Contract 0x7571cc9895d8e997853b1e0a1521ebd8481aa186 4

 
Txn Hash Method
Index
From
To
Value
0x5604297707d5e294d8f6a3097cb821711c78bb2f1ae4990902fe94d7ee6a2db5Transfer260897702022-09-28 20:38:151 hr 12 mins ago0x76c3e7e40c91c59a1e8d3e388a62aadba837d757 IN  Rubicon: bathWBTC Token0 Ether0.0000485390920.00100155
0xfe03722340850ab135bffa2b20ab49bb80bdf288339291a6ebc4a29360440adbGet All Bonus To...260882912022-09-28 20:26:561 hr 23 mins ago0x02eff2310027d18fc8d3fa9b4181dad9186f5a28 IN  Rubicon: bathWBTC Token0 Ether0.0000392998280.00100155
0x70389ef2e0df1865a166a94008fb4bc15e9d056f21c90bbe5bb12134d476e6f9Get All Bonus To...260711382022-09-28 18:28:143 hrs 22 mins ago0xd61015823b60a7c6e156c887a72467a8170259d2 IN  Rubicon: bathWBTC Token0 Ether0.0001254870280.00100155
0xd4f60fcf9749d180a3bfbe0f08b28955c88b1d39d444dd2e3d1c9ffca3b93f35Withdraw259735082022-09-28 10:38:2411 hrs 11 mins ago0xf3b7b6065dd815fa4efbed65b41e27b743426000 IN  Rubicon: bathWBTC Token0 Ether0.0000392447790.0011
0x4d891d5014f8f01bcb5fa67e40f153726828e7de9b2e753f1faafa783ba0e0cfDeposit259186812022-09-28 6:45:4815 hrs 4 mins ago0xf3b7b6065dd815fa4efbed65b41e27b743426000 IN  Rubicon: bathWBTC Token0 Ether0.0000359128950.0011
0x32eb703f6bc0856189dbf1ba3a4625055c3481e220bb7fded46e706c2f64e6faGet All Bonus To...258326622022-09-27 21:01:351 day 48 mins ago0x619a82ea458505b0823d47ff9d347f1e7e2f2758 IN  Rubicon: bathWBTC Token0 Ether0.0000377353490.00100155
0x24710625d1cf0a896b360cdb887ddeb3d47c22658414daef69e4de8ea4d06296Get All Bonus To...258242612022-09-27 19:51:251 day 1 hr ago0xf2646da8283f02cb1012a9b2f87561c20824b475 IN  Rubicon: bathWBTC Token0 Ether0.000043500590.0013
0x9a6c5643fd5d596051e4acaa9860285c2b76fe1ab412f9006cf8075e18ab487eDeposit256311852022-09-26 20:59:482 days 50 mins ago0xd3f85ade70adf48ed17c8cb182b8b1aff542e51f IN  Rubicon: bathWBTC Token0 Ether0.0000559153740.00100155
0x7a4b173d1f8e23297fe77a2afd79c80c9cbfa1af943916258da6f396cdbcabd3Get All Bonus To...256138352022-09-26 18:00:362 days 3 hrs ago0x47a0d24b34889277010026892b7612143d16bf13 IN  Rubicon: bathWBTC Token0 Ether0.0001210799110.00100155
0x79c5034e3ce8de4d78440c182362cbdb957baa2652881927956fd3c3c2f24f8cGet All Bonus To...255927022022-09-26 15:23:482 days 6 hrs ago0xb4a957fedc75650d027a83ed992fac013c52dce7 IN  Rubicon: bathWBTC Token0 Ether0.0000891836840.00100155
0x5508b63565c6adbb0ace4a64bd5e967b38bb23622f80fbb6de181e6f8ddf2e28Withdraw255926312022-09-26 15:23:332 days 6 hrs ago0xb4a957fedc75650d027a83ed992fac013c52dce7 IN  Rubicon: bathWBTC Token0 Ether0.0000835867110.00100155
0x234d3e65ebfe5acc89ab2f188116ba6c10519f02b0b534814a7333b55c853268Get All Bonus To...255561952022-09-26 12:44:162 days 9 hrs ago0xa89fd73f8f01f220939aacfe5e818a3e4070b8fb IN  Rubicon: bathWBTC Token0 Ether0.0000196648360.00100155
0x89c46873570557f08739f3638aa3d79ca00f9efe3a6fcdd0ed833c226d6a0306Withdraw255519962022-09-26 12:26:432 days 9 hrs ago0xff4f7b726ee86f810531d2842b3bdd8a512db594 IN  Rubicon: bathWBTC Token0 Ether0.0000229903360.00100155
0x797913abaadf86a45434c4e7357e814d5211d5feae8bd80131d37abc51090b68Get All Bonus To...255519202022-09-26 12:26:132 days 9 hrs ago0xff4f7b726ee86f810531d2842b3bdd8a512db594 IN  Rubicon: bathWBTC Token0 Ether0.0000219009870.00100155
0x599ee06039989270c580a47c965d70ddab429b2d24411589b7a860287ee6f5baGet All Bonus To...254472932022-09-26 3:07:082 days 18 hrs ago0xfb9572dfccac0791e0ac899455132836a437afe9 IN  Rubicon: bathWBTC Token0 Ether0.0000189344680.00100155
0x8cdd4b96030b48606667a6d3bd251ef027607d2da74b7b23a8ad3db5f9fa2aa6Withdraw254069572022-09-25 21:56:272 days 23 hrs ago0xeefd6537adbda7b1a9da3f6607dda26b048489c2 IN  Rubicon: bathWBTC Token0 Ether0.0000319386360.00100155
0xf0fdf95b3189fcc5dcbc511dc8327f35a5db3c73c2405f86d4e848bf997add81Deposit254062582022-09-25 21:48:333 days 1 min ago0xeefd6537adbda7b1a9da3f6607dda26b048489c2 IN  Rubicon: bathWBTC Token0 Ether0.000052924550.00100155
0xf00e61a408f5e443ec1a4c7b66c77bb22e6f6e4a2f1e52fe5e7ba995a604f34aGet All Bonus To...254010722022-09-25 21:04:183 days 45 mins ago0x93c20947353996eb928af059c07546814a7f88c6 IN  Rubicon: bathWBTC Token0 Ether0.0000394987360.00100155
0x259bd899b1fdacead2a81a230aeccbd5dd300bc10a0f7e2bf14335d54440ec43Get All Bonus To...253913692022-09-25 19:24:513 days 2 hrs ago0x619a82ea458505b0823d47ff9d347f1e7e2f2758 IN  Rubicon: bathWBTC Token0 Ether0.0000215986080.00100155
0xe378f6572de6cac0817f695a0706e19a6704c43ce48bb9b7039ddbc8307ada78Withdraw251927892022-09-24 22:34:123 days 23 hrs ago0xbc7c182840eb7ee42b4fd6a8add17f2045ffdb15 IN  Rubicon: bathWBTC Token0 Ether0.0000113180860.00100155
0xe6df2827003d7899d5ec0fcaa02fccd881dcf9affc8186ecf2e6b8154dedfafaGet All Bonus To...251926842022-09-24 22:33:113 days 23 hrs ago0xbc7c182840eb7ee42b4fd6a8add17f2045ffdb15 IN  Rubicon: bathWBTC Token0 Ether0.0000124521810.00100155
0xecf07142da89385f05087937f5627f5a1740940e088491dc11d53a45f9674db1Get All Bonus To...251757112022-09-24 19:42:474 days 2 hrs ago0x619a82ea458505b0823d47ff9d347f1e7e2f2758 IN  Rubicon: bathWBTC Token0 Ether0.0000118302080.00100155
0x67ae9b9a1a78b1a3f9f9035f4d195ba97472ac7ea7d4b7a2a729867e2c147882Get All Bonus To...251730782022-09-24 19:16:444 days 2 hrs ago0x115d0d8822efc9607c52b04628098b48970b993b IN  Rubicon: bathWBTC Token0 Ether0.0000153353050.00100155
0xb7f5dadef1a4aedfa6cbcd5a9b3ca1255b08b909a908aa5378b553878ff93245Deposit250975622022-09-24 11:38:244 days 10 hrs ago0xf774b2c6b654976eeb820b0142c3f3e9e3c215c8 IN  Rubicon: bathWBTC Token0 Ether0.000016896640.00100155
0x91a4f5e14df588ec87d242cec8f0cdf6cf9e19e99c292356c7fe3b57c7fa86bbGet All Bonus To...249977432022-09-24 1:04:264 days 20 hrs ago0xff4f7b726ee86f810531d2842b3bdd8a512db594 IN  Rubicon: bathWBTC Token0 Ether0.0000156975210.00100155
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0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Wrapped BTC: WBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token 0xf12734d297232c566e1db790f5a1237132a688770 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: Bath Pair Rubicon: bathWBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Wrapped BTC: WBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Rubicon: Rubicon Market0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Rubicon: Bath House0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token 0xf12734d297232c566e1db790f5a1237132a688770 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: Bath Pair Rubicon: bathWBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Wrapped BTC: WBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token 0xf12734d297232c566e1db790f5a1237132a688770 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: Bath Pair Rubicon: bathWBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Wrapped BTC: WBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Rubicon: Rubicon Market0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Rubicon: Bath House0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token 0xf12734d297232c566e1db790f5a1237132a688770 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: Bath Pair Rubicon: bathWBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Wrapped BTC: WBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token 0xf12734d297232c566e1db790f5a1237132a688770 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: Bath Pair Rubicon: bathWBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Wrapped BTC: WBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Rubicon: Rubicon Market0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Rubicon: Bath House0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token 0xf12734d297232c566e1db790f5a1237132a688770 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: Bath Pair Rubicon: bathWBTC Token0 Ether
0x3868e70a55adabb8a5ef913e14920e4a3ee8a60bceefe31c93643bf5f34d4936260021442022-09-28 12:59:488 hrs 50 mins ago Rubicon: bathWBTC Token Wrapped BTC: WBTC Token0 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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