ETH Price: $3,889.90 (-0.87%)

Token

HungerBrainz (HBZ)
 

Overview

Max Total Supply

0 HBZ

Holders

538

Market

Volume (24H)

N/A

Min Price (24H)

N/A

Max Price (24H)

N/A
Balance
3 HBZ
0xCD3447CD39379a3dD2F00F761796a418cd53B637
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# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
Proxy

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Etherscan.io on 2022-01-12
*/

// File: TestContracts/Proxy.sol

pragma solidity 0.8.7;

/// @dev Proxy for NFT Factory
contract Proxy {

    // Storage for this proxy
    bytes32 private constant IMPLEMENTATION_SLOT = bytes32(0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc);
    bytes32 private constant ADMIN_SLOT          = bytes32(0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103);

    constructor(address impl) {
        require(impl != address(0));

        _setSlotValue(IMPLEMENTATION_SLOT, bytes32(uint256(uint160(impl))));
        _setSlotValue(ADMIN_SLOT, bytes32(uint256(uint160(msg.sender))));
    }

    function setImplementation(address newImpl) public {
        require(msg.sender == _getAddress(ADMIN_SLOT));
        _setSlotValue(IMPLEMENTATION_SLOT, bytes32(uint256(uint160(newImpl))));
    }
    
    function implementation() public view returns (address impl) {
        impl = address(uint160(uint256(_getSlotValue(IMPLEMENTATION_SLOT))));
    }

    function _getAddress(bytes32 key) internal view returns (address add) {
        add = address(uint160(uint256(_getSlotValue(key))));
    }

    function _getSlotValue(bytes32 slot_) internal view returns (bytes32 value_) {
        assembly {
            value_ := sload(slot_)
        }
    }

    function _setSlotValue(bytes32 slot_, bytes32 value_) internal {
        assembly {
            sstore(slot_, value_)
        }
    }

    /**
     * @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 {
        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 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 {
        _delegate(_getAddress(IMPLEMENTATION_SLOT));
    }

}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"impl","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"impl","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newImpl","type":"address"}],"name":"setImplementation","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000051702af5ded9964272744939741dd04631d94431

-----Decoded View---------------
Arg [0] : impl (address): 0x51702Af5DeD9964272744939741dD04631D94431

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000051702af5ded9964272744939741dd04631d94431


Deployed Bytecode Sourcemap

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Swarm Source

ipfs://248d11a3fde11665845c4dc288385c5eeda3ee4e694ae94949913a89afcbdb8d
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