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Contract

0x8A0F6B8A53556bDCEdDb5C710bb8F27F4Bea33E7
 

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Withdraw119251992021-02-25 8:20:081397 days ago1614241208IN
0x8A0F6B8A...F4Bea33E7
0 ETH0.00744852155
Deposit119224522021-02-24 22:19:181398 days ago1614205158IN
0x8A0F6B8A...F4Bea33E7
0 ETH0.0196628200
Initialize Vault119214132021-02-24 18:22:071398 days ago1614190927IN
0x8A0F6B8A...F4Bea33E7
0 ETH0.00772214288
Initialize Vault119211122021-02-24 17:16:111398 days ago1614186971IN
0x8A0F6B8A...F4Bea33E7
0 ETH0.09970681366

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Contract Source Code Verified (Exact Match)

Contract Name:
VaultProxy

Compiler Version
v0.5.16+commit.9c3226ce

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 5 : VaultProxy.sol
pragma solidity 0.5.16;

import "./interface/IUpgradeSource.sol";
import "@openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol";

contract VaultProxy is BaseUpgradeabilityProxy {

  constructor(address _implementation) public {
    _setImplementation(_implementation);
  }

  /**
  * The main logic. If the timer has elapsed and there is a schedule upgrade,
  * the governance can upgrade the vault
  */
  function upgrade() external {
    (bool should, address newImplementation) = IUpgradeSource(address(this)).shouldUpgrade();
    require(should, "Upgrade not scheduled");
    _upgradeTo(newImplementation);

    // the finalization needs to be executed on itself to update the storage of this proxy
    // it also needs to be invoked by the governance, not by address(this), so delegatecall is needed
    (bool success, bytes memory result) = address(this).delegatecall(
      abi.encodeWithSignature("finalizeUpgrade()")
    );

    require(success, "Issue when finalizing the upgrade");
  }

  function implementation() external view returns (address) {
    return _implementation();
  }
}

File 2 of 5 : IUpgradeSource.sol
pragma solidity 0.5.16;

interface IUpgradeSource {
  function shouldUpgrade() external view returns (bool, address);
  function finalizeUpgrade() external;
}

File 3 of 5 : BaseUpgradeabilityProxy.sol
pragma solidity ^0.5.0;

import './Proxy.sol';
import '../utils/Address.sol';

/**
 * @title BaseUpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract BaseUpgradeabilityProxy is Proxy {
  /**
   * @dev Emitted when the implementation is upgraded.
   * @param implementation Address of the new implementation.
   */
  event Upgraded(address indexed implementation);

  /**
   * @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 Returns the current implementation.
   * @return Address of the current implementation
   */
  function _implementation() internal view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    assembly {
      impl := sload(slot)
    }
  }

  /**
   * @dev Upgrades the proxy to a new implementation.
   * @param newImplementation Address of the new implementation.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }

  /**
   * @dev Sets the implementation address of the proxy.
   * @param newImplementation Address of the new implementation.
   */
  function _setImplementation(address newImplementation) internal {
    require(OpenZeppelinUpgradesAddress.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");

    bytes32 slot = IMPLEMENTATION_SLOT;

    assembly {
      sstore(slot, newImplementation)
    }
  }
}

File 4 of 5 : Proxy.sol
pragma solidity ^0.5.0;

/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  function () payable external {
    _fallback();
  }

  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal view returns (address);

  /**
   * @dev Delegates execution to an implementation contract.
   * This is a low level function that doesn't return to its internal call site.
   * It will return to the external caller whatever the implementation returns.
   * @param implementation Address to delegate.
   */
  function _delegate(address implementation) internal {
    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 Function that is run as the first thing in the fallback function.
   * Can be redefined in derived contracts to add functionality.
   * Redefinitions must call super._willFallback().
   */
  function _willFallback() internal {
  }

  /**
   * @dev fallback implementation.
   * Extracted to enable manual triggering.
   */
  function _fallback() internal {
    _willFallback();
    _delegate(_implementation());
  }
}

File 5 of 5 : Address.sol
pragma solidity ^0.5.0;

/**
 * Utility library of inline functions on addresses
 *
 * Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/utils/Address.sol
 * This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts
 * when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the
 * build/artifacts folder) as well as the vanilla Address implementation from an openzeppelin version.
 */
library OpenZeppelinUpgradesAddress {
    /**
     * Returns whether the target address is a contract
     * @dev This function will return false if invoked during the constructor of a contract,
     * as the code is not actually created until after the constructor finishes.
     * @param account address of the account to check
     * @return whether the target address is a contract
     */
    function isContract(address account) internal view returns (bool) {
        uint256 size;
        // XXX Currently there is no better way to check if there is a contract in an address
        // than to check the size of the code at that address.
        // See https://ethereum.stackexchange.com/a/14016/36603
        // for more details about how this works.
        // TODO Check this again before the Serenity release, because all addresses will be
        // contracts then.
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_implementation","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"constant":true,"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"upgrade","outputs":[],"payable":false,"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)

0000000000000000000000009b3be0cc5dd26fd0254088d03d8206792715588b

-----Decoded View---------------
Arg [0] : _implementation (address): 0x9B3bE0cc5dD26fd0254088d03D8206792715588B

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000009b3be0cc5dd26fd0254088d03d8206792715588b


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