Contract 0xC808592e5b4585F982bc728d63b227634bc007a4

 
Txn Hash
Block
From
To
Value [Txn Fee]
0x1319c05d441634217879be046835dcc7f83c37bcd563c7c9b27a072861088cad71938472021-05-06 19:28:573 hrs 3 mins ago0x16dc08690923678034916fdf5e5b2f675b68c3d2 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x6b4d8a14d9592545c94d75588f940b25b18964aa01fb74b4dbc8b74dcfd72f1371914052021-05-06 17:24:495 hrs 7 mins ago0x5131733a0b34d9598f23b38be67379e08d290078 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x129d280ea86186c9197402880a78cf3a4fb4953c8502b7980d5c0bd4fdf3407471908532021-05-06 16:57:135 hrs 35 mins ago0xf59da3188b391f3368f77315e43447e5d60250da IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xfb07d3f64d977bc51f6e4a60f7eaf3f19f45066c9b51310f2b6b4a3fdca6d16271889092021-05-06 15:17:167 hrs 15 mins ago0x5befd7aeac669eb5c169ae30677ba06a45b2d0f2 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x1ffce8d3608219a04aa1e3f24cf68cada5fe33612e984188f8ffc9181be622fc71887282021-05-06 15:07:357 hrs 24 mins ago0x1d9ba790df485df543f11530eadf2b1ad69eb6af IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x96a1491e3f7abf7e2de2b0591588217b7cfec26a1073e2579859e8e175899ad871873722021-05-06 13:46:218 hrs 46 mins ago0x9c4aed0377e4c8cc352624c37d8ba298ce211af5 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x96534caf9689d463cb5ab21b05c634979cb3e7b7676ef57e2b411deb558868d371864662021-05-06 12:48:559 hrs 43 mins ago0xf1d104ca65011747b8fca2d5bc8f8f63e4e05099 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x11aa7333afb807a9370577af801cee146bf72c755d7016dbbb249d2cf190b66d71860302021-05-06 12:27:0610 hrs 5 mins ago0x9e8ac7b9c44fb94f631aab30d39844c4b4897139 IN  CryptoFrog.Finance: FROG Token0 BNB0.000105
0x19026b276446145743e1083947124cc5d3b02318586310f73146e2a4938062b271854032021-05-06 11:54:1710 hrs 38 mins ago0x27b9797aa6f0273b8f9e91ce3f45f454b5aa4f67 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x798aefeed155418e36b05803fe948bba484a4aacd0c106bc09ede565b0cc623e71792312021-05-06 6:43:1315 hrs 49 mins ago0xa107ccdb646f4e32bfb23e25203905a399f8b8ac IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xa4358e9e9b321f374565beded07fe173329de6caef140a73fe40bd571a90fa4e71758312021-05-06 3:52:3318 hrs 39 mins ago0x6b6382e41bf559e0461774aa658ce2f436d012bb IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xa5a902bcabee8f7f4c2c30430ce137f83e5291e50a0e0ca869eeb64244b5943c71741922021-05-06 2:30:2520 hrs 2 mins ago0xc018a546deb1fe3c1a5183669606d933fac1c25c IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xbd1f9b78fa5d4510815342a9512a1c379cf695517dea842b33debb037fb812c771685612021-05-05 21:42:031 day 50 mins ago0xf1d104ca65011747b8fca2d5bc8f8f63e4e05099 IN  CryptoFrog.Finance: FROG Token0 BNB0.000139015
0xd6169943ff031611ad99a54d9b17be27f6a846b0dc233a1838b5938e9c1f48ee71665992021-05-05 20:03:391 day 2 hrs ago0xef48969ac1a3a7c41a2d8cf23c48e5c90a14dee8 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x7e4064b84f113f5ee9029ace1e1f989dc47b7b2d8ef9df72ba2327337ce9d34171658652021-05-05 19:23:181 day 3 hrs ago0xab7c03543b992a951b538ecd929623a0c1f3558c IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x58d1cf61cad24f2bab632e1a3cf038cf6173bb27ff48ecb12b94bf3b86a2871c71572002021-05-05 11:50:201 day 10 hrs ago0xfc0d6c35ca284a6b62b6d78df81d45dbed1ffdd7 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x3365d54bc3cec8f0ff895342931ef8858cc2a7dd83a1c8fd70975982e862cc4c71546122021-05-05 9:40:531 day 12 hrs ago0xd86b7c11426238545f79e9386897546fbe863178 IN  CryptoFrog.Finance: FROG Token0 BNB0.000181015
0x6bd87d7c9c13a5af2a51243b1240679d117cbab19b84c338b6f041fb81414a7671514152021-05-05 7:00:141 day 15 hrs ago0xbde3a03dd5492b69db65036d673b6d0b61d4a25f IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x655f4fe52c6822b6a841c9a3394f1ad4c705f77b370b16622e0e3b7c2c26313571490942021-05-05 5:04:101 day 17 hrs ago0x15412704438c9797b0e48a817f13561d1ea9f07b IN  CryptoFrog.Finance: FROG Token0 BNB0.00022113
0xd418af8ab760f920a1193d3d2e26926705dd1bb5413a545775203b288d48b71471488132021-05-05 4:50:071 day 17 hrs ago0xab50d7f55d632f5a8ef0b727d78fb6971cdc740e IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x80f1db2f7fe5827b0f9bc98063fe674d1650c56fc2cb1882a97e09957ed91cb271433602021-05-05 0:11:301 day 22 hrs ago0x22a58b36019c7f5aacc1eae05e069dd4545bf19c IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xbb6ebf13958139cdbb074c598a6f7af314e2f6d75d893185b3dfc56d8b4d6da971415262021-05-04 22:37:491 day 23 hrs ago0x72df159e817e1c2d928f26edc7e78e139adcfba0 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xa4e967723835f9e6f7ed775e889e03af9a960ea85a541f32ce0a8bd4e016b9f271342042021-05-04 16:30:232 days 6 hrs ago0xf136a11bce34451fcbdc667d9f4a48fac18a5844 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x3ced6f02c695f368f8f3ea7b72b3139776ba15211f7f56fcc9847f22270007da71234962021-05-04 7:32:192 days 15 hrs ago0xbf5310fae4d7a0c6df0452bcda09aefa2748ad59 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x952f6ffe470d282c0aaf502aecccf55b9b183c0689878430ba5f18982816398571218862021-05-04 6:11:492 days 16 hrs ago0x25da553f80034c05fff3bc472a63cda61593bdcb IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
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OVERVIEW

CryptoFrog.Finance is a collectible frog NFT and a yield farming project.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x4b2bc1deabf0e4258013c0175ca90480841e16a2f93aa5cfae657bffc5901e5054695382021-03-07 10:29:5160 days 12 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0xbc910594629e866a44a435fe6f47f29358b955cfd1763588a3137d52dacb2ac154671142021-03-07 8:28:3960 days 14 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0x5746d45e0181b0d669bda39dfdf377e7f1a4ee1b496b1a877b7840735be5c89754665162021-03-07 7:58:4560 days 14 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0x136f252e09f4f62afccc96052683f1f744f7dac2ced5622415e138a3da4f841954659102021-03-07 7:28:2760 days 15 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0x136f252e09f4f62afccc96052683f1f744f7dac2ced5622415e138a3da4f841954659102021-03-07 7:28:2760 days 15 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0xad6b00e3a5d18be1e30d3a623ea67f577f446ea956a0db98d73e93e3d8b2779b54655662021-03-07 7:11:1560 days 15 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0xad6b00e3a5d18be1e30d3a623ea67f577f446ea956a0db98d73e93e3d8b2779b54655662021-03-07 7:11:1560 days 15 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0xf62a15bdd97c193ac9206e41ece8a137bb5d687760aaf432ad2ab0831cac72b954652042021-03-07 6:53:0960 days 15 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0xf62a15bdd97c193ac9206e41ece8a137bb5d687760aaf432ad2ab0831cac72b954652042021-03-07 6:53:0960 days 15 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:0060 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:1860 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:1860 days 15 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:1860 days 15 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:1860 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:1860 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:1860 days 15 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x2c5338c3a0377923bcb7231b473eb542efc157b40cdc88c1df173c879009d7da54590972021-03-07 1:47:3860 days 20 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0x2c5338c3a0377923bcb7231b473eb542efc157b40cdc88c1df173c879009d7da54590972021-03-07 1:47:3860 days 20 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
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Contract Source Code Verified (Exact Match)

Contract Name:
FrogToken

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 2020-10-25
*/

pragma solidity ^0.6.12;
/*
 * @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 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 `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);
}

/**
 * @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.
     */
    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.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        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.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}


/**
 * @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");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

/**
 * @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 IERC20;` 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));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    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, "SafeERC20: decreased allowance below zero");
        _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. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "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");
        }
    }
}



/**
 * @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.
 */
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(_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 {
        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 virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}


/**
 * @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 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;
    using Address for address;

    mapping (address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * 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) public {
        _name = name;
        _symbol = symbol;
        _decimals = 18;
    }

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

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view 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 {_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}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view override 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 virtual override returns (bool) {
        _transfer(_msgSender(), recipient, 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}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual 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:
     * - `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 virtual override 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 virtual 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 virtual 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 virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _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 virtual {
        require(account != address(0), "ERC20: mint to the zero address");

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

        _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 virtual {
        require(account != address(0), "ERC20: burn from the zero address");

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

        _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 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 Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    /**
     * @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 to 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 { }
}

// FrogToken with Governance.
contract FrogToken is ERC20("CryptoFrog.Finance", "FROG"), Ownable {
    /// @notice Creates `_amount` token to `_to`. Must only be called by the FrogPool.
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
    }
}

Contract ABI

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://a512198909ba1a3f50b736278f5714e097d292008e7788a86c7c223b909168ca
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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