Contract 0xce47b8ed370480f69802c29b2b7c0c740ac07c81

Contract Overview

Balance:
0 DEV

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xf6053092b60e51bdd13a89d2fee3f7355497a49af3f86f42e900e9ace95a3f80Withdraw29591642022-10-05 16:47:54178 days 10 hrs ago0x83a3828d9bc9f1c784960aad169974b9201b779c IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008117075
0xb50b8ff6e661b55e2fe4fc031c1236226fd1dadc50a022668a782a234f4b33eeWithdraw29591642022-10-05 16:47:54178 days 10 hrs ago0xf83aa6834e127a43029460429a3ac03c043a48b0 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008117075
0x274698ba27afa9f7ed5cd035c216e60f06e721bc458ee389dd66cbb874ff20d9Withdraw29591642022-10-05 16:47:54178 days 10 hrs ago0xa96a12c95160d098e68f9a830d440bffcf751e9b IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008117075
0x80affabca34077b15d54339d0986b46a98026b7aa2e20f05b7eaeaa215c063d7Withdraw29591642022-10-05 16:47:54178 days 10 hrs ago0xa5db0d8f929ed737424d3b86ad8c5de35c504481 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008817125
0x06e2d1b49f8dda806162fa66084ff70bf82b42c36bbd96dfa0b7933186069c54Withdraw29591632022-10-05 16:47:36178 days 10 hrs ago0x70cbda2d0e85e9226f6b0bca783262b31d880f6f IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008816825
0x26006744f6e0683ce728b0354855cba83321f380ac1c820b18be016ac4b2b074Deposit29591542022-10-05 16:45:12178 days 10 hrs ago0xa96a12c95160d098e68f9a830d440bffcf751e9b IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051425
0x54dc34401dd7afdea4344634a039b0422944b419dffd6552a89da098a73d77aeDeposit29591532022-10-05 16:45:00178 days 10 hrs ago0x597d0d4a389a5c800a7ffc4a0f4030c9585bac3d IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051425
0x635066a6e905760f0e799e9304843f3882e102ac3f5ac37e465edb9ee07d176bDeposit29591532022-10-05 16:45:00178 days 10 hrs ago0xb47047cbda4672c94a1f913a0b0747e71fadb529 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0x6a0560aa538c0d423ae6b9b144df699cca3dffb294f5376c1e7912ca4f153d2fDeposit29591532022-10-05 16:45:00178 days 10 hrs ago0xf83aa6834e127a43029460429a3ac03c043a48b0 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0xc1655ba0ff8379deb8686b1edabf57f1db4248b7020c86b391cabc5288244777Deposit29591532022-10-05 16:45:00178 days 10 hrs ago0xa5db0d8f929ed737424d3b86ad8c5de35c504481 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0x8c6dc6acbae192ae79a02e8d235e0407776d57d25de061d96942358a0a53eb1bDeposit29591532022-10-05 16:45:00178 days 10 hrs ago0x83a3828d9bc9f1c784960aad169974b9201b779c IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0x1c6aaaf1ab08c5bd44f9d4256e128e49417d48a150aafd842ca217c575319a6aDeposit29591522022-10-05 16:44:48178 days 10 hrs ago0x70cbda2d0e85e9226f6b0bca783262b31d880f6f IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051425
0xd53250169bda56f72f2aee722c89cfae4889da42763c0382ce93c7c9a462a4e5Withdraw29589902022-10-05 16:04:06178 days 10 hrs ago0x8431bea037d1881555519543e4aa2311a132a9c8 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.00247374
0x2334934569006e97658ed001447f6b3fe579af66f63e1d86caa134717defe28aDeposit29589432022-10-05 15:52:12178 days 11 hrs ago0x8431bea037d1881555519543e4aa2311a132a9c8 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0x268f977ea3148681548b775dad1e509add2b6fd5420383e3f35dd9ea6172d691Deposit29587922022-10-05 15:13:06178 days 11 hrs ago0x8b596d47d9c26f48fee1cd4e5d24db38405fb3ea IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0x04a33570f3718ceca6ae1fd308244f73360acf6c7386af91eb8f0cb6c1659c14Withdraw29586442022-10-05 14:38:54178 days 12 hrs ago0xfaf94cbaeeb4c3517476acbb0c7d0765c3340363 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0014288775
0xdde4fa329e3ca5ee0a854941d3e2ab831014c3d477ee69245b49c91f9b822344Deposit29585272022-10-05 14:07:18178 days 12 hrs ago0xfaf94cbaeeb4c3517476acbb0c7d0765c3340363 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0003725475
0x8a035c5134c10e5fc573910c0307dae8a7533c80180771f75f53b1e7dfb69d4cDeposit29585272022-10-05 14:07:18178 days 12 hrs ago0xfaf94cbaeeb4c3517476acbb0c7d0765c3340363 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0xb1d9a9def7bae63f8cdd41db6b48cab220f2ed1469c121bf421d0635f448a5c0Deposit29578022022-10-05 10:58:18178 days 16 hrs ago0xf1725789d0a2f21a7e97fa67f166030f05ff6c8b IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0x17fa2f2058aaf721979abbdafa4223a0f723c3aeddc7e66df8ed960d556a38e7Deposit29572532022-10-05 8:36:36178 days 18 hrs ago0x1d8f40b8720138ae4dbf0008a84acb266249acec IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0xc7dcf84da952320aa30f852ca95fb4fbbef1a53abb2a0244647f4ece9cd9cf90Withdraw29571522022-10-05 8:11:36178 days 18 hrs ago0x13fa00434179d5cb1874c9359e89c586a42121b8 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0013790975
0x20ef7929119872c6de8fcddf2e63f73fd7cb9b560b26cee7e7060dbf36e9756eDeposit29570472022-10-05 7:45:54178 days 19 hrs ago0x13fa00434179d5cb1874c9359e89c586a42121b8 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0007051725
0x9cb53ce5649f72fe133ce6e108d6035c0cfd5fc7e43d3ef504ec979f60eebe02Withdraw29563482022-10-05 4:52:42178 days 22 hrs ago0xddd64656c54b037d6fe7c7c2af693eaa877cf201 IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008116775
0xf2a0114017f636fd9f63004d5d4ebd92c89a46136a6d2492dc90793761c3af6eWithdraw29563472022-10-05 4:52:24178 days 22 hrs ago0x4fa7a1c76581e8a3362e2b2d8fc37f2c4c954dce IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008117075
0x9661bbe1144e7e1908946178b2fb356c86d0b3df6063be4a8ee87842c5fbf462Withdraw29563472022-10-05 4:52:24178 days 22 hrs ago0x78ab3ead09542bd5a2ac3661a1bf0f2075a2bafc IN 0xce47b8ed370480f69802c29b2b7c0c740ac07c810.01 DEV0.0008117075
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Latest 25 internal transaction
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0xf6053092b60e51bdd13a89d2fee3f7355497a49af3f86f42e900e9ace95a3f8029591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630 DEV
0xf6053092b60e51bdd13a89d2fee3f7355497a49af3f86f42e900e9ace95a3f8029591642022-10-05 16:47:54178 days 10 hrs ago 0xed692a69115e2e61affaca71dc8d02c696af4f500xce47b8ed370480f69802c29b2b7c0c740ac07c810 DEV
0xf6053092b60e51bdd13a89d2fee3f7355497a49af3f86f42e900e9ace95a3f8029591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0xb50b8ff6e661b55e2fe4fc031c1236226fd1dadc50a022668a782a234f4b33ee29591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630 DEV
0xb50b8ff6e661b55e2fe4fc031c1236226fd1dadc50a022668a782a234f4b33ee29591642022-10-05 16:47:54178 days 10 hrs ago 0xed692a69115e2e61affaca71dc8d02c696af4f500xce47b8ed370480f69802c29b2b7c0c740ac07c810 DEV
0xb50b8ff6e661b55e2fe4fc031c1236226fd1dadc50a022668a782a234f4b33ee29591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x274698ba27afa9f7ed5cd035c216e60f06e721bc458ee389dd66cbb874ff20d929591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630 DEV
0x274698ba27afa9f7ed5cd035c216e60f06e721bc458ee389dd66cbb874ff20d929591642022-10-05 16:47:54178 days 10 hrs ago 0xed692a69115e2e61affaca71dc8d02c696af4f500xce47b8ed370480f69802c29b2b7c0c740ac07c810 DEV
0x274698ba27afa9f7ed5cd035c216e60f06e721bc458ee389dd66cbb874ff20d929591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x80affabca34077b15d54339d0986b46a98026b7aa2e20f05b7eaeaa215c063d729591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630 DEV
0x80affabca34077b15d54339d0986b46a98026b7aa2e20f05b7eaeaa215c063d729591642022-10-05 16:47:54178 days 10 hrs ago 0xed692a69115e2e61affaca71dc8d02c696af4f500xce47b8ed370480f69802c29b2b7c0c740ac07c810 DEV
0x80affabca34077b15d54339d0986b46a98026b7aa2e20f05b7eaeaa215c063d729591642022-10-05 16:47:54178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x06e2d1b49f8dda806162fa66084ff70bf82b42c36bbd96dfa0b7933186069c5429591632022-10-05 16:47:36178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630 DEV
0x06e2d1b49f8dda806162fa66084ff70bf82b42c36bbd96dfa0b7933186069c5429591632022-10-05 16:47:36178 days 10 hrs ago 0xed692a69115e2e61affaca71dc8d02c696af4f500xce47b8ed370480f69802c29b2b7c0c740ac07c810 DEV
0x06e2d1b49f8dda806162fa66084ff70bf82b42c36bbd96dfa0b7933186069c5429591632022-10-05 16:47:36178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x26006744f6e0683ce728b0354855cba83321f380ac1c820b18be016ac4b2b07429591542022-10-05 16:45:12178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x54dc34401dd7afdea4344634a039b0422944b419dffd6552a89da098a73d77ae29591532022-10-05 16:45:00178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x635066a6e905760f0e799e9304843f3882e102ac3f5ac37e465edb9ee07d176b29591532022-10-05 16:45:00178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x6a0560aa538c0d423ae6b9b144df699cca3dffb294f5376c1e7912ca4f153d2f29591532022-10-05 16:45:00178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0xc1655ba0ff8379deb8686b1edabf57f1db4248b7020c86b391cabc528824477729591532022-10-05 16:45:00178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x8c6dc6acbae192ae79a02e8d235e0407776d57d25de061d96942358a0a53eb1b29591532022-10-05 16:45:00178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0x1c6aaaf1ab08c5bd44f9d4256e128e49417d48a150aafd842ca217c575319a6a29591522022-10-05 16:44:48178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 DEV
0xd53250169bda56f72f2aee722c89cfae4889da42763c0382ce93c7c9a462a4e529589902022-10-05 16:04:06178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630 DEV
0xd53250169bda56f72f2aee722c89cfae4889da42763c0382ce93c7c9a462a4e529589902022-10-05 16:04:06178 days 10 hrs ago 0xed692a69115e2e61affaca71dc8d02c696af4f500xce47b8ed370480f69802c29b2b7c0c740ac07c810 DEV
0xd53250169bda56f72f2aee722c89cfae4889da42763c0382ce93c7c9a462a4e529589902022-10-05 16:04:06178 days 10 hrs ago 0xce47b8ed370480f69802c29b2b7c0c740ac07c810x78ad8bceac24a5ef3a451c18b4e29fe0df39ac630.01 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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