Contract 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 10

Txn Hash Method
Block
From
To
Value [Txn Fee]
0xa9ddefc1c8af831964cb2cc97209b0bc9d3964a463587b2f09ee9cb9d35f8f6aCancel Collectio...136358782024-04-24 21:49:1911 mins ago0x7cee7d232dcae23fd673ea798078fde6c5a11c3a IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO0.4321970365 5,048.5
0xd74596f4650cccf69dcc408bdbbf0ed4c132ad49fa4f5a0f57d1aebc02bf26b4Cancel Collectio...136358762024-04-24 21:49:0811 mins ago0x7cee7d232dcae23fd673ea798078fde6c5a11c3a IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO0.3460999175 5,048.5
0xce2e6d447a0f6a6a12c096e7dda678191ecc43b2bf933d64c232d6cadc9fbdb9Cancel Collectio...136358742024-04-24 21:48:5711 mins ago0x7cee7d232dcae23fd673ea798078fde6c5a11c3a IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO0.3460999175 5,048.5
0xb262ec74fe79edeb695545b5a4810d11191e5bc5a327e92bca3fa1f94b937501Make Offer136356952024-04-24 21:32:0028 mins agoCronos ID Name berry.cro IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0220 CRO1.04762250
0x53babad56083895e0653e39cd5cef7fde9e4fb0f13a249c7da3b6b365f21c72eMake Offer136356572024-04-24 21:28:2432 mins agoCronos ID Name berry.cro IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0150 CRO0.96126750
0xf54b2a4d6167437b995a0c989140b7a1580c62bad8406c2280db64d949f7b4c2Make Offer136356502024-04-24 21:27:4432 mins agoCronos ID Name berry.cro IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0220 CRO1.04762250
0x9333e5789ca865db50b1db2f875a976d9d89559ccb51169b3dcc9f7512a3fcdaMake Collection ...136353982024-04-24 21:03:5056 mins ago0x42a35da64af872ae57b41de182d6dda1bf442145 IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b032 CRO0.733840750
0x434fb14f09ddfdfeff69c7bc4791a0d33651c23cef4381d60e0265885bb88091Accept Collectio...136353902024-04-24 21:03:0557 mins ago0x7adf7a6eef894c9336c10d17029b34b13f05051a IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO1.97193410
0xd972b309b1549c87d116f9170dfdca6c5a63608f6f7bde5b22e4c7d09746bd20Make Collection ...136353662024-04-24 21:00:4959 mins ago0x42a35da64af872ae57b41de182d6dda1bf442145 IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b032 CRO0.733840750
0xfd9f14dcb16d99b495aee2f717cb753cc3230fcfd95662addbcb0ab1b5d76bd0Accept Collectio...136353492024-04-24 20:59:121 hr 1 min ago0x0b2165b3e0736c08f38e6f6bafd200ce69698a8c IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO1.97199470
0x9e7fd4384d92d0761ba3e0698e651bc758a9886a9588acadaa3d4b8d4d386761Make Offer136347492024-04-24 20:02:231 hr 58 mins ago0xfe2c3ff0734a87c7200a8e1aa09a3ec163042bfe IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0500 CRO1.01060309 5,001.5
0xbd72b46410534df087b6b65901d03bf359d595d3ec53f6092b75242b1ea80d84Make Collection ...136347132024-04-24 19:58:582 hrs 1 min agoCronos ID Name tbk0133.cro IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b063 CRO0.734052850
0xdfc5b9ae9fb8c15a3e807de4da7f8952dc2e3a7cba7cbc413b8b82b68cc29e80Accept Collectio...136342242024-04-24 19:12:412 hrs 47 mins ago0xa37a3932b7973bba4f18a163479e486ae885648e IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO2.11402090
0xe62c0f963ad529211efb581895433ef43237f5c5c6e1a246f31eb36054233090Uppdate Collecti...136339812024-04-24 18:49:393 hrs 10 mins ago0x1f5bd613f0aa80d1b452eb904ab11ecf29303dbf IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b05 CRO0.287016750
0xfe78f209d530c84a516bda70956ab0d3c6a9327e422c00b0a18cce432fb2b509Make Offer136336902024-04-24 18:22:043 hrs 38 mins ago0x337edf5a11e214e132d12a3e934006822728d3c8 IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b030 CRO1.015748103 5,048.5
0xcd29d3b75ca75e5c84406d412f9bcfe6c8367d93d6cbb1a41ea7bc9d2e52f642Make Collection ...136336172024-04-24 18:15:093 hrs 45 mins ago0x42a35da64af872ae57b41de182d6dda1bf442145 IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b010 CRO0.735194150
0x449e86dac0c1548658a23813bb32011d3e7c29611a1c10bb71b162a45e48d334Make Collection ...136335132024-04-24 18:05:183 hrs 55 mins agoCronos ID Name smacks.cro IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b075 CRO0.7336833595 5,048.5
0x46ac9986b40414769a4526cf3012befe1908e3784eced01230ec2a328877cf6eAccept Collectio...136334292024-04-24 17:57:204 hrs 3 mins ago0x598de091f7243966a5a80669d67c99a9e69773ff IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO1.993300650
0x48642f42dff822f1c7e05ba3ee13c521058010b6140b8d895bfa0787a833b4bfAccept Collectio...136334242024-04-24 17:56:524 hrs 3 mins ago0x598de091f7243966a5a80669d67c99a9e69773ff IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO1.98433690
0xf17b349a73a727adff0a2e281c7782718faaa32a8d71f6e3d1f9834036c24e89Accept Collectio...136333872024-04-24 17:53:224 hrs 7 mins ago0x598de091f7243966a5a80669d67c99a9e69773ff IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO1.938164750
0x4a5ca6ccd2156cd9862ebd0f4ca953f15a6113edd71a59b8d43d2f0769062ab3Make Offer136331452024-04-24 17:30:274 hrs 30 mins ago0x337edf5a11e214e132d12a3e934006822728d3c8 IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0150 CRO1.017444399 5,048.5
0xf0031f29d2eed82319b53c24b54198f692078dc5d909c0e38892b8e46420e296Make Offer136331392024-04-24 17:29:534 hrs 30 mins ago0x337edf5a11e214e132d12a3e934006822728d3c8 IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0200 CRO0.860436049 5,048.5
0x6fdffc923679fd994f1c52a3def91ea9c56455cc3a8c066ab6b7a910315ee841Cancel Offer136324182024-04-24 16:21:335 hrs 38 mins ago0x95257d590f291823e0d14f5e62d1f5faf4bd0951 IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO0.433779850
0x95c423a715dd0094b17a6b949638cc1e204b3aadcaf89c85b3393c8f5b4a9080Accept Offer136323042024-04-24 16:10:455 hrs 49 mins ago0x3f0dff6014836fa3e7308c1ed7b46b9b101977ea IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO2.0073088425 5,048.5
0xf0849f471cbf3e1bb349d9534e1f32e2687eeeff7463af4a9878d1ee928a6526Cancel Offer136321142024-04-24 15:52:446 hrs 7 mins agoCronos ID Name kallmore.cro IN  0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00 CRO0.472080154836 5,495.886408562
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0xd74596f4650cccf69dcc408bdbbf0ed4c132ad49fa4f5a0f57d1aebc02bf26b4136358762024-04-24 21:49:0811 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x7cee7d232dcae23fd673ea798078fde6c5a11c3a700 CRO
0xce2e6d447a0f6a6a12c096e7dda678191ecc43b2bf933d64c232d6cadc9fbdb9136358742024-04-24 21:48:5711 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x7cee7d232dcae23fd673ea798078fde6c5a11c3a900 CRO
0x434fb14f09ddfdfeff69c7bc4791a0d33651c23cef4381d60e0265885bb88091136353902024-04-24 21:03:0557 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x7adf7a6eef894c9336c10d17029b34b13f05051a27.84 CRO
0x434fb14f09ddfdfeff69c7bc4791a0d33651c23cef4381d60e0265885bb88091136353902024-04-24 21:03:0557 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port0.96 CRO
0x434fb14f09ddfdfeff69c7bc4791a0d33651c23cef4381d60e0265885bb88091136353902024-04-24 21:03:0557 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port3.2 CRO
0xfd9f14dcb16d99b495aee2f717cb753cc3230fcfd95662addbcb0ab1b5d76bd0136353492024-04-24 20:59:121 hr 1 min ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x0b2165b3e0736c08f38e6f6bafd200ce69698a8c27.84 CRO
0xfd9f14dcb16d99b495aee2f717cb753cc3230fcfd95662addbcb0ab1b5d76bd0136353492024-04-24 20:59:121 hr 1 min ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port0.96 CRO
0xfd9f14dcb16d99b495aee2f717cb753cc3230fcfd95662addbcb0ab1b5d76bd0136353492024-04-24 20:59:121 hr 1 min ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port3.2 CRO
0xdfc5b9ae9fb8c15a3e807de4da7f8952dc2e3a7cba7cbc413b8b82b68cc29e80136342242024-04-24 19:12:412 hrs 47 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00xa37a3932b7973bba4f18a163479e486ae885648e368 CRO
0xdfc5b9ae9fb8c15a3e807de4da7f8952dc2e3a7cba7cbc413b8b82b68cc29e80136342242024-04-24 19:12:412 hrs 47 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port12 CRO
0xdfc5b9ae9fb8c15a3e807de4da7f8952dc2e3a7cba7cbc413b8b82b68cc29e80136342242024-04-24 19:12:412 hrs 47 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port20 CRO
0x46ac9986b40414769a4526cf3012befe1908e3784eced01230ec2a328877cf6e136334292024-04-24 17:57:204 hrs 3 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x598de091f7243966a5a80669d67c99a9e69773ff11.96 CRO
0x46ac9986b40414769a4526cf3012befe1908e3784eced01230ec2a328877cf6e136334292024-04-24 17:57:204 hrs 3 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port0.39 CRO
0x46ac9986b40414769a4526cf3012befe1908e3784eced01230ec2a328877cf6e136334292024-04-24 17:57:204 hrs 3 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port0.65 CRO
0x48642f42dff822f1c7e05ba3ee13c521058010b6140b8d895bfa0787a833b4bf136334242024-04-24 17:56:524 hrs 3 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x598de091f7243966a5a80669d67c99a9e69773ff13.8 CRO
0x48642f42dff822f1c7e05ba3ee13c521058010b6140b8d895bfa0787a833b4bf136334242024-04-24 17:56:524 hrs 3 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port0.45 CRO
0x48642f42dff822f1c7e05ba3ee13c521058010b6140b8d895bfa0787a833b4bf136334242024-04-24 17:56:524 hrs 3 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port0.75 CRO
0xf17b349a73a727adff0a2e281c7782718faaa32a8d71f6e3d1f9834036c24e89136333872024-04-24 17:53:224 hrs 7 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x598de091f7243966a5a80669d67c99a9e69773ff8.7 CRO
0xf17b349a73a727adff0a2e281c7782718faaa32a8d71f6e3d1f9834036c24e89136333872024-04-24 17:53:224 hrs 7 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port0.3 CRO
0xf17b349a73a727adff0a2e281c7782718faaa32a8d71f6e3d1f9834036c24e89136333872024-04-24 17:53:224 hrs 7 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port1 CRO
0x6fdffc923679fd994f1c52a3def91ea9c56455cc3a8c066ab6b7a910315ee841136324182024-04-24 16:21:335 hrs 38 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x95257d590f291823e0d14f5e62d1f5faf4bd09512,500 CRO
0x95c423a715dd0094b17a6b949638cc1e204b3aadcaf89c85b3393c8f5b4a9080136323042024-04-24 16:10:455 hrs 49 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b00x3f0dff6014836fa3e7308c1ed7b46b9b101977ea7,947.5 CRO
0x95c423a715dd0094b17a6b949638cc1e204b3aadcaf89c85b3393c8f5b4a9080136323042024-04-24 16:10:455 hrs 49 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port127.5 CRO
0x95c423a715dd0094b17a6b949638cc1e204b3aadcaf89c85b3393c8f5b4a9080136323042024-04-24 16:10:455 hrs 49 mins ago 0x016b347aeb70cc45e3bbaf324feb3c7c464e18b0 EbisusBay: Port425 CRO
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xc24205B12fB056822b2b2c42B5ee18272A0A8E74
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
ERC1967Proxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

/**
 *Submitted for verification at cronoscan.com on 2022-03-18
*/

// File contracts/proxy/Proxy.sol

// 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 contracts/proxy/beacon/IBeacon.sol

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 contracts/utils/Address.sol

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 contracts/utils/StorageSlot.sol

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 contracts/proxy/ERC1967/ERC1967Upgrade.sol

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/proxy/ERC1967/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"}]

Deployed Bytecode

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://9b8470f06e8a3960c912103fc2be177edaad69584ee3c7d2809ee737e79408e7
Block Transaction Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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