Contract 0xB0bE5d911E3BD4Ee2A8706cF1fAc8d767A550497 1

 

Contract Overview

Balance:
0 Ether

EtherValue:
$0.00

Token:
Txn Hash Method
Index
From
To
Value
0xc9b336d93317dfafcfd24005a173e89620b4ca3dd1b31490b05c188f481ea192Deposit138447242022-07-04 21:05:053 hrs 25 mins ago0x040ca5db945d561305ec64c74791b4349fc9d312 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.000083493190.001
0xd7c8a8eed10192f9c801f17995a26bcbcc0ccdeb373139c0b56b43ffff22fbaeWithdraw137543742022-07-03 13:56:461 day 10 hrs ago0xceb4365754e7b12b4a142f08e4b6bb9aee2abd11 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000566625390.001
0x8f42b1506667b38b1ef623f73a532020452a3a1553411f7eafe4eafa5195044dWithdraw137458352022-07-03 10:01:551 day 14 hrs ago0xe46369cccb2de61c52fd67d86157e2cd956d052b IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000241168630.001
0x588eea474081d1ec976473f41e4cfcee20c8d6551a6a33fed0b04e08f3fa98caWithdraw137417982022-07-03 8:19:541 day 16 hrs ago0x6e62c1e13f9ee8de4deef2e80bc152a9676b03c1 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000403722210.001
0xc10a5507e5e5c95bc534d34f0b9083cd0301c7adfd9bf314d2679b4adacd87cdWithdraw137231042022-07-03 1:24:551 day 23 hrs ago0x29154a87112707f6fdd2bd67faffffe97a768199 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000214857540.001
0xbc113174874781cc257d05f147d1f150260fd9b28a547d9da207d953bc517711Withdraw137188492022-07-02 23:06:192 days 1 hr ago 0x3ecbd327432a1418eed49c7e281b45f4d31a047a IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000225624360.001
0x9a24d417e8ff661905a293bcbf2907da91cdfbfd18fa44bfba87aefd5bf906f0Deposit136875102022-07-02 9:31:182 days 14 hrs ago0x2df2de1487adf84e9ad3a70300fcf7ddf50acf53 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000405142790.001
0xcb35b9fe7e57c9b1751561f7e8ef8fd1c639789eff082c3b038b5780df54436dDeposit136868022022-07-02 9:25:552 days 15 hrs ago0xbec18cfe334c7828848e4c686417bb297f0137cb IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000321372720.001
0x4d526d2970d6d4de2bfca6511a7cce064766616a1055de28ca01f6806e5d1235Deposit136863982022-07-02 9:22:022 days 15 hrs ago0xa875652c2b56b0783f9eaba1356c74a070dc4c60 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000347298450.001
0x373300608c1dfb935e913ae87f305dbce3214ddefba0035d5387e3e33d0f1256Deposit136861792022-07-02 9:15:262 days 15 hrs ago0x3e92f732ace6c88fea6f08da9be1c4e95ebad470 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000358518890.001
0x633994926c48122e6639c230e801e964d4c75c807a88e9a253c1588855c760fbDeposit136048192022-07-01 7:55:293 days 16 hrs ago0xc2c321575392e05ca99191c261d8b52ff4b715e6 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000489109190.001
0x4f7874d27e0bbce418d7a091f6a3e9a3d7de60eed5fa70501835ce0771549446Withdraw135844402022-07-01 3:14:083 days 21 hrs ago0xea04a9fe2cef51b504e7da8cf1b859454ae27030 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000914923350.001
0xd0b11bdbafc033f9c3da95de545c1e2d6bb75b0c62c617a329d5797894d94ecdWithdraw135719092022-06-30 23:55:364 days 34 mins ago0x6772525614ae3e69aea8bf9a4c2fa54d95a81ebd IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0004317279940.001
0x6f3cc4256646115664f77bb76d97efc6a7e72a0ff9403d87e4ed0b5397212cf4Withdraw135703292022-06-30 23:48:274 days 41 mins ago0xa7f47d14f781c3768ef69060ee458b711650a42c IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0002449385130.001
0x55876dbbfda7fdb421ecb4b5fb35f8796dda6914ba7fefef5b2b41e8046c0cd1Deposit135266972022-06-30 10:28:334 days 14 hrs ago0x6e62c1e13f9ee8de4deef2e80bc152a9676b03c1 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001571439430.001
0x79f580bb92bf8adfbf8a30d36e174871a2af3788c3bedf5de2a3ad41a2d38576Deposit134913982022-06-29 23:06:405 days 1 hr ago0xe46369cccb2de61c52fd67d86157e2cd956d052b IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001786841430.001
0x76c2ed35d2814f02fa33b7e3ae85a5f25a92597e21c34e3012901fe7812e08cbWithdraw134578032022-06-29 12:45:215 days 11 hrs ago0xcd12d92bc5e76b6ee579472241e16f60a1cd18e2 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001376645320.001
0x2b8fba3497a61eddc0e5e58aa2086684ee2d85e17dc476052735180b8324b158Deposit134552112022-06-29 12:08:405 days 12 hrs ago0xbd5f0898854cb50874988304f198e44c945ce031 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001260836460.001
0xf812bf0adccc6a334cdafb081b531fafeeb840ca43545ae17d9210738231b0eeDeposit134520542022-06-29 11:22:515 days 13 hrs ago0x75f1694a994c44e714bad6916ef9e223f288364e IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001010139240.001
0x7fcc74e40bf14ce1157f981b97e50168cc3e5578badeaaa8bcbae19d4391c77aWithdraw133999972022-06-28 17:22:486 days 7 hrs ago0x3204ac6f848e05557c6c7876e09059882e07962f IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0003248498640.001
0xfe311896d348ea83071ec28165f4f3c62e5032994f9de703f8fbd5ebaedbe0c9Deposit133952192022-06-28 15:47:406 days 8 hrs ago0xb5dc5bf5b0a20f5a89afa5b5bded05ccd780a0a1 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0002031498840.001
0x9ceed03b77f8c1f51ef3fdbc11059d636e30852305fa2cc9ef654663ce1f2582Deposit132477292022-06-27 7:51:557 days 16 hrs ago0x3b092e26f77cdaff006e41533f55444485bfaa74 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0000593732890.001
0x24d362ec3d4740fdb83b659ef3209fa94b045ca36037bce32db91b1e5fe14f48Withdraw132200032022-06-27 3:37:267 days 20 hrs ago0x33ed55a66fe19de5987a8f166fb1eb070170adac IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001426151850.001
0x84923855656ad033da70f17dede1114fae6c77728533b03dc0285cee2f2136b4Withdraw131633942022-06-26 15:05:138 days 9 hrs ago0x35a0173dd08bcab574dc17a4bc5fed926c0e135d IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001195366380.001
0xf6e34fa4313bc0d170ca1c7d7919ffb9cbac3754d63ee931df0122934a778361Deposit130651902022-06-25 19:15:159 days 5 hrs ago0xea04a9fe2cef51b504e7da8cf1b859454ae27030 IN  0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether0.0001329543790.001
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Latest 25 internal transaction
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0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497Wrapped Ether0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago Rubicon: Bath Pair 0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497Wrapped Ether0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 Rubicon: Rubicon Market0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 Rubicon: Bath House0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago Rubicon: Bath Pair 0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497Wrapped Ether0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago Rubicon: Bath Pair 0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497Wrapped Ether0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 Rubicon: Rubicon Market0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 Rubicon: Bath House0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago Rubicon: Bath Pair 0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497Wrapped Ether0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago Rubicon: Bath Pair 0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497Wrapped Ether0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 Rubicon: Rubicon Market0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 Rubicon: Bath House0 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497 0x4f06912118dd95da06b97eed80ba593b9e0329f30 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago Rubicon: Bath Pair 0xb0be5d911e3bd4ee2a8706cf1fac8d767a5504970 Ether
0x90625c1194b775ea77ceb3377dba4d4976012861c1f243ba2b092561cd8b49b8138541962022-07-05 0:13:2816 mins ago 0xb0be5d911e3bd4ee2a8706cf1fac8d767a550497Wrapped Ether0 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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