Contract 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 1

 
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0x8cb68b847f53c24eb8a58f5502ab0ed56c63612a9cd78dcb52adfc9648e18669Set Pool Weight188780442021-09-08 10:13:1037 days 22 hrs ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.01365312
0x94d7ee3e0725ce9aeafdcbfcd01f669bffe84091ce49626f76ef610e010cbd04Set Reward Info188100862021-09-06 12:50:2439 days 19 hrs ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.00009456855
0x482888c9ad728d7d119fb997c5365a2c66b119ba6f4ca9cfcee0a628a2f5e29aSetup186950572021-09-03 8:34:2843 days ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.0000912324
0x9ed050f08cfe30af3c4fdae4e9cc39a179348e9649e4893d0c1175771cd155afSet Pool Weight186949782021-09-03 8:31:4643 days 3 mins ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.000059483
0x852689614814584746890e6ee0b7240283757f81ece68214b6301069e4079918Set Pool Weight186949202021-09-03 8:29:4643 days 5 mins ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.000059483
0x8edcb0e67986737ff02d2c81a31acb848536ab28654cdd72f698c431a4470eabSet Pool Weight186948952021-09-03 8:28:5243 days 6 mins ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.000059483
0x6716ed970947b39f5552a0ff0aa667d2d032c84c7a37fab450c069b662998b90Set Pool Weight186948672021-09-03 8:27:5643 days 7 mins ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.000059471
0x57f740571d3b08b215304b86b08cc734b727c9bb3d14ce04910b5597e028b41dSet Pool Weight186948432021-09-03 8:27:0443 days 8 mins ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.000059483
0x700096295c79555f5383d46c9c729aeafac2d477395b73b34d8ddcfc8c418ebfSet Pool Weight186948142021-09-03 8:26:0643 days 9 mins ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.000076583
0x7f4d3aa083493d75e6fee167e9ba71d169b4157c9f2b531ce3165d40a2827fbfSet Reward Info186947232021-09-03 8:23:0043 days 12 mins ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  0xd2171abb60d2994cf9acb767f2116cf47bbf596f0 MATIC0.000100218
0xf0e928b888edef5cf5ce019b14f402ed20ba939c3816b997d2afa2cf43216f4e0x60806040186929902021-09-03 7:21:1443 days 1 hr ago0x345c9ae61ff6e68b319d61082a017ba854892488 IN  Contract Creation0 MATIC0.00066909
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0xef31bf49ddfec79676dbd81510c69bf1830408570621b2a66ed25af3ccf4cd3b202680422021-10-16 5:34:393 hrs ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f119.8 MATIC
0x4ad1661a8979d11b6803479f5ef93f77079c60ab524af78a3410f520b4224d50202661612021-10-16 4:00:044 hrs 35 mins ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f150 MATIC
0x54f0ca98315d83b1a588709f1bc24573802feac9d9799b0f85783cf7b1c94c1a202634702021-10-16 1:52:456 hrs 42 mins ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f186 MATIC
0x0ab5083d58acde5ba0678e442ec7db754fc82985df284553d54fcd7065941172202514652021-10-15 18:08:4214 hrs 26 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e300.35 MATIC
0x0ab5083d58acde5ba0678e442ec7db754fc82985df284553d54fcd7065941172202514652021-10-15 18:08:4214 hrs 26 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f0xa598307721247c8a74eed5edeaca1fc11f0e8dc1349.65 MATIC
0x2d5db74547953666c56ce8f7864434264947dc7e54a26fbb9f2f79f5f908d51f202510332021-10-15 17:51:4214 hrs 43 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e303.688 MATIC
0x2d5db74547953666c56ce8f7864434264947dc7e54a26fbb9f2f79f5f908d51f202510332021-10-15 17:51:4214 hrs 43 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f0xf213474c895c6f5965c4096e4d8b6f40f6d009193,684.312 MATIC
0xb08ba92b4a8f44e0eb381ad2ceb877a62bf40b1d575b5ddd75d184a1b32210a1202506762021-10-15 17:37:1614 hrs 58 mins ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f15,000 MATIC
0x8877c2d7ff0f69ecf3d40c74c04c762aa3afc8db90df1688db5fbecdccfbfa65202496172021-10-15 16:56:0515 hrs 39 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e300.15838 MATIC
0x8877c2d7ff0f69ecf3d40c74c04c762aa3afc8db90df1688db5fbecdccfbfa65202496172021-10-15 16:56:0515 hrs 39 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f0x076a961f27f84bf69d7d86ff7b52b8a54626a134158.22162 MATIC
0xea2096c1c750804054ea92e414266499828084c8496d90a63b22a5e62a6305d0202488842021-10-15 16:26:2016 hrs 8 mins ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f20,000 MATIC
0x6a12a36779c20236f6e2181a4396994004089a0910fe9dc36a5d5141b70f4a09202411802021-10-15 11:15:1121 hrs 20 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e300.199 MATIC
0x6a12a36779c20236f6e2181a4396994004089a0910fe9dc36a5d5141b70f4a09202411802021-10-15 11:15:1121 hrs 20 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f0xef927cf6873bb54ba27820a5482f727ecf6d4a07198.801 MATIC
0x780fdcda3f6bb8c532130bf7c194e35b7849374e12b487b39b7bef3e7c03c100202382232021-10-15 9:05:1323 hrs 30 mins ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f196.5 MATIC
0x9c12c7ac46352cbb56021ee9fd6835becb0c6ae2d98c25af4b17126eb58fe1de202375752021-10-15 8:38:1623 hrs 57 mins ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f373,894.381425277658435851 MATIC
0xe9d7dec2da7a8a96a022282578523630d8ce9b17f9461e8a405e69e542917acd202373492021-10-15 8:28:191 day 6 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e300.6732 MATIC
0xe9d7dec2da7a8a96a022282578523630d8ce9b17f9461e8a405e69e542917acd202373492021-10-15 8:28:191 day 6 mins ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f0x82f1291ce66e8be1d53c2eace07872007f8afa88672.5268 MATIC
0xe6c49ea6b6f3599b920bd91d0a22017368f4788bb7f63f95178f1a4ec750adf3202351942021-10-15 6:34:101 day 2 hrs ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e300.123 MATIC
0xe6c49ea6b6f3599b920bd91d0a22017368f4788bb7f63f95178f1a4ec750adf3202351942021-10-15 6:34:101 day 2 hrs ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f0x5b51e2376a385e059e4d74aaca03546d55af491a122.877 MATIC
0x5c914024ae9ee69a2a101d7dea5ee1021d4def33c424a334e2d68f09599c4a53202333702021-10-15 5:07:081 day 3 hrs ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e3048.77 MATIC
0x5c914024ae9ee69a2a101d7dea5ee1021d4def33c424a334e2d68f09599c4a53202333702021-10-15 5:07:081 day 3 hrs ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f0x3c0fa0643322feff1b54c3b19de6aa6fa2e1fa0348,721.23 MATIC
0xdb623b14de1f29ce53e4c8db856a8a209624181a9e09bd04a542a532093428ed202217382021-10-14 21:04:061 day 11 hrs ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f700 MATIC
0x8b926c09a2266a7fe25f10a784079189644ce578f18b158a142912d0934e8fac202212072021-10-14 20:44:281 day 11 hrs ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f1,004.927696032722577379 MATIC
0xbbf431c8a44d4fac8191064b05f1b81418bb29a25b9ed0bd520c22dd163ae7d4202150802021-10-14 16:16:531 day 16 hrs ago 0xd50e8ce9d5c1f5228bcc77e318907bb4960578ef 0xd2171abb60d2994cf9acb767f2116cf47bbf596f1,630 MATIC
0x71f908ae302877bcfb9b11819052bc8cc5061e41bac27e2eb917f4a19a2877ff202150572021-10-14 16:16:071 day 16 hrs ago 0xd2171abb60d2994cf9acb767f2116cf47bbf596f 0x3192ccddf1cdce4ff055ebc80f3f0231b86a7e301.634 MATIC
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x5841565Bd231a868e47347d9749eF06AF5cA0970

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-06-12
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}

/**
 * @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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(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);
            }
        }
    }
}

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

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

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal {
        address oldImplementation = _getImplementation();

        // Initial upgrade and setup call
        _setImplementation(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }

        // Perform rollback test if not already in progress
        StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot.getBooleanSlot(_ROLLBACK_SLOT);
        if (!rollbackTesting.value) {
            // Trigger rollback using upgradeTo from the new implementation
            rollbackTesting.value = true;
            Address.functionDelegateCall(
                newImplementation,
                abi.encodeWithSignature(
                    "upgradeTo(address)",
                    oldImplementation
                )
            );
            rollbackTesting.value = false;
            // Check rollback was effective
            require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades");
            // Finally reset to the new implementation and log the upgrade
            _setImplementation(newImplementation);
            emit Upgraded(newImplementation);
        }
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }

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

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

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

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(
            Address.isContract(newBeacon),
            "ERC1967: new beacon is not a contract"
        );
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }
}

/**
 * @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 virtual {
        // 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 view virtual 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 virtual {
        _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 () external payable virtual {
        _fallback();
    }

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

/**
 * @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.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @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) payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _upgradeToAndCall(_logic, _data, false);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        return ERC1967Upgrade._getImplementation();
    }
}

/**
 * @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 interface of your proxy.
 */
contract TransparentUpgradeableProxy is ERC1967Proxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
     */
    constructor(address _logic, address admin_, bytes memory _data) payable ERC1967Proxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _changeAdmin(admin_);
    }

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

    /**
     * @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 implementation_) {
        implementation_ = _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 virtual ifAdmin {
        _changeAdmin(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 {
        _upgradeToAndCall(newImplementation, bytes(""), false);
    }

    /**
     * @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 {
        _upgradeToAndCall(newImplementation, data, true);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address) {
        return _getAdmin();
    }

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

Contract Security Audit

Contract ABI

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Swarm Source

ipfs://93f028255035b61df476b13b9dba3c4f06f60e51b9b4caee31680b389aef327f
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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