Address Details
contract
proxy
token

0x471EcE3750Da237f93B8E339c536989b8978a438

Token
Celo native asset (CELO)
Creator
0xe23a4c–2b2dee at 0x4c3e69–c21fe7
Implementation
GoldToken | 0xcb8710e072ac4700ee7ed0c63b2f2102366a7a39
Balance
359.765187593757026912 CELO ( )
Locked CELO Balance
0.00 CELO
Voting CELO Balance
0.00 CELO
Pending Unlocked Gold
0.00 CELO
Tokens
Fetching tokens...
Transactions
1,945,811 Transactions
Transfers
193 Transfers
Gas Used
66,457,471,738
Last Balance Update
24808709
Contract name:
GoldTokenProxy




Optimization enabled
false
Is a Proxy?
true




Implementation Name:
GoldToken
Compiler version
v0.5.8+commit.23d335f2




Verified at
2020-04-22T21:57:58.852093Z

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 GoldTokenProxy 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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