Address Contract Partially Verified
Address
0x3F142e7789ea95a2580e9Da8f634a3A4ce479a3d
Balance
0 ETH
Nonce
1
Code Size
12098 bytes
Creator
0x4e254551...DBFA at tx 0x78b1a57a...387c7a
Indexed Transactions
0
Contract Bytecode
12098 bytes
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Verified Source Code Partial Match
Compiler: v0.8.23+commit.f704f362
EVM: shanghai
Optimization: No
Nyra.sol 376 lines
// SPDX-License-Identifier: MIT
/**
https://nyra.finance
https://x.com/NyraFinance
https://t.me/NyraFinance
*
*/
pragma solidity 0.8.23;
/* -------------------------------------------------------------------------- */
/* AUXILIARY LAYERS */
/* -------------------------------------------------------------------------- */
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;
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 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(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
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);
}
/* -------------------------------------------------------------------------- */
/* CORE CONTRACT */
/* -------------------------------------------------------------------------- */
contract Nyra is Context, IERC20, Ownable {
using SafeMath for uint256;
/* ---------------------------------------------------------------------- */
/* VARIABLES */
/* ---------------------------------------------------------------------- */
// ERC‑20 mappings
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
// Fee exclusions
mapping (address => bool) private _isExcludedFromFee;
// Fee wallets
address payable private _taxWallet; // deployer / marketing
address payable private _ecosystemWallet; // secondary recipient
// Tax schedule (identical except final rates = 4 %)
uint256 private _initialBuyTax = 15;
uint256 private _initialSellTax = 20;
uint256 private _finalBuyTax = 4; // changed
uint256 private _finalSellTax = 4; // changed
uint256 private _reduceBuyTaxAt = 55;
uint256 private _reduceSellTaxAt = 25;
uint256 private _preventSwapBefore = 25;
uint256 private _buyCount = 0;
// Token details
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 1_000_000_000 * 10**_decimals; // changed
string private constant _name = "Nyra AI"; // changed
string private constant _symbol = "NYRA"; // changed
// Transaction / wallet limits (kept proportional at 1 % of supply)
uint256 public _maxTxAmount = 10_000_000 * 10**_decimals; // 1 %
uint256 public _maxWalletSize = 10_000_000 * 10**_decimals; // 1 %
uint256 public _taxSwapThreshold= 10_000_000 * 10**_decimals; // 1 %
uint256 public _maxTaxSwap = 8_000_000 * 10**_decimals; // 0.8 %
// Uniswap plumbing
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
// Anti‑MEV / per‑block sell tracking
uint256 private sellCount = 0;
uint256 private lastSellBlock = 0;
// Events
event MaxTxAmountUpdated(uint256 _maxTxAmount);
/* ---------------------------------------------------------------------- */
/* MODIFIERS */
/* ---------------------------------------------------------------------- */
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
/* ---------------------------------------------------------------------- */
/* CONSTRUCTOR */
/* ---------------------------------------------------------------------- */
constructor () {
_taxWallet = payable(_msgSender());
_ecosystemWallet = payable(0x7e125df5B1778ABD17ABfcfE3D1e242B4842B48F);
_balances[_msgSender()] = _tTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_taxWallet] = true;
_isExcludedFromFee[_ecosystemWallet] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
/* ---------------------------------------------------------------------- */
/* ERC‑20 STANDARD OPS */
/* ---------------------------------------------------------------------- */
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 pure override returns (uint256) { return _tTotal; }
function balanceOf(address account) public view override returns (uint256) { return _balances[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, "ERC20: transfer amount exceeds allowance"));
return true;
}
/* ---------------------------------------------------------------------- */
/* INTERNAL HELPER FUNCS */
/* ---------------------------------------------------------------------- */
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");
uint256 taxAmount = 0;
// Apply tax only on buys or sells (i.e., involving the LP pair)
if (from == uniswapV2Pair || to == uniswapV2Pair) {
// BUY logic
if (from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) {
taxAmount = amount.mul((_buyCount > _reduceBuyTaxAt) ? _finalBuyTax : _initialBuyTax).div(100);
require(amount <= _maxTxAmount, "Exceeds _maxTxAmount");
require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds _maxWalletSize");
_buyCount++;
}
// SELL logic
else if (to == uniswapV2Pair && from != address(this)) {
taxAmount = amount.mul((_buyCount > _reduceSellTaxAt) ? _finalSellTax : _initialSellTax).div(100);
}
// Swap‑and‑liquify path
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && to == uniswapV2Pair && swapEnabled && contractTokenBalance > _taxSwapThreshold && _buyCount > _preventSwapBefore) {
if (block.number > lastSellBlock) {
sellCount = 0;
}
require(sellCount < 7, "Only 7 sells per block!");
swapTokensForEth(min(amount, min(contractTokenBalance, _maxTaxSwap)));
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(contractETHBalance);
}
sellCount++;
lastSellBlock = block.number;
}
}
if (taxAmount > 0) {
_balances[address(this)] = _balances[address(this)].add(taxAmount);
emit Transfer(from, address(this), taxAmount);
}
_balances[from] = _balances[from].sub(amount);
_balances[to] = _balances[to].add(amount.sub(taxAmount));
emit Transfer(from, to, amount.sub(taxAmount));
}
/* ---------------------------------------------------------------------- */
/* INTERNAL DEX HELPERS */
/* ---------------------------------------------------------------------- */
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
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 sendETHToFee(uint256 amount) private {
uint256 half = amount.div(2);
_taxWallet.transfer(half);
_ecosystemWallet.transfer(amount.sub(half));
}
/* ---------------------------------------------------------------------- */
/* OWNER‑ONLY UTILS */
/* ---------------------------------------------------------------------- */
function removeNyraLimits() external onlyOwner {
_maxTxAmount = _tTotal;
_maxWalletSize = _tTotal;
emit MaxTxAmountUpdated(_tTotal);
}
function openTrading() external onlyOwner {
require(!tradingOpen, "trading is already open");
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
swapEnabled = true;
tradingOpen = true;
}
function reduceFee(uint256 _newFee) external {
require(_msgSender() == _taxWallet);
require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);
_finalBuyTax = _newFee;
_finalSellTax = _newFee;
}
function manualSwap() external {
require(_msgSender() == _taxWallet);
uint256 tokenBalance = balanceOf(address(this));
if (tokenBalance > 0) {
swapTokensForEth(tokenBalance);
}
uint256 ethBalance = address(this).balance;
if (ethBalance > 0) {
sendETHToFee(ethBalance);
}
}
/* ---------------------------------------------------------------------- */
/* FALLBACKS */
/* ---------------------------------------------------------------------- */
receive() external payable {}
}
Read Contract
_maxTaxSwap 0x0faee56f → uint256
_maxTxAmount 0x7d1db4a5 → uint256
_maxWalletSize 0x8f9a55c0 → uint256
_taxSwapThreshold 0xbf474bed → uint256
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
name 0x06fdde03 → string
owner 0x8da5cb5b → address
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256
Write Contract 8 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address spender
uint256 amount
returns: bool
manualSwap 0x51bc3c85
No parameters
openTrading 0xc9567bf9
No parameters
reduceFee 0xec1f3f63
uint256 _newFee
removeNyraLimits 0xf2af3a9c
No parameters
renounceOwnership 0x715018a6
No parameters
transfer 0xa9059cbb
address recipient
uint256 amount
returns: bool
transferFrom 0x23b872dd
address sender
address recipient
uint256 amount
returns: bool
Recent Transactions
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