Contract 0x663462430834e220851a3e981d0e1199501b84f6 5

 

Contract Overview

Balance:
913.188812329909357151 MATIC

MATIC Value:
$603.07 (@ $0.66/MATIC)

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x5bd0b6ac7fb4d793ef6825625a1238903d2686de87ba370b4e928e24f83b57a7Zap Out285402372022-05-20 7:32:493 hrs 7 mins ago0xd413f6140a308c51ecd2820ac0bd1a7932a6d6b8 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.008118977718 38.800000566
0x90890e76b2d72e5ea80f09d58da9279e34dd8a37b81e9841a29da0888a4565fbZap In285268452022-05-19 23:38:5011 hrs 1 min ago0x9cea69b4843f0004f0010da78b238ada46da23c9 IN  0x663462430834e220851a3e981d0e1199501b84f69 MATIC0.007175888592 35.080656418
0x8a64fd96133b199a695be252f866da827e9504c669b9aa01d48d6d5f567a43b1Zap Out285260462022-05-19 23:09:1611 hrs 30 mins ago0xe7fa10899a90cfdf95c5b52cfe8f1b65544e7ed7 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.0087554440
0xe90f830b5554819f66fa3269f80a9a46da4d1b3fcb6704bda0a9d9de155d8c2dZap In Token285257762022-05-19 23:00:0011 hrs 39 mins ago0xe7fa10899a90cfdf95c5b52cfe8f1b65544e7ed7 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.0070611232
0x304c8549c1fed3460587cabf7c42ce921595a117e809f81435460a275edb4c76Zap Out285256412022-05-19 22:55:2011 hrs 44 mins ago0xe7fa10899a90cfdf95c5b52cfe8f1b65544e7ed7 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.00785700333
0x5747b4e868848250d76f7d5419c20044261a3ee03cdea711b5947280c04dfeadZap In285056952022-05-19 11:11:2223 hrs 28 mins ago0x4a5f3c16629313edcf12afb1a64959fc507b8792 IN  0x663462430834e220851a3e981d0e1199501b84f61 MATIC0.006296879677 31.030882048
0x245b3ee926bb36e52d6d6d33b3123177b829519393882e6cfb70319e11818e03Zap In285031252022-05-19 9:34:031 day 1 hr ago0xb85f2ea3da28acd6af21d335d0ccbcb2a27d23b4 IN  0x663462430834e220851a3e981d0e1199501b84f626.548854666318217 MATIC0.009998725013 48.880613499
0xf242d117bbf97af852980c81957a4ca824688ef24ea7ae8c2aa13000fcb1d43eZap In285012352022-05-19 8:24:361 day 2 hrs ago0x09fca4fc7687f19afe5f2cbedb5352f651001d65 IN  0x663462430834e220851a3e981d0e1199501b84f61,278.850847298096272 MATIC0.009372750
0x889bd9aabf7c92b1194a2ff8cd331ad19f20320cf0a23f15fb6a3c13a7b8760fZap In Token284890062022-05-19 1:04:201 day 9 hrs ago0x8c13861f2bb01331460710a30a195f393c5f7299 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.004535389322 32.042031315
0xb7ca951e9bbf6a380b6c970bba34b6178209f528989bf3a2f774ae47148a997eZap Out284889762022-05-19 1:03:201 day 9 hrs ago0x8c13861f2bb01331460710a30a195f393c5f7299 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.005997555111 30.771999978
0xb6d311ca03418d105a7e5c7843ec52c874070b72d2630d51b8af473933f82fbfZap Out284806512022-05-18 20:07:581 day 14 hrs ago0xc7730bc6776a5165b1ca167fa044a8c41f79473c IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.0062977810130.09663473
0xfc891ee94659ce6511d8d9820da6daf40e9cd258ba83ce1e32cbc2a8ea3def44Zap Out284728712022-05-18 15:25:281 day 19 hrs ago0x227cf8c98f79426be62bd3c6808163790c271679 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.116460884521585.67792747
0xab13c3a6b859491390fb2cc48b56bb80ad31a251bfe568f705df81555ecf602aZap In Token284698132022-05-18 13:27:321 day 21 hrs ago0x421fc99aa295dd2226c1cc544df404c9015ee54f IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.008292689527 39.36322288
0x473e6785a84fa89ada957d8c72a9cecf8e2bce2028bf4aef57cf048c863a24f5Zap Out284618192022-05-18 8:32:332 days 2 hrs ago0xc181e1969ca20a6dd393ae9aad4a3bb4fa50803b IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.0066977724 32.01
0xd7027c6dbf6d0243a56b11ec4e8ea89af21fad9bfc717d910e0ae4410456bb7aZap In284459152022-05-17 22:47:182 days 11 hrs ago0x1093c51d8448dd280be4680289fbde2ea69b81f2 IN  0x663462430834e220851a3e981d0e1199501b84f62 MATIC0.00698143506 35.961198015
0x9476d0bf506fb9aea0e85db7df3cfded04291bbab4d86156d2963d63919b2c83Zap Out284426462022-05-17 20:50:402 days 13 hrs ago0x4de082acb4fa94c87388ea3a8db17a1a0e3e7c0e IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.007742768038 37.000000182
0xf433227d3735e844109ff71d6ee4a0092eeeefb7af886cc30c53a508cb6a6cf9Zap Out284424432022-05-17 20:43:422 days 13 hrs ago0xb55e7287f1e722215a9a113b08f66b6040f2e32f IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.031580156014 150.91925532
0x457ccbf72e524285745bbe53b2eaff59aced4e6ae5e2b190b2f361dddf4cff17Zap Out284350172022-05-17 16:10:382 days 18 hrs ago0x2d26a88980d264cd3eac8a136b82d6fb61983b46 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.010304983569 76.759654151
0x47699b61f283a4cd0be0d704f0afb8f0e901e54b34dd54d6aaf028aae352508bZap In Token284313842022-05-17 13:54:542 days 20 hrs ago0x53a6668330bbc3da3f77e025799a7354c7134d79 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.033451284801 67.673916907
0x1a35c60e8cfff7d9a2e042227f70441a536db5c46123b04248e04290afe9d230Zap Out284280112022-05-17 11:49:442 days 22 hrs ago0xa79a6ce991c9bce8370c0e32a3a2018803d820e4 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.005411703827 30.034652895
0xe741d5f6a9083077db283f7d1735f9b04d594e514cab36ca5420bab21d4141a7Zap In Token284201852022-05-17 7:10:073 days 3 hrs ago0x1a754ed2e6a2d26aacb292e92af372a6000ec6ee IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.006576166411 32.010000005
0x923280b522020e9a8325dd5e68755bf3e8987531729046a72c7e0cb24b69a2a8Zap Out284191592022-05-17 6:32:433 days 4 hrs ago0xc2c0d188f0eb204c299ae35d1db3132779df05f3 IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.004680645709 32.354842945
0xd105cee5e00e3cea192d58774cf7ebf1fcf91c3f2a023e52884983390546676bZap In284056592022-05-16 22:33:123 days 12 hrs ago0x1d91c72a7a7371d0647b452890221d93fcc5cfa0 IN  0x663462430834e220851a3e981d0e1199501b84f64 MATIC0.009372750
0x2625527e4ccb7f740359d8f6590c561f4f301e6c10ce1061729987b1c8336bc2Zap In283973202022-05-16 17:33:403 days 17 hrs ago0xaa0bfa5826d933e2c7e5410a7f5b24e17cb9e169 IN  0x663462430834e220851a3e981d0e1199501b84f60.5 MATIC0.007819770932 41.715679221
0xccf4997c05c68eb9393ae6a9225f7a20c15490cdbbc4b3a30d0b9d4b6428e989Zap Out283708882022-05-16 2:00:414 days 8 hrs ago0xc7730bc6776a5165b1ca167fa044a8c41f79473c IN  0x663462430834e220851a3e981d0e1199501b84f60 MATIC0.00628489301830.035043959
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x90890e76b2d72e5ea80f09d58da9279e34dd8a37b81e9841a29da0888a4565fb285268452022-05-19 23:38:5011 hrs 1 min ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router9 MATIC
0xdded52bfbd198f21edc43f0c113b86d3b82ee84f7952a956f30f1b3b5614cc84285057152022-05-19 11:12:0223 hrs 27 mins ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router0.000000127972022752 MATIC
0xdded52bfbd198f21edc43f0c113b86d3b82ee84f7952a956f30f1b3b5614cc84285057152022-05-19 11:12:0223 hrs 27 mins ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router0.000000127972022751 MATIC
0xdded52bfbd198f21edc43f0c113b86d3b82ee84f7952a956f30f1b3b5614cc84285057152022-05-19 11:12:0223 hrs 27 mins ago QuickSwap: Router 0x663462430834e220851a3e981d0e1199501b84f60.000000255944045503 MATIC
0x5747b4e868848250d76f7d5419c20044261a3ee03cdea711b5947280c04dfead285056952022-05-19 11:11:2223 hrs 28 mins ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router1 MATIC
0x245b3ee926bb36e52d6d6d33b3123177b829519393882e6cfb70319e11818e03285031252022-05-19 9:34:031 day 1 hr ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router26.548854666318217395 MATIC
0xf242d117bbf97af852980c81957a4ca824688ef24ea7ae8c2aa13000fcb1d43e285012352022-05-19 8:24:361 day 2 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router1,278.850847298096272153 MATIC
0xda3f2a3e8ad4f358fc3a337451c768531f15cb65288a02ba89ab1f69d4b9deaa284524802022-05-18 2:43:422 days 7 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router18.314706021436706609 MATIC
0xda3f2a3e8ad4f358fc3a337451c768531f15cb65288a02ba89ab1f69d4b9deaa284524802022-05-18 2:43:422 days 7 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router18.314706021436706608 MATIC
0xda3f2a3e8ad4f358fc3a337451c768531f15cb65288a02ba89ab1f69d4b9deaa284524802022-05-18 2:43:422 days 7 hrs ago QuickSwap: Router 0x663462430834e220851a3e981d0e1199501b84f636.629412042873413217 MATIC
0xd7027c6dbf6d0243a56b11ec4e8ea89af21fad9bfc717d910e0ae4410456bb7a284459152022-05-17 22:47:182 days 11 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router2 MATIC
0x47699b61f283a4cd0be0d704f0afb8f0e901e54b34dd54d6aaf028aae352508b284313842022-05-17 13:54:542 days 20 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router4.722720340968295903 MATIC
0x47699b61f283a4cd0be0d704f0afb8f0e901e54b34dd54d6aaf028aae352508b284313842022-05-17 13:54:542 days 20 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router4.722720340968295903 MATIC
0x47699b61f283a4cd0be0d704f0afb8f0e901e54b34dd54d6aaf028aae352508b284313842022-05-17 13:54:542 days 20 hrs ago QuickSwap: Router 0x663462430834e220851a3e981d0e1199501b84f69.445440681936591806 MATIC
0xd105cee5e00e3cea192d58774cf7ebf1fcf91c3f2a023e52884983390546676b284056592022-05-16 22:33:123 days 12 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router4 MATIC
0x2625527e4ccb7f740359d8f6590c561f4f301e6c10ce1061729987b1c8336bc2283973202022-05-16 17:33:403 days 17 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router0.5 MATIC
0x49e605c0144f6bd7d611b9c07dab75fa239204cff509b4465cac0755ed201433283200252022-05-14 19:52:305 days 14 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router40 MATIC
0x25eac515dec578f29850d40128805378df48e33093c2ba61fb404a5c070d52bd282880792022-05-14 0:50:256 days 9 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router1 MATIC
0x25eac515dec578f29850d40128805378df48e33093c2ba61fb404a5c070d52bd282880792022-05-14 0:50:256 days 9 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router1 MATIC
0x6a9af7c198d633d920ff5db17bb12453ba7c1afc34e1b6c313778ed6b4dd0b93282838542022-05-13 22:20:536 days 12 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router41 MATIC
0x5d95ab2ede77ee01e064146ecc276e474575e16fa68c58a0d9cccad2ec3d9e7f282749462022-05-13 16:54:556 days 17 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router22.638454538944055118 MATIC
0x387ec1179b54bbda5ad3a8919f4ba3c24857b0a761a07be78df8317dd6eaa9fe282664802022-05-13 11:52:386 days 22 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router4.534699632353989732 MATIC
0x4f6bc4e84da727bdf8b3d70c15721eef4a967262b7cb1a64886a2a865ad222eb282404922022-05-12 20:11:257 days 14 hrs ago QuickSwap: Router 0x663462430834e220851a3e981d0e1199501b84f60.087868913669659645 MATIC
0x4f6bc4e84da727bdf8b3d70c15721eef4a967262b7cb1a64886a2a865ad222eb282404922022-05-12 20:11:257 days 14 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router8.925894449805276316 MATIC
0x4f6bc4e84da727bdf8b3d70c15721eef4a967262b7cb1a64886a2a865ad222eb282404922022-05-12 20:11:257 days 14 hrs ago 0x663462430834e220851a3e981d0e1199501b84f6 QuickSwap: Router8.925894449805276316 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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