return c;
  }
 
  function toUint256Safe(int256 a) internal pure returns (uint256) {
    require(a >= 0);
    return uint256(a);
  }
}
 
library SafeMathUint {
  function toInt256Safe(uint256 a) internal pure returns (int256) {
    int256 b = int256(a);
    require(b >= 0);
    return b;
  }
}
 
////////////////////////////////
/////////// Tokens /////////////
////////////////////////////////
 
contract WaferyCake is ERC20, Ownable {
    using SafeMath for uint256;
 
    IUniswapV2Router02 public uniswapV2Router;
    address public immutable uniswapV2Pair;
 
    address public firstDividendToken;
    address public deadAddress = 0x000000000000000000000000000000000000dEaD;
 
    bool private swapping;
    bool public tradingIsEnabled = false;
    bool public marketingEnabled = true;
    bool public swapAndLiquifyEnabled = true;
    bool public firstDividendEnabled = true;
 
    FIRSTDividendTracker public firstDividendTracker;
 
    address public marketingWallet;
 
    uint256 public maxSellTransactionAmount = totalSupply().mul(5).div(1000);
    uint256 public maxBuyTranscationAmount = totalSupply().mul(1).div(100);
    uint256 public maxWalletBalance = totalSupply().mul(1).div(100);
    uint256 public swapTokensAtAmount = 20 * 10**6 * 10**18;
 
    uint256 public liquidityFee = 3;
    uint256 public previousLiquidityFee;
    uint256 public firstDividendRewardsFee = 9;
    uint256 public previousFirstDividendRewardsFee;
    uint256 public marketingFee = 3;
    uint256 public previousMarketingFee;
    uint256 public totalFees = firstDividendRewardsFee.add(marketingFee).add(liquidityFee);
 
 
    uint256 public sellFeeIncreaseFactor = 100;
 
    uint256 public gasForProcessing = 400000;
 
    address public presaleAddress;
 
    mapping (address => bool) private isExcludedFromFees;
 
    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
    // could be subject to a maximum transfer amount
    mapping (address => bool) public automatedMarketMakerPairs;
 
    event UpdatefirstDividendTracker(address indexed newAddress, address indexed oldAddress);
 
    event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);
 
    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event MarketingEnabledUpdated(bool enabled);
    event FirstDividendEnabledUpdated(bool enabled);
 
    event ExcludeFromFees(address indexed account, bool isExcluded);
    event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
 
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
 
    event MarketingWalletUpdated(address indexed newMarketingWallet, address indexed oldMarketingWallet);
 
    event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);
 
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 bnbReceived,
        uint256 tokensIntoLiqudity
    );
 
    event SendDividends(
    	uint256 amount
    );
 
    event ProcessedfirstDividendTracker(
    	uint256 iterations,
    	uint256 claims,
        uint256 lastProcessedIndex,
    	bool indexed automatic,
    	uint256 gas,
    	address indexed processor
    );
 
    constructor() ERC20("WaferyCake", "WFCAKE") {
    	firstDividendTracker = new FIRSTDividendTracker();
 
    	marketingWallet = 0x4A4E9B5882f575F79f138af73153707c2789B492;
    	firstDividendToken = 0x0E09FaBB73Bd3Ade0a17ECC321fD13a19e81cE82;
 
    	IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
         // Create a uniswap pair for this new token
        address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());
 
        uniswapV2Router = _uniswapV2Router;
        uniswapV2Pair = _uniswapV2Pair;
 
        _setAutomatedMarketMakerPair(_uniswapV2Pair, true);
 
        excludeFromDividend(address(firstDividendTracker));
        excludeFromDividend(address(this));
        excludeFromDividend(address(_uniswapV2Router));
        excludeFromDividend(deadAddress);
 
        // exclude from paying fees or having max transaction amount
        excludeFromFees(marketingWallet, true);
        excludeFromFees(address(this), true);
        excludeFromFees(deadAddress, true);
        excludeFromFees(owner(), true);
 
        setAuthOnDividends(owner());
 
        /*
            _mint is an internal function in ERC20.sol that is only called here,
            and CANNOT be called ever again
        */
        _mint(owner(), 100000000000 * (10**18));
    }
 
    receive() external payable {
 
  	}
 
  	function whitelistDxSale(address _presaleAddress, address _routerAddress) external onlyOwner {
  	    presaleAddress = _presaleAddress;
        firstDividendTracker.excludeFromDividends(_presaleAddress);
        excludeFromFees(_presaleAddress, true);
 
        firstDividendTracker.excludeFromDividends(_routerAddress);
        excludeFromFees(_routerAddress, true);
  	}
 
  	function prepareForPartherOrExchangeListing(address _partnerOrExchangeAddress) external onlyOwner {
  	    firstDividendTracker.excludeFromDividends(_partnerOrExchangeAddress);
        excludeFromFees(_partnerOrExchangeAddress, true);
  	}
 
  	function setWalletBalance(uint256 _maxWalletBalance) external onlyOwner{
  	    maxWalletBalance = _maxWalletBalance;
  	}
 
  	function setMaxBuyTransaction(uint256 _maxTxn) external onlyOwner {
  	    maxBuyTranscationAmount = _maxTxn * (10**18);
  	}
 
  	function setMaxSellTransaction(uint256 _maxTxn) external onlyOwner {
  	    maxSellTransactionAmount = _maxTxn * (10**18);
  	}
 
  	function updateFirstDividendToken(address _newContract) external onlyOwner {
  	    firstDividendToken = _newContract;
  	    firstDividendTracker.setDividendTokenAddress(_newContract);
  	}
 
  	function updateMarketingWallet(address _newWallet) external onlyOwner {
  	    require(_newWallet != marketingWallet, "WaferyCake: The marketing wallet is already this address");
        excludeFromFees(_newWallet, true);
        emit MarketingWalletUpdated(marketingWallet, _newWallet);
  	    marketingWallet = _newWallet;
  	}
 
  	function setSwapTokensAtAmount(uint256 _swapAmount) external onlyOwner {
  	    swapTokensAtAmount = _swapAmount * (10**18);
  	}
 
  	function setSellTransactionMultiplier(uint256 _multiplier) external onlyOwner {
  	    sellFeeIncreaseFactor = _multiplier;
  	}
 
 
    function setTradingIsEnabled(bool _enabled) external onlyOwner {
        tradingIsEnabled = _enabled;
    }
 
    function setAuthOnDividends(address account) public onlyOwner{
        firstDividendTracker.setAuth(account);
    }
 
 
    function setFirstDividendEnabled(bool _enabled) external onlyOwner {
        require(firstDividendEnabled != _enabled, "Can't set flag to same status");
        if (_enabled == false) {
            previousFirstDividendRewardsFee = firstDividendRewardsFee;
            firstDividendRewardsFee = 0;
            firstDividendEnabled = _enabled;
        } else {
            firstDividendRewardsFee = previousFirstDividendRewardsFee;
            totalFees = firstDividendRewardsFee.add(marketingFee).add(liquidityFee);
            firstDividendEnabled = _enabled;
        }
 
        emit FirstDividendEnabledUpdated(_enabled);
    }
 
    function setMarketingEnabled(bool _enabled) external onlyOwner {
        require(marketingEnabled != _enabled, "Can't set flag to same status");
        if (_enabled == false) {
            previousMarketingFee = marketingFee;
            marketingFee = 0;
            marketingEnabled = _enabled;
        } else {
            marketingFee = previousMarketingFee;
            totalFees = marketingFee.add(firstDividendRewardsFee).add(liquidityFee);
            marketingEnabled = _enabled;
        }
 
        emit MarketingEnabledUpdated(_enabled);
    }
 
    function setSwapAndLiquifyEnabled(bool _enabled) external onlyOwner {
        require(swapAndLiquifyEnabled != _enabled, "Can't set flag to same status");
        if (_enabled == false) {
            previousLiquidityFee = liquidityFee;
            liquidityFee = 0;
            swapAndLiquifyEnabled = _enabled;
        } else {
            liquidityFee = previousLiquidityFee;
            totalFees = marketingFee.add(firstDividendRewardsFee).add(liquidityFee);
            swapAndLiquifyEnabled = _enabled;
        }
 
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }
 
 
    function updatefirstDividendTracker(address newAddress) external onlyOwner {
        require(newAddress != address(firstDividendTracker), "WaferyCake: The dividend tracker already has that address");
 
        FIRSTDividendTracker newfirstDividendTracker = FIRSTDividendTracker(payable(newAddress));
 
        require(newfirstDividendTracker.owner() == address(this), "WaferyCake: The new dividend tracker must be owned by the WaferyCake token contract");
 
        newfirstDividendTracker.excludeFromDividends(address(newfirstDividendTracker));
        newfirstDividendTracker.excludeFromDividends(address(this));
        newfirstDividendTracker.excludeFromDividends(address(uniswapV2Router));
        newfirstDividendTracker.excludeFromDividends(address(deadAddress));
 
        emit UpdatefirstDividendTracker(newAddress, address(firstDividendTracker));
 
        firstDividendTracker = newfirstDividendTracker;
    }
 
    function updateFirstDividendRewardFee(uint8 newFee) external onlyOwner {
        firstDividendRewardsFee = newFee;
        totalFees = firstDividendRewardsFee.add(marketingFee).add(liquidityFee);
    }
 
    function updateMarketingFee(uint8 newFee) external onlyOwner {
        marketingFee = newFee;
        totalFees = marketingFee.add(firstDividendRewardsFee).add(liquidityFee);
    }
 
    function updateLiquidityFee(uint8 newFee) external onlyOwner {
        liquidityFee = newFee;
        totalFees = marketingFee.add(firstDividendRewardsFee).add(liquidityFee);
    }
 
    function updateUniswapV2Router(address newAddress) external onlyOwner {
        require(newAddress != address(uniswapV2Router), "WaferyCake: The router already has that address");
        emit UpdateUniswapV2Router(newAddress, address(uniswapV2Router));
        uniswapV2Router = IUniswapV2Router02(newAddress);
    }
 
    function excludeFromFees(address account, bool excluded) public onlyOwner {
        require(isExcludedFromFees[account] != excluded, "WaferyCake: Account is already exluded from fees");
        isExcludedFromFees[account] = excluded;
 
        emit ExcludeFromFees(account, excluded);
    }
 
    function excludeFromDividend(address account) public onlyOwner {
        firstDividendTracker.excludeFromDividends(address(account));
    }
 
    function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) external onlyOwner {
        for(uint256 i = 0; i < accounts.length; i++) {
            isExcludedFromFees[accounts[i]] = excluded;
        }
 
        emit ExcludeMultipleAccountsFromFees(accounts, excluded);
    }
 
    function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
        require(pair != uniswapV2Pair, "WaferyCake: The PancakeSwap pair cannot be removed from automatedMarketMakerPairs");
 
        _setAutomatedMarketMakerPair(pair, value);
    }
 
    function _setAutomatedMarketMakerPair(address pair, bool value) private onlyOwner {
        require(automatedMarketMakerPairs[pair] != value, "WaferyCake: Automated market maker pair is already set to that value");
        automatedMarketMakerPairs[pair] = value;
 
        if(value) {
            firstDividendTracker.excludeFromDividends(pair);
        }
 
        emit SetAutomatedMarketMakerPair(pair, value);
    }
 
    function updateGasForProcessing(uint256 newValue) external onlyOwner {
        require(newValue != gasForProcessing, "WaferyCake: Cannot update gasForProcessing to same value");
        gasForProcessing = newValue;
        emit GasForProcessingUpdated(newValue, gasForProcessing);
    }
 
    function updateMinimumBalanceForDividends(uint256 newMinimumBalance) external onlyOwner {
        firstDividendTracker.updateMinimumTokenBalanceForDividends(newMinimumBalance);
    }
 
    function updateClaimWait(uint256 claimWait) external onlyOwner {
        firstDividendTracker.updateClaimWait(claimWait);
    }
 
    function getFirstClaimWait() external view returns(uint256) {
        return firstDividendTracker.claimWait();
    }
 
    function getTotalFirstDividendsDistributed() external view returns (uint256) {
        return firstDividendTracker.totalDividendsDistributed();
    }
 
    function getIsExcludedFromFees(address account) public view returns(bool) {
        return isExcludedFromFees[account];
    }
 
    function withdrawableFirstDividendOf(address account) external view returns(uint256) {
    	return firstDividendTracker.withdrawableDividendOf(account);
  	}
 
  	function firstDividendTokenBalanceOf(address account) external view returns (uint256) {
		return firstDividendTracker.balanceOf(account);
	}
 
	function getAccountFirstDividendsInfo(address account)
        external view returns (
            address,
            int256,
            int256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256) {
        return firstDividendTracker.getAccount(account);
    }
 
    function getAccountFirstDividendsInfoAtIndex(uint256 index)
        external view returns (
            address,
            int256,
            int256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256) {
    	return firstDividendTracker.getAccountAtIndex(index);
    }
 
    function processDividendTracker(uint256 gas) external onlyOwner {
		(uint256 firstIterations, uint256 firstClaims, uint256 firstLastProcessedIndex) = firstDividendTracker.process(gas);
		emit ProcessedfirstDividendTracker(firstIterations, firstClaims, firstLastProcessedIndex, false, gas, tx.origin);
    }
 
    function claim() external {
		firstDividendTracker.processAccount(payable(msg.sender), false);
    }
    function getLastFirstDividendProcessedIndex() external view returns(uint256) {
    	return firstDividendTracker.getLastProcessedIndex();
    }
 
    function getNumberOfFirstDividendTokenHolders() external view returns(uint256) {
        return firstDividendTracker.getNumberOfTokenHolders();
    }
 
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(tradingIsEnabled || (isExcludedFromFees[from] || isExcludedFromFees[to]), "WaferyCake: Trading has not started yet");
 
        bool excludedAccount = isExcludedFromFees[from] || isExcludedFromFees[to];
 
        if(!automatedMarketMakerPairs[to] && tradingIsEnabled && !excludedAccount){
            require(balanceOf(to).add(amount) <= maxWalletBalance, 'Wallet balance is exceeding maxWalletBalance');
        }
 
        if (
            tradingIsEnabled &&
            automatedMarketMakerPairs[from] &&
            !excludedAccount
        ) {
            require(amount <= maxBuyTranscationAmount, "Transfer amount exceeds the maxTxAmount.");
 
        } else if (
        	tradingIsEnabled &&
            automatedMarketMakerPairs[to] &&
            !excludedAccount
        ) {
            require(amount <= maxSellTransactionAmount, "Sell transfer amount exceeds the maxSellTransactionAmount.");
        }
 
 
        uint256 contractTokenBalance = balanceOf(address(this));
        bool canSwap = contractTokenBalance >= swapTokensAtAmount;
 
        if (!swapping && canSwap && from != uniswapV2Pair) {
            swapping = true;
 
            if (marketingEnabled) {
                uint256 initialBalance = address(this).balance;
                uint256 swapTokens = contractTokenBalance.div(totalFees).mul(marketingFee);
                swapTokensForBNB(swapTokens);
                uint256 marketingPortion = address(this).balance.sub(initialBalance);
                transferToWallet(payable(marketingWallet), marketingPortion);
            }
 
            if(swapAndLiquifyEnabled) {
                uint256 liqTokens = contractTokenBalance.div(totalFees).mul(liquidityFee);
                swapAndLiquify(liqTokens);
            }
 
            if (firstDividendEnabled) {
                uint256 firstTokens = contractTokenBalance.div(totalFees).mul(firstDividendRewardsFee);
                swapAndSendFirstDividends(firstTokens);
            }
 
                swapping = false;
        }
 
        bool takeFee = tradingIsEnabled && !swapping && !excludedAccount;
 
        if(takeFee) {
        	uint256 fees = amount.div(100).mul(totalFees);
 
            // if sell, multiply by 1.2
            if(automatedMarketMakerPairs[to]) {
                fees = fees.div(100).mul(sellFeeIncreaseFactor);
            }
 
        	amount = amount.sub(fees);
 
            super._transfer(from, address(this), fees);
        }
 
        super._transfer(from, to, amount);
 
        try firstDividendTracker.setBalance(payable(from), balanceOf(from)) {} catch {}
        try firstDividendTracker.setBalance(payable(to), balanceOf(to)) {} catch {}
 
        if(!swapping) {
	    	uint256 gas = gasForProcessing;
 
	    	try firstDividendTracker.process(gas) returns (uint256 iterations, uint256 claims, uint256 lastProcessedIndex) {
	    		emit ProcessedfirstDividendTracker(iterations, claims, lastProcessedIndex, true, gas, tx.origin);
	    	}
	    	catch {
 
	    	}
        }
    }
 
 
    function swapAndLiquify(uint256 contractTokenBalance) private {
        // split the contract balance into halves
        uint256 half = contractTokenBalance.div(2);
        uint256 otherHalf = contractTokenBalance.sub(half);
 
        uint256 initialBalance = address(this).balance;
 
        swapTokensForBNB(half);
 
        uint256 newBalance = address(this).balance.sub(initialBalance);
 
        addLiquidity(otherHalf, newBalance);
 
        emit SwapAndLiquify(half, newBalance, otherHalf);
    }
 
    function addLiquidity(uint256 tokenAmount, uint256 bnbAmount) private {
 
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(uniswapV2Router), tokenAmount);
 
        // add the liquidity
        uniswapV2Router.addLiquidityETH{value: bnbAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            marketingWallet,
            block.timestamp
        );
    }
 
 
    function swapTokensForBNB(uint256 tokenAmount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
 
        _approve(address(this), address(uniswapV2Router), tokenAmount);
 
        // make the swap
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
 
    }
 
    function swapTokensForDividendToken(uint256 _tokenAmount, address _recipient, address _dividendAddress) private {
        address[] memory path = new address[](3);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        path[2] = _dividendAddress;
 
        _approve(address(this), address(uniswapV2Router), _tokenAmount);
 
        // make the swap
        uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
            _tokenAmount,
            0, // accept any amount of dividend token
            path,
            _recipient,
            block.timestamp
        );
    }
 
    function swapAndSendFirstDividends(uint256 tokens) private {
        swapTokensForDividendToken(tokens, address(this), firstDividendToken);
        uint256 firstDividends = IERC20(firstDividendToken).balanceOf(address(this));
        transferDividends(firstDividendToken, address(firstDividendTracker), firstDividendTracker, firstDividends);
    }
 
    function transferToWallet(address payable recipient, uint256 amount) private {
        recipient.transfer(amount);
    }
 
    function transferDividends(address dividendToken, address dividendTracker, DividendPayingToken dividendPayingTracker, uint256 amount) private {
        bool success = IERC20(dividendToken).transfer(dividendTracker, amount);
 
        if (success) {
            dividendPayingTracker.distributeDividends(amount);
            emit SendDividends(amount);
        }
    }
}
 
contract FIRSTDividendTracker is DividendPayingToken, Ownable {
    using SafeMath for uint256;
    using SafeMathInt for int256;
    using IterableMapping for IterableMapping.Map;
 
    IterableMapping.Map private tokenHoldersMap;
    uint256 public lastProcessedIndex;
 
    mapping (address => bool) public excludedFromDividends;
 
    mapping (address => uint256) public lastClaimTimes;
 
    uint256 public claimWait;
    uint256 public minimumTokenBalanceForDividends;
 
    event ExcludeFromDividends(address indexed account);
    event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);
 
    event Claim(address indexed account, uint256 amount, bool indexed automatic);
 
    constructor() DividendPayingToken("WaferyCake_Dividend_Tracker", "WaferyCake_Dividend_Tracker", 0x0E09FaBB73Bd3Ade0a17ECC321fD13a19e81cE82) {
    	claimWait = 3600;
        minimumTokenBalanceForDividends = 2000000 * (10**18); //must hold 2000000+ tokens
    }
 
    function _transfer(address, address, uint256) pure internal override {
        require(false, "WaferyCake_Dividend_Tracker: No transfers allowed");
    }
 
    function withdrawDividend() pure public override {
        require(false, "WaferyCake_Dividend_Tracker: withdrawDividend disabled. Use the 'claim' function on the main WaferyCake contract.");
    }
 
    function setDividendTokenAddress(address newToken) external override onlyOwner {
      dividendToken = newToken;
    }
 
    function updateMinimumTokenBalanceForDividends(uint256 _newMinimumBalance) external onlyOwner {
        require(_newMinimumBalance != minimumTokenBalanceForDividends, "New mimimum balance for dividend cannot be same as current minimum balance");
        minimumTokenBalanceForDividends = _newMinimumBalance * (10**18);
    }
 
    function excludeFromDividends(address account) external onlyOwner {
    	require(!excludedFromDividends[account]);
    	excludedFromDividends[account] = true;
 
    	_setBalance(account, 0);
    	tokenHoldersMap.remove(account);
 
    	emit ExcludeFromDividends(account);
    }
 
    function updateClaimWait(uint256 newClaimWait) external onlyOwner {
        require(newClaimWait >= 3600 && newClaimWait <= 86400, "WaferyCake_Dividend_Tracker: claimWait must be updated to between 1 and 24 hours");
        require(newClaimWait != claimWait, "WaferyCake_Dividend_Tracker: Cannot update claimWait to same value");
        emit ClaimWaitUpdated(newClaimWait, claimWait);
        claimWait = newClaimWait;
    }
 
    function getLastProcessedIndex() external view returns(uint256) {
    	return lastProcessedIndex;
    }
 
    function getNumberOfTokenHolders() external view returns(uint256) {
        return tokenHoldersMap.keys.length;
    }
 
 
    function getAccount(address _account)
        public view returns (
            address account,
            int256 index,
            int256 iterationsUntilProcessed,
            uint256 withdrawableDividends,
            uint256 totalDividends,
            uint256 lastClaimTime,
            uint256 nextClaimTime,
            uint256 secondsUntilAutoClaimAvailable) {
        account = _account;
 
        index = tokenHoldersMap.getIndexOfKey(account);
 
        iterationsUntilProcessed = -1;
 
        if(index >= 0) {
            if(uint256(index) > lastProcessedIndex) {
                iterationsUntilProcessed = index.sub(int256(lastProcessedIndex));
            }
            else {
                uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length > lastProcessedIndex ?
                                                        tokenHoldersMap.keys.length.sub(lastProcessedIndex) :
                                                        0;
 
 
                iterationsUntilProcessed = index.add(int256(processesUntilEndOfArray));
            }
        }
 
 
        withdrawableDividends = withdrawableDividendOf(account);
        totalDividends = accumulativeDividendOf(account);
 
        lastClaimTime = lastClaimTimes[account];
 
        nextClaimTime = lastClaimTime > 0 ?
                                    lastClaimTime.add(claimWait) :
                                    0;
 
        secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp ?
                                                    nextClaimTime.sub(block.timestamp) :
                                                    0;
    }
 
    function getAccountAtIndex(uint256 index)
        public view returns (
            address,
            int256,
            int256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256) {
    	if(index >= tokenHoldersMap.size()) {
            return (0x0000000000000000000000000000000000000000, -1, -1, 0, 0, 0, 0, 0);
        }
 
        address account = tokenHoldersMap.getKeyAtIndex(index);
 
        return getAccount(account);
    }
 
    function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
    	if(lastClaimTime > block.timestamp)  {
    		return false;
    	}
 
    	return block.timestamp.sub(lastClaimTime) >= claimWait;
    }
 
    function setBalance(address payable account, uint256 newBalance) external onlyOwner {
    	if(excludedFromDividends[account]) {
    		return;
    	}
 
    	if(newBalance >= minimumTokenBalanceForDividends) {
            _setBalance(account, newBalance);
    		tokenHoldersMap.set(account, newBalance);
    	}
    	else {
            _setBalance(account, 0);
    		tokenHoldersMap.remove(account);
    	}
 
    	processAccount(account, true);
    }
 
    function process(uint256 gas) public returns (uint256, uint256, uint256) {
    	uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;
 
    	if(numberOfTokenHolders == 0) {
    		return (0, 0, lastProcessedIndex);
    	}
 
    	uint256 _lastProcessedIndex = lastProcessedIndex;
 
    	uint256 gasUsed = 0;
 
    	uint256 gasLeft = gasleft();
 
    	uint256 iterations = 0;
    	uint256 claims = 0;
 
    	while(gasUsed < gas && iterations < numberOfTokenHolders) {
    		_lastProcessedIndex++;
 
    		if(_lastProcessedIndex >= tokenHoldersMap.keys.length) {
    			_lastProcessedIndex = 0;
    		}
 
    		address account = tokenHoldersMap.keys[_lastProcessedIndex];
 
    		if(canAutoClaim(lastClaimTimes[account])) {
    			if(processAccount(payable(account), true)) {
    				claims++;
    			}
    		}
 
    		iterations++;
 
    		uint256 newGasLeft = gasleft();
 
    		if(gasLeft > newGasLeft) {
    			gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
    		}
 
    		gasLeft = newGasLeft;
    	}
 
    	lastProcessedIndex = _lastProcessedIndex;
 
    	return (iterations, claims, lastProcessedIndex);
    }
 
    function processAccount(address payable account, bool automatic) public onlyOwner returns (bool) {
        uint256 amount = _withdrawDividendOfUser(account);
 
    	if(amount > 0) {
    		lastClaimTimes[account] = block.timestamp;
            emit Claim(account, amount, automatic);
    		return true;
    	}
 
    	return false;
    }
}

Contract Address
0xcb89c61c18fca3c72a187ef750e36b6185b6502c

hello im new to any sort of coding i have been reading forums for days trying to figure out how to verify my contract
this is what i got
contract address is 0x9f0e4a9cbc0e2c0909c086cb8b2a24eb825eab2e

compile is 0.8.4 i think

pragma solidity ^0.8.0;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol";

contract greenbacks is ERC20 {
     constructor(uint256 initialSupply) public ERC20 ("greenbacks", "GBC"){
        _mint(msg.sender,initialSupply);
    }
}

i have tried everything can someone help please and ill send them some crypto

Hi, welcome! :wave:

It seems like you deployed your contract 104 days ago, it is a little hard to find the right source code, so how did you deploy your contract? By truffle or hardhat, I really suggest use one of these tools to deploy your contract, and they also have a tool to verify contract, it is convenient to verify contract by the plugin.

And maybe you can have a look at this tutorial:

i used remix, bscscan told me to flatten the code im not sure what that means. ya i have been working on getting this done for over 100 days
I fallowed a youtube video to make the token put money down on token and now i cant verify it to save my life

I think you can verify contracts via a single file or some multi-files, it is up to you.
If you deploy your contracts with remix, maybe you can have a look at this tutorial:

@Skyge can you verify my contract address 0x9320261b09780a0C9ffD6b78dbF7A28309fA6417

i tried flatting the file but i still show the error that it cant generate ByteCode and Abi

Have you followed the tutorial I shared above? What was the error did you get?

@Skyge man I have been trying to verify my contract for 24 hours and literally can not figure this out I have the same problem as these guys but on ether blockchain I'll pay you to help me

@Skyge
contract number is : 0x7d17f254ef144b640608cbfa938475bda4619eef

compile is 0.8.5

Hi, welcome! :wave:

Please share the source code, do not use a screenshot.

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