🟩How To Build on SOMA

Build your smart contract now

You now can create smart contracts on the SOMA NETWORK testnet, using standard contracts (ERC20).

Here is how to build a smart contract on the SOMA TESTNET network

  1. Connect your wallet with SOMA TESTNET NETWORK

  2. Create new file with format .sol

  3. Paste your Smart contract on page

  4. Click Solidity compiler

  5. go to page Deploy

  6. Go to page "ENVIRONMENT" and select Inject Metamask

  7. Make sure your " ACCOUNT " already connect with SOMA TESTNET NETWORK

  8. and you can deploy

When everything is deployed you can check your metamask history, click on the "View on blockexplorer" section and you can see your txhash building in Somascan.io.

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.7;

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);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        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() {
        _setOwner(_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 {
        _setOwner(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

interface IFactory{
        function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IRouter {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline) external;
}

library Address{
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
}


contract [name contract] is IERC20, Context, Ownable {
    using Address for address payable;
    
    mapping (address => uint256) private _rOwned;
    mapping (address => uint256) private _tOwned;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    mapping (address => bool) private _isExcluded;
    mapping (address => bool) public allowedTransfer;
    mapping (address => bool) private _isBlacklisted;

    address[] private _excluded;

    bool public tradingEnabled;
    bool public swapEnabled;
    bool private swapping;
    
    mapping(address => uint256) private _lastSell;
    
    uint256 public coolDownTime = 0 seconds;
    bool public coolDownEnabled = false;
    
    modifier antiBot(address account){
        require(tradingEnabled || allowedTransfer[account], "Trading not enabled yet");
        _;
    }

    IRouter public router;
    address public pair;

    uint8 private constant _decimals = 9;
    uint256 private constant MAX = ~uint256(0);

    uint256 private _tTotal = 100000000 * 10 **_decimals;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    
    uint256 public genesis_block;
    
    string private constant _symbol = "[name symbols]";
    string private constant _name = "[name coin]";

    uint256 public Coin_max_BuyLimit = 1000000 * 10**9;
    uint256 public Coin_max_SellLimit = 1000000 * 10**9;

    address private Coin_Only_Wallet = [wallet Dev];
    address private Coin_Team_Wallet = [wallet Dev];

    uint256 public Coin_max_WalletLimit = 1000000 * 10**9;
    uint256 public swapTokensAtAmount = 500000 * 10**9;
    

    struct Taxes {
        uint256 rfi;
        uint256 marketing;
        uint256 liquidity; 
        uint256 team;
    }

    Taxes public sellTaxes = Taxes(0, 10, 0, 0);
    Taxes public taxes = Taxes(0, 10, 0, 0);
    

    struct TotFeesPaidStruct{
        uint256 rfi;
        uint256 marketing;
        uint256 liquidity; 
        uint256 team;
    }
    
    TotFeesPaidStruct public totFeesPaid;

    struct valuesFromGetValues{
      uint256 rAmount;
      uint256 rTransferAmount;
      uint256 rRfi;
      uint256 rMarketing;
      uint256 rLiquidity;
      uint256 rTeam;
      uint256 tTransferAmount;
      uint256 tRfi;
      uint256 tMarketing;
      uint256 tLiquidity;
      uint256 tTeam;
    }

    event FeesChanged();
    event UpdatedRouter(address oldRouter, address newRouter);

    modifier lockTheSwap {
        swapping = true;
        _;
        swapping = false;
    }

    constructor (address routerAddress) {
        IRouter _router = IRouter(routerAddress);
        address _pair = IFactory(_router.factory())
            .createPair(address(this), _router.WETH());

        router = _router;
        pair = _pair;
        
        excludeFromReward(pair);

        _rOwned[owner()] = _rTotal;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[Coin_Only_Wallet] = true;
        _isExcludedFromFee[Coin_Team_Wallet] = true;
        
        allowedTransfer[address(this)] = true;
        allowedTransfer[owner()] = true;
        allowedTransfer[pair] = true;
        allowedTransfer[Coin_Only_Wallet] = true;
        allowedTransfer[Coin_Team_Wallet] = true;

        emit Transfer(address(0), owner(), _tTotal);
    }

    //std ERC20:
    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;
    }

    //override ERC20:
    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (_isExcluded[account]) return _tOwned[account];
        return tokenFromReflection(_rOwned[account]);
    }
    
    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public  override antiBot(msg.sender) returns(bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override antiBot(sender) returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        _approve(sender, _msgSender(), currentAllowance - amount);

        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public  antiBot(msg.sender) returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public  antiBot(msg.sender) returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);

        return true;
    }
    
    function transfer(address recipient, uint256 amount) public override antiBot(msg.sender) returns (bool)
    { 
      _transfer(msg.sender, recipient, amount);
      return true;
    }

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferRfi) public view returns(uint256) {
        require(tAmount <= _tTotal, "Amount must be less than supply");
        if (!deductTransferRfi) {
            valuesFromGetValues memory s = _getValues(tAmount, true, false);
            return s.rAmount;
        } else {
            valuesFromGetValues memory s = _getValues(tAmount, true, false);
            return s.rTransferAmount;
        }
    }

    function setTradingStatus(bool state) external onlyOwner{
        tradingEnabled = state;
        swapEnabled = state;
        if(state == true && genesis_block == 0) genesis_block = block.number;
    }

    function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
        require(rAmount <= _rTotal, "Amount must be less than total reflections");
        uint256 currentRate =  _getRate();
        return rAmount/currentRate;
    }

    function excludeFromReward(address account) public onlyOwner() {
        require(!_isExcluded[account], "Account is already excluded");
        if(_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) external onlyOwner() {
        require(_isExcluded[account], "Account is not excluded");
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tOwned[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

    function excludeFromFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = true;
    }

    function includeInFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = false;
    }

    function isExcludedFromFee(address account) public view returns(bool) {
        return _isExcludedFromFee[account];
    }

    function setTaxes(uint256 _rfi, uint256 _marketing, uint256 _liquidity, uint256 _team) public onlyOwner {
       taxes = Taxes(_rfi,_marketing,_liquidity,_team);
        emit FeesChanged();
    }
    
    function setSellTaxes(uint256 _rfi, uint256 _marketing, uint256 _liquidity, uint256 _team) public onlyOwner {
       sellTaxes = Taxes(_rfi,_marketing,_liquidity,_team);
        emit FeesChanged();
    }

    function _reflectRfi(uint256 rRfi, uint256 tRfi) private {
        _rTotal -=rRfi;
        totFeesPaid.rfi +=tRfi;
    }

    function _takeLiquidity(uint256 rLiquidity, uint256 tLiquidity) private {
        totFeesPaid.liquidity +=tLiquidity;

        if(_isExcluded[address(this)])
        {
            _tOwned[address(this)]+=tLiquidity;
        }
        _rOwned[address(this)] +=rLiquidity;
    }

    function _takeMarketing(uint256 rMarketing, uint256 tMarketing) private {
        totFeesPaid.marketing +=tMarketing;

        if(_isExcluded[address(this)])
        {
            _tOwned[address(this)]+=tMarketing;
        }
        _rOwned[address(this)] +=rMarketing;
    }
    
    function _takeTeam(uint256 rTeam, uint256 tTeam) private {
        totFeesPaid.team +=tTeam;

        if(_isExcluded[address(this)])
        {
            _tOwned[address(this)]+=tTeam;
        }
        _rOwned[address(this)] +=rTeam;
    }


    
    function _getValues(uint256 tAmount, bool takeFee, bool isSell) private view returns (valuesFromGetValues memory to_return) {
        to_return = _getTValues(tAmount, takeFee, isSell);
        (to_return.rAmount, to_return.rTransferAmount, to_return.rRfi, to_return.rMarketing, to_return.rLiquidity) = _getRValues1(to_return, tAmount, takeFee, _getRate());
        (to_return.rTeam) = _getRValues2(to_return, takeFee, _getRate());
        return to_return;
    }

    function _getTValues(uint256 tAmount, bool takeFee, bool isSell) private view returns (valuesFromGetValues memory s) {

        if(!takeFee) {
          s.tTransferAmount = tAmount;
          return s;
        }
        Taxes memory temp;
        if(isSell) temp = sellTaxes;
        else temp = taxes;
        
        s.tRfi = tAmount*temp.rfi/100;
        s.tMarketing = tAmount*temp.marketing/100;
        s.tLiquidity = tAmount*temp.liquidity/100;
        s.tTeam = tAmount*temp.team/100;
        s.tTransferAmount = tAmount-s.tRfi-s.tMarketing-s.tLiquidity-s.tTeam;
        return s;
    }

    function _getRValues1(valuesFromGetValues memory s, uint256 tAmount, bool takeFee, uint256 currentRate) private pure returns (uint256 rAmount, uint256 rTransferAmount, uint256 rRfi,uint256 rMarketing, uint256 rLiquidity){
        rAmount = tAmount*currentRate;

        if(!takeFee) {
          return(rAmount, rAmount, 0,0,0);
        }

        rRfi = s.tRfi*currentRate;
        rMarketing = s.tMarketing*currentRate;
        rLiquidity = s.tLiquidity*currentRate;
        uint256 rTeam = s.tTeam*currentRate;
        rTransferAmount =  rAmount-rRfi-rMarketing-rLiquidity-rTeam;
        return (rAmount, rTransferAmount, rRfi,rMarketing,rLiquidity);
    }
    
    function _getRValues2(valuesFromGetValues memory s, bool takeFee, uint256 currentRate) private pure returns (uint256 rTeam) {

        if(!takeFee) {
          return(0);
        }

        rTeam = s.tTeam*currentRate;
        return (rTeam);
    }

    function _getRate() private view returns(uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply/tSupply;
    }

    function _getCurrentSupply() private view returns(uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
            rSupply = rSupply-_rOwned[_excluded[i]];
            tSupply = tSupply-_tOwned[_excluded[i]];
        }
        if (rSupply < _rTotal/_tTotal) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function _approve(address owner, address spender, uint256 amount) private {
        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 _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require(amount <= balanceOf(from),"You are trying to transfer more than your balance");
        require(!_isBlacklisted[from] && !_isBlacklisted[to], "You are a bot");
        
        if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to]){
            require(tradingEnabled, "Trading not active");
        }
        
        if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to] && block.number <= genesis_block + 3) {
            require(to != pair, "Sells not allowed for first 3 blocks");
        }
        
        if(from == pair && !_isExcludedFromFee[to] && !swapping){
            require(amount <= Coin_max_BuyLimit, "You are exceeding Coin_max_BuyLimit");
            require(balanceOf(to) + amount <= Coin_max_WalletLimit, "You are exceeding Coin_max_WalletLimit");
        }
        
        if(from != pair && !_isExcludedFromFee[to] && !_isExcludedFromFee[from] && !swapping){
            require(amount <= Coin_max_SellLimit, "You are exceeding Coin_max_SellLimit");
            if(to != pair){
                require(balanceOf(to) + amount <= Coin_max_WalletLimit, "You are exceeding Coin_max_WalletLimit");
            }
            if(coolDownEnabled){
                uint256 timePassed = block.timestamp - _lastSell[from];
                require(timePassed >= coolDownTime, "Cooldown enabled");
                _lastSell[from] = block.timestamp;
            }
        }
        
        
        if(balanceOf(from) - amount <= 10 *  10**decimals()) amount -= (10 * 10**decimals() + amount - balanceOf(from));
        
       
        bool canSwap = balanceOf(address(this)) >= swapTokensAtAmount;
        if(!swapping && swapEnabled && canSwap && from != pair && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]){
            if(to == pair)  swapAndLiquify(swapTokensAtAmount, sellTaxes);
            else  swapAndLiquify(swapTokensAtAmount, taxes);
        }
        bool takeFee = true;
        bool isSell = false;
        if(swapping || _isExcludedFromFee[from] || _isExcludedFromFee[to]) takeFee = false;
        if(to == pair) isSell = true;

        _tokenTransfer(from, to, amount, takeFee, isSell);
    }


    //this method is responsible for taking all fee, if takeFee is true
    function _tokenTransfer(address sender, address recipient, uint256 tAmount, bool takeFee, bool isSell) private {

        valuesFromGetValues memory s = _getValues(tAmount, takeFee, isSell);

        if (_isExcluded[sender] ) {  //from excluded
                _tOwned[sender] = _tOwned[sender]-tAmount;
        }
        if (_isExcluded[recipient]) { //to excluded
                _tOwned[recipient] = _tOwned[recipient]+s.tTransferAmount;
        }

        _rOwned[sender] = _rOwned[sender]-s.rAmount;
        _rOwned[recipient] = _rOwned[recipient]+s.rTransferAmount;
        
        if(s.rRfi > 0 || s.tRfi > 0) _reflectRfi(s.rRfi, s.tRfi);
        if(s.rLiquidity > 0 || s.tLiquidity > 0) {
            _takeLiquidity(s.rLiquidity,s.tLiquidity);
            emit Transfer(sender, address(this), s.tLiquidity + s.tMarketing + s.tTeam);
        }
        if(s.rMarketing > 0 || s.tMarketing > 0) _takeMarketing(s.rMarketing, s.tMarketing);
        if(s.rTeam > 0 || s.tTeam > 0) _takeTeam(s.rTeam, s.tTeam);
        emit Transfer(sender, recipient, s.tTransferAmount);
        
    }

    function swapAndLiquify(uint256 contractBalance, Taxes memory temp) private lockTheSwap{
        uint256 denominator = (temp.liquidity + temp.marketing + temp.team) * 2;
        uint256 tokensToAddLiquidityWith = contractBalance * temp.liquidity / denominator;
        uint256 toSwap = contractBalance - tokensToAddLiquidityWith;

        uint256 initialBalance = address(this).balance;

        swapTokensForBNB(toSwap);

        uint256 deltaBalance = address(this).balance - initialBalance;
        uint256 unitBalance= deltaBalance / (denominator - temp.liquidity);
        uint256 bnbToAddLiquidityWith = unitBalance * temp.liquidity;

        if(bnbToAddLiquidityWith > 0){
            // Add liquidity to pancake
            addLiquidity(tokensToAddLiquidityWith, bnbToAddLiquidityWith);
        }

        uint256 marketingAmt = unitBalance * 2 * temp.marketing;
        if(marketingAmt > 0){
            payable(Coin_Only_Wallet).sendValue(marketingAmt);
        }
        uint256 teamAmt = unitBalance * 2 * temp.team;
        if(teamAmt > 0){
            payable(Coin_Team_Wallet).sendValue(teamAmt);
        }
    }

    function addLiquidity(uint256 tokenAmount, uint256 bnbAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(router), tokenAmount);

        // add the liquidity
        router.addLiquidityETH{value: bnbAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            owner(),
            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] = router.WETH();

        _approve(address(this), address(router), tokenAmount);

        // make the swap
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }
    
    function airdropTokens(address[] memory accounts, uint256[] memory amounts) external onlyOwner{
        require(accounts.length == amounts.length, "Arrays must have same size");
        for(uint256 i = 0; i < accounts.length; i++){
            _tokenTransfer(msg.sender, accounts[i], amounts[i], false, false);
        }
    }
    
    function bulkExcludeFee(address[] memory accounts, bool state) external onlyOwner{
        for(uint256 i = 0; i < accounts.length; i++){
            _isExcludedFromFee[accounts[i]] = state;
        }
    }

    function Coin_Update_MarketingWallet(address newWallet) external onlyOwner{
        Coin_Only_Wallet = newWallet;
    }
    
    function Coin_Update_TeamWallet(address newWallet) external onlyOwner{
        Coin_Team_Wallet = newWallet;
    }

    
    function updateCooldown(bool state, uint256 time) external onlyOwner{
        coolDownTime = time * 1 seconds;
        coolDownEnabled = state;
    }

    function updateSwapTokensAtAmount(uint256 amount) external onlyOwner{
        swapTokensAtAmount = amount * 10**_decimals;
    }

    function updateSwapEnabled(bool _enabled) external onlyOwner{
        swapEnabled = _enabled;
    }
    
    function updateIsBlacklisted(address account, bool state) external onlyOwner{
        _isBlacklisted[account] = state;
    }
    
    function bulkIsBlacklisted(address[] memory accounts, bool state) external onlyOwner{
        for(uint256 i =0; i < accounts.length; i++){
            _isBlacklisted[accounts[i]] = state;

        }
    }
    
    function updateAllowedTransfer(address account, bool state) external onlyOwner{
        allowedTransfer[account] = state;
    }
    
    function updateMaxTxLimit(uint256 maxBuy, uint256 maxSell) external onlyOwner{
        Coin_max_BuyLimit = maxBuy * 10**decimals();
        Coin_max_SellLimit = maxSell * 10**decimals();
    }
    
    function Coin_Max_Walletlimit(uint256 amount) external onlyOwner{
        Coin_max_WalletLimit = amount * 10**decimals();
    }

    function updateRouterAndPair(address newRouter, address newPair) external onlyOwner{
        router = IRouter(newRouter);
        pair = newPair;
    }
    
    //Use this in case BNB are sent to the contract by mistake
    function reBNB(uint256 weiAmount) external onlyOwner{
        require(address(this).balance >= weiAmount, "insufficient BNB balance");
        payable(msg.sender).transfer(weiAmount);
    }
    

    function reAnyBEP20Tokens(address _tokenAddr, address _to, uint _amount) public onlyOwner {
        IERC20(_tokenAddr).transfer(_to, _amount);
    }

    receive() external payable{
    }
}

Description: - [Name Contract] >> remove symbol [ ] and writte you name contract - [Name token] >> remove symbol [ ] and writte your name token - [Name symbols] >> remove symbol [ ] and writte your symbols -[ Wallet Dev] >> remove symbols [ ] and writte your wallet - _tTotal >> Coin supply - _decimals >> Decimals Coin

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