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Verify Your Pool Contract

Copy the Solidity code below and use it to verify your pool contract on VinuChain Explorer.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/**
 * @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;
    }
}

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
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 amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` 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 amount) 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 `amount` 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 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` 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 amount) external returns (bool);
}

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
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);
}

contract StakingPool is Context {
    address public stakeToken;
    address public creator;
    uint256 public apr;
    uint256 public lockDays;
    uint256 public minStake;
    mapping(address => uint256) public stakedBalance;
    mapping(address => uint256) public lastStakedTime;
    uint256 public totalStaked;
    uint256 public totalStakers;
    bool public paused;

    constructor(address _stakeToken, uint256 _apr, uint256 _lockDays, uint256 _minStake, address _creator) {
        stakeToken = _stakeToken;
        apr = _apr;
        lockDays = _lockDays;
        minStake = _minStake;
        creator = _creator;
    }

    function stake(uint256 amount) external {
        require(!paused, "Pool is paused");
        require(amount >= minStake, "Below minimum stake");
        IERC20(stakeToken).transferFrom(_msgSender(), address(this), amount);
        stakedBalance[_msgSender()] += amount;
        lastStakedTime[_msgSender()] = block.timestamp;
        totalStaked += amount;
        if (stakedBalance[_msgSender()] == amount) totalStakers += 1;
    }

    function unstake() external {
        require(!paused, "Pool is paused");
        require(stakedBalance[_msgSender()] > 0, "No stake");
        require(block.timestamp >= lastStakedTime[_msgSender()] + lockDays * 1 days, "Lock period not over");
        uint256 amount = stakedBalance[_msgSender()];
        stakedBalance[_msgSender()] = 0;
        totalStaked -= amount;
        totalStakers -= 1;
        IERC20(stakeToken).transfer(_msgSender(), amount);
    }

    function getPendingRewards(address user) external view returns (uint256) {
        uint256 timeElapsed = block.timestamp - lastStakedTime[user];
        return (stakedBalance[user] * apr * timeElapsed) / (365 * 1 days * 100);
    }

    function claimRewards() external {
        require(!paused, "Pool is paused");
        uint256 rewards = this.getPendingRewards(_msgSender());
        require(rewards > 0, "No rewards");
        lastStakedTime[_msgSender()] = block.timestamp;
        IERC20(stakeToken).transfer(_msgSender(), rewards);
    }

    function pause(bool _status) external {
        require(_msgSender() == creator, "Not creator");
        paused = _status;
    }
}

Steps to verify:

Visit VinuChain Explorer and search for your pool address.
Click "Verify & Publish Contract Source Code."
Select "Single File," paste the code above, and enter constructor arguments:
- stakeToken: Token address used in pool creation.
- apr: APR in basis points (e.g., 10% = 1000).
- lockDays: Lock period in days (e.g., 30).
- minStake: Minimum stake in Wei (e.g., 100 * 10^18).
- creator: Your wallet address.
Submit and wait for verification (1-5 minutes).

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