Contract 0xdad49e63f97c967955975490a432de3796c699e6 4

 
 
Txn Hash
Block
From
To
Value [Txn Fee]
0xbdbc5a99ee73451218b3c700fda53e2011cf0ce0dd55ad9964f2a811d67d347497503882021-08-04 20:30:061 min ago0x38a15ff0df5f7ce3bf498f02c7e908417201acab IN  Mobox: Farm0 BNB0.00148721
0x474808431663d4e5946d7a4dd337badbb6e6736de1252a3d3023cef1e6e9d06297503602021-08-04 20:28:423 mins ago0x229958fe669bcf4dd7ae3b2ee4b41a8c55037136 IN  Mobox: Farm0 BNB0.00096337
0xf163516c3d865f038d42d2629f05f0953c1b4a212457dc7c39337eef652eaa6597503392021-08-04 20:27:394 mins ago0x2f34f63edd8c4b3aba6edca5753e2fa7197d6b70 IN  Mobox: Farm0 BNB0.001684495
0x103e2001ee68c38ea43ed20cbcf3c4ea546bb520ed70a9355af51ee5a36386c197503272021-08-04 20:27:034 mins ago0x73fc28902d7e8fb3ee1b9b646aaa82e2687edf69 IN  Mobox: Farm0.044925 BNB0.00220225
0x9e593cb4e58c59b741e3408d703a769bbe5d78753cf193e623df70eb6e1e1d1c97503052021-08-04 20:25:576 mins ago0xffef5c31cb11a427866a201036708f180af8b329 IN  Mobox: Farm0 BNB0.001595035
0x40798b8df29bf887a6dec89a3e15497354a829abfa60fbc0e48f499a4974c2fe97502892021-08-04 20:25:096 mins ago0x73fc28902d7e8fb3ee1b9b646aaa82e2687edf69 IN  Mobox: Farm0 BNB0.00297442
0x67676fd0d184c43d0fe26bb0583fff364a983be767236d03a49e8bf356ba4fd697502692021-08-04 20:24:097 mins ago0xf201f38b3ccc143f02d58ef5ee091d136d69ffba IN  Mobox: Farm0 BNB0.001595035
0x62ce6da535c9e85088a2b5ed68f3a5c84c581868626ea2429908909fc676caec97502302021-08-04 20:22:129 mins ago0x502ee9680905b5cca311f4999b89ff43b5e9c3fa IN  Mobox: Farm0 BNB0.001609545
0x3d79b59cfd69c6232eee4312501d27aadaab97cf65b6e63e40317c40899b3cb297501892021-08-04 20:20:0911 mins ago0x7288d8ffc1749d88fe45ffd1963937ab3d558b5a IN  Mobox: Farm0 BNB0.001265605
0x96fba6cfe35ccb15c04c8a63a611f1c37d5dd2340fe5b5c10efb85b1d372c55697501882021-08-04 20:20:0611 mins ago0x0fb031fe84fc1d3dbef66f66ff70ebcb620a53b9 IN  Mobox: Farm0 BNB0.001595035
0x407ad40a7f7f0324841d061d8592521d038de46cb95172a505756efafb98dccf97500702021-08-04 20:14:0817 mins ago0x8c03160098013a9992dc147cfcb6adea9e392562 IN  Mobox: Farm0 BNB0.000222955
0x412e1aefa0e99e4014f156c16cb17cfa657911509be4ab91450c085c9c7d7cda97500532021-08-04 20:13:1318 mins ago0x1aa102504f1053b77ab17067720b8f1195d09adf IN  Mobox: Farm0 BNB0.00256735
0x09a68db240dabddfc5631f5820be3f8701b16b374e76391eadc5267d5052b73197500172021-08-04 20:11:1120 mins ago0xf08a1a3478e80a7633911b4ff0f69da9ec20c83d IN  Mobox: Farm0.0888 BNB0.00120895
0x3e9bc77e930ba7228e3c9ba8d9e8851cb2555bf4391b3035ddb44e772a2879fe97499692021-08-04 20:08:4323 mins ago0xd2463b34f2f5513504f0195055663e8979a059ec IN  Mobox: Farm0 BNB0.00044591
0xa51c6c97920a77955357f436cf8f6dfbdb720fd0b79e63a1dc83eb9e649ab0b197499622021-08-04 20:08:2223 mins ago0xc02a4602e40a844bfaf8920de908e8119959ba75 IN  Mobox: Farm0 BNB0.001595035
0x54c65ee200b872dcccb0e05bc54472fb8ab88ea48407564b5430419b3b0bba0e97499562021-08-04 20:08:0423 mins ago0x8b6e495ed814ceba898fa68f99a291b907533a91 IN  Mobox: Farm0 BNB0.00056539
0x69fddd38dd183dbd4cc034663450746c9a8f181370557fded56922b50ac4bd5997499492021-08-04 20:07:4324 mins ago0x2d6834a98e1a3080035997fe62ccac6ec7ff3468 IN  Mobox: Farm0 BNB0.000587575
0x3cce6a0a4c91b7a9373bf911a070eace75901af39ccbf8c7ee5a84506e121cb997499282021-08-04 20:06:4025 mins ago0x8c03160098013a9992dc147cfcb6adea9e392562 IN  Mobox: Farm0 BNB0.001609605
0xb551dea8839a48c903e392ad08e753206460f0cc647a973d7707adea6205ad2197498412021-08-04 20:02:1929 mins ago0xd2463b34f2f5513504f0195055663e8979a059ec IN  Mobox: Farm0 BNB0.00325338
0x94b9d0129d43640eafa09dbdd00f8ccc29b47ebce2d796b0fd2ff3ccd429b5a697498232021-08-04 20:01:2530 mins ago0x0b21dc2821f6162d15d4f0015c4fef0bc2824cc1 IN  Mobox: Farm0 BNB0.00044594
0x91be718c39b043970019591df117837bd8880882401702895d4c568e6fe5e2d797498232021-08-04 20:01:2530 mins ago0xcf6adcc5930237c811ca6911c9b14a35e5276a3c IN  Mobox: Farm0 BNB0.000809505
0x9481c9a536158d0af5a4c640c935635385972b4d89280853def34e2afc92234497498162021-08-04 20:01:0430 mins ago0xc5b6b9884b455b88b20e4c00a0fc7c670c41dc90 IN  Mobox: Farm0 BNB0.000840665
0x59dabd1f872b016019eb7458e915902e69866ecf6d86cab8c15d194224e5da2797497302021-08-04 19:56:4635 mins ago0x428813c567253dfe10a0307ad0be92a46aadada7 IN  Mobox: Farm0 BNB0.000587575
0x94f81065f06e7f036ad5021245cf5e64a1649091e23f6dcb36eb88816c987e3597497192021-08-04 19:56:1335 mins ago0x029b317b115dc4a40cb4774069e69c40705e0e2a IN  Mobox: Farm0 BNB0.00238805
0x3f29b8bd8f1a212102d4403b10dd6238f2bcb0dda63cadb961f0487bebb4185597497072021-08-04 19:55:3736 mins ago0xcc64ea842fcde4283cf239259f7462ef809c44fd IN  Mobox: Farm0 BNB0.000677255
[ Download CSV Export 
Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x103e2001ee68c38ea43ed20cbcf3c4ea546bb520ed70a9355af51ee5a36386c197503272021-08-04 20:27:034 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.044925 BNB
0x09a68db240dabddfc5631f5820be3f8701b16b374e76391eadc5267d5052b73197500172021-08-04 20:11:1120 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.0888 BNB
0xa3824c6e36d26855e142e512abcf33b988335c7f01ddfcf6a4f025f2f718423f97478152021-08-04 18:20:062 hrs 11 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.0285 BNB
0x73c2de424f53c371c1462f429b4210e1a436241f7e2bc6eaba2783ac8c60bbab97462492021-08-04 16:59:213 hrs 32 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.0112 BNB
0xe158b946db588a9d47c7aa8279d55768ef6579f9419c5e4eb3cab83aa5a1f9dc97459322021-08-04 16:43:213 hrs 48 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.0125 BNB
0x6d9962aa72f8f8a15d569155808d402ab1ddbb5a1ff711e68ebb444cd650da7a97457822021-08-04 16:35:163 hrs 56 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.003575 BNB
0xd633131ae23612b68f45a6f717ef7a220cb3b6ca4732bfa531232f26f6211c1497447642021-08-04 15:43:174 hrs 48 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.0243 BNB
0x0cf931175bd58f1d18eb2b5223e75162513a91fb9e7e2ddaf1e1410112f5f03397441442021-08-04 15:11:105 hrs 20 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.2 BNB
0xbfe224e9c6d40a51f454395624b67ac661e02ea0daf101f1dd20ab7d9ffcc07e97440202021-08-04 15:04:535 hrs 27 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1174.0631 BNB
0x1f966e05ca03b19249d4fd68c76b2daec092a0926b17fa7c8b0039175a84c43c97424252021-08-04 13:39:276 hrs 52 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.141525 BNB
0x581db74fc59e58909febac1758d8198c921fa6927c18653d6496b9c1011e2c3e97422672021-08-04 13:31:337 hrs ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.23 BNB
0x363a4a03ce78b8b8e0935a6d5151f28b530459d2f99641dd27d10b1ef4683fe097417122021-08-04 13:03:477 hrs 28 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1173 BNB
0x42bee04392cf92b50e829136af4be75fd96ccff62dfd730b138aed6994059dd397414842021-08-04 12:52:087 hrs 39 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.007 BNB
0xd7ac0eb8f2f8347f7a5951b39ecd78d634f1f72f19341595b5525b7392922bf397414752021-08-04 12:51:387 hrs 40 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.007 BNB
0x031f1d073d988e82aad320097bd100ec8e8119deeca693989ea7c083779bc53f97410252021-08-04 12:27:318 hrs 4 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1171.039 BNB
0x0e1b020adaea2be408fc674a829d1aa96656bb5a8eef1dd3c5ef530624a60b7097407982021-08-04 12:16:108 hrs 15 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1176 BNB
0x019549713c09b9171c61643dc3e18409022656785f869e21226baf74a3e5377e97386422021-08-04 10:25:2610 hrs 6 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1171 BNB
0x833192bb3d55c5ab9f55d7fce8938c6127bb887a32fb7a5936659def16d1fa6a97375192021-08-04 9:27:5611 hrs 4 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1172.2 BNB
0xbb57ac5c524a265c7299ea26a4e10c648c8fd81337e0d5c3129692a4c4afb2c897366052021-08-04 8:40:3611 hrs 51 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1171 BNB
0xcd6b94a4dd10673a799f4ece231c8e54f09c6f3524f75cce596631c19835f45297356692021-08-04 7:47:0712 hrs 44 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1171 BNB
0x2bd873578b7d44408434757335a87c1659d6663b28e778373f483f40828ce31097356462021-08-04 7:45:4512 hrs 46 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1171 BNB
0x72218ba122cbcb1cd492b86d394c9933b73c77a03794e9f04f7691b6dcbf666a97356392021-08-04 7:45:2312 hrs 46 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1171 BNB
0xb30d5630f247d801f5767429dee768322046b24a3fe7da7d3505b814ba9f401b97351062021-08-04 7:14:4713 hrs 17 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.5877 BNB
0x804cee984216a0ee14e7c12157688b434a0a500fafb7fa11d86d7236d271bc0397328002021-08-04 5:15:5115 hrs 16 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.01325 BNB
0xf5620582f8cf53f8c7dcb3ada625c7b38f1600c370b9ea9ee76800e4400392a697325402021-08-04 5:02:3515 hrs 29 mins ago Mobox: Farm 0x592e9ef115096f0121202b2a5e30cd5aa228d1170.086175 BNB
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xf8c1ba88f1e4aed152f945f1df2a8fdc36127b5f

Contract Name:
MoMoProxy

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at BscScan.com on 2021-04-03
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.6;

/*
 * @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.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

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

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
}

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) {
        require(b <= a, "SafeMath: subtraction overflow");
        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-solidity/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) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, "SafeMath: division by zero");
        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) {
        require(b != 0, "SafeMath: modulo by zero");
        return a % b;
    }
}

library SafeMathExt {
    function add128(uint128 a, uint128 b) internal pure returns (uint128) {
        uint128 c = a + b;
        require(c >= a, "uint128: addition overflow");

        return c;
    }

    function sub128(uint128 a, uint128 b) internal pure returns (uint128) {
        require(b <= a, "uint128: subtraction overflow");
        uint128 c = a - b;

        return c;
    }

    function add64(uint64 a, uint64 b) internal pure returns (uint64) {
        uint64 c = a + b;
        require(c >= a, "uint64: addition overflow");

        return c;
    }

    function sub64(uint64 a, uint64 b) internal pure returns (uint64) {
        require(b <= a, "uint64: subtraction overflow");
        uint64 c = a - b;

        return c;
    }

    function safe128(uint256 a) internal pure returns(uint128) {
        require(a < 0x0100000000000000000000000000000000, "uint128: number overflow");
        return uint128(a);
    }

    function safe64(uint256 a) internal pure returns(uint64) {
        require(a < 0x010000000000000000, "uint64: number overflow");
        return uint64(a);
    }

    function safe32(uint256 a) internal pure returns(uint32) {
        require(a < 0x0100000000, "uint32: number overflow");
        return uint32(a);
    }

    function safe16(uint256 a) internal pure returns(uint16) {
        require(a < 0x010000, "uint32: number overflow");
        return uint16(a);
    }
}

library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow, so we distribute
        return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
    }
}


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

    /**
     * @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(_msgSender() == _owner, "not owner");
        _;
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public {
        require(newOwner != address(0), "newOwner invalid");
        if (_owner != address(0)) {
            require(_msgSender() == _owner, "not owner");
        }
        
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 * From https://github.com/OpenZeppelin/openzeppelin-contracts
 */
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);
}

contract ERC20 is IERC20, Context {
    using SafeMath for uint256;

    mapping (address => uint256) internal _balances;
    mapping (address => mapping (address => uint256)) internal _allowances;

    uint256 internal _totalSupply;

    /**
     * @dev Returns the name of the token.
     */
    string public name;

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    string public 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 {_setupDecimals} is
     * called.
     *
     * 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}.
     */
    uint8  public decimals;

    /**
     * @dev Sets the values for {_name} and {_symbol}, {_decimals}
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory _name, string memory _symbol, uint8 _decimals) public {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;
    }

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

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

    /**
     * @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) external override returns (bool) {
        _transfer(_msgSender(), _to, _amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address _owner, address _spender) external view override returns (uint256) {
        return _allowances[_owner][_spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `_spender` cannot be the zero address.
     */
    function approve(address _spender, uint256 _amount) external override 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:
     *
     * - `_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) external override returns (bool) {
        require(_from != address(0) && _to != address(0));

        _approve(_from, _msgSender(), _allowances[_from][_msgSender()].sub(_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 _addVal) external returns (bool) {
        require(_spender != address(0), "approve to 0");

        _approve(_msgSender(), _spender, _allowances[_msgSender()][_spender].add(_addVal));
        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 _subVal) external returns (bool) {
        require(_spender != address(0), "approve to 0");

        _approve(_msgSender(), _spender, _allowances[_msgSender()][_spender].sub(_subVal));
        return true;
    }

    /**
     * @dev Moves tokens `_amount` from `_from` to `_to`.
     *
     * 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:
     *
     * - `_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 {
        require(_from != address(0), "transfer from 0");
        require(_to != address(0), "transfer to 0");

        _balances[_from] = _balances[_from].sub(_amount);
        _balances[_to] = _balances[_to].add(_amount);
        emit Transfer(_from, _to, _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 {
        require(_owner != address(0), "approve from 0");
        require(_spender != address(0), "approve to 0");

        _allowances[_owner][_spender] = _amount;
        emit Approval(_owner, _spender, _amount);
    }

    /** @dev Creates `_amount` tokens and assigns them to `_to`, 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 _to, uint256 _amount) internal {
        require(_to != address(0), "mint to 0");

        _totalSupply = _totalSupply.add(_amount);
        _balances[_to] = _balances[_to].add(_amount);
        emit Transfer(address(0), _to, _amount);
    }

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

        _balances[_from] = _balances[_from].sub(_amount);
        _totalSupply = _totalSupply.sub(_amount);
        emit Transfer(_from, address(0), _amount);
    }
}

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance");
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value);
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves.

        // A Solidity high level call has three parts:
        //  1. The target address is checked to verify it contains contract code
        //  2. The call itself is made, and success asserted
        //  3. The return value is decoded, which in turn checks the size of the returned data.
        // solhint-disable-next-line max-line-length
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "SafeERC20: low-level call failed");

        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}


interface IMoboxToken {
    function transfer(address recipient, uint256 amount) external returns (bool);
    function burn(uint256 amount_) external;
}

contract MoboxEventPool is Ownable {
    using SafeMath for uint256;

    event EventApply(
        address applyer,
        address applyTo,
        uint256 amount,
        uint256 eventAmount,
        uint256 devTeamAmount,
        bytes reason
    ); 

    event EventPoolBurn(
        address bunner,
        uint256 amount,
        bytes reason
    );

    uint256 public constant devTeamRate = 2000;
    address public moboxToken;
    address public finance;
    address public devTeam;
    string public poolName;     // Event/Partner

    constructor() public {

    }

    function init(string memory name_, address mobox_, address finance_) external onlyOwner {
        require(mobox_ != address(0) && finance_ != address(0), "invalid param");
        poolName = name_;
        finance = finance_;
        moboxToken = mobox_;
    }

    modifier onlyFinance() {
        require(msg.sender == finance, "not finance");
        _;
    }

    function setDevTeam(address addr_) external onlyOwner {
        devTeam = addr_;
    }

    function setFinance(address addr_) external onlyFinance {
        require(addr_ != address(0), "invalid addr");
        finance = addr_;
    }

    function applyFor(address to_, uint256 amount_, bytes memory reason_) external onlyFinance {
        require(to_ != address(0) && devTeam != address(0) && reason_.length <= 256, "invalid param");
        uint256 devTeamAmount = amount_.mul(devTeamRate).div(10000);
        uint256 eventAmount = amount_.sub(devTeamAmount);

        IMoboxToken mbox = IMoboxToken(moboxToken);
        mbox.transfer(to_, eventAmount);
        mbox.transfer(devTeam, devTeamAmount);

        emit EventApply(msg.sender, to_, amount_, eventAmount, devTeamAmount, reason_);
    }

    function burn(uint256 amount_, bytes memory reason_) external onlyFinance {
        require(reason_.length <= 256, "invalid param");

        IMoboxToken(moboxToken).burn(amount_);

        emit EventPoolBurn(msg.sender, amount_, reason_);
    }
}

abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal virtual view returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () payable external {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () payable external {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     * 
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}

contract UpgradeableProxy is Proxy {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     * 
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) public payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            // solhint-disable-next-line avoid-low-level-calls
            (bool success,) = _logic.delegatecall(_data);
            require(success);
        }
    }

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal override view returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     * 
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");

        bytes32 slot = _IMPLEMENTATION_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }

    function isContract(address account) internal view returns (bool) {
        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }
}

contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address _logic, address _admin, bytes memory _data) public payable UpgradeableProxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(_admin);
    }

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @dev Returns the current admin.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address) {
        return _admin();
    }

    /**
     * @dev Returns the current implementation.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address) {
        return _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     * 
     * Emits an {AdminChanged} event.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external ifAdmin {
        require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeTo(newImplementation);
        // solhint-disable-next-line avoid-low-level-calls
        (bool success,) = newImplementation.delegatecall(data);
        require(success);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal override virtual {
        require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}


contract MoMoProxy is TransparentUpgradeableProxy {
    constructor(address _implementation, address _admin, bytes memory _data) public TransparentUpgradeableProxy(_implementation, _admin, _data) {
    }
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_implementation","type":"address"},{"internalType":"address","name":"_admin","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://6ef962deab61b5bee6282f050c6fcfb0aa2274147a1ba78047c3bdbe1ee87207
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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