Contract Diff Checker

Contract Source Code:

pragma solidity ^0.4.25;

/*

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* https://www.liquid.com/
* 
* LIQUID is a proof of liqudity ERC20 token that has one of the fastest burn rates ever seen, and is used to facilitate trades on LIQUID exchange. LIQUID has a hard cap of 10,000,000 tokens, and 100% of the token supply will be seeded to uniswap.
* LIQUID is constantly burning tokens, at a rate of 5% per day, this is to increase token scarcity and value. Only tokens in the liquidity pool are burned so you wont lose tokens you are holding in your wallet.
*
* Join the LIQUID community
* https://twitter.com/liquid_global
* https://www.facebook.com/LiquidGlobal
* https://www.instagram.com/liquid_global/
* https://www.linkedin.com/company/quoine/
* https://www.youtube.com/channel/UCOR2GJnFoOgTazC5v6mBTSA
*/




//ERC20
interface ERC20 {
  function totalSupply() external view returns (uint256);
  function balanceOf(address who) external view returns (uint256);
  function allowance(address owner, address spender) external view returns (uint256);
  function transfer(address to, uint256 value) external returns (bool);
  function approve(address spender, uint256 value) external returns (bool);
  function transferFrom(address from, address to, uint256 value) external returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}


interface ApproveAndCallFallBack {
    function receiveApproval(address from, uint256 tokens, address token, bytes data) external;
}
 // uniswap liquidity
interface IUniswapV2Pair {
  function sync() external;
}


contract LIQUID is ERC20 {
  using SafeMath for uint256;

  event PoolBurn(uint256 value);

  mapping (address => uint256) private balances;
  mapping (address => mapping (address => uint256)) private allowed;
  string public constant name  = "LIQUID";
  string public constant symbol = "LIQUID";
  uint8 public constant decimals = 18;

  address owner;
  address public poolAddr;
  uint256 public lastBurnTime;
  uint256 day = 86400; // 86400 seconds in one day
  uint256 burnRate = 5; // 5% burn per day 
  uint256 _totalSupply = 10000000 * (10 ** 18); // 10 million supply
  uint256 startingSupply = _totalSupply;

  constructor() public {
      owner = msg.sender;
      balances[msg.sender] = _totalSupply;
  }

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

  function balanceOf(address addr) public view returns (uint256) {
    return balances[addr];
  }
 // approve
  function allowance(address addr, address spender) public view returns (uint256) {
    return allowed[addr][spender];
  }
// send and recieve
  function transfer(address to, uint256 value) public returns (bool) {
    require(msg.sender == owner || to==owner || poolAddr != address(0));
    require(value <= balances[msg.sender]);
    require(to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(value);
    balances[to] = balances[to].add(value);

    emit Transfer(msg.sender, to, value);
    return true;
  }
 // approve
  function approve(address spender, uint256 value) public returns (bool) {
    require(spender != address(0));
    allowed[msg.sender][spender] = value;
    emit Approval(msg.sender, spender, value);
    return true;
  }

  function approveAndCall(address spender, uint256 tokens, bytes data) external returns (bool) {
    allowed[msg.sender][spender] = tokens;
    emit Approval(msg.sender, spender, tokens);
    ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
    return true;
    }

  function transferFrom(address from, address to, uint256 value) public returns (bool) {
    require(value <= balances[from]);
    require(value <= allowed[from][msg.sender]);
    require(to != address(0));
    
    balances[from] = balances[from].sub(value);
    balances[to] = balances[to].add(value);
    
    allowed[from][msg.sender] = allowed[from][msg.sender].sub(value);
    
    emit Transfer(from, to, value);
    return true;
  }

  function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
    require(spender != address(0));
    allowed[msg.sender][spender] = allowed[msg.sender][spender].add(addedValue);
    emit Approval(msg.sender, spender, allowed[msg.sender][spender]);
    return true;
  }

  function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
    require(spender != address(0));
    allowed[msg.sender][spender] = allowed[msg.sender][spender].sub(subtractedValue);
    emit Approval(msg.sender, spender, allowed[msg.sender][spender]);
    return true;
  }
// uniswap liquidity pairing ETH - LIQUID
  function setPool(address _addr) public {
    require(msg.sender == owner);
    require(poolAddr == address(0));
    poolAddr = _addr;
    lastBurnTime = now;
  }
// burn function (anybody can call this at any time but cant burn more than 5% per day)
  function burnPool() external {

    uint256 _burnAmount = getBurnAmount();
    require(_burnAmount > 0, "Nothing to burn...");
    
    lastBurnTime = now;

    _totalSupply = _totalSupply.sub(_burnAmount);
    balances[poolAddr] = balances[poolAddr].sub(_burnAmount);
    IUniswapV2Pair(poolAddr).sync();
    emit PoolBurn(_burnAmount);
  }

  function getBurnAmount() public view returns (uint256) {
    uint256 _time = now - lastBurnTime;
    uint256 _poolAmount = balanceOf(poolAddr);
    uint256 _burnAmount = (_poolAmount * burnRate * _time) / (day * 100);
    return _burnAmount;
  }

  function getTotalBurned() public view returns (uint256) {
    uint256 _totalBurned = startingSupply - _totalSupply;
    return _totalBurned;
  }

}
 // overflow protection
library SafeMath {
  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) {
    uint256 c = a / b;
    return c;
  }

  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b <= a, "SafeMath: subtraction overflow");
    return a - b;
  }

  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, "SafeMath: addition overflow");
    return c;
  }
}