Contract 0xE8E5cd156f89F7bdB267EabD5C43Af3d5AF2A78f

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x53e32d04fcf2860d9d992e3a62b07978ab98c596d7e075904800cc66f7f48358Create Lock239877972022-01-21 13:18:591 hr 59 mins ago0x3b753cd82ba9612e8b5dfb6e6e5d0e46d0d87494 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.106859486162 250.784994514
0xae9c9a8d34efc31f66f73612c0a9fd63bfc67c29b69954f3dc6163332fc8c0ccCreate Lock239228872022-01-19 22:26:041 day 16 hrs ago0x620d0d4905a382e4508231a7dfc8717e280c700a IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.015462396888 36.321944093
0xe004c52362d81b5bcb4137ece9c68bb48cb5947a304ee83d17e9640b3c4a059cCreate Lock239195312022-01-19 20:26:241 day 18 hrs ago0x620d0d4905a382e4508231a7dfc8717e280c700a IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.027397661575 63.533166622
0x202ac556870ad72520791939c7fbd90aefe20e3eae3aefae3434f33a77807084Create Lock239191912022-01-19 20:14:441 day 19 hrs ago0x620d0d4905a382e4508231a7dfc8717e280c700a IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.15691371432 363.80052379
0xa7f8c7e08f4909975e9c01cf461eff99641dddcc1c70e6f0005b70e037484338Create Lock239187572022-01-19 19:57:401 day 19 hrs ago0x620d0d4905a382e4508231a7dfc8717e280c700a IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.015402822419 36.186080824
0x820c642d55f089776662d25e17dfe2aab043cfbb99ece21f0297f875cf38b5b3Create Lock239185112022-01-19 19:49:121 day 19 hrs ago0x620d0d4905a382e4508231a7dfc8717e280c700a IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.040598461287 95.354377749
0x816b35b87ca8f48568e7476521d1e8f06b55144c6b01b0072b9e14387a877cc9Create Lock239133202022-01-19 16:39:511 day 22 hrs ago0x60929dec08a1956f853a18f018b3920c974ef874 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.069764862567 156.545606364
0x96737489d71516c4588cf34e8af2cc11b922ae69dcb863b77459accac02f2d6cCreate Lock239043252022-01-19 11:06:472 days 4 hrs ago0x17a314918b89cb54016baf51f562029f7f5c3f6b IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.120446108991 282.670990357
0x60cb00dd9256f251f16954cf3a1ace1ab72f0d15eaf5b7277b0034ed6d708ecfCreate Lock239015742022-01-19 9:29:252 days 5 hrs ago0x04a8a22e5ef364c5237df13317c4f083f32c2cc4 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.052695353507 123.682915483
0x4452c83b7d91c71eaca7f970f6e7c6463bd8b9cffa7d663a9388a886ff335243Create Lock238934722022-01-19 4:43:582 days 10 hrs ago0x9d3ea9e9adde71141f4534db3b9b80df3d03ee5f IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.026705650213 62.71346296
0xe71cea7a0088afcc4eab60b1cd63848b6c1cf99d27520a9b84969b4962689e7eCreate Lock238933842022-01-19 4:40:582 days 10 hrs ago0x9d3ea9e9adde71141f4534db3b9b80df3d03ee5f IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.037991072466 89.215267066
0xc580bd91f32b5760fde6724b19b38e2e3530449096ab0141e71638d983451136Create Lock238933842022-01-19 4:40:582 days 10 hrs ago0x9d3ea9e9adde71141f4534db3b9b80df3d03ee5f IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.026762132022 62.846100429
0x1f3a56e54eb2954c27357ed20d7ca56aee6ae32226c6eef1f5dbc05dee6cd9d7Create Lock238768862022-01-18 18:54:262 days 20 hrs ago0x4323efca51a945fb964ac56c48d5d43813e6e7f3 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.062378941494 139.934633612
0x3e52a8cabde32c5eef5ece33020a6b56b861447a59ec0833ff3ab9ce31d130feCreate Lock238689932022-01-18 14:19:533 days 58 mins ago0xfad24dd7573986d827bda9c0171d37e19f6a9f94 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.076899487025172.476061834
0xccbc025d0b15de22bef46440d2ec185c314618c384b43e3eebf94c07b23b254fCreate Lock238322762022-01-17 16:15:183 days 23 hrs ago0x0a9cb7ce270b6e2eedfb2ab7699bedb15f564dba IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.0156028635
0x118aaecce8022aa338a7dd0811f2240460d17a3e6686a550b3561ae2de88edf3Create Lock238193302022-01-17 8:10:184 days 7 hrs ago0x02e63c1beed8ff35c2a3636eaa46a05f23f43878 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.0133702830
0xebaa6a52e3ed74dffb1d98eb1747f0eb29fb7d175f0b5b70823f4249c10f72e0Create Lock238137622022-01-17 4:39:394 days 10 hrs ago0x41a7758caa1fe15be9f9432c9deb06faec08989a IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.01381781631
0xb9166c4deee85aa36288c13a1fd2ed229a047cd989348af9174b5aeec2564377Create Lock238089992022-01-17 1:55:514 days 13 hrs ago0x23400cf223d1cd81e65d00649b7285c7a88a1092 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.0133702830
0x56f698e099de9d357e06227f2d0870b5496d7c957f2934a2ff2cf167922c0391Create Lock237929962022-01-16 16:19:254 days 22 hrs ago0xecb4c1245665e8a1f43826355aab0dd6bf336e05 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.022286850
0xc31338a3be0bcaa6efbd9c17e6e9ef1d77d37c9140b6cce61c30e297a3553e76Create Lock237891952022-01-16 13:53:495 days 1 hr ago0x3a331fde6fb5ca4bebbc3e8208239dfe1a2fdd81 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.013381830
0xfae2b84c5a600f64aff24d1c9f5741206ab672db16e422690356491351d4816aCreate Lock237853192022-01-16 11:29:015 days 3 hrs ago0x13d7bf973d25bd6728f27ffb953eb55d066d4bb3 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.012772230.000000001
0x7521eb3cb6b956b61b3ee23bc553289b39f14db3f190281020f0de3a5c8ea695Create Lock237837552022-01-16 10:26:515 days 4 hrs ago0x7eeab4f134fcfa6fcaf3987d391f1d626f75f6e1 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.0127750830
0xa8aabe5e1e97a427ec05e79718023209a40f95e1672f126f1b25aa9e1d628eecCreate Lock237732462022-01-16 4:14:175 days 11 hrs ago0x399bf695660aa51b2eaaa062911863b1a8fed229 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.0133864830
0x1935c670c4c6a3ebbe337e7b7fcf00feaa87f815ec2d4cad71f6ad232a069bfdCreate Lock237730672022-01-16 4:08:115 days 11 hrs ago0x399bf695660aa51b2eaaa062911863b1a8fed229 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.0147232230
0x49967a31a41ebb79185cb553b2d6e8ecd6de6ddee476ec7872f3f8decd268b1cCreate Lock237726132022-01-16 3:52:355 days 11 hrs ago0x399bf695660aa51b2eaaa062911863b1a8fed229 IN  0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f0 MATIC0.016411208430.6
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Latest 25 internal transaction
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0x53e32d04fcf2860d9d992e3a62b07978ab98c596d7e075904800cc66f7f48358239877972022-01-21 13:18:591 hr 59 mins ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xae9c9a8d34efc31f66f73612c0a9fd63bfc67c29b69954f3dc6163332fc8c0cc239228872022-01-19 22:26:041 day 16 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xe004c52362d81b5bcb4137ece9c68bb48cb5947a304ee83d17e9640b3c4a059c239195312022-01-19 20:26:241 day 18 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x202ac556870ad72520791939c7fbd90aefe20e3eae3aefae3434f33a77807084239191912022-01-19 20:14:441 day 19 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xa7f8c7e08f4909975e9c01cf461eff99641dddcc1c70e6f0005b70e037484338239187572022-01-19 19:57:401 day 19 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x820c642d55f089776662d25e17dfe2aab043cfbb99ece21f0297f875cf38b5b3239185112022-01-19 19:49:121 day 19 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x816b35b87ca8f48568e7476521d1e8f06b55144c6b01b0072b9e14387a877cc9239133202022-01-19 16:39:511 day 22 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x96737489d71516c4588cf34e8af2cc11b922ae69dcb863b77459accac02f2d6c239043252022-01-19 11:06:472 days 4 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x60cb00dd9256f251f16954cf3a1ace1ab72f0d15eaf5b7277b0034ed6d708ecf239015742022-01-19 9:29:252 days 5 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x4452c83b7d91c71eaca7f970f6e7c6463bd8b9cffa7d663a9388a886ff335243238934722022-01-19 4:43:582 days 10 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xe71cea7a0088afcc4eab60b1cd63848b6c1cf99d27520a9b84969b4962689e7e238933842022-01-19 4:40:582 days 10 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xc580bd91f32b5760fde6724b19b38e2e3530449096ab0141e71638d983451136238933842022-01-19 4:40:582 days 10 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x1f3a56e54eb2954c27357ed20d7ca56aee6ae32226c6eef1f5dbc05dee6cd9d7238768862022-01-18 18:54:262 days 20 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x3e52a8cabde32c5eef5ece33020a6b56b861447a59ec0833ff3ab9ce31d130fe238689932022-01-18 14:19:533 days 58 mins ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xccbc025d0b15de22bef46440d2ec185c314618c384b43e3eebf94c07b23b254f238322762022-01-17 16:15:183 days 23 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x118aaecce8022aa338a7dd0811f2240460d17a3e6686a550b3561ae2de88edf3238193302022-01-17 8:10:184 days 7 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xebaa6a52e3ed74dffb1d98eb1747f0eb29fb7d175f0b5b70823f4249c10f72e0238137622022-01-17 4:39:394 days 10 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xb9166c4deee85aa36288c13a1fd2ed229a047cd989348af9174b5aeec2564377238089992022-01-17 1:55:514 days 13 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x56f698e099de9d357e06227f2d0870b5496d7c957f2934a2ff2cf167922c0391237929962022-01-16 16:19:254 days 22 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xc31338a3be0bcaa6efbd9c17e6e9ef1d77d37c9140b6cce61c30e297a3553e76237891952022-01-16 13:53:495 days 1 hr ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xfae2b84c5a600f64aff24d1c9f5741206ab672db16e422690356491351d4816a237853192022-01-16 11:29:015 days 3 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x7521eb3cb6b956b61b3ee23bc553289b39f14db3f190281020f0de3a5c8ea695237837552022-01-16 10:26:515 days 4 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0xa8aabe5e1e97a427ec05e79718023209a40f95e1672f126f1b25aa9e1d628eec237732462022-01-16 4:14:175 days 11 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x1935c670c4c6a3ebbe337e7b7fcf00feaa87f815ec2d4cad71f6ad232a069bfd237730672022-01-16 4:08:115 days 11 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
0x49967a31a41ebb79185cb553b2d6e8ecd6de6ddee476ec7872f3f8decd268b1c237726132022-01-16 3:52:355 days 11 hrs ago 0xe8e5cd156f89f7bdb267eabd5c43af3d5af2a78f  Contract Creation0 MATIC
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Similar Match Source Code
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

[{"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":"beacon","type":"address"}],"name":"BeaconUpgraded","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":"admin_","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":"implementation_","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://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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