Contract 0xe0e112e8f33d3f437D1F895cbb1A456836125952 1

 

Contract Overview

Rubicon: bathUSDC Token
Balance:
0 Ether

EtherValue:
$0.00

Token:
Txn Hash Method
Index
From
To
Value
0x5da09fb8015bafa485df4fa4eec4e826c8277d7bdac24449768b0294ac4ac70dDeposit138447642022-07-04 21:07:363 hrs 14 mins ago0x040ca5db945d561305ec64c74791b4349fc9d312 IN  Rubicon: bathUSDC Token0 Ether0.0000830040550.001
0x4cb23dacfa4af7f2d423af624316aee4a198cd5fe31bdad5975341f1c8eb259cDeposit138419722022-07-04 19:37:364 hrs 44 mins ago0x8ce14044db30893212c37dbbd845646261aeae41 IN  Rubicon: bathUSDC Token0 Ether0.000044947740.001
0xe9c29716c2d23f7f4163c153c151d35f8ad1c2b6961b3e40723e1e7e446e55d7Deposit138393842022-07-04 18:27:315 hrs 54 mins ago0x3b092e26f77cdaff006e41533f55444485bfaa74 IN  Rubicon: bathUSDC Token0 Ether0.000114057730.001
0xf989ebbf912ed0e33959d0fbc263e7856c51c13bc75074799428f3639051b9fdWithdraw138373732022-07-04 17:45:496 hrs 36 mins ago0xac4511946be684174881cb6e401b70a8827971c1 IN  Rubicon: bathUSDC Token0 Ether0.0001038333340.001
0x576b6b1a610fee07735b79519c369b067229a3967439eee8c3fea5b9ef1cd768Deposit138368032022-07-04 17:36:426 hrs 45 mins ago0xd274c4453c78e6e5016398d5ce30cc9ce1b6df26 IN  Rubicon: bathUSDC Token0 Ether0.0000838324390.001
0xb82616f2b0a495fb69326e512533db847abc3159700d3b56185f4d7f6fb75f39Deposit138365372022-07-04 17:31:426 hrs 50 mins ago0xbfe30abdec1c649ac8b7fc4b79d7c844722430d8 IN  Rubicon: bathUSDC Token0 Ether0.0001104022390.001
0x3bef83dae9904e1f5df062490cfb87569bc21601fb9961a3afd24e292ae2e1eaDeposit138097132022-07-04 11:14:2813 hrs 7 mins ago0xb92519f625a326d64cce40ca65bab0c409b453cb IN  Rubicon: bathUSDC Token0 Ether0.00007109080.001
0x390d8d0fbca2667c16e1ab30a19ac245ce12d2bb3657df57e3c1b753881397c6Deposit138066012022-07-04 10:09:0814 hrs 12 mins ago0xf845e1084f80163c4f2019192dcc7bdb07f96f64 IN  Rubicon: bathUSDC Token0 Ether0.0000410738570.001
0x51b8fc265505d11b2e77e31eec5bd821694ad8938d7702aa3d77abc6ffc641ffDeposit137957202022-07-04 6:34:1017 hrs 47 mins ago0xb4d00788f75f27b85285b3af21bdc16b3336d91e IN  Rubicon: bathUSDC Token0 Ether0.000034201210.001
0x73886179ec83d22673293303a8e1807516bcebe27b5ce7b79f3caa30312cfe9bDeposit137951892022-07-04 6:19:4618 hrs 2 mins ago0xc28466bbd0f2f519829feaeba61470a381c5d07b IN  Rubicon: bathUSDC Token0 Ether0.0000654341980.001
0x211d97434689a0c2312f523dda6a2c24bc3f0d975eedbc87e792d35961a461ffDeposit137946352022-07-04 6:08:0518 hrs 13 mins ago0xfc427d3112ccef24dce7fda59238aceca2b8105a IN  Rubicon: bathUSDC Token0 Ether0.0000547631660.001
0xcb63aaddb8cbb22885b4fce4729b662d0bcc40ca66fb4c73e8835ed25a0ff403Deposit137945312022-07-04 6:05:5118 hrs 15 mins ago0xfc427d3112ccef24dce7fda59238aceca2b8105a IN  Rubicon: bathUSDC Token0 Ether0.0000523686590.001
0x89552232bd627f4e49e2c10e74f17a15b5c3a53b226179c3bafa5bdab9420771Deposit137940352022-07-04 5:52:2818 hrs 29 mins ago0x67f8f7fba5eac5c6918d88e2127aadd8be026983 IN  Rubicon: bathUSDC Token0 Ether0.0000404288560.001
0xaf950d7bc98d584f49a5f5064877ffce42ed20477622ba665d32a21c344a9f33Deposit137855712022-07-04 2:07:1022 hrs 14 mins ago0xdbf219428929742180de096fce8bd1a4827c5885 IN  Rubicon: bathUSDC Token0 Ether0.0000620446520.001
0xbd0f14bac9aa3d5923839417d1cc62b74775435cd155a8f8b4f39f8710d4fa0aDeposit137719122022-07-03 20:13:001 day 4 hrs ago0xdc50504c3304e2a050ef083ed947aafcc75cb579 IN  Rubicon: bathUSDC Token0 Ether0.0001801323850.001
0xe6c72bd98e0ef38357595161a07f464648b695f2d35351201eae4d36eb958cabDeposit137652362022-07-03 17:01:251 day 7 hrs ago0x014433dd77b46ab33754e796cea61d2d79d0fd0a IN  Rubicon: bathUSDC Token0 Ether0.000132444240.001
0xafa80eaeb338efa12050608f84fb8f8e23a48a76360938c08f5b7c6d4333d5edDeposit137562532022-07-03 14:48:051 day 9 hrs ago0x7546dfd9e433026c0b85ccb1ad50b63bd0edb3d2 IN  Rubicon: bathUSDC Token0 Ether0.0000836170080.001
0x3fb84dba043c9d2538a13f043815cc38154932c89179a1460f4d6e5288a60569Withdraw137532612022-07-03 13:31:191 day 10 hrs ago0xe22f1ed1b51e83a27f5736c9b84c9e66a26a4f71 IN  Rubicon: bathUSDC Token0 Ether0.0000720316390.001
0x4f6b3d0550afd9aa79b3aa83de8a30a6e5c1cab7ffe5ce7005d4e6dab263532eDeposit137462762022-07-03 10:16:171 day 14 hrs ago0x068ee6348428c96b886eaa98cf605532fbc4a1e2 IN  Rubicon: bathUSDC Token0 Ether0.0000427059780.001
0x709e9e8aac53761397cbef4fb5fad44512158ae766ff3e039cfc46afa28432f8Withdraw137387832022-07-03 6:48:251 day 17 hrs ago0xdea144b723417f55197d6a4f220aa077626d6923 IN  Rubicon: bathUSDC Token0 Ether0.0000575629780.001
0x6495fc8428f692b8229c4e967eb7949bf0a361ae34219465ff453402ecdd7dedDeposit137384672022-07-03 6:38:481 day 17 hrs ago0x9dbdeae32a009ded4e82524dcf5b5e1d3ce1ec94 IN  Rubicon: bathUSDC Token0 Ether0.0000210163150.001
0xf9f4111bb40ef0a434e589a04ec3d2b69717ae8774eba19b3784cacf87ab7f2cWithdraw137188282022-07-02 23:05:182 days 1 hr ago 0x3ecbd327432a1418eed49c7e281b45f4d31a047a IN  Rubicon: bathUSDC Token0 Ether0.0000258888180.001
0x016e69830417761f157dc58e9d075afd85912ab18f97efa6548644ee36fc5652Withdraw137094712022-07-02 18:27:362 days 5 hrs ago0x115d0d8822efc9607c52b04628098b48970b993b IN  Rubicon: bathUSDC Token0 Ether0.0000881288470.001
0x10319f761b69bece01028831ad1e136c036314128aecda068dab20c84ceca103Withdraw136950482022-07-02 12:33:272 days 11 hrs ago0xac6c89999e9ccf92f89d17c272985eb3cc81c25c IN  Rubicon: bathUSDC Token0 Ether0.0000453041320.001
0x7428bc9f522b210a5726143eb159549e881e1bfceb6f2161cd65c218813be95dDeposit136950212022-07-02 12:32:512 days 11 hrs ago0xac6c89999e9ccf92f89d17c272985eb3cc81c25c IN  Rubicon: bathUSDC Token0 Ether0.0000388412340.001
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Latest 25 internal transaction
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0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x7f5c764cbc14f9669b88837ca1490cca17c316070 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: Bath Pair Rubicon: bathUSDC Token0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x7f5c764cbc14f9669b88837ca1490cca17c316070 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token Rubicon: Rubicon Market0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token Rubicon: Bath House0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: Bath Pair Rubicon: bathUSDC Token0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x7f5c764cbc14f9669b88837ca1490cca17c316070 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: Bath Pair Rubicon: bathUSDC Token0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x7f5c764cbc14f9669b88837ca1490cca17c316070 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token Rubicon: Rubicon Market0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token Rubicon: Bath House0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: Bath Pair Rubicon: bathUSDC Token0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x7f5c764cbc14f9669b88837ca1490cca17c316070 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: Bath Pair Rubicon: bathUSDC Token0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x7f5c764cbc14f9669b88837ca1490cca17c316070 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token Rubicon: Rubicon Market0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token Rubicon: Bath House0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: Bath Pair Rubicon: bathUSDC Token0 Ether
0xc472c2407220fa379430854c3a11c8207189b33bba642c3a36ef63ab96d1138d138545922022-07-05 0:18:113 mins ago Rubicon: bathUSDC Token 0x7f5c764cbc14f9669b88837ca1490cca17c316070 Ether
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x2F536756636ABf29e860717a10867860802AECe7

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 1 runs

Other Settings:
default evmVersion, GNU GPLv3 license
/**
 *Submitted for verification at optimistic.etherscan.io on 2021-11-23
*/

pragma solidity >=0.6.0 <0.8.0;


// SPDX-License-Identifier: MIT
/**
 * @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 OVMProxy {
    /**
     * @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
        (bool success, bytes memory returndata) = implementation.delegatecall(
            msg.data
        );

        if (success) {
            assembly {
                return(add(returndata, 0x20), mload(returndata))
            }
        } else {
            assembly {
                revert(add(returndata, 0x20), mload(returndata))
            }
        }
    }

    /**
     * @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 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 contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 *
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is OVMProxy {
    /**
     * @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)
        );
        _setImplementation(_logic);
        if (_data.length > 0) {
            Address.functionDelegateCall(_logic, _data);
        }
    }

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

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

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

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

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

        bytes32 slot = _IMPLEMENTATION_SLOT;

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

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

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

    /**
     * @dev Emitted when the admin calls implementation()
     */
    event Implementation(address currentImplementation);

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

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

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

    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation()
        external
        ifAdmin
        returns (address implementation_)
    {
        implementation_ = _implementation();
        emit 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 {
        require(
            newAdmin != address(0),
            "TransparentUpgradeableProxy: new admin is the zero address"
        );
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

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

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data)
        external
        payable
        virtual
        ifAdmin
    {
        _upgradeTo(newImplementation);
        Address.functionDelegateCall(newImplementation, data);
    }

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

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

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

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

Contract Security Audit

Contract ABI

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://c956bcbbc04ec373182530ed2d1b401083114462fb7c5aa0f6042a46022b8150
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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