Contract 0x2b974da27c9dd35412d71dd36e3e108486c45444

 
Txn Hash
Block
From
To
Value [Txn Fee]
0xf8d3ba85cd01bd4c5f2044126065923d484891321dcb153b90d7c82325fd636f82827122021-06-14 6:28:367 hrs 45 mins ago0x448de248a7bea8f85b3b51c4bd417e17b8913c9d IN  Cryptoz: CZXP Token0 BNB0.000266568
0x7a1ea2816affbec69d3e8f4505b8dfa3107a9cf99d017b6983511590558e271082714412021-06-13 20:55:1217 hrs 18 mins ago0x7ee8030b4780afcafc1d92f31b0df12aa751e86a IN  Cryptoz: CZXP Token0 BNB0.000266568
0xda0d24aa8103324cd15474842798eb5927ec0ba8a46bbc5616ed3fc58557b3b682648522021-06-13 15:21:5122 hrs 52 mins ago0x0820cbc8520e76453e086989ef2a6147a0687857 IN  Cryptoz: CZXP Token0 BNB0.00022214
0x2ad2e007c99ebad01e15ea605bef50aa5b59d8c8655dd1fec9f689fef202cf7d82584882021-06-13 10:00:301 day 4 hrs ago0x0820cbc8520e76453e086989ef2a6147a0687857 IN  Cryptoz: CZXP Token0 BNB0.00022214
0x4bf158955129ed12990a2471d245b89555703f7436318b83cc69a88d20a3bc4782509352021-06-13 3:39:141 day 10 hrs ago0xefa39596a3b6782b9f20857bf3059e40ff4c7172 IN  Cryptoz: CZXP Token0 BNB0.00022214
0xb2c69a9d5d64b6408d8109e9ccd0669b7e66dc1b640b451072f825d5915394c782379622021-06-12 16:44:351 day 21 hrs ago0x2a4d5d2ec69fd926b9e222fe0e546056d8c8e969 IN  Cryptoz: CZXP Token0 BNB0.00022214
0xc2e422c27ddcd613fb657d1e4a609344189da67d25c525e323fc77f252db13b882358652021-06-12 14:59:441 day 23 hrs ago0x69a98ea7f7a3d28bd67b88237807753874c45d87 IN  Cryptoz: CZXP Token0 BNB0.00022214
0x2add4b8a4f3527ce52439627051820089ee167da525db1e115ac6b99ab9b36a781953342021-06-11 5:06:433 days 9 hrs ago0xf0722f82b0bfce4a11b6049bd74b6145e56ecf99 IN  Cryptoz: CZXP Token0 BNB0.00022214
0xa2dd8943e95e6f8b5a99c00819978c2b8b3961d77d941e1be6b9703018abd83281932252021-06-11 3:21:163 days 10 hrs ago0x1ffaf274b654c3282c361b8c776498f706435bf9 IN  Cryptoz: CZXP Token0 BNB0.00018044
0x0e44fce3670a23bef29410f9e9fa2136d1061afa58c17ba3447fe9e37a7bf04a81656512021-06-10 4:15:464 days 9 hrs ago0xd00ff8e277c042baf3f49c1a57050944778541ed IN  Cryptoz: CZXP Token0 BNB0.0001055
0x70842e61b6fad7687d61f9b98b71d46fb61bf0eae3b08c4bc3b429b0793a16a581653852021-06-10 4:02:284 days 10 hrs ago0xd8f07ce297089bc94a9bed33b98f414038fea5ee IN  Cryptoz: CZXP Token0 BNB0.0001055
0xd274545ef28215c1cb935dd439902c82989e5d6bb358f29a77d7f1e31fa1932e81648412021-06-10 3:35:124 days 10 hrs ago0xc9d05cd6a3812e2e929c5acd871983fef94d0b89 IN  Cryptoz: CZXP Token0 BNB0.0001055
0x1e7ccf73163657efd4247fecad921616c7136ea648c75f1014a9ba9847e6a44c81644472021-06-10 3:15:304 days 10 hrs ago0xe5a71330165a7c031044f9c234013442e3a36908 IN  Cryptoz: CZXP Token0 BNB0.0001805
0xfff03cba384e8f059c3bdcc04e2efe3a1b93e7c3a1420cfaaa1fb2f8ab5ed53881641252021-06-10 2:59:214 days 11 hrs ago0xfe4bfebd46a24b75ae1486ebe4d60a4b44eecf8e IN  Cryptoz: CZXP Token0 BNB0.00007261
0x6abdcc36b3a3d3f527b9d1ae53459615487fd7713ddef37408c2db4d37a7556381553122021-06-09 19:37:184 days 18 hrs ago0x60f4c86457c1954c0ca963dc03534c3311967beb IN  Cryptoz: CZXP Token0 BNB0.00022214
0x0e63863cfeea3ea6d44723ac19dcd6540457419d599ed09f561f78e847a7311b81544182021-06-09 18:52:234 days 19 hrs ago0x32e013952f1c156fc3464c76a367aa926fec8d2a IN  Cryptoz: CZXP Token0 BNB0.00018044
0x5cfc897b1e7c89604b640c8c461fd808a07a4956c9d5c7c256b8c84836915b5581531902021-06-09 17:50:584 days 20 hrs ago0xb8213bde038522b6815d7d73298cabdfe8b2a3ac IN  Cryptoz: CZXP Token0 BNB0.00026061
0x84344c97575d56f81c05b50e683f667b6344f4b04087efc15779c80e0322854481519632021-06-09 16:49:254 days 21 hrs ago0xf408796fee9376797fe98852f6e5aa407cbcbfa8 IN  Cryptoz: CZXP Token0 BNB0.00022214
0xe36d0adc78bb02513817f590f89f746dd9e3c5c05c49b8fe35bb0bbfe982fbb181519142021-06-09 16:46:584 days 21 hrs ago0x6fe2967118b8a34eaab1d43d5ce78003aa9cd0bd IN  Cryptoz: CZXP Token0 BNB0.00025556
0x5f611af84842b9b18f54e37606c1fbde4afb64f988dce4bd815c9cba8d61434581449052021-06-09 10:55:255 days 3 hrs ago0x545ad96132991371050c1f2ca5554fb5fdc9f02f IN  Cryptoz: CZXP Token0 BNB0.00022214
0x0977c1fd0bcdb1bbe035a603caa4b5ac7d369cb61b629f35cf7a7f25bdd91c1981448402021-06-09 10:52:105 days 3 hrs ago0x6fe2967118b8a34eaab1d43d5ce78003aa9cd0bd IN  Cryptoz: CZXP Token0 BNB0.00025556
0xfa6e52038205f35d016f4a10e409da22f28d81c8e52361c834e770f1837fb40781447942021-06-09 10:49:525 days 3 hrs ago0x545ad96132991371050c1f2ca5554fb5fdc9f02f IN  Cryptoz: CZXP Token0 BNB0.000117505
0xa52719a1c5336276599a76b11b5baa2eb9bdcbc91e93027fe85de8b08607644e81373042021-06-09 4:34:185 days 9 hrs ago0xd1b0bdd8949a0afbea208b5c85a313fab9a9255d IN  Cryptoz: CZXP Token0 BNB0.00022214
0x6304ec596d8f21fd4f5c21de7fe3bfd20aad5b63a86d2966b79a23d12daa5c1581372672021-06-09 4:32:275 days 9 hrs ago0x6fe2967118b8a34eaab1d43d5ce78003aa9cd0bd IN  Cryptoz: CZXP Token0 BNB0.00025556
0xcdfcc7b7d3a32953231b87a0a8c98da4935905108a5ccaf4ffb052e41a7750bd81265232021-06-08 19:32:545 days 18 hrs ago0x45ee4b314042c98808533cf3e6aa42b4a0eed5f8 IN  Cryptoz: CZXP Token0 BNB0.0002166
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OVERVIEW

CryptoZ offers NFT collection whereby each minted NFT Cryptoz card is a unique token on the BSC. Collectors can buy, sell, and exchange both their Cryptoz NFT cards and CZXP tokens through any standards compliant wallets, markets, game engines, exchanges, DeFi and other future inventions.

Latest 5 internal transactions
Parent Txn Hash Block From To Value
0x221c4aa63b989f2f284f4349c99e36a8f7baafc3e4968298e2ee0a654d372b7856333342021-03-13 3:10:4993 days 11 hrs ago Cryptoz: CZXP TokenCryptoz: Deployer8.032 BNB
0x9fddad8f85b28982bfa70ac5df4bb4d5f4f2aa7e14c074b24b8a1f59a0567b5b56283482021-03-12 23:01:2293 days 15 hrs ago Cryptoz: CZXP TokenCryptoz: Deployer19.280800000000000002 BNB
0xdbc1ca92c93abd3288af8fde7b28d456af6c5dd23d27895c81180550491a805156257672021-03-12 20:50:1193 days 17 hrs ago Cryptoz: CZXP TokenCryptoz: Deployer6.9827 BNB
0xce3f3ce6c0a0e973dce6e8e054fdb5a6e90e4fe9efa47f82229d3f7612156aac55767692021-03-11 3:56:4695 days 10 hrs ago Cryptoz: CZXP TokenCryptoz: Deployer0.21 BNB
0x7e515f1163cbd7a0ff5e7cd5d23f9c85f79fb73c5fa2d060a990a8f84252f12855751692021-03-11 2:36:4695 days 11 hrs ago Cryptoz: CZXP TokenCryptoz: Deployer10.6 BNB
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Contract Source Code Verified (Exact Match)

Contract Name:
CzxpToken

Compiler Version
v0.5.9+commit.c68bc34e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, GNU GPLv3 license

Contract Source Code (Solidity)

/**
 *Submitted for verification at BscScan.com on 2021-03-11
*/

// File: @openzeppelin/contracts/GSN/Context.sol

pragma solidity ^0.5.0;

/*
 * @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 GSN 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.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// File: @openzeppelin/contracts/ownership/Ownable.sol

pragma solidity ^0.5.0;

/**
 * @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.
 *
 * 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.
 */
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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

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

    /**
     * @dev Returns true if the caller is the current owner.
     */
    function isOwner() public view returns (bool) {
        return _msgSender() == _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 onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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 onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol

pragma solidity ^0.5.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, 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: @openzeppelin/contracts/math/SafeMath.sol

pragma solidity ^0.5.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     *
     * _Available since v2.4.0._
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// File: @openzeppelin/contracts/token/ERC20/ERC20.sol

pragma solidity ^0.5.0;




/**
 * @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 {ERC20Mintable}.
 *
 * 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 guidelines: functions revert instead
 * of 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 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

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

    uint256 private _totalSupply;

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

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

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

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public returns (bool) {
        _approve(_msgSender(), 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};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        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 returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(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 returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

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

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, 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
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(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 {
        require(account != address(0), "ERC20: burn from the zero address");

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is 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 {
        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 Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance"));
    }
}

// File: contracts/CZXPToken.sol

pragma solidity ^0.5.0;

/******************************************

Our Matra our Motto for coding The Cryptoz Universe.

      Fail EARLY and Fail LOUD !!!!!!!

1.    First - Check all pre-conditions
2.    Then  - make changes to contract state
3.    Final - interact with other contracts

Pull funds over pushing them
Platform limits like max of 1023 loop interations.

all Events start with Log

******************************************/



contract CzxpToken is Ownable,ERC20 {

//1. Condition
//2. Effects
//3.Interaction
    
    /*
    * We accept payment for the token generation event only
    * Rules:
    *   Founders-pre:        6000000
    *   TGE - max   :     1000000000
    *   start is    :    Mar  9,2021
    *   end is      :        No date
    *   min         :  0.0000001 BNB
    *   max         :          1 BNB
    *   max wallets :            100
    */



// Advisor+team wallets
    address[] advisors = [
         0x60D7a79367B35573B27E4F020794AEF299E9fd49, //owner
         0x591D4Fe5f1e147eac7b144C43e4f2A0d83a4DF84, //M
         0x4b01629a1bAf82D8aB62726776b1332539E51cEc  //R
    ];

// Public variables of the token
    string public name          = "Cryptoz eXPerience";
    string public symbol        = "CZXP";
    uint8  public decimals      = 0;
    uint8  public walletCounter = 0;
    
//Storage
    //supporters
    mapping (address => uint256) public contributions;    // BNB contributed per address

//TGE restrictions
    //Token Generation event
    bool public isTGE = false;
    bool public TGEcomplete = false;
    uint256 maxCap = 1000000000000000000; //in wei
    
//Our external cryptozContract
    address private cryptozContract;
    
    //MODIFIERS
    modifier checkTGE(){
        require(isTGE);
        _;
    }
    
    modifier onlyAuthorizedContract(){
        require(msg.sender == cryptozContract,"Caller not authorized for this action");
        _;
    }
    
    // ALL FUNCTIONS
    function() external {
        revert();
    }

    
    function setCryptozContract(address _cryptozContract) public onlyOwner{
        require(_cryptozContract != address(0x0));
        cryptozContract = _cryptozContract;
    }
    
    function getCrypozContractAddress() public view returns(address){
        return cryptozContract;
    }

    /*
    *   Make sure we accept payment only during TGE
    */
    function buy() payable checkTGE external {
        require(walletCounter < 101, "A maximum of 100 unique wallets has been reached");
        require(msg.sender != address(0));
        
        //We dont offer less than 1 czxp
        require(msg.value >= 0.0000001 ether,"Contribution must be greater than 0.0000001");
        
        //Check contributor is under the cap
        require(contributions[msg.sender] <= maxCap,"Contribution is over the maximum of 1 BNB");
        
        //if contribution+balance is >= cap
        uint allowedContribution = 0;
        if((msg.value+contributions[msg.sender]) >= maxCap){
            allowedContribution = maxCap - contributions[msg.sender];
        }else{
            allowedContribution = msg.value;
        }
        
        //sanity ??
        require(allowedContribution > 0);
        
        //track total wallets
        if(contributions[msg.sender] == 0) {
            walletCounter++;
        }
        
        //Finally increment the contributor
        contributions[msg.sender] = contributions[msg.sender].add(allowedContribution);
        
        //all good ?  give tokens
        _mint(msg.sender, convertWeiToCZXP(allowedContribution));
    }
    
    /**
     *  One time event to give token allocations to our advisors ONCE when TGE is activated
     */
     
    function mintAdvisorTokens() internal checkTGE {
        
        
        //100K to each advisor, update to maxed out
        for(uint8 i=0; i < advisors.length; i++){
            contributions[advisors[i]] = maxCap;
            _mint(advisors[i], 20000000);
        }
    }
    
    /**
     *  Turn on TGE and then lock it forever when turned off
     */
     
    function flipTGE() public onlyOwner returns(bool) {
        require(!TGEcomplete);
        
        if(!isTGE){
            isTGE = true;
            mintAdvisorTokens();
        }else{
            isTGE = false;
            TGEcomplete = true;
        }
        return true;
    }
    
   
   /**
    * Our base conversion rate for the TGE
    */
    function convertWeiToCZXP(uint weiToConvert) pure internal returns (uint) {
        // 1 czxp = 100000000000 wei;
        return weiToConvert/100000000000;
    }
    
    /**
     *  Called in from our ERC721 contract actions
     *
     */
     function awardCzxp(address _to, uint256 _amount) public onlyAuthorizedContract {
         require(_to != address(0));
         require(_amount > 0);
         
         _mint(_to, _amount);
     }
     
    /**
     *  Called in from our ERC721 contract actions
     *
     */
     function burnCzxp(address _wallet, uint256 _amount) public onlyAuthorizedContract {
         require(_wallet != address(0));
         require(_amount > 0);
         
         _burn(_wallet, _amount);
     }
    
    /**
    * @dev Returns the amount contributed so far by a sepecific user.
    * @param _beneficiary Address of contributor
    * @return User contribution so far
    */
    function getUserContribution(address _beneficiary) public view returns (uint256) {
        return contributions[_beneficiary];
    }
    
       
   /**
    * Withdraw balance to wallet
    */
   function withdraw() public onlyOwner returns(bool) {
      msg.sender.transfer(address(this).balance);
      return true;
   }

}

Contract ABI

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Swarm Source

bzzr://358f3142aa560d3db150e67ff84df17c8586ae2c53fc630771ef3381c25879c6
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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