ETH Price: $3,343.99 (-0.68%)
Gas: 5 Gwei

Contract

0x21eB9cA6ED727FBa2a60B889c38AC1697e8e1116
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Withdraw151193842022-07-11 5:08:53750 days ago1657516133IN
0x21eB9cA6...97e8e1116
0 ETH0.0005245214.64858483
Register151181572022-07-11 0:38:36750 days ago1657499916IN
0x21eB9cA6...97e8e1116
0 ETH0.001937514.02173578
Register151180152022-07-11 0:06:13750 days ago1657497973IN
0x21eB9cA6...97e8e1116
0 ETH0.0015564814.36411989
Register151179792022-07-10 23:59:32750 days ago1657497572IN
0x21eB9cA6...97e8e1116
0 ETH0.001262939.13981797
Register151179182022-07-10 23:47:12750 days ago1657496832IN
0x21eB9cA6...97e8e1116
0 ETH0.0016888815.58597908
Register151178902022-07-10 23:39:46750 days ago1657496386IN
0x21eB9cA6...97e8e1116
0 ETH0.001164348.42633204
Register151176512022-07-10 22:47:31750 days ago1657493251IN
0x21eB9cA6...97e8e1116
0 ETH0.0029017521
Register151176222022-07-10 22:42:00750 days ago1657492920IN
0x21eB9cA6...97e8e1116
0 ETH0.0014930519.01033507
Register151174762022-07-10 22:10:19750 days ago1657491019IN
0x21eB9cA6...97e8e1116
0 ETH0.002257830.61891437
Register151174062022-07-10 21:52:33750 days ago1657489953IN
0x21eB9cA6...97e8e1116
0 ETH0.0023122921.3392426
Register151173072022-07-10 21:32:13750 days ago1657488733IN
0x21eB9cA6...97e8e1116
0 ETH0.0016215514.9647006
Register151160512022-07-10 16:48:11750 days ago1657471691IN
0x21eB9cA6...97e8e1116
0 ETH0.0052409837.92892698
Register151158632022-07-10 16:05:25750 days ago1657469125IN
0x21eB9cA6...97e8e1116
0 ETH0.0042793339.49222622
Register151157032022-07-10 15:28:07750 days ago1657466887IN
0x21eB9cA6...97e8e1116
0 ETH0.0012015715.29907789
Register151156202022-07-10 15:14:03750 days ago1657466043IN
0x21eB9cA6...97e8e1116
0 ETH0.0024386231.04986823
Register151155762022-07-10 15:05:32750 days ago1657465532IN
0x21eB9cA6...97e8e1116
0 ETH0.0063215745.74915215
Register151155102022-07-10 14:50:17750 days ago1657464617IN
0x21eB9cA6...97e8e1116
0 ETH0.0013329516.97190424
Register151154962022-07-10 14:48:27750 days ago1657464507IN
0x21eB9cA6...97e8e1116
0 ETH0.0019153824.38769385
Register151153612022-07-10 14:17:44750 days ago1657462664IN
0x21eB9cA6...97e8e1116
0 ETH0.0020253825.78820788
Register151153252022-07-10 14:08:44750 days ago1657462124IN
0x21eB9cA6...97e8e1116
0 ETH0.0018798323.93505041
Register151152612022-07-10 13:52:12750 days ago1657461132IN
0x21eB9cA6...97e8e1116
0 ETH0.0014846213.70101438
Register151151962022-07-10 13:39:15750 days ago1657460355IN
0x21eB9cA6...97e8e1116
0 ETH0.0024269717.56398396
Register151151472022-07-10 13:30:01750 days ago1657459801IN
0x21eB9cA6...97e8e1116
0 ETH0.0015642119.91635681
Register151151402022-07-10 13:28:02750 days ago1657459682IN
0x21eB9cA6...97e8e1116
0 ETH0.0021663515.67786997
Register151151242022-07-10 13:24:33750 days ago1657459473IN
0x21eB9cA6...97e8e1116
0 ETH0.0014096213.00881758
View all transactions

View more zero value Internal Transactions in Advanced View mode

Advanced mode:
Loading...
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
TournamentEntryV2

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
File 1 of 7 : TournamentEntryV2.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.1;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";

contract TournamentEntryV2 is Ownable {
    ERC20Burnable private immutable _token;

    uint256 public startsAt;
    uint256 public endsAt;
    uint256 public registerFee;
    uint256 public maxEntry;

    event Register(address indexed participants, uint256 indexed group);

    mapping(uint256 => uint256) public groupCount;

    // map[group][address] = bool, group(1~60)
    mapping(uint256 => mapping(address => bool)) public isRegistered;


    constructor(address _tokenAddress) {
        // 2022년 6월 21일 화요일 오후 8:00:00 GMT+09:00
        startsAt = 1655809200;
        // 2022년 6월 21일 화요일 오후 10:00:00 GMT+09:00
        endsAt = 1655816400;

        // Mon, Wed, Fri : 5 * 1e18, Sat, Sun : 50 * 1e18
        registerFee = 5 * 1e18;
        _token = ERC20Burnable(_tokenAddress);

        // 그룹 카운트 초기 값이 1이므로 +1을 해준다.
        maxEntry = 128 + 1;

        for (uint256 i = 0; i < 60; i++) {
            groupCount[i] = 1;
        }
    }

    function register(uint256[] calldata groups) external {
        uint256 totalFee = groups.length * registerFee;
        require(block.timestamp >= startsAt && block.timestamp < endsAt, "TournamentEntryV2: Invalid tournament registration period.");

        for (uint256 i = 0; i < groups.length; i++)
        {
            _register(groups[i]);
        }
        _token.transferFrom(msg.sender, address(this), totalFee);
    }

    function _register(uint256 group) internal {
        require(isRegistered[group][msg.sender] == false, "TournamentEntryV2: Already registered.");
        require(groupCount[group] < maxEntry, "TournamentEntryV2: Out of register ticket.");

        groupCount[group]++;
        isRegistered[group][msg.sender] = true;
        emit Register(msg.sender, group);
    }

    function length(uint256 group) external view returns (uint256) {
        return groupCount[group] - 1;
    }

    function withdraw() external onlyOwner {
        _token.transfer(owner(), _token.balanceOf(address(this)));
    }

    function setStartsAt(uint256 _startsAt) external onlyOwner {
        startsAt = _startsAt;
    }

    function setEndsAt(uint256 _endsAt) external onlyOwner {
        endsAt = _endsAt;
    }

    function setRegisterFee(uint256 _registerFee) external onlyOwner {
        registerFee = _registerFee;
    }

    function setMaxParticipants(uint256 _maxEntry) external onlyOwner {
        maxEntry = _maxEntry + 1;
    }

    function burnFee() external onlyOwner {
        _token.burn(_token.balanceOf(address(this)) * uint256(15) / uint256(100));
    }
}

File 2 of 7 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../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.
 *
 * By default, the owner account will be the one that deploys the contract. 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;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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 {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _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);
    }
}

File 3 of 7 : ERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.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}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * 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 ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these 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 override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override 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 value {ERC20} uses, unless this function is
     * 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 override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override 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 `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` 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 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * 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 `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, _allowances[owner][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = _allowances[owner][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * 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.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
        }
        _balances[to] += amount;

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` 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.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        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);
    }

    /**
     * @dev Spend `amount` form the allowance of `owner` toward `spender`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

File 4 of 7 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 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);
}

File 5 of 7 : ERC20Burnable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol)

pragma solidity ^0.8.0;

import "../ERC20.sol";
import "../../../utils/Context.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        _spendAllowance(account, _msgSender(), amount);
        _burn(account, amount);
    }
}

File 6 of 7 : IERC20Metadata.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @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);
}

File 7 of 7 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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;
    }
}

Settings
{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_tokenAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"participants","type":"address"},{"indexed":true,"internalType":"uint256","name":"group","type":"uint256"}],"name":"Register","type":"event"},{"inputs":[],"name":"burnFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"endsAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"groupCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"isRegistered","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"group","type":"uint256"}],"name":"length","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxEntry","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"groups","type":"uint256[]"}],"name":"register","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"registerFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_endsAt","type":"uint256"}],"name":"setEndsAt","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxEntry","type":"uint256"}],"name":"setMaxParticipants","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_registerFee","type":"uint256"}],"name":"setRegisterFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_startsAt","type":"uint256"}],"name":"setStartsAt","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startsAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000092925acf2771bc59143228499f9610fe5176eb9c

-----Decoded View---------------
Arg [0] : _tokenAddress (address): 0x92925Acf2771Bc59143228499f9610FE5176eb9C

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000092925acf2771bc59143228499f9610fe5176eb9c


Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
Loading...
Loading
[ Download: CSV Export  ]

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.