Contract 0x7a3cdb2364f92369a602cae81167d0679087e6a3 2

Contract Overview

Balance:
33,484.32 CRO

CRO Value:
$3,743.55 (@ $0.11/CRO)

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xb04ac2a7dd65533739d0dbbc50f77bea9c1b33de90f29b434a76b8953bb794040x79c7550f34966122022-07-02 2:08:1938 secs ago0xf04860175abda90af8516dceb93f67965acef2fa IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO0.5646250
0xfbb71c9506f4ba9edfb1d5a9345f7eb4073003604926d7f70285fb9cacf5d7550xc4175a4434965992022-07-02 2:07:061 min ago0x92ab472d2ec26f229a3959e945ff1a53d8b1f925 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3195 CRO2.583387447526 4,971.752915201
0x32fb659421c002c02a57ce8385c0cc67f0faa8a625d48a7d695dff23423925910x79c7550f34965962022-07-02 2:06:482 mins ago0xf04860175abda90af8516dceb93f67965acef2fa IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO0.5646250
0xef984b410cffa1f120996955bebf9fa75faad2f557e34af5ceef70e875cb9338Cancel Listing34965892022-07-02 2:06:092 mins ago0xa023bf936d08767b8330ec475aa82576b2c8edc4 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO1.775244083883 4,971.753356196
0xccabfc55c766e68379b4fc7b82a17f5cf728d659a79168071c2e45541fbe1a0c0xc4175a4434965892022-07-02 2:06:092 mins ago0x92ab472d2ec26f229a3959e945ff1a53d8b1f925 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3195 CRO2.583387676673 4,971.753356196
0x09dee16b5b7457a5d30ec86b783b8ae60fbe5781ddfaab6cd8e8a268dc1b0add0x79c7550f34965882022-07-02 2:06:032 mins ago0x85f78899c135174f5c22e489586b214e647e7640 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO1.830930
0x2a8d8dd29d06f67e03c9e7a7169c9ec5c73f702ea7f308f05fa6592300637d89Cancel Listing34965872022-07-02 2:05:573 mins ago0xa023bf936d08767b8330ec475aa82576b2c8edc4 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO1.77524410782 4,971.753423234
0x9179e367e4986fe4be0ae017b6e8d3bf8986f3c34b3b184d1df34edb0c4a5a1c0x79c7550f34965812022-07-02 2:05:233 mins ago0x76573dd5496665088751513f1fbcc5b4c8d0622c IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO1.830990
0xbc00bc01221d3f080f87681173fef7ff5fc63e84cc71dc669696764d3309deaeWithdraw Payment...34965782022-07-02 2:05:063 mins ago0x1d9e0bd4ed0c45b646e844b706d9fe8224249d72 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO0.2456249766460
0x4a274e6fe9d8ca77b376c48e2c2c9c2630c8c3e0a049c102dd18cd33182b096f0xc4175a4434965762022-07-02 2:04:544 mins ago0x92ab472d2ec26f229a3959e945ff1a53d8b1f925 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3195 CRO2.530911062901 4,971.753833357
0xb5407a56825a749da126e08b60c615f20e7737e3033ab33c84aabc90b4482d6f0xc4175a4434965692022-07-02 2:04:144 mins ago0x92ab472d2ec26f229a3959e945ff1a53d8b1f925 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3195 CRO2.643004373236 4,971.754112528
0x085ed1831de1a30f5fd5a25c1dbf4d66bd5f392430dc0cd94763b4ac3ace74d70x79c7550f34965572022-07-02 2:03:065 mins ago0xe61459c7fecf9aeb93f9d824aef521d046476b5a IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO0.654065 5,000
0x08ba324974db4f82c1d9296c323c8c2c77d1006a730aec5a3eff467cd52f06f70xc4175a4434965442022-07-02 2:01:537 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3300 CRO2.598534712145 4,971.255131211
0x882e26000c871c44dcdc5354cec5dc81cb48b97a4194f34c0b62519164a86b720xc4175a4434965402022-07-02 2:01:307 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3300 CRO2.71784492154 4,971.255288964
0xd9584b3070df8939329390e57af35a465d4d3ba798bcb479063dba811386176e0xc4175a4434965352022-07-02 2:00:597 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3300 CRO2.658189965606 4,971.255490071
0xa32409286ed37b1fd7afec8bf56d6156183676bc773dc553f0ccbb662551899a0xc4175a4434965292022-07-02 2:00:268 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3300 CRO2.605718488743 4,971.255728233
0x8b162ec038b681b2b11a13bcbaab0361b47a22fb4f83b22672ecf9bda30dbd240xc4175a4434965292022-07-02 2:00:268 mins ago0x4bb795e7ae484d829b468d34462e947750fc25ea IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3255 CRO2.7016323155190
0x7dd070a6df77dcd103411c36e7da7e5ae1f4cc27e69f9a24e30efa09c732a0490xc4175a4434965202022-07-02 1:59:349 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3299 CRO2.598535215664 4,971.256094492
0x6bc660efc07bb7b04fbac2cac666c6453e40f92284a9dab799494f9c1e6007670xc4175a4434965172022-07-02 1:59:189 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3280 CRO2.665373818304 4,971.256214699
0x2d137e8181a7f9bf507db9966d337f85707efccb0298d5d74cabe2ee64f4ab140xc4175a4434965122022-07-02 1:58:4910 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3299 CRO2.717845539216 4,971.256418766
0xe281b6f8a49c69b4d91eba51fe1bdd3f63e9ea78cd8f7df0faef879e7c34dd1f0xc4175a4434965022022-07-02 1:57:5311 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3275 CRO2.598535600071 4,971.256829902
0x4838309febb6a7c2b6035ffa9874d7a69497ba62fd9102d8802af676812899150xc4175a4434964972022-07-02 1:57:2411 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3258 CRO2.717845875912 4,971.257034623
0x870a9733be6221fab077dec89bb0ef7a8edc3cf731033e0f6fde107992d59a910xc4175a4434964892022-07-02 1:56:3912 mins ago0x7cc0ca4c6f145a05d43f8f58aefd92c2b824cce0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a3250 CRO2.717846058504 4,971.257368604
0x6afafb378496bd12b9a0b823d31c6f629e54a22fe343723e8c48f9ff17bbe6880x79c7550f34964792022-07-02 1:55:4213 mins ago0xa06555f21c7b60ecb356c763e0248f1eede7f22a IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO1.831028130540
0x82060c425c379318e51f02da3db926e6918a11d9a79cf9a9d297b732a309ba040x79c7550f34964772022-07-02 1:55:3113 mins ago0x167d9f394a3efc39c677a76723e9fa3bd39b2bd0 IN  0x7a3cdb2364f92369a602cae81167d0679087e6a30 CRO1.8189156118330
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xc31e9a2bd08eff4a199a502e3319c58ef95906b7dc76a9b20b442916a38dc40734966092022-07-02 2:08:0255 secs ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6382.5 CRO
0xc31e9a2bd08eff4a199a502e3319c58ef95906b7dc76a9b20b442916a38dc40734966092022-07-02 2:08:0255 secs ago 0x72af9c869a4759e6d50e9656c0741b395532c3dd 0x7a3cdb2364f92369a602cae81167d0679087e6a3382.5 CRO
0xc31e9a2bd08eff4a199a502e3319c58ef95906b7dc76a9b20b442916a38dc40734966092022-07-02 2:08:0255 secs ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d642.5 CRO
0xc31e9a2bd08eff4a199a502e3319c58ef95906b7dc76a9b20b442916a38dc40734966092022-07-02 2:08:0255 secs ago 0x72af9c869a4759e6d50e9656c0741b395532c3dd 0x7a3cdb2364f92369a602cae81167d0679087e6a342.5 CRO
0xfbb71c9506f4ba9edfb1d5a9345f7eb4073003604926d7f70285fb9cacf5d75534965992022-07-02 2:07:061 min ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6182.325 CRO
0xfbb71c9506f4ba9edfb1d5a9345f7eb4073003604926d7f70285fb9cacf5d75534965992022-07-02 2:07:061 min ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d69.75 CRO
0xfbb71c9506f4ba9edfb1d5a9345f7eb4073003604926d7f70285fb9cacf5d75534965992022-07-02 2:07:061 min ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0xeb074cc764f20d8fe4317ab63f45a85bce2becb11.4625 CRO
0xccabfc55c766e68379b4fc7b82a17f5cf728d659a79168071c2e45541fbe1a0c34965892022-07-02 2:06:092 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6182.325 CRO
0xccabfc55c766e68379b4fc7b82a17f5cf728d659a79168071c2e45541fbe1a0c34965892022-07-02 2:06:092 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d69.75 CRO
0xccabfc55c766e68379b4fc7b82a17f5cf728d659a79168071c2e45541fbe1a0c34965892022-07-02 2:06:092 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0xeb074cc764f20d8fe4317ab63f45a85bce2becb11.4625 CRO
0x4a274e6fe9d8ca77b376c48e2c2c9c2630c8c3e0a049c102dd18cd33182b096f34965762022-07-02 2:04:544 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6182.325 CRO
0x4a274e6fe9d8ca77b376c48e2c2c9c2630c8c3e0a049c102dd18cd33182b096f34965762022-07-02 2:04:544 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d69.75 CRO
0x4a274e6fe9d8ca77b376c48e2c2c9c2630c8c3e0a049c102dd18cd33182b096f34965762022-07-02 2:04:544 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0xeb074cc764f20d8fe4317ab63f45a85bce2becb11.4625 CRO
0xb5407a56825a749da126e08b60c615f20e7737e3033ab33c84aabc90b4482d6f34965692022-07-02 2:04:144 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6182.325 CRO
0xb5407a56825a749da126e08b60c615f20e7737e3033ab33c84aabc90b4482d6f34965692022-07-02 2:04:144 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d69.75 CRO
0xb5407a56825a749da126e08b60c615f20e7737e3033ab33c84aabc90b4482d6f34965692022-07-02 2:04:144 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0xeb074cc764f20d8fe4317ab63f45a85bce2becb11.4625 CRO
0x08ba324974db4f82c1d9296c323c8c2c77d1006a730aec5a3eff467cd52f06f734965442022-07-02 2:01:537 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6289.5 CRO
0x08ba324974db4f82c1d9296c323c8c2c77d1006a730aec5a3eff467cd52f06f734965442022-07-02 2:01:537 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d66 CRO
0x08ba324974db4f82c1d9296c323c8c2c77d1006a730aec5a3eff467cd52f06f734965442022-07-02 2:01:537 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0xeb074cc764f20d8fe4317ab63f45a85bce2becb12.25 CRO
0x882e26000c871c44dcdc5354cec5dc81cb48b97a4194f34c0b62519164a86b7234965402022-07-02 2:01:307 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6285 CRO
0x882e26000c871c44dcdc5354cec5dc81cb48b97a4194f34c0b62519164a86b7234965402022-07-02 2:01:307 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d66 CRO
0x882e26000c871c44dcdc5354cec5dc81cb48b97a4194f34c0b62519164a86b7234965402022-07-02 2:01:307 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0xeb074cc764f20d8fe4317ab63f45a85bce2becb14.5 CRO
0xd9584b3070df8939329390e57af35a465d4d3ba798bcb479063dba811386176e34965352022-07-02 2:00:597 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d6285 CRO
0xd9584b3070df8939329390e57af35a465d4d3ba798bcb479063dba811386176e34965352022-07-02 2:00:597 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0x39a3f70d1696093f8cad28e62bcbbf6c8fdf19d66 CRO
0xd9584b3070df8939329390e57af35a465d4d3ba798bcb479063dba811386176e34965352022-07-02 2:00:597 mins ago 0x7a3cdb2364f92369a602cae81167d0679087e6a3 0xeb074cc764f20d8fe4317ab63f45a85bce2becb14.5 CRO
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Loading
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 0xc24205B12fB056822b2b2c42B5ee18272A0A8E74

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"}]

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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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