Contract 0xbc9572bd927251717b254088bf5ca01ec7237a79 3

Contract Overview

Balance:
0 DEV
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x654db8c6c2db5b0c60c93ed1fdae68450b75f63da91f3301b75733f02e84828aBorrow40857772023-04-05 14:13:0053 days 14 hrs ago0xb967688619d045b4feb7134ab9a72e66bb900f11 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.00106677675
0xb0026ebfc3da51f3f4f41a6596a37c049e48f87bb96b5907eaef654f37ce1c27Borrow40857762023-04-05 14:12:4853 days 14 hrs ago0xb967688619d045b4feb7134ab9a72e66bb900f11 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.001130315875
0x7b06d337110097d21c06a3d999394294a87c65894b568e8b69311ac9795367e1Repay Borrow35360752023-01-12 14:29:18136 days 14 hrs ago0xf49374e87e6939a6be52ba006505d1d46116963c IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.000504405
0xcb41c303a0f31438b0a5941073c520ff91a410d81c7f31a9bbba32f334a5cfabRepay Borrow35322162023-01-11 23:34:48137 days 5 hrs ago0x5e2467f1733876db86eaeb05d24302e70d6b954d IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.000320025
0x953109466e8c5ecb3190edc2ac17c5fcd1757c0124a67318ba6f68fc8284b2f8Borrow35288622023-01-11 10:31:30137 days 18 hrs ago0x0a667b28cbd5c907d4990a4a5d6860e835173c1c IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0027107525
0x8b2238941c195178bfea98d13fc864545329831e108bd3d740ee6e1c8f4c3fa8Repay Borrow35236132023-01-10 14:17:00138 days 14 hrs ago0xc62d565b23503d043434ad6bb5b886b30c954c51 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0003969025
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0x5af32a954cc8426d1362e873101500de570397544561f551113f0b408a31f598Repay Borrow35225252023-01-10 10:00:00138 days 19 hrs ago0x4ac1cc742e197efb6594f7ee8c1b156619594de5 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089025
0x5ae798adc300e106631a842d5a72f1df9ad026962e6090c749f689ae38b7fd1bBorrow35225242023-01-10 9:59:36138 days 19 hrs ago0x4ac1cc742e197efb6594f7ee8c1b156619594de5 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0036657725
0x00756d2c87e7a6b581e6811fdd9bb4fe2997ee97c7226777a5cf4032add7a98aRepay Borrow35222472023-01-10 8:57:06138 days 20 hrs ago0xed81a93049ec89a627426b4e5a81c1afcb674fb8 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0003969025
0xb5ccb55f3e767afd153530817244b70594d84605f78ab481f992cbc440a035dcRepay Borrow35221272023-01-10 8:30:06138 days 20 hrs ago0xd58175e369c862ecf18c9d81446e307f38e35499 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089325
0x0f5b3c0341590900ed465f1679b263d5bae7b73e5a9258a90d142b8a1def95ccRepay Borrow35218552023-01-10 7:22:30138 days 21 hrs ago0x31f43cbf4b5c1eebf1e4f5cfecb351195083eca8 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0003969025
0x3e1b5ea04e8645885be61730383c1145d4c0e0667f986fe2af2c055b3d926ad1Repay Borrow35218122023-01-10 7:13:06138 days 21 hrs ago0xc2f607b2f12b0e67ea00a787ab6ecea7d5cce62b IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0003969025
0x8c86dafc767e082075a7631c08faef5925d049ddc4fab6ff586e73932297b6d9Repay Borrow35211672023-01-10 4:39:30139 days 22 mins ago0xc5b686bf8c6a070da19753919fe68af892830769 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089025
0x6c49bd1ded2fa867362629f5b25e18d840f33316c493cc1181ecae6d221185eeRepay Borrow35198912023-01-09 23:38:24139 days 5 hrs ago0x4a39864bf2a1333d3b58fd7d62dfdcaffadd6aae IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.00046424
0xd940b00573b17902318f1d58b7a7e83f4c09a7c981c57c893d4488d8991620f3Repay Borrow35198352023-01-09 23:25:48139 days 5 hrs ago0x3720c21ec5950872cac96b83c5d702a7e6a1703e IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0003969025
0xb236f85b1564ebf0e2849e177ebbb5d96c8b846e88462694c0352bc0f040203aRepay Borrow35189092023-01-09 19:48:00139 days 9 hrs ago0x36bbdebf24de87a3336bfe5e14516e7ed19e66f5 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0003969025
0x7317aa85370338c9bcb2000464db10cf4504d8a0ebd26e9b7d971c8eb9552b57Repay Borrow35177522023-01-09 15:01:00139 days 14 hrs ago0xeb52350566319f1a1e6b9da3c7ac2cf12854104d IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089325
0xe5fb5ba75526bcbeaad88fbca412fe674c85ec899efe87a496b4ed42f6dd0b04Repay Borrow35176342023-01-09 14:33:42139 days 14 hrs ago0x3fca8ed84365ad09490222c9b7b02f216deb2404 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089025
0x7227653e7d1bd744a7fe2a91a20f06ae0ccfbb3a20c68f51d7aad3774e2aab1dRepay Borrow35176192023-01-09 14:30:24139 days 14 hrs ago0x8e10392496fcfbafc33ff4632ba836b8b4f8b61b IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089025
0xb32722d8e854a6e04a7be9235abdbdc57ebb111b0cf331272fb8d5b3661bdc2aRepay Borrow35175352023-01-09 14:10:54139 days 14 hrs ago0x6998ab69d2a0046e565fad8015a7c07a75664f5d IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089025
0x794692bdc10e5fb6c079691bd7724e6b316e004531e4791fe877398b107878fdRepay Borrow35173592023-01-09 13:27:54139 days 15 hrs ago0x76d5808702f4f1930ceef276010be78103f39bd7 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089025
0x470e8130c076f4546edb135208b457c49806238328bcef70583b5f5a911b6f70Repay Borrow35172672023-01-09 13:04:24139 days 15 hrs ago0x1534a04594e88f0453d0b25a98380f41d95add76 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004088725
0x4043d5b2dd9001d088a6e1a3b2b156c520c4b4e9df3fc32f1710eb5235d09153Borrow35171992023-01-09 12:46:30139 days 16 hrs ago0x1534a04594e88f0453d0b25a98380f41d95add76 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0012850075
0xc71d3ad550ea252c6071f0bf2ba4b80c38c2d6a1d865484ea0266dd789ca72b7Repay Borrow35169272023-01-09 11:34:54139 days 17 hrs ago0x7b23638e7d5c9e8a23d37e324a31e27c813e1175 IN 0xbc9572bd927251717b254088bf5ca01ec7237a790.01 DEV0.0004089025
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0x654db8c6c2db5b0c60c93ed1fdae68450b75f63da91f3301b75733f02e84828a40857772023-04-05 14:13:0053 days 14 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0 DEV
0x654db8c6c2db5b0c60c93ed1fdae68450b75f63da91f3301b75733f02e84828a40857772023-04-05 14:13:0053 days 14 hrs ago 0xe3f114ee2ff6eb04a8788c2a267bd135756c1ba20xbc9572bd927251717b254088bf5ca01ec7237a790 DEV
0x654db8c6c2db5b0c60c93ed1fdae68450b75f63da91f3301b75733f02e84828a40857772023-04-05 14:13:0053 days 14 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0xb0026ebfc3da51f3f4f41a6596a37c049e48f87bb96b5907eaef654f37ce1c2740857762023-04-05 14:12:4853 days 14 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0 DEV
0xb0026ebfc3da51f3f4f41a6596a37c049e48f87bb96b5907eaef654f37ce1c2740857762023-04-05 14:12:4853 days 14 hrs ago 0xe3f114ee2ff6eb04a8788c2a267bd135756c1ba20xbc9572bd927251717b254088bf5ca01ec7237a790 DEV
0xb0026ebfc3da51f3f4f41a6596a37c049e48f87bb96b5907eaef654f37ce1c2740857762023-04-05 14:12:4853 days 14 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x7b06d337110097d21c06a3d999394294a87c65894b568e8b69311ac9795367e135360752023-01-12 14:29:18136 days 14 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0xcb41c303a0f31438b0a5941073c520ff91a410d81c7f31a9bbba32f334a5cfab35322162023-01-11 23:34:48137 days 5 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x953109466e8c5ecb3190edc2ac17c5fcd1757c0124a67318ba6f68fc8284b2f835288622023-01-11 10:31:30137 days 18 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0 DEV
0x953109466e8c5ecb3190edc2ac17c5fcd1757c0124a67318ba6f68fc8284b2f835288622023-01-11 10:31:30137 days 18 hrs ago 0xe3f114ee2ff6eb04a8788c2a267bd135756c1ba20xbc9572bd927251717b254088bf5ca01ec7237a790 DEV
0x953109466e8c5ecb3190edc2ac17c5fcd1757c0124a67318ba6f68fc8284b2f835288622023-01-11 10:31:30137 days 18 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x8b2238941c195178bfea98d13fc864545329831e108bd3d740ee6e1c8f4c3fa835236132023-01-10 14:17:00138 days 14 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x21c6a9cef722d36fa50031a934ed7eca8dad081e21eb133e4dee83870f77877035235002023-01-10 13:50:54138 days 15 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x5af32a954cc8426d1362e873101500de570397544561f551113f0b408a31f59835225252023-01-10 10:00:00138 days 19 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x5ae798adc300e106631a842d5a72f1df9ad026962e6090c749f689ae38b7fd1b35225242023-01-10 9:59:36138 days 19 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0 DEV
0x5ae798adc300e106631a842d5a72f1df9ad026962e6090c749f689ae38b7fd1b35225242023-01-10 9:59:36138 days 19 hrs ago 0xe3f114ee2ff6eb04a8788c2a267bd135756c1ba20xbc9572bd927251717b254088bf5ca01ec7237a790 DEV
0x5ae798adc300e106631a842d5a72f1df9ad026962e6090c749f689ae38b7fd1b35225242023-01-10 9:59:36138 days 19 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x00756d2c87e7a6b581e6811fdd9bb4fe2997ee97c7226777a5cf4032add7a98a35222472023-01-10 8:57:06138 days 20 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0xb5ccb55f3e767afd153530817244b70594d84605f78ab481f992cbc440a035dc35221272023-01-10 8:30:06138 days 20 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x0f5b3c0341590900ed465f1679b263d5bae7b73e5a9258a90d142b8a1def95cc35218552023-01-10 7:22:30138 days 21 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x3e1b5ea04e8645885be61730383c1145d4c0e0667f986fe2af2c055b3d926ad135218122023-01-10 7:13:06138 days 21 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x8c86dafc767e082075a7631c08faef5925d049ddc4fab6ff586e73932297b6d935211672023-01-10 4:39:30139 days 22 mins ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0x6c49bd1ded2fa867362629f5b25e18d840f33316c493cc1181ecae6d221185ee35198912023-01-09 23:38:24139 days 5 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0xd940b00573b17902318f1d58b7a7e83f4c09a7c981c57c893d4488d8991620f335198352023-01-09 23:25:48139 days 5 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
0xb236f85b1564ebf0e2849e177ebbb5d96c8b846e88462694c0352bc0f040203a35189092023-01-09 19:48:00139 days 9 hrs ago 0xbc9572bd927251717b254088bf5ca01ec7237a790xd0c9a9c71909ed078e5b3b0480071c83ee9e40db0.01 DEV
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.

Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x4641dD52Eca07b684BC9e2455Bca11fDcfAfab1B

Contract Name:
ERC1967Proxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at moonbase.moonscan.io on 2022-02-04
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}


// File @openzeppelin/contracts/proxy/beacon/[email protected]


pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}


// File @openzeppelin/contracts/utils/[email protected]


pragma solidity ^0.8.0;

/**
 * @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);
            }
        }
    }
}


// File @openzeppelin/contracts/utils/[email protected]


pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}


// File @openzeppelin/contracts/proxy/ERC1967/[email protected]


pragma solidity ^0.8.2;



/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

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

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

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal {
        address oldImplementation = _getImplementation();

        // Initial upgrade and setup call
        _setImplementation(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }

        // Perform rollback test if not already in progress
        StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot.getBooleanSlot(_ROLLBACK_SLOT);
        if (!rollbackTesting.value) {
            // Trigger rollback using upgradeTo from the new implementation
            rollbackTesting.value = true;
            Address.functionDelegateCall(
                newImplementation,
                abi.encodeWithSignature(
                    "upgradeTo(address)",
                    oldImplementation
                )
            );
            rollbackTesting.value = false;
            // Check rollback was effective
            require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades");
            // Finally reset to the new implementation and log the upgrade
            _setImplementation(newImplementation);
            emit Upgraded(newImplementation);
        }
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }

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

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

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

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

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(
            Address.isContract(newBeacon),
            "ERC1967: new beacon is not a contract"
        );
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }
}


// File contracts/ERC1967Proxy.sol


pragma solidity ^0.8.0;


/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        assert(
            _IMPLEMENTATION_SLOT ==
                bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)
        );
        _upgradeToAndCall(_logic, _data, false);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation()
        internal
        view
        virtual
        override
        returns (address impl)
    {
        return ERC1967Upgrade._getImplementation();
    }
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beacon","type":"address"}],"name":"BeaconUpgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://9b8470f06e8a3960c912103fc2be177edaad69584ee3c7d2809ee737e79408e7
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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