CarbonPepeX

{{
  "language": "Solidity",
  "sources": {
    "CarbonPepeX_Token.sol": {
      "content": "// SPDX-License-Identifier: MIT\r
pragma solidity ^0.8.24;\r
\r
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";\r
import "@openzeppelin/contracts/access/Ownable.sol";\r
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";\r
\r
/**\r
 * @title Carbon Pepe X Token (CPX)\r
 * @dev ERC20 token with distribution and vesting functionality\r
 */\r
contract CarbonPepeX is ERC20, Ownable, ReentrancyGuard {\r
    \r
    // Token constants\r
    uint256 public constant TOTAL_SUPPLY = 10_000_000_000 * 10**18; // 10 billion tokens\r
    \r
    // Distribution amounts (in tokens with 18 decimals)\r
    uint256 public constant PRESALE_AMOUNT = 2_400_000_000 * 10**18;      // 24%\r
    uint256 public constant CLIMATE_AMOUNT = 2_100_000_000 * 10**18;      // 21%\r
    uint256 public constant LIQUIDITY_AMOUNT = 1_900_000_000 * 10**18;    // 19%\r
    uint256 public constant PARTNERSHIPS_AMOUNT = 1_000_000_000 * 10**18; // 10%\r
    uint256 public constant TEAM_AMOUNT = 1_000_000_000 * 10**18;         // 10%\r
    uint256 public constant MARKETING_AMOUNT = 600_000_000 * 10**18;      // 6%\r
    uint256 public constant DEVELOPMENT_AMOUNT = 500_000_000 * 10**18;    // 5%\r
    uint256 public constant COMMUNITY_AMOUNT = 500_000_000 * 10**18;      // 5%\r
    uint256 public constant BURN_AMOUNT = 500_000_000 * 10**18;           // 5%\r
    \r
    // Vesting constants\r
    uint256 public constant TEAM_VESTING_DURATION = 24 * 30 days; // 24 months\r
    uint256 public constant CLIFF_PERIOD = 0; // No cliff for team\r
    \r
    // Wallet addresses\r
    address public presaleWallet;\r
    address public climateWallet;\r
    address public liquidityWallet;\r
    address public partnershipsWallet;\r
    address public teamWallet;\r
    address public marketingWallet;\r
    address public developmentWallet;\r
    address public communityWallet;\r
    address public burnWallet;\r
    \r
    // Vesting variables\r
    uint256 public tgeTimestamp;\r
    uint256 public teamVestingReleased;\r
    bool public walletsSet;\r
    bool public tgeExecuted;\r
    \r
    // Events\r
    event WalletsConfigured(\r
        address presale,\r
        address climate,\r
        address liquidity,\r
        address partnerships,\r
        address team,\r
        address marketing,\r
        address development,\r
        address community,\r
        address burn\r
    );\r
    \r
    event TGEExecuted(uint256 timestamp);\r
    event TeamVestingReleased(uint256 amount, uint256 timestamp);\r
    \r
    constructor() ERC20("Carbon Pepe X", "CPX") Ownable(msg.sender) {\r
        // Mint total supply to contract\r
        _mint(address(this), TOTAL_SUPPLY);\r
    }\r
    \r
    /**\r
     * @dev Set all wallet addresses (can only be called once)\r
     */\r
    function setWallets(\r
        address _presaleWallet,\r
        address _climateWallet,\r
        address _liquidityWallet,\r
        address _partnershipsWallet,\r
        address _teamWallet,\r
        address _marketingWallet,\r
        address _developmentWallet,\r
        address _communityWallet,\r
        address _burnWallet\r
    ) external onlyOwner {\r
        require(!walletsSet, "Wallets already configured");\r
        require(_presaleWallet != address(0), "Invalid presale wallet");\r
        require(_climateWallet != address(0), "Invalid climate wallet");\r
        require(_liquidityWallet != address(0), "Invalid liquidity wallet");\r
        require(_partnershipsWallet != address(0), "Invalid partnerships wallet");\r
        require(_teamWallet != address(0), "Invalid team wallet");\r
        require(_marketingWallet != address(0), "Invalid marketing wallet");\r
        require(_developmentWallet != address(0), "Invalid development wallet");\r
        require(_communityWallet != address(0), "Invalid community wallet");\r
        require(_burnWallet != address(0), "Invalid burn wallet");\r
        \r
        presaleWallet = _presaleWallet;\r
        climateWallet = _climateWallet;\r
        liquidityWallet = _liquidityWallet;\r
        partnershipsWallet = _partnershipsWallet;\r
        teamWallet = _teamWallet;\r
        marketingWallet = _marketingWallet;\r
        developmentWallet = _developmentWallet;\r
        communityWallet = _communityWallet;\r
        burnWallet = _burnWallet;\r
        \r
        walletsSet = true;\r
        \r
        emit WalletsConfigured(\r
            _presaleWallet,\r
            _climateWallet,\r
            _liquidityWallet,\r
            _partnershipsWallet,\r
            _teamWallet,\r
            _marketingWallet,\r
            _developmentWallet,\r
            _communityWallet,\r
            _burnWallet\r
        );\r
    }\r
    \r
    /**\r
     * @dev Execute TGE (Token Generation Event) - distribute tokens immediately\r
     */\r
    function executeTGE() external onlyOwner nonReentrant {\r
        require(walletsSet, "Wallets not configured");\r
        require(!tgeExecuted, "TGE already executed");\r
        \r
        tgeTimestamp = block.timestamp;\r
        tgeExecuted = true;\r
        \r
        // Distribute tokens immediately (all except team)\r
        _transfer(address(this), presaleWallet, PRESALE_AMOUNT);\r
        _transfer(address(this), climateWallet, CLIMATE_AMOUNT);\r
        _transfer(address(this), liquidityWallet, LIQUIDITY_AMOUNT);\r
        _transfer(address(this), partnershipsWallet, PARTNERSHIPS_AMOUNT);\r
        _transfer(address(this), marketingWallet, MARKETING_AMOUNT);\r
        _transfer(address(this), developmentWallet, DEVELOPMENT_AMOUNT);\r
        _transfer(address(this), communityWallet, COMMUNITY_AMOUNT);\r
        \r
        // Burn tokens\r
        _transfer(address(this), burnWallet, BURN_AMOUNT);\r
        \r
        // Team tokens remain in contract for vesting\r
        \r
        emit TGEExecuted(tgeTimestamp);\r
    }\r
    \r
    /**\r
     * @dev Release team vesting tokens\r
     */\r
    function releaseTeamVesting() external onlyOwner nonReentrant {\r
        require(tgeExecuted, "TGE not executed");\r
        require(block.timestamp >= tgeTimestamp, "Vesting not started");\r
        \r
        uint256 vestedAmount = calculateTeamVestedAmount();\r
        uint256 releasableAmount = vestedAmount - teamVestingReleased;\r
        \r
        require(releasableAmount > 0, "No tokens to release");\r
        \r
        teamVestingReleased += releasableAmount;\r
        _transfer(address(this), teamWallet, releasableAmount);\r
        \r
        emit TeamVestingReleased(releasableAmount, block.timestamp);\r
    }\r
    \r
    /**\r
     * @dev Calculate vested amount for team\r
     */\r
    function calculateTeamVestedAmount() public view returns (uint256) {\r
        if (!tgeExecuted || block.timestamp < tgeTimestamp) {\r
            return 0;\r
        }\r
        \r
        uint256 elapsedTime = block.timestamp - tgeTimestamp;\r
        \r
        if (elapsedTime >= TEAM_VESTING_DURATION) {\r
            return TEAM_AMOUNT;\r
        }\r
        \r
        return (TEAM_AMOUNT * elapsedTime) / TEAM_VESTING_DURATION;\r
    }\r
    \r
    /**\r
     * @dev Get team vesting status\r
     */\r
    function getTeamVestingStatus() external view returns (\r
        uint256 totalAmount,\r
        uint256 vestedAmount,\r
        uint256 releasedAmount,\r
        uint256 remainingAmount,\r
        uint256 nextReleaseTime\r
    ) {\r
        totalAmount = TEAM_AMOUNT;\r
        vestedAmount = calculateTeamVestedAmount();\r
        releasedAmount = teamVestingReleased;\r
        remainingAmount = totalAmount - releasedAmount;\r
        \r
        if (tgeExecuted && block.timestamp < tgeTimestamp + TEAM_VESTING_DURATION) {\r
            nextReleaseTime = tgeTimestamp + TEAM_VESTING_DURATION;\r
        } else {\r
            nextReleaseTime = 0;\r
        }\r
    }\r
    \r
    /**\r
     * @dev Get contract status\r
     */\r
    function getContractStatus() external view returns (\r
        bool _walletsSet,\r
        bool _tgeExecuted,\r
        uint256 _tgeTimestamp,\r
        uint256 _contractBalance\r
    ) {\r
        _walletsSet = walletsSet;\r
        _tgeExecuted = tgeExecuted;\r
        _tgeTimestamp = tgeTimestamp;\r
        _contractBalance = balanceOf(address(this));\r
    }\r
    \r
    /**\r
     * @dev Get distribution summary\r
     */\r
    function getDistributionSummary() external pure returns (\r
        uint256 presaleAmount,\r
        uint256 climateAmount,\r
        uint256 liquidityAmount,\r
        uint256 partnershipsAmount,\r
        uint256 teamAmount,\r
        uint256 marketingAmount,\r
        uint256 developmentAmount,\r
        uint256 communityAmount,\r
        uint256 burnAmount,\r
        uint256 totalSupply\r
    ) {\r
        presaleAmount = PRESALE_AMOUNT;\r
        climateAmount = CLIMATE_AMOUNT;\r
        liquidityAmount = LIQUIDITY_AMOUNT;\r
        partnershipsAmount = PARTNERSHIPS_AMOUNT;\r
        teamAmount = TEAM_AMOUNT;\r
        marketingAmount = MARKETING_AMOUNT;\r
        developmentAmount = DEVELOPMENT_AMOUNT;\r
        communityAmount = COMMUNITY_AMOUNT;\r
        burnAmount = BURN_AMOUNT;\r
        totalSupply = TOTAL_SUPPLY;\r
    }\r
    \r
    /**\r
     * @dev Update wallet address (emergency function)\r
     */\r
    function updateWallet(\r
        string memory walletType,\r
        address newWallet\r
    ) external onlyOwner {\r
        require(newWallet != address(0), "Invalid wallet address");\r
        \r
        bytes32 walletHash = keccak256(abi.encodePacked(walletType));\r
        \r
        if (walletHash == keccak256(abi.encodePacked("presale"))) {\r
            presaleWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("climate"))) {\r
            climateWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("liquidity"))) {\r
            liquidityWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("partnerships"))) {\r
            partnershipsWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("team"))) {\r
            teamWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("marketing"))) {\r
            marketingWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("development"))) {\r
            developmentWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("community"))) {\r
            communityWallet = newWallet;\r
        } else if (walletHash == keccak256(abi.encodePacked("burn"))) {\r
            burnWallet = newWallet;\r
        } else {\r
            revert("Invalid wallet type");\r
        }\r
        \r
        emit WalletUpdated(walletType, newWallet);\r
    }\r
    \r
    /**\r
     * @dev Force transfer tokens (emergency function)\r
     */\r
    function forceTransfer(\r
        address from,\r
        address to,\r
        uint256 amount\r
    ) external onlyOwner {\r
        require(to != address(0), "Invalid recipient");\r
        require(amount > 0, "Amount must be greater than 0");\r
        \r
        if (from == address(this)) {\r
            _transfer(address(this), to, amount);\r
        } else {\r
            _transfer(from, to, amount);\r
        }\r
        \r
        emit ForceTransfer(from, to, amount);\r
    }\r
    \r
    /**\r
     * @dev Reset TGE status (emergency function - use with caution)\r
     */\r
    function resetTGE() external onlyOwner {\r
        require(tgeExecuted, "TGE not executed yet");\r
        tgeExecuted = false;\r
        tgeTimestamp = 0;\r
        teamVestingReleased = 0;\r
        \r
        emit TGEReset(block.timestamp);\r
    }\r
    \r
    /**\r
     * @dev Adjust team vesting parameters (emergency function)\r
     */\r
    function adjustTeamVesting(uint256 newDuration) external onlyOwner {\r
        require(newDuration > 0, "Duration must be greater than 0");\r
        require(tgeExecuted, "TGE not executed");\r
        \r
        // This would require modifying the constant, so we'll emit an event for tracking\r
        emit TeamVestingAdjusted(newDuration, block.timestamp);\r
    }\r
    \r
    /**\r
     * @dev Manual team vesting release (emergency function)\r
     */\r
    function manualTeamVestingRelease(uint256 amount) external onlyOwner nonReentrant {\r
        require(tgeExecuted, "TGE not executed");\r
        require(amount > 0, "Amount must be greater than 0");\r
        require(balanceOf(address(this)) >= amount, "Insufficient contract balance");\r
        require(teamVestingReleased + amount <= TEAM_AMOUNT, "Exceeds team allocation");\r
        \r
        teamVestingReleased += amount;\r
        _transfer(address(this), teamWallet, amount);\r
        \r
        emit ManualTeamVestingRelease(amount, block.timestamp);\r
    }\r
    \r
    /**\r
     * @dev Pause/Unpause token transfers (emergency function)\r
     */\r
    bool public transfersPaused = false;\r
    \r
    function pauseTransfers() external onlyOwner {\r
        transfersPaused = true;\r
        emit TransfersPaused(block.timestamp);\r
    }\r
    \r
    function unpauseTransfers() external onlyOwner {\r
        transfersPaused = false;\r
        emit TransfersUnpaused(block.timestamp);\r
    }\r
    \r
    /**\r
     * @dev Override transfer to implement pause functionality\r
     */\r
    function _update(address from, address to, uint256 value) internal override {\r
        if (transfersPaused && from != address(0) && to != address(0)) {\r
            require(from == owner() || to == owner(), "Transfers are paused");\r
        }\r
        super._update(from, to, value);\r
    }\r
    \r
    /**\r
     * @dev Emergency function to withdraw tokens (only owner)\r
     */\r
    function emergencyWithdraw(address token, uint256 amount, address to) external onlyOwner {\r
        require(to != address(0), "Invalid recipient");\r
        \r
        if (token == address(0)) {\r
            // Withdraw ETH\r
            payable(to).transfer(amount);\r
        } else {\r
            // Withdraw ERC20 tokens\r
            IERC20(token).transfer(to, amount);\r
        }\r
    }\r
    \r
    // Additional events for admin functions\r
    event WalletUpdated(string walletType, address newWallet);\r
    event ForceTransfer(address indexed from, address indexed to, uint256 amount);\r
    event TGEReset(uint256 timestamp);\r
    event TeamVestingAdjusted(uint256 newDuration, uint256 timestamp);\r
    event ManualTeamVestingRelease(uint256 amount, uint256 timestamp);\r
    event TransfersPaused(uint256 timestamp);\r
    event TransfersUnpaused(uint256 timestamp);\r
    \r
    /**\r
     * @dev Allow contract to receive ETH\r
     */\r
    receive() external payable {}\r
}\r
"
    },
    "@openzeppelin/contracts/utils/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}
"
    },
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
"
    },
    "@openzeppelin/contracts/token/ERC20/ERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC-20
 * applications.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * Both values are immutable: they can only be set once during construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /// @inheritdoc IERC20
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /// @inheritdoc IERC20
    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /// @inheritdoc IERC20
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Skips emitting an {Approval} event indicating an allowance update. This is not
     * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner`'s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     *
     * ```solidity
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner`'s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance < type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}
"
    },
    "@openzeppelin/contracts/interfaces/draft-IERC6093.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/draft-IERC6093.sol)
pragma solidity >=0.8.4;

/**
 * @dev Standard ERC-20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC-721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC-1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}
"
    },
    "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity >=0.6.2;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}
"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "remappings": [],
    "evmVersion": "london"
  }
}}