Contract 0x60daEC2Fc9d2e0de0577A5C708BcaDBA1458A833 1

 

Contract Overview

Rubicon: bathDAI Token
Balance:
0 Ether

EtherValue:
$0.00

Token:
Txn Hash Method
Index
From
To
Value
0x03a5865f171981653b67da6f8a75b3352041cac395318667f71c69de1cc543dfWithdraw137187432022-07-02 23:01:583 hrs 7 mins ago0x22bbe960325e39b8321c908dd280239a1445836b IN  Rubicon: bathDAI Token0 Ether0.0000365537160.001
0x675b520686b54e73dd89f6ef7aad7854d19ecf313e19f9ae32652efe129325eeWithdraw137120812022-07-02 19:23:386 hrs 45 mins ago0xa3b2b995d1a27fe3d3934ae2b0c2eab7c4bc9fd1 IN  Rubicon: bathDAI Token0 Ether0.0000437006570.001
0xb7947c25bbb57df05b68763e398793b8e3e7c4019331defdfe014c974db6814eWithdraw135926832022-07-01 5:24:561 day 20 hrs ago0x520aba3b9dea0a8c92a56b0c523a621f63658ca7 IN  Rubicon: bathDAI Token0 Ether0.0000680276370.001
0xb74a3f8b4c27a15654f92d3665b9b78af1d988979d6a798c5ed39f4b06831a53Withdraw131723652022-06-26 17:08:246 days 9 hrs ago0xd60ad07bfea1046c5c310e0ff552b6f84daad303 IN  Rubicon: bathDAI Token0 Ether0.0003592226740.001
0x492d4aca94f38beae9b09cc1e76599aeb31c2a39af731b5d83f4effaf48e6563Deposit131062492022-06-26 5:41:236 days 20 hrs ago0xe5892c6a6928817e0a7fa73a3e552a95e1365d90 IN  Rubicon: bathDAI Token0 Ether0.0001068385680.001
0x2e21bb4403a5cae3a912415e20e296ec51638f505e8e1a25c97e20912cb90d51Deposit130701222022-06-25 20:57:287 days 5 hrs ago0x29cc2f9c5f050a4391990bc5346c1975da1f04c4 IN  Rubicon: bathDAI Token0 Ether0.0001402806540.001
0x5711a8f5236bd7f6079fd1a9d83f019917532737600a00499a25c3b87509fa5fWithdraw128239562022-06-23 14:33:279 days 11 hrs ago0x378d55a98d1d1a15a6cc628c63451295f317daf9 IN  Rubicon: bathDAI Token0 Ether0.0003982872950.001
0x3d9c891e0df18f11abd3441f47426e34bb9619b7e96a3e1e43c125c883d59084Withdraw123258362022-06-19 9:01:3313 days 17 hrs ago0x29a5406b7bc30576c24e91cd45b3cd1679110fbd IN  Rubicon: bathDAI Token0 Ether0.0001153208620.001
0xd132cca0d687859d5a4f797b7fe4d6c02a03c13721db4177c93346dea8f70f81Withdraw122397152022-06-18 16:22:2514 days 9 hrs ago0xd392e5d8c94bf025a0848ee82d58f947833049d2 IN  Rubicon: bathDAI Token0 Ether0.0001135702270.001
0x650866fab6d9f29eeba0f5b856072889a0269527e06d7b500f8f98a993ef8677Deposit122324532022-06-18 14:09:3014 days 11 hrs ago0x29a5406b7bc30576c24e91cd45b3cd1679110fbd IN  Rubicon: bathDAI Token0 Ether0.0000749907730.001
0x2c360c941965ec504d74564b2456fd7ae6e85a4f329ab65906095339b2d1d8b8Deposit121713842022-06-17 21:39:5715 days 4 hrs ago0xe71da5f8f6e90fa92f794963ba90f5c1cd16a6a6 IN  Rubicon: bathDAI Token0 Ether0.0001353376710.001
0xbfd3e9b0ae01335c8dbaf438334d2c022de949bfbf78fae6c5e45eff7676cab1Deposit120469352022-06-16 15:15:5316 days 10 hrs ago0x62d51fa08b15411d9429133ae5f224abf3867729 IN  Rubicon: bathDAI Token0 Ether0.0003878788620.001
0x35475a81507a1d2869c812e588f2f28989e48711221a18cbb0f11a0ace9c50f8Withdraw119828622022-06-16 2:52:0716 days 23 hrs ago0x9c165e374c8a2699fe198360f332364b3e4abb4a IN  Rubicon: bathDAI Token0 Ether0.0000968191230.001
0x3b4dd670d362c825458dc603357286f1b7d06668855f2d853c98d56a54ac4236Withdraw119826402022-06-16 2:47:2716 days 23 hrs ago0x6389ccec4b3a0d54fe1ff01232789a7079d60cfa IN  Rubicon: bathDAI Token0 Ether0.0000893177020.001
0x6e7f43f54ed32f633249edee3d78a1b0f8900b804254789de6728a66f56d4210Withdraw119821592022-06-16 2:40:5116 days 23 hrs ago0xe42dff0330a0270ad1e15f50f11e37a0e96efe6d IN  Rubicon: bathDAI Token0 Ether0.0000813261220.001
0xf1eb4c111980feeb78c228c43b069109d3274c8866111625a7b1a6dd3827b437Withdraw119816462022-06-16 2:32:0916 days 23 hrs ago0x49f565e0c246aa221135053f7edd1d06daa1472b IN  Rubicon: bathDAI Token0 Ether0.0001271111190.001
0x3c43def5a7909c41d38bd3c42d496df12ce140d885fa2e1600a355271ec6b34bWithdraw119796272022-06-16 2:03:5517 days 5 mins ago0x690044e25427e3e10cfa1141d1a136e0151e6fd1 IN  Rubicon: bathDAI Token0 Ether0.0001006236090.001
0x29346f5d9a80087bcba0753b052f8105d734bf3834fd98cb330192275dc24227Withdraw119794612022-06-16 2:01:2017 days 7 mins ago0x65b61210d98d9fe54e17490112667b88d2612abb IN  Rubicon: bathDAI Token0 Ether0.0001061029070.001
0x10faf07a20939c14e1e61d27f5d7b171c97dfe7db8df8db372331f9f06e30ef4Withdraw119790232022-06-16 1:56:5717 days 12 mins ago0x23a6321355786feb30febb00747119026518441a IN  Rubicon: bathDAI Token0 Ether0.0001250402010.001
0x92e4269c056d07a3857f5c72a3bff94251c3e661c5016b97dd4dcaec6914f0c5Withdraw119785442022-06-16 1:49:2617 days 19 mins ago0xbc95a312093c8ad82006dd45065a5a011b5fa2e7 IN  Rubicon: bathDAI Token0 Ether0.0001180807150.001
0x8deacc1c6819d68efcb9b61aaa08ad2d64958cff64f0a1830739376c2fdd05b3Withdraw119782442022-06-16 1:45:0717 days 23 mins ago0x3150ec3d77f0c3c083a6662ebfebf1229f5192f3 IN  Rubicon: bathDAI Token0 Ether0.0001207867120.001
0x3d6cc11fcb69c9d752bd8791c131d991fccc09d50771efadace28225ad77a875Withdraw119780952022-06-16 1:42:1317 days 26 mins ago0x729a17324937fbb3f6c5206c83fa1d40a644a03a IN  Rubicon: bathDAI Token0 Ether0.0001719391340.001
0xdfa3fcd9f60641b739767175b66124bfdfa5cd1927607e3c53f46a054ef3e395Withdraw119778522022-06-16 1:39:0717 days 29 mins ago0x5508af73f10a0bd8c10d941dcf94b221095b840b IN  Rubicon: bathDAI Token0 Ether0.0001463159940.001
0x3ff546730c6075bab918ff1d11c1881385f3f15ef76beca1d631eb189399fe95Withdraw119777092022-06-16 1:37:0417 days 32 mins ago0x822d9d9de9e7fde9f80b639d2c47e835bb5b05f3 IN  Rubicon: bathDAI Token0 Ether0.0001502115690.001
0x94aa8935a3c743f528ae4af3c16bae0068d995343ffd79eb8dca4b9458167bf1Withdraw119775372022-06-16 1:34:0717 days 34 mins ago0xb0d773f79f47d18ac3df33386610514c2aa1f638 IN  Rubicon: bathDAI Token0 Ether0.0001206478660.001
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0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Maker: DAI Stablecoin0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: Bath Pair Rubicon: bathDAI Token0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Maker: DAI Stablecoin0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Rubicon: Rubicon Market0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Rubicon: Bath House0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: Bath Pair Rubicon: bathDAI Token0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Maker: DAI Stablecoin0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: Bath Pair Rubicon: bathDAI Token0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Maker: DAI Stablecoin0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Rubicon: Rubicon Market0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Rubicon: Bath House0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: Bath Pair Rubicon: bathDAI Token0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Maker: DAI Stablecoin0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: Bath Pair Rubicon: bathDAI Token0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Maker: DAI Stablecoin0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Rubicon: Rubicon Market0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Rubicon: Bath House0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: Bath Pair Rubicon: bathDAI Token0 Ether
0x6743270106f495a4fc0dce364113c8769cb023349fbcbcdf9baf3515318ac96d137238242022-07-03 1:43:2725 mins ago Rubicon: bathDAI Token Maker: DAI Stablecoin0 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

[{"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":false,"internalType":"address","name":"currentImplementation","type":"address"}],"name":"Implementation","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://c956bcbbc04ec373182530ed2d1b401083114462fb7c5aa0f6042a46022b8150
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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