Contract 0xa46aff3ab117b51f33db178593552d0ca0b1365e 2

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x4f8f63e8aca05475ab432cf1aa96b99bf5c7b006653166c16e42670005fba890Compete285476702022-05-20 12:08:242 hrs 6 mins ago0x21f179c79a159359d20a94f68b99ad88db44afca IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.020521317658.8
0xf17e62d81c33cc08397977e496aba640a529e0359cc413e81430bbc99e73f7b3Withdraw285206722022-05-19 20:01:4918 hrs 12 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004888649176 33.480000115
0x5eff4d62c735cd84be44d8b9e74dfdd1b788c6a6e01cb46ea36a0ff3f82e0e4fWithdraw285206392022-05-19 20:00:3918 hrs 14 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004847366 33.2
0x1938ef2e8c4fc40daa2bb9a2fc87a996cefa765eff425871684ba191a63de25dWithdraw285206002022-05-19 19:59:2118 hrs 15 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004911608205 33.64000004
0xf13df70faab34fb59cfec020f9e7f1edef012541eb973557bd4f648fdcf963d9Withdraw285205532022-05-19 19:57:4318 hrs 17 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004934969011 33.80000008
0x7f9c9043acc9b6adf1888660bf4f770a3d4037eba34ed1e5d4a491c42556244dWithdraw285205162022-05-19 19:56:2918 hrs 18 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004912011903 33.640000162
0x4d986646e776dad4d3530c78e8f8b2860bc2e006fb5d4131e14f5c6585c9f117Withdraw285204662022-05-19 19:54:4518 hrs 20 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004894489922 33.520000562
0x62f5651f9df741c4f94ef5194e2c53afe59d75a73ce310bbd5bafc5e64b940f1Withdraw285203412022-05-19 19:50:2718 hrs 24 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004438916902 30.4000007
0x4c01507d256cb2c43329d2d8e0b3b6d2f3a537181cbfeab3d36385ee938b5f55Withdraw285202432022-05-19 19:47:0318 hrs 27 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004524001186 30.985248356
0x27e2e1efdf198beb7424546f8347f53b1688d5a8702c3e96011816b12f3669dcWithdraw285201852022-05-19 19:45:0318 hrs 29 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004623759437 31.665898065
0x8a93e940547d8b3415227634ac16f75e2ee98c7c7d7fa8f2889cdf939b732005Withdraw285195772022-05-19 19:24:1118 hrs 50 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.00549607988 37.64
0x88a5dd07fb5e8877c683f5438ab7b00fed516f1212dab3cc1fea03749bcc15e4Withdraw285194952022-05-19 19:21:2318 hrs 53 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.00596355755 36.560000187
0x30a951e514eb4243fc160a42e3fba2114bbabc12236ab426129f093353268954Withdraw285194502022-05-19 19:19:4918 hrs 54 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.005258892168 32.240000542
0xecd70625a3a0481610dd0fb68be33b881100c1bbcf1df4e0045370ad99cb120fWithdraw285194202022-05-19 19:18:4518 hrs 56 mins ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.005539060967 31.200000946
0xa5b0f4bae1ffe38123e21feaf80d2ea50a4b4724da51d30fcb75a3ccfa1bf923Set Approval For...285079472022-05-19 12:33:061 day 1 hr ago0xd2e0670ffd8ef0fc49bef32aa80557340c2678b3 IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.001752689712 51.993168571
0x5f33bd3dd206fcf72b7489097f2c5bd83477d722c4c429e1355e4761e840db86Set Approval For...285079182022-05-19 12:32:081 day 1 hr ago0xd2e0670ffd8ef0fc49bef32aa80557340c2678b3 IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.003035650158 56.624699841
0x20930ce8feb4a12820914938c818562c8981fa2834fa1ad57de812ee7387e4adWithdraw284488962022-05-18 0:36:122 days 13 hrs ago0x52b3f433ad4277011ff789a6187113c676bb5992 IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.0097247322 66.6
0x1a59b47fd2ccd53b0d3111d7c3ca525be65a10888599bac0f9758b368e9f91bdWithdraw284488882022-05-18 0:35:522 days 13 hrs ago0x52b3f433ad4277011ff789a6187113c676bb5992 IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.0093742914 64.2
0x2979ae23dbd1cbb5c8381a9cae60f97b29c6b4b8c74a045fab53b9bbf78f8796Withdraw284488782022-05-18 0:35:322 days 13 hrs ago0x52b3f433ad4277011ff789a6187113c676bb5992 IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.011744424 72
0xcb5223ab53d6b6aea1657fc4e36cfa7b2c11dba185e60b2e7eb926c36d73522fFound Auctioned284378362022-05-17 17:54:002 days 20 hrs ago0x2588253cc1daac3e7d823b9190ec87e75c67f2c4 IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e15 MATIC0.0150890460
0x5d65808014b14a2b1b3f4cb0685839445bd257073011e76a8322b2cb3023c05fCompete284273622022-05-17 11:25:563 days 2 hrs ago0xa63c72f57eaec7bef6cf6ce5c61cfde05dae9fcf IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.0154684684854.72
0x45b539b52d9a0f56945db5f5eaad03a2db075591aa673489447a1fe0ca388d19Compete284272742022-05-17 11:22:563 days 2 hrs ago0xa63c72f57eaec7bef6cf6ce5c61cfde05dae9fcf IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.0133605993654.72
0x48cc5f0661370ce448f36352882b930d7899b58ed62d91b74f13c0ea1320a382Set Approval For...284270442022-05-17 11:15:003 days 2 hrs ago0x8db32d6ecce6b7a3dbebfaebe9b329022ec86acf IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.00166191 31
0xd4e5a49972f24e516f8ce47e879d4cc602f05d022f8403547a41a0f7dac6287cRename284222082022-05-17 8:22:043 days 5 hrs ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.004033848081 35.120000014
0x3194e5e058f2821153a7714e46f5e3ff3f89aa336c09c23f14ec6685ba22c35eWithdraw284221752022-05-17 8:20:543 days 5 hrs ago0x53914bda3129b21f9b0708f1e7ee675df22261fe IN  0xa46aff3ab117b51f33db178593552d0ca0b1365e0 MATIC0.005051773002 34.600000015
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0xcb5223ab53d6b6aea1657fc4e36cfa7b2c11dba185e60b2e7eb926c36d73522f284378362022-05-17 17:54:002 days 20 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0x08f4f3f1625ed0b4f91e5e93f51c2de9997ac7ea2a18990ae1814c2c35ac22fc283890742022-05-16 12:34:584 days 1 hr ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0xf4695b29c7a8437e1d97c43855b4a29be7dfc5ef7f728662342e857a405daa7a282143292022-05-12 3:22:538 days 10 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0xea89bd767bd0b56312a0d3ea87dc848ccc1ac0162d307064718b8ef4c86aa3d8279821002022-05-06 6:34:1414 days 7 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0x20da27a2b845f6309f9a087c8593aadbfff95d54e73eaa8bd4edfa5900b7cf53279820562022-05-06 6:32:4214 days 7 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae45 MATIC
0xb33762e28fdf67800a3507835b0225f64c764daa6d47506bd98bfa26c9ca83b3277913652022-05-01 10:08:5119 days 4 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0xfe7c758bc6da1d08b62fed7318d439fc5de5eaf5d35cf49d642326f5e2c0e98b277904752022-05-01 9:36:0219 days 4 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0x190e7a63dfe61ae2fc9813a50ae64d2a9adfc6e26ad326a5bbf04dcc79cb9fbb276701912022-04-28 8:29:4322 days 5 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae45 MATIC
0xdcf61a28789b93648523421224c1f9c17a1e0638b910fd953c27698219007f2a276688992022-04-28 7:43:1122 days 6 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0x7103571076d5c7809596cfefcfcce5e723799053aee3cd42a633bed6affe8e38273917822022-04-21 6:38:0029 days 7 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae6 MATIC
0xed6978393976ed2a56cf95f68ccf54899e5dd55f81e47f5efaef6de33561fa98273917442022-04-21 6:36:4429 days 7 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae6.2 MATIC
0xed6978393976ed2a56cf95f68ccf54899e5dd55f81e47f5efaef6de33561fa98273917442022-04-21 6:36:4429 days 7 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x433aa534f30d0d2ad7fa4b89f12928ec4eeee4b13.8 MATIC
0x3d5630e077c44599b6aac1cf40db8c557ee57667c7ed5d279b938571ff6b0577273916192022-04-21 6:32:2629 days 7 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0xfa23d0fb7c4611accb16c01c8bfbd7922936146125496acddffadeeb00082553273916172022-04-21 6:32:2229 days 7 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0xf790ebd1ec88c9654568ae68413586b508a3c64b2ab6c9f5f139e2d6f52db5ba273186852022-04-19 9:35:1531 days 4 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae6.2 MATIC
0xf790ebd1ec88c9654568ae68413586b508a3c64b2ab6c9f5f139e2d6f52db5ba273186852022-04-19 9:35:1531 days 4 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0xce68e215821ed8e0b31b3227afb9d019650080c53.8 MATIC
0x7d8f46feca0f4e62ab19c50dceb8b76d06249b31c2705d687735b60c5e9ad9b5272957152022-04-18 19:23:3831 days 18 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0xe536811cab09a14f35e6bb935aff04c310b695082d3e6b15a70e7e5d9f873b4c272924712022-04-18 17:22:5631 days 20 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae6.2 MATIC
0xe536811cab09a14f35e6bb935aff04c310b695082d3e6b15a70e7e5d9f873b4c272924712022-04-18 17:22:5631 days 20 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x53914bda3129b21f9b0708f1e7ee675df22261fe3.8 MATIC
0x9560355c4f8a24a0bed5430b744fc19cf2e3e3d3d9edd91517724ae0ba38a868272902622022-04-18 16:02:4131 days 22 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae6.2 MATIC
0x9560355c4f8a24a0bed5430b744fc19cf2e3e3d3d9edd91517724ae0ba38a868272902622022-04-18 16:02:4131 days 22 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0xbdd277c874d78164d564e9396076fb9fc8c6bdd23.8 MATIC
0x6203689d384636ac570877c09b330da72d993a432b00531b533a54ec2a648ae5270441282022-04-12 10:15:4138 days 3 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0x4712e94d97474fec618f9c4a374b737b921bbe6ec0d52764879c308c7c5a1741270302752022-04-12 1:53:0838 days 12 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae6 MATIC
0x2f331bd110e9b6b077328bf51eafed074a14b06d7f99017fecd190765b98e4ba269733882022-04-10 15:41:1139 days 22 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae15 MATIC
0x9d33cf99398611b10a78b6a0f6b0f6a02b09a70666fd2534074f0248ff2d9398268749862022-04-08 3:02:5042 days 11 hrs ago 0xa46aff3ab117b51f33db178593552d0ca0b1365e0x29db7027292ca162817a31f62453161b3d2eceae6.2 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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