Contract 0xC808592e5b4585F982bc728d63b227634bc007a4

 
Txn Hash
Block
From
To
Value [Txn Fee]
0x2440f62a762fd3065b159820866a94d008b7af1d36a71f2eefabeb69b3d7020c85559572021-06-23 19:53:587 hrs 35 mins ago0x873da56902a9120e91b0f2a8c73ae5c06aa97b63 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x6c98fb9d68d4572b5b685b7dcaa4632576a3cc4f2c09c5cfa87b3bcb52b2c20285530542021-06-23 17:28:0010 hrs 1 min ago0x6306ed0557d6497b7a582017f779d8de1babd6d8 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x04062974a042ad026dea1d0bf486221842680b316a154bae9929efbf28a1f1d785514452021-06-23 16:07:2511 hrs 21 mins ago0x341ff65464d21449732d6a0011de21918401e572 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xb2b84d2b8a97a267d44170fbfdfe0b7f04ec72231c59bbba98ca36ded361732f85337142021-06-23 1:17:341 day 2 hrs ago0x350689dbfdc024d4489f85b8fe9675ef776d9c5a IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x47e4e400bf8b75cb0ebabdff56977179372c3d23a3ef3935dd1c592b4a9628ba85333922021-06-23 1:01:201 day 2 hrs ago0xbc5e05eb8612ecb8c421257b4142bf02099de6fe IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x922a382b3209f9bdf4b6f63781c292fd3171eaab08009815add58f3198d81cdb85239762021-06-22 17:06:201 day 10 hrs ago0x3af40b5eb072c71eeb5cc4915ac843b57662d400 IN  CryptoFrog.Finance: FROG Token0 BNB0.000105835
0xc3987974b05bc75f0762baf73300303eac63c66ad15a2825753d6bd20a9395fe85189392021-06-22 12:52:311 day 14 hrs ago0xd786791a4c399265f500bc7e0b60bad16b70884d IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xe1d76ee896e42f6906114df164c35dcc7ebe588a4d0f78dd8dd04257cbad846585177862021-06-22 11:53:141 day 15 hrs ago0x6c49bea2daee5ece1fc5d5c98f4aa4f240931959 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x6f0cc7edbf304ee2273a626aa47b92ba4a403e6486f237afb04c6e5b33d390bc85177652021-06-22 11:52:111 day 15 hrs ago0x17f763db0756edb66a63295ef928a537ba5fe0a5 IN  CryptoFrog.Finance: FROG Token0 BNB0.000139015
0x5f4d528ec7595c2ef80553690cf621fa3ec3392e69dce729cd84d7e92b75b38985128402021-06-22 7:44:571 day 19 hrs ago0x935d4f8127b67181e42ce6a098062f14faaef525 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x346c3d48e5c001be3fe9da4f4b25c3158fba253d41ea8c88b88e8ffb53d6b13384982922021-06-21 19:33:222 days 7 hrs ago0x1cd6094cf108cd1bc5b03a8e43f40c7ce90c1159 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xff50f90ff0190a0e39daa5061f5cace1bf8f72f168c3cd361a9077f7b0931d1084978312021-06-21 19:10:142 days 8 hrs ago0x6943b9bf0cf42960dca95f5e9d3812a3e05117fb IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x06acc36c184624ef711a68e13f0a7e58e71f055d16cfee40d5f62d4a57d165d384907982021-06-21 13:17:222 days 14 hrs ago0x1ed7a17e0341729e118455cd64b5d02c5fae0fa7 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x00910ae2e26dd29dba7e0431829c20ca0a163aecad17d87b8864b2d10ed9fc5784846192021-06-21 8:07:362 days 19 hrs ago0x40ff5601a4d3af893192138696364a74bff693e7 IN  CryptoFrog.Finance: FROG Token0 BNB0.00044406
0x67b94bdbaf722d3c5103e397c152d91b651d84f5f987d6071e1fb3509a2fed1484756002021-06-21 0:36:053 days 2 hrs ago0xd618f642b2d1e5f5cdd164aaee9158e4228acc9a IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x06b6229b8cad7ad4c9311a8d81358672bd356844c4484495d684565bf12afe5784677652021-06-20 18:04:203 days 9 hrs ago0xd435d2d402f3d26bda13e06699d43165ac5b9f09 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x53751f6f905c84a6e1b3820f00aaa8922bc1fdfed17bc0f8ba450fcd690e25cb84676342021-06-20 17:57:473 days 9 hrs ago0x8d1c83e2f9214a7fd7710649ca6c7831753a6125 IN  CryptoFrog.Finance: FROG Token0 BNB0.000101577
0x06763357ac15335c73856165bfc8e2bc9c97f2cb6103e1c9f846d3f4c7d3554184626662021-06-20 13:49:233 days 13 hrs ago0xe6ae94f13e4a5dfd73eaf980c5d13a896cf02f14 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x1ab8f487c4c3dcf09512a9c87ff3c2b8e8f3082d4ab3d313dad1cc7e0a20d5d684584282021-06-20 10:17:283 days 17 hrs ago0x2efe7f87f4f80af5a2c495e7fef8dbc9869fdf6a IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xf9105b2cfc5607c4d51348fb38429330bc0370009dd6c605cb6a05f58b45f2ca84563852021-06-20 8:34:203 days 18 hrs ago0x9a6e9f236c08bf5ada5a07287a05fda5be690300 IN  CryptoFrog.Finance: FROG Token0 BNB0.000180955
0xf7d2be1a57ae6399b0b8e1231e458d96144f92540fe190fedfcd492468fbe4d184563842021-06-20 8:34:173 days 18 hrs ago0x5ea4c63e5b1fa1a925cb7429b0dfe6d7fa17be43 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x2f9ac575393d08a711610c7bd84c8264fa288321d04f4fd3efade5b334539fcb84538782021-06-20 6:28:593 days 21 hrs ago0xc54f701b2a674586cfbd6b71e0d8cd962b4a2908 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xedeac64f9237e33de8bec818a3af9622e79d5966c38f6c699584aeb32a7a072a84511702021-06-20 4:13:163 days 23 hrs ago0x39f221d5394fa73e849927fde42922adbc3859ac IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0xc2f465e6703a51b9cee12772571fde6977fd044b8ad1b602f789412535e6f5fd84450682021-06-19 23:08:014 days 4 hrs ago0xc4911c17e9e85994843d8f56f4cf0a0fccc786d1 IN  CryptoFrog.Finance: FROG Token0 BNB0.00022203
0x02bc0f10423aec37647458d1a75391d6b42cbd82055ac828fabc362c313efac784429332021-06-19 21:21:164 days 6 hrs ago0x3948313d1edb5a1f3bbdfff06de6c2a8671bcc15 IN  CryptoFrog.Finance: FROG Token0 BNB0.0002389398
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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 10:29:51108 days 16 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0xbc910594629e866a44a435fe6f47f29358b955cfd1763588a3137d52dacb2ac154671142021-03-07 8:28:39108 days 19 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0x5746d45e0181b0d669bda39dfdf377e7f1a4ee1b496b1a877b7840735be5c89754665162021-03-07 7:58:45108 days 19 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0x136f252e09f4f62afccc96052683f1f744f7dac2ced5622415e138a3da4f841954659102021-03-07 7:28:27108 days 20 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0x136f252e09f4f62afccc96052683f1f744f7dac2ced5622415e138a3da4f841954659102021-03-07 7:28:27108 days 20 hrs ago 0x0c5362f7c80ff3124843df2510b9e7368e237ea6 CryptoFrog.Finance: FROG Token0 BNB
0xad6b00e3a5d18be1e30d3a623ea67f577f446ea956a0db98d73e93e3d8b2779b54655662021-03-07 7:11:15108 days 20 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0xad6b00e3a5d18be1e30d3a623ea67f577f446ea956a0db98d73e93e3d8b2779b54655662021-03-07 7:11:15108 days 20 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0xf62a15bdd97c193ac9206e41ece8a137bb5d687760aaf432ad2ab0831cac72b954652042021-03-07 6:53:09108 days 20 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0xf62a15bdd97c193ac9206e41ece8a137bb5d687760aaf432ad2ab0831cac72b954652042021-03-07 6:53:09108 days 20 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x36fc66ca88690f14e059c657d9611b8b63611b78c9e9355b5f9ca63c7e78aeed54651812021-03-07 6:52:00108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:18108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:18108 days 20 hrs ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:18108 days 20 hrs ago PancakeSwap: Router CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:18108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:18108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x9447d41436036aa699f8f03ac004be9352a06e825c0f7def59ae02b796dd387154651072021-03-07 6:48:18108 days 20 hrs ago 0x5f0dd7607a20771afeb4c2a433481d4be2e4dda1 CryptoFrog.Finance: FROG Token0 BNB
0x2c5338c3a0377923bcb7231b473eb542efc157b40cdc88c1df173c879009d7da54590972021-03-07 1:47:38109 days 1 hr ago PancakeSwap: FROG CryptoFrog.Finance: FROG Token0 BNB
0x2c5338c3a0377923bcb7231b473eb542efc157b40cdc88c1df173c879009d7da54590972021-03-07 1:47:38109 days 1 hr 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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