Address Details
contract
proxy
0x22a4aAF42A50bFA7238182460E32f15859c93dfe
- Contract Name
- RandomProxy
- Creator
- 0xe23a4c–2b2dee at 0x5b159f–09fa64
- Implementation
- Random | 0xe43ea9c641a2af9959caeee54adb089f65457028
- Balance
- 0 CELO ( )
- Locked CELO Balance
- 0.00 CELO
- Voting CELO Balance
- 0.00 CELO
- Pending Unlocked Gold
- 0.00 CELO
- Tokens
-
Fetching tokens...
- Transactions
- 4 Transactions
- Transfers
- 0 Transfers
- Gas Used
- 175,019
- Last Balance Update
- 28615720
Transactions
Internal Transactions
Coin Balance History
Logs
Code
Read Contract
Read Proxy
Write Contract
Write Proxy
- Contract name:
- RandomProxy
- Optimization enabled
- false
- Is a Proxy?
- true
- Implementation Name:
- Random
- Compiler version
- v0.5.8+commit.23d335f2
- Verified at
- 2020-04-22T22:02:20.491359Z
Contract source code
pragma solidity ^0.5.3; library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call.value(amount)(""); require(success, "Address: unable to send value, recipient may have reverted"); } } contract Proxy { bytes32 private constant OWNER_POSITION = bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1); bytes32 private constant IMPLEMENTATION_POSITION = bytes32( uint256(keccak256("eip1967.proxy.implementation")) - 1 ); event OwnerSet(address indexed owner); event ImplementationSet(address indexed implementation); constructor() public { _setOwner(msg.sender); } modifier onlyOwner() { require(msg.sender == _getOwner(), "sender was not owner"); _; } function() external payable { bytes32 implementationPosition = IMPLEMENTATION_POSITION; address implementationAddress; assembly { implementationAddress := sload(implementationPosition) } require(implementationAddress != address(0), "No Implementation set"); require(Address.isContract(implementationAddress), "Invalid contract address"); assembly { let newCallDataPosition := mload(0x40) mstore(0x40, add(newCallDataPosition, calldatasize)) calldatacopy(newCallDataPosition, 0, calldatasize) let delegatecallSuccess := delegatecall( gas, implementationAddress, newCallDataPosition, calldatasize, 0, 0 ) let returnDataSize := returndatasize let returnDataPosition := mload(0x40) mstore(0x40, add(returnDataPosition, returnDataSize)) returndatacopy(returnDataPosition, 0, returnDataSize) switch delegatecallSuccess case 0 { revert(returnDataPosition, returnDataSize) } default { return(returnDataPosition, returnDataSize) } } } function _transferOwnership(address newOwner) external onlyOwner { _setOwner(newOwner); } function _setAndInitializeImplementation(address implementation, bytes calldata callbackData) external payable onlyOwner { _setImplementation(implementation); bool success; bytes memory returnValue; (success, returnValue) = implementation.delegatecall(callbackData); require(success, "initialization callback failed"); } function _getImplementation() external view returns (address implementation) { bytes32 implementationPosition = IMPLEMENTATION_POSITION; assembly { implementation := sload(implementationPosition) } } function _setImplementation(address implementation) public onlyOwner { bytes32 implementationPosition = IMPLEMENTATION_POSITION; require(Address.isContract(implementation), "Invalid contract address"); assembly { sstore(implementationPosition, implementation) } emit ImplementationSet(implementation); } function _getOwner() public view returns (address owner) { bytes32 position = OWNER_POSITION; assembly { owner := sload(position) } } function _setOwner(address newOwner) private { require(newOwner != address(0), "owner cannot be 0"); bytes32 position = OWNER_POSITION; assembly { sstore(position, newOwner) } emit OwnerSet(newOwner); } } contract RandomProxy is Proxy {}
Contract ABI
[{"type":"function","stateMutability":"payable","payable":true,"outputs":[],"name":"_setAndInitializeImplementation","inputs":[{"type":"address","name":"implementation"},{"type":"bytes","name":"callbackData"}],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":"implementation"}],"name":"_getImplementation","inputs":[],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"_setImplementation","inputs":[{"type":"address","name":"implementation"}],"constant":false},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"_transferOwnership","inputs":[{"type":"address","name":"newOwner"}],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":"owner"}],"name":"_getOwner","inputs":[],"constant":true},{"type":"fallback","stateMutability":"payable","payable":true},{"type":"event","name":"OwnerSet","inputs":[{"type":"address","name":"owner","indexed":true}],"anonymous":false},{"type":"event","name":"ImplementationSet","inputs":[{"type":"address","name":"implementation","indexed":true}],"anonymous":false}]
Contract Creation Code
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Deployed ByteCode
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