Contract 0x947950bcc74888a40ffa2593c5798f11fc9124c4

 
Txn Hash
Block
From
To
Value [Txn Fee]
0x3d09a17bb9defd83392edaaa801d3dfa738724cef21a828c915bc2d95ee468dc82681842021-06-13 18:10:062 mins agoBinance: Hot Wallet IN  SushiSwap: SUSHI Token0 BNB0.00038871
0x1d78d7b74bd2966a58dd1602932132c5f54d6a60fc0a73cb97b704b79c6e45e682680552021-06-13 18:03:398 mins ago0xbc952e98db1ce3bea73abffd52f926922f1b117c IN  SushiSwap: SUSHI Token0 BNB0.000194475
0x429c50592f20fbf0d36be039051ed40bb9b2541bd1694b53a1cd63b96a4c327f82680382021-06-13 18:02:489 mins ago0x3d20a06526bdc8dcc3896742abc3bfe243567473 IN  SushiSwap: SUSHI Token0 BNB0.00023576
0xf160c5af051220c3ac08fc8c62011c1af1f27ffed018918fc27e9d5c2713ee1f82680212021-06-13 18:01:5710 mins agoBinance: Hot Wallet IN  SushiSwap: SUSHI Token0 BNB0.00038883
0xa996523d1e8be05e1f66ddc56f404258c6d858fb5bace31208f8d045acafcf1c82680112021-06-13 18:01:2710 mins ago0x0af672ade909ee225236081a7685232e74d78b72 IN  SushiSwap: SUSHI Token0 BNB0.000233442
0x7e535ba6068286034c145a19e4e83994ccfda1ff32b1993c1482a6fe5f3bbb0882679972021-06-13 18:00:4511 mins ago0x6aca1cb651fb9d1a207b2a279ced05480185aa52 IN  SushiSwap: SUSHI Token0 BNB0.000119475
0xdd0e10170dae943ece4beeaf124d7c441e8ae08bd980fb679a656e5a7ca8a15382679532021-06-13 17:58:3313 mins agoBinance: Hot Wallet IN  SushiSwap: SUSHI Token0 BNB0.00053883
0x9210d01f93c2b3bf09295a9b165b0f11010a58477c977280bbc0bd376d5c2e6582673992021-06-13 17:30:5141 mins agoBinance: Hot Wallet IN  SushiSwap: SUSHI Token0 BNB0.00038883
0x85ae18371b66aa8367e31259eb43c9c1037c2c2550689cc1a924e49bcbd79c8582672422021-06-13 17:23:0049 mins ago0x0b0a143400fbd4c608fa62d0f18f468927b94709 IN  SushiSwap: SUSHI Token0 BNB0.00023576
0xa26d2c22cb71d2930cca2062cdcb341241c31eeb99448402987f52a9e5bc8cbf82670892021-06-13 17:15:2156 mins ago0x35f3cca221f68331cea9fc9e0e0c466768bb67f1 IN  SushiSwap: SUSHI Token0 BNB0.000562368
0xd07913d994cca2cc2c4c5c8bd0e59fe9773493c72dbe70689d6125229a9d0ae182670462021-06-13 17:13:1258 mins ago0x571e58045a48a5141d20eef1d378ae6bce0c2fab IN  SushiSwap: SUSHI Token0 BNB0.000282912
0x4eb578da054e6756a14ba56c24f5613a82fe1d21780f08a6f4bf444d14072a6f82669732021-06-13 17:09:331 hr 2 mins agoBinance: Hot Wallet IN  SushiSwap: SUSHI Token0 BNB0.00053883
0xbd324418d03067f38141e8e8bdf10c32c9fab4aa6abc67437490bdd3680c050382667992021-06-13 17:00:461 hr 11 mins ago0x6aca1cb651fb9d1a207b2a279ced05480185aa52 IN  SushiSwap: SUSHI Token0 BNB0.000119475
0x46d466322ef650b3c5a5ef910749649305f6a871cdccfaaf03dd7c77b1538e9582663062021-06-13 16:35:161 hr 36 mins ago0x75896f4de659c5ea7b4ce6f05523b25de9addb40 IN  SushiSwap: SUSHI Token0 BNB0.00023576
0xee760a42047c8e98c01f1ed99bc4394c9389d7c70b6e9732287b143e52d1cf7e82662162021-06-13 16:30:461 hr 41 mins ago0x6aca1cb651fb9d1a207b2a279ced05480185aa52 IN  SushiSwap: SUSHI Token0 BNB0.000119415
0x1291fe9b71093f8a6ed10179e201abf6fad931955b410793d81dbcc7c6f38a0e82660752021-06-13 16:23:431 hr 48 mins ago0x5fa14270c772a99f956f49e5b10fee39d0550d3d IN  SushiSwap: SUSHI Token0 BNB0.00107814
0x334990063ecc3f87b50bace37af7ee61cd26c5f122c2d25245fb92e73cb9a08b82659702021-06-13 16:17:541 hr 54 mins ago0xe6c8bd6703a6de900690149b9fb947db6155a94e IN  SushiSwap: SUSHI Token0 BNB0.000396729
0x0d4b4d7cc97a649d9a25f09620cfd8b036eb203dcef6d74ff77d2a92851c1be282659432021-06-13 16:16:241 hr 55 mins ago0xe6c8bd6703a6de900690149b9fb947db6155a94e IN  SushiSwap: SUSHI Token0 BNB0.000549729
0xf9cfa800b7152f9421f38404ed7dfc9981146365a7b629ef8fe8b801ee65c1f682657002021-06-13 16:04:152 hrs 7 mins ago0xff067af930a925d1d4edc94cdc88ac0ca2e568df IN  SushiSwap: SUSHI Token0 BNB0.00023576
0xf0636307cec5d30132cc2757a4fd2039ec59a2a62f8986a26f9580c4facbb00382655962021-06-13 15:59:032 hrs 13 mins ago0xb0ba9773cfec730c5e5a483fed8322a9c8899ae9 IN  SushiSwap: SUSHI Token0 BNB0.00023337
0x3664e9c15e2999102ff6592c50165c4e46447ce86328b89ab519e68cdbb1355982655722021-06-13 15:57:512 hrs 14 mins ago0xf91853bb10ca846ca634718d4e85a8347554d1f6 IN  SushiSwap: SUSHI Token0 BNB0.00023576
0xa7a65e4e4fd1b31d5631818daa32f3b879189f8121a8001f469ee6f0c31dabe182655362021-06-13 15:56:032 hrs 16 mins ago0x884643d7840bbfac59206589d6da3fd0edf9f5a8 IN  SushiSwap: SUSHI Token0 BNB0.00013976
0xac270aa5f3b71ebdbe723f3e4274b2ee5b0e5a22a0830fa5e4adbe223674bac882655232021-06-13 15:55:242 hrs 16 mins ago0x884643d7840bbfac59206589d6da3fd0edf9f5a8 IN  SushiSwap: SUSHI Token0 BNB0.00023576
0xfadc0deba2824e019dbc1b521236fbe7f238652de218c92768ffe1cffb389a7782653022021-06-13 15:44:212 hrs 27 mins ago0xbb46c6e4d8a59520fbb11638c2d1228cc65f5a6c IN  SushiSwap: SUSHI Token0 BNB0.00008384
0xff620907317d07d040d46df7d5f799c482d74419cbbd134f7a3e27bacaa7c0dd82652462021-06-13 15:41:332 hrs 30 mins agoBinance: Hot Wallet IN  SushiSwap: SUSHI Token0 BNB0.00038883
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OVERVIEW

SushiSwap (SUSHI) is an example of an automated market maker (AMM). An increasingly popular tool among cryptocurrency users, AMMs are decentralized exchanges which use smart contracts to create markets for any given pair of tokens.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x35df16b5f39e1e38827f79255258e9757a088c49a5685b6d7cc63d20451809f154712972021-03-07 11:57:4898 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x35df16b5f39e1e38827f79255258e9757a088c49a5685b6d7cc63d20451809f154712972021-03-07 11:57:4898 days 6 hrs ago PancakeSwap: SUSHI-PASTA SushiSwap: SUSHI Token0 BNB
0x35df16b5f39e1e38827f79255258e9757a088c49a5685b6d7cc63d20451809f154712972021-03-07 11:57:4898 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x35df16b5f39e1e38827f79255258e9757a088c49a5685b6d7cc63d20451809f154712972021-03-07 11:57:4898 days 6 hrs ago PancakeSwap: SUSHI 2 SushiSwap: SUSHI Token0 BNB
0x35df16b5f39e1e38827f79255258e9757a088c49a5685b6d7cc63d20451809f154712972021-03-07 11:57:4898 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x35df16b5f39e1e38827f79255258e9757a088c49a5685b6d7cc63d20451809f154712972021-03-07 11:57:4898 days 6 hrs ago PancakeSwap: SUSHI 2 SushiSwap: SUSHI Token0 BNB
0x268e72be720e97a6b7382c931d38c48968ea8ab3cc2417a26607f8f82e498fab54712802021-03-07 11:56:5798 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x268e72be720e97a6b7382c931d38c48968ea8ab3cc2417a26607f8f82e498fab54712802021-03-07 11:56:5798 days 6 hrs ago PancakeSwap: ETH-SUSHI SushiSwap: SUSHI Token0 BNB
0x268e72be720e97a6b7382c931d38c48968ea8ab3cc2417a26607f8f82e498fab54712802021-03-07 11:56:5798 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x268e72be720e97a6b7382c931d38c48968ea8ab3cc2417a26607f8f82e498fab54712802021-03-07 11:56:5798 days 6 hrs ago PancakeSwap: Router SushiSwap: SUSHI Token0 BNB
0x4f4962a6fcdcd784fe0ec37ba36b3884a736241dd1e029478cc188c4bb58d1cd54712742021-03-07 11:56:3998 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x3038610089008921399b1ac9014954667241ee011dc01f587f1cfe3701d281e554712592021-03-07 11:55:5498 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x3038610089008921399b1ac9014954667241ee011dc01f587f1cfe3701d281e554712592021-03-07 11:55:5498 days 6 hrs ago PancakeSwap: ETH-SUSHI SushiSwap: SUSHI Token0 BNB
0x3038610089008921399b1ac9014954667241ee011dc01f587f1cfe3701d281e554712592021-03-07 11:55:5498 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x3038610089008921399b1ac9014954667241ee011dc01f587f1cfe3701d281e554712592021-03-07 11:55:5498 days 6 hrs ago PancakeSwap: ETH-SUSHI SushiSwap: SUSHI Token0 BNB
0x3038610089008921399b1ac9014954667241ee011dc01f587f1cfe3701d281e554712592021-03-07 11:55:5498 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x3038610089008921399b1ac9014954667241ee011dc01f587f1cfe3701d281e554712592021-03-07 11:55:5498 days 6 hrs ago PancakeSwap: ETH-SUSHI SushiSwap: SUSHI Token0 BNB
0xd5ebd9c5ea33ba098ba6e4239b119fa16c14203f6f00148fddcc1b96d42f94f954712432021-03-07 11:55:0698 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0xd5ebd9c5ea33ba098ba6e4239b119fa16c14203f6f00148fddcc1b96d42f94f954712432021-03-07 11:55:0698 days 6 hrs ago PancakeSwap: ETH-SUSHI SushiSwap: SUSHI Token0 BNB
0xd5ebd9c5ea33ba098ba6e4239b119fa16c14203f6f00148fddcc1b96d42f94f954712432021-03-07 11:55:0698 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0xd5ebd9c5ea33ba098ba6e4239b119fa16c14203f6f00148fddcc1b96d42f94f954712432021-03-07 11:55:0698 days 6 hrs ago PancakeSwap: Router SushiSwap: SUSHI Token0 BNB
0x148cac8084c4f962fc4f6772cc342167a3a82412a672940cf29baf7975f91c0854712372021-03-07 11:54:4898 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x148cac8084c4f962fc4f6772cc342167a3a82412a672940cf29baf7975f91c0854712372021-03-07 11:54:4898 days 6 hrs ago PancakeSwap: ETH-SUSHI SushiSwap: SUSHI Token0 BNB
0x148cac8084c4f962fc4f6772cc342167a3a82412a672940cf29baf7975f91c0854712372021-03-07 11:54:4898 days 6 hrs ago SushiSwap: SUSHI Token 0xba5fe23f8a3a24bed3236f05f2fcf35fd0bf0b5c0 BNB
0x148cac8084c4f962fc4f6772cc342167a3a82412a672940cf29baf7975f91c0854712372021-03-07 11:54:4898 days 6 hrs ago PancakeSwap: ETH-SUSHI SushiSwap: SUSHI Token0 BNB
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xA6Ec2Fe4F6040b188A926048f44c9A59Fca189d4

Contract Name:
BEP20UpgradeableProxy

Compiler Version
v0.6.4+commit.1dca32f3

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, Apache-2.0 license
/**
 *Submitted for verification at BscScan.com on 2020-09-29
*/

// File: openzeppelin-solidity/contracts/proxy/Proxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 * 
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 * 
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

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

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

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

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

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

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

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

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

// File: openzeppelin-solidity/contracts/utils/Address.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.2;

/**
 * @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 in 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");
        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);
            }
        }
    }
}

// File: openzeppelin-solidity/contracts/proxy/UpgradeableProxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;



/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 * 
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     * 
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) public payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            // solhint-disable-next-line avoid-low-level-calls
            (bool success,) = _logic.delegatecall(_data);
            require(success);
        }
    }

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

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

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

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

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

        bytes32 slot = _IMPLEMENTATION_SLOT;

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

// File: openzeppelin-solidity/contracts/proxy/TransparentUpgradeableProxy.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;


/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 * 
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 * 
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 * 
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 * 
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.
 */
contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address _logic, address _admin, bytes memory _data) public payable UpgradeableProxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(_admin);
    }

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

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

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

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

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

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

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

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

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

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

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

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

// File: contracts/BEP20UpgradeableProxy.sol

pragma solidity ^0.6.0;


contract BEP20UpgradeableProxy is TransparentUpgradeableProxy {

    constructor(address logic, address admin, bytes memory data) TransparentUpgradeableProxy(logic, admin, data) public {

    }

}

Contract ABI

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://5c518be5ecdac9ebba758e8ce0b8e0dcacae92de07203f44e322e833b133a575
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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