Contract 0xae1e69bbd3dc0c470ce4ba28794753cdfdec7452 1

 

Contract Overview

2k Finance: TWOK Token
Balance:
0 BNB

BNB Value:
$0.00

Token:
 
Txn Hash
Block
From
To
Value [Txn Fee]
0x798eda4a97720898548dd36f58c631843a35179dac5f461bc167bc474dcf161097481532021-08-04 18:37:003 hrs 51 mins ago0x9d7630d78e66c088070a63a238382e4efefce010 IN  2k Finance: TWOK Token0 BNB0.00023599
0xe30cf80f188a307871a0fe0282a2bb68413d3103125ec1767bd8c249f566dbe997349382021-08-04 7:06:1415 hrs 22 mins ago0xcf859acad1bf505412eef02ac5cef189898e4cdc IN  2k Finance: TWOK Token0 BNB0.00023443
0xc02ff1dd3e78bec0bae21338ebc0291da177dea43f83ac3e99ef81cf1d35eab297000082021-08-03 0:24:371 day 22 hrs ago0x447e521fee01cb83a55a8fd3d95285ce4407b411 IN  2k Finance: TWOK Token0 BNB0.00013861
0x12ef7d64f9b1a25d19883fdf1cf2032aa6a5e696654e7dfc172cd3209f2fdfe896999692021-08-03 0:22:251 day 22 hrs ago0x447e521fee01cb83a55a8fd3d95285ce4407b411 IN  2k Finance: TWOK Token0 BNB0.00023461
0xf32e5cb482572df6b14ea5d28e3bd48d876297be87c751bae18f4212777da4c496962572021-08-02 21:14:352 days 1 hr ago0x3ca81c1951794a935f2a7e19ed0cade486cd612a IN  2k Finance: TWOK Token0 BNB0.00015607
0x0cbeebc2ab63fb6f5030f349950a7cfa542aaa564860fe95629d9992414e9edd96920232021-08-02 17:39:112 days 4 hrs ago0xa2ab30cb2711767b93c02664bcb8a480f073fc4c IN  2k Finance: TWOK Token0 BNB0.00023599
0xaa04d22e15431a1da95dcd62a0f2fc07d99f03bdcd33eceac3aaf469024cf25296919972021-08-02 17:37:532 days 4 hrs ago0xe45469e664bc38757d2f52dc2da0c1491bc712dd IN  2k Finance: TWOK Token0 BNB0.00023599
0xdca705038e7847a6635ca25f75747836341e9898c16663b85b3062cbc60f5b5396919792021-08-02 17:36:572 days 4 hrs ago0x63ff3874e05709b93b1a0f5e4a7a66ab7c26d1b8 IN  2k Finance: TWOK Token0 BNB0.00023599
0xb8821cf28c263c7605725bcb9420cc52337995fb69fb44fc6601a6f1558a9f9b96723322021-08-02 0:38:182 days 21 hrs ago0xe6e2e3701e87dfebdbcad67cf34b2d552c606aea IN  2k Finance: TWOK Token0 BNB0.00023599
0x8207f4bf9fa2ea4da834c124ef6871ab814da9bfafdee164e1c882cb0b2bb8d696532492021-08-01 8:01:313 days 14 hrs ago0xab1133b3f70e9341f34c7b82bae2808b85b795ef IN  2k Finance: TWOK Token0 BNB0.000300225
0x3d6052a85245546217f36d27d1fa9b170a71efb162bf69e426301d6afa4fa2de96416322021-07-31 22:08:014 days 20 mins ago0x62f2ca540a5eec798c0a8ac48f7a3e2321c05cb9 IN  2k Finance: TWOK Token0 BNB0.000300225
0x38d55f1c32883c15bd0b5a74ce60d3a59f2355fd843f7259c1fea3ec39bf76fd96414242021-07-31 21:57:374 days 31 mins ago0x3ca81c1951794a935f2a7e19ed0cade486cd612a IN  2k Finance: TWOK Token0 BNB0.00023455
0x422c99be1f63d26b43242e774cc370b900f3af31746d15c1c97de69ee455bedb96407962021-07-31 21:26:104 days 1 hr ago0xfacaf11a184e8230a34b75b58f2130011abe0111 IN  2k Finance: TWOK Token0 BNB0.000375225
0xe2936aadad9721406f5c8def195f83dd8bc61a979fb9cb55ea391ad9c98d5f7b96388992021-07-31 19:48:344 days 2 hrs ago0xe996fa1bbf1c7ae977b6f5f89316e1ee0853e8bb IN  2k Finance: TWOK Token0 BNB0.00023599
0xcaccb3507ecbf9e57e25277c45a8d3afa53b54c6fbdf50efd65e2abca98986da96177212021-07-31 1:40:184 days 20 hrs ago0xfbe02dae4e6672e16138471bf0ac87c6c4a523f6 IN  2k Finance: TWOK Token0 BNB0.00023599
0xceb83d236e6ba4752091b3805b24f4289f97486b39c1baebd6e8caf6ba4e7ee996176982021-07-31 1:39:094 days 20 hrs ago0x5d36b03b27a4352e0d94fa428449bc9f7b1acf11 IN  2k Finance: TWOK Token0 BNB0.00023599
0x111254082bb9c4b9112ce2eeaca3002483d0cf02778d5439ca0f0aa4005ff38b96166002021-07-31 0:44:154 days 21 hrs ago0xeb32cc5c4a18ece94737fc89483f0b8c86879d48 IN  2k Finance: TWOK Token0 BNB0.00015961
0x618118d70518b029e63d9e7972ef46cfa68e7b3b1e43356a97252335b858bbb996121002021-07-30 20:58:465 days 1 hr ago0xa776064420398c31cdeb381448412be7ae1f89d2 IN  2k Finance: TWOK Token0 BNB0.00023599
0xfbde9b8e43efd49f28c1edffa577a9c908c2cc6cf1ab50639973cc264a034b9d96109612021-07-30 20:01:495 days 2 hrs ago0xe5fd9e1f07701aff3aff4fa36adfbbdd1b57b8ad IN  2k Finance: TWOK Token0 BNB0.00023599
0xf7f44b09e1bdda022345be6bdc25eddb3fd0246bd4abd70a16cc864f3556c9cb96109232021-07-30 19:59:555 days 2 hrs ago0x33bfc778ba06ca482f1adc4424594f356f63bf31 IN  2k Finance: TWOK Token0 BNB0.00023599
0x6322cb8c10cb7b5533e69c832c349d29532ee0129709ce56ed77499d2882477896108872021-07-30 19:58:075 days 2 hrs ago0xaac7350ae00f8438994f5417389e33d2bd8600fb IN  2k Finance: TWOK Token0 BNB0.00023599
0x690372f8ee6de01925c6039a63fb7fc5a45560e0caacfb6f93e74fe7dafe62be96108302021-07-30 19:55:165 days 2 hrs ago0xea07953b4c2bcee7d1753978a07269c4ba9f09cc IN  2k Finance: TWOK Token0 BNB0.00023599
0x315dc3cc320e741365ef47b0beacdb692c616a3fac6fc66fdde644dde30c261d96107612021-07-30 19:51:495 days 2 hrs ago0xcca7661c9ca993b4dbeeacc48073361a34dea5a6 IN  2k Finance: TWOK Token0 BNB0.00023599
0xdcc2141b5b19c1f999a8db68d4a0679ea45fa574a7b88de6295f876af605d70496106982021-07-30 19:48:405 days 2 hrs ago0x1be66cc40bb649fda7837ad54ec3cfa561e2486f IN  2k Finance: TWOK Token0 BNB0.00023599
0x6945f495954cb9a4fca7cd3fc7ff15c5e977a30f3f5fef50e8a349e87d2b4b1096106572021-07-30 19:46:375 days 2 hrs ago0xc5bb04e47a87190ff0018f12eb31e7eb147a7a18 IN  2k Finance: TWOK Token0 BNB0.00023599
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OVERVIEW

2k Finance offers yield farming DeFi platform built on the Binance Smart Chain.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xdf7bd9ddd8bc96d4852f8863c23002136afa39cef9d2f4bd326f3aea7352f8d754702962021-03-07 11:07:45150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0xdf7bd9ddd8bc96d4852f8863c23002136afa39cef9d2f4bd326f3aea7352f8d754702962021-03-07 11:07:45150 days 11 hrs ago PancakeSwap: TWOK 2k Finance: TWOK Token0 BNB
0xdf7bd9ddd8bc96d4852f8863c23002136afa39cef9d2f4bd326f3aea7352f8d754702962021-03-07 11:07:45150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0xdf7bd9ddd8bc96d4852f8863c23002136afa39cef9d2f4bd326f3aea7352f8d754702962021-03-07 11:07:45150 days 11 hrs ago PancakeSwap: TWOK 2k Finance: TWOK Token0 BNB
0x8bbcf90b5043e323fade903092bc674fcc36414f5e1efcaf912d8da98f736d3354702552021-03-07 11:05:42150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x8bbcf90b5043e323fade903092bc674fcc36414f5e1efcaf912d8da98f736d3354702552021-03-07 11:05:42150 days 11 hrs ago PancakeSwap: TWOK 2k Finance: TWOK Token0 BNB
0x8bbcf90b5043e323fade903092bc674fcc36414f5e1efcaf912d8da98f736d3354702552021-03-07 11:05:42150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x8bbcf90b5043e323fade903092bc674fcc36414f5e1efcaf912d8da98f736d3354702552021-03-07 11:05:42150 days 11 hrs ago PancakeSwap: Router 2k Finance: TWOK Token0 BNB
0x8bbcf90b5043e323fade903092bc674fcc36414f5e1efcaf912d8da98f736d3354702552021-03-07 11:05:42150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x8bbcf90b5043e323fade903092bc674fcc36414f5e1efcaf912d8da98f736d3354702552021-03-07 11:05:42150 days 11 hrs ago PancakeSwap: Router 2k Finance: TWOK Token0 BNB
0x07b6f5b471f564aae1ce3523503c90204f682af387e59892f788cdfb16fde49854701162021-03-07 10:58:45150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x07b6f5b471f564aae1ce3523503c90204f682af387e59892f788cdfb16fde49854701162021-03-07 10:58:45150 days 11 hrs ago PancakeSwap: TWOK 2k Finance: TWOK Token0 BNB
0x07b6f5b471f564aae1ce3523503c90204f682af387e59892f788cdfb16fde49854701162021-03-07 10:58:45150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x07b6f5b471f564aae1ce3523503c90204f682af387e59892f788cdfb16fde49854701162021-03-07 10:58:45150 days 11 hrs ago PancakeSwap: Router 2k Finance: TWOK Token0 BNB
0x07b6f5b471f564aae1ce3523503c90204f682af387e59892f788cdfb16fde49854701162021-03-07 10:58:45150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x07b6f5b471f564aae1ce3523503c90204f682af387e59892f788cdfb16fde49854701162021-03-07 10:58:45150 days 11 hrs ago PancakeSwap: Router 2k Finance: TWOK Token0 BNB
0xacf34be9eca64b6f08676bcf0749dae7ad2ffb23f73beeb78f4704e174a4b98554700282021-03-07 10:54:21150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0xacf34be9eca64b6f08676bcf0749dae7ad2ffb23f73beeb78f4704e174a4b98554700282021-03-07 10:54:21150 days 11 hrs ago PancakeSwap: TWOK 2k Finance: TWOK Token0 BNB
0xacf34be9eca64b6f08676bcf0749dae7ad2ffb23f73beeb78f4704e174a4b98554700282021-03-07 10:54:21150 days 11 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0xacf34be9eca64b6f08676bcf0749dae7ad2ffb23f73beeb78f4704e174a4b98554700282021-03-07 10:54:21150 days 11 hrs ago PancakeSwap: TWOK 2k Finance: TWOK Token0 BNB
0x6264bfa39adec614c9978e456d71aeb12de3d66b6cb5955d3fd127e4c858535554687782021-03-07 9:51:51150 days 12 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x6264bfa39adec614c9978e456d71aeb12de3d66b6cb5955d3fd127e4c858535554687782021-03-07 9:51:51150 days 12 hrs ago PancakeSwap: TWOK 2k Finance: TWOK Token0 BNB
0x6264bfa39adec614c9978e456d71aeb12de3d66b6cb5955d3fd127e4c858535554687782021-03-07 9:51:51150 days 12 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
0x6264bfa39adec614c9978e456d71aeb12de3d66b6cb5955d3fd127e4c858535554687782021-03-07 9:51:51150 days 12 hrs ago PancakeSwap: Router 2k Finance: TWOK Token0 BNB
0x6264bfa39adec614c9978e456d71aeb12de3d66b6cb5955d3fd127e4c858535554687782021-03-07 9:51:51150 days 12 hrs ago 2k Finance: TWOK Token 0x918f71edcd37115aeb0b6a92b057880bba0300380 BNB
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x7e1eA653451352825540618878d5655a97d46748

Contract Name:
AdminUpgradeabilityProxy

Compiler Version
v0.6.8+commit.0bbfe453

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at BscScan.com on 2021-02-04
*/

// SPDX-License-Identifier: MIT

// File: MasterChef/contracts-proxy/Proxy.sol

pragma solidity ^0.6.0;

/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
abstract contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  fallback () payable external {
    _fallback();
  }

  /**
   * @dev Receive function.
   * Implemented entirely in `_fallback`.
   */
  receive () payable external {
    _fallback();
  }

  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal virtual view returns (address);

  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    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 Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal virtual {
  }

  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}

// File: @openzeppelin/contracts/utils/Address.sol

pragma solidity >=0.6.2 <0.8.0;

/**
 * @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) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @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");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        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);
            }
        }
    }
}

// File: MasterChef/contracts-proxy/UpgradeabilityProxy.sol

pragma solidity ^0.6.0;



/**
 * @title UpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract UpgradeabilityProxy is Proxy {
  /**
   * @dev Contract constructor.
   * @param _logic Address of the initial implementation.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, bytes memory _data) public payable {
    assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
    _setImplementation(_logic);
    if(_data.length > 0) {
      (bool success,) = _logic.delegatecall(_data);
      require(success);
    }
  }  

  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  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 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

  /**
   * @dev Returns the current implementation.
   * @return impl Address of the current implementation
   */
  function _implementation() internal override view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      impl := sload(slot)
    }
  }

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

  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) internal {
    require(Address.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");

    bytes32 slot = IMPLEMENTATION_SLOT;

    assembly {
      sstore(slot, newImplementation)
    }
  }
}

// File: MasterChef/contracts-proxy/AdminUpgradeabilityProxy.sol

pragma solidity ^0.6.0;


/**
 * @title AdminUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract AdminUpgradeabilityProxy is UpgradeabilityProxy {
  /**
   * Contract constructor.
   * @param _logic address of the initial implementation.
   * @param _admin Address of the proxy administrator.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  constructor(address _logic, address _admin, bytes memory _data) UpgradeabilityProxy(_logic, _data) public payable {
    assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
    _setAdmin(_admin);
  }

  /**
   * @dev Emitted when the administration has been transferred.
   * @param previousAdmin Address of the previous admin.
   * @param newAdmin Address of the new admin.
   */
  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 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

  /**
   * @dev Modifier to check whether the `msg.sender` is the admin.
   * If it is, it will run the function. Otherwise, it will delegate the call
   * to the implementation.
   */
  modifier ifAdmin() {
    if (msg.sender == _admin()) {
      _;
    } else {
      _fallback();
    }
  }

  /**
   * @return The address of the proxy admin.
   */
  function admin() external ifAdmin returns (address) {
    return _admin();
  }

  /**
   * @return The address of the implementation.
   */
  function implementation() external ifAdmin returns (address) {
    return _implementation();
  }

  /**
   * @dev Changes the admin of the proxy.
   * Only the current admin can call this function.
   * @param newAdmin Address to transfer proxy administration to.
   */
  function changeAdmin(address newAdmin) external ifAdmin {
    require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
    emit AdminChanged(_admin(), newAdmin);
    _setAdmin(newAdmin);
  }

  /**
   * @dev Upgrade the backing implementation of the proxy.
   * Only the admin can call this function.
   * @param newImplementation Address of the new implementation.
   */
  function upgradeTo(address newImplementation) external ifAdmin {
    _upgradeTo(newImplementation);
  }

  /**
   * @dev Upgrade the backing implementation of the proxy and call a function
   * on the new implementation.
   * This is useful to initialize the proxied contract.
   * @param newImplementation Address of the new implementation.
   * @param data Data to send as msg.data in the low level call.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   */
  function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin {
    _upgradeTo(newImplementation);
    (bool success,) = newImplementation.delegatecall(data);
    require(success);
  }

  /**
   * @return adm The admin slot.
   */
  function _admin() internal view returns (address adm) {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      adm := sload(slot)
    }
  }

  /**
   * @dev Sets the address of the proxy admin.
   * @param newAdmin Address of the new proxy admin.
   */
  function _setAdmin(address newAdmin) internal {
    bytes32 slot = ADMIN_SLOT;

    assembly {
      sstore(slot, newAdmin)
    }
  }

  /**
   * @dev Only fall back when the sender is not the admin.
   */
  function _willFallback() internal override virtual {
    require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
    super._willFallback();
  }
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"_admin","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","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://6e221e2a3547bd97244b05ed46430b1b078ba097cb2a4e25ec3d79cf9ac9f02c
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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