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Gas: 51 Gwei

Contract

0x778A13D3eeb110A4f7bb6529F99c000119a08E92
 

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Approve Delegati...179742572023-08-23 1:53:47218 days ago1692755627IN
Aave: DAI Stable Debt V2
0 ETH0.0008359616.21438516
Approve Delegati...165536402023-02-04 6:29:47418 days ago1675492187IN
Aave: DAI Stable Debt V2
0 ETH0.0009782218.97372709
Approve Delegati...165429592023-02-02 18:39:35419 days ago1675363175IN
Aave: DAI Stable Debt V2
0 ETH0.0022679443.99927936
Approve Delegati...165160122023-01-30 0:19:11423 days ago1675037951IN
Aave: DAI Stable Debt V2
0 ETH0.000788715.3012118
Approve Delegati...163831382023-01-11 11:01:11442 days ago1673434871IN
Aave: DAI Stable Debt V2
0 ETH0.0010632920.62850259
Approve Delegati...163170462023-01-02 5:37:47451 days ago1672637867IN
Aave: DAI Stable Debt V2
0 ETH0.0004979814.45729206
Approve Delegati...163170362023-01-02 5:35:47451 days ago1672637747IN
Aave: DAI Stable Debt V2
0 ETH0.0006690512.98297028
Approve Delegati...159541552022-11-12 13:12:47502 days ago1668258767IN
Aave: DAI Stable Debt V2
0 ETH0.0007415214.38598631
Approve Delegati...159417612022-11-10 19:39:35503 days ago1668109175IN
Aave: DAI Stable Debt V2
0 ETH0.0011854122.99230182
Approve Delegati...158078642022-10-23 2:36:47522 days ago1666492607IN
Aave: DAI Stable Debt V2
0 ETH0.0006510712.62824954
Approve Delegati...158014212022-10-22 5:01:35523 days ago1666414895IN
Aave: DAI Stable Debt V2
0 ETH0.0011644122.59031473
Approve Delegati...155891062022-09-22 13:13:35553 days ago1663852415IN
Aave: DAI Stable Debt V2
0 ETH0.000444518.62378356
Approve Delegati...155596442022-09-18 9:48:59557 days ago1663494539IN
Aave: DAI Stable Debt V2
0 ETH0.000276165.35773375
Approve Delegati...155410772022-09-15 19:10:11559 days ago1663269011IN
Aave: DAI Stable Debt V2
0 ETH0.0005983411.6027291
Approve Delegati...155223202022-09-12 18:13:09562 days ago1663006389IN
Aave: DAI Stable Debt V2
0 ETH0.0008465316.42317931
Approve Delegati...153373872022-08-14 3:36:19592 days ago1660448179IN
Aave: DAI Stable Debt V2
0 ETH0.000269235.22453653
Approve Delegati...153227342022-08-11 20:14:25594 days ago1660248865IN
Aave: DAI Stable Debt V2
0 ETH0.0007979915.48520766
Approve Delegati...153059382022-08-09 4:42:17597 days ago1660020137IN
Aave: DAI Stable Debt V2
0 ETH0.0007216314
Approve Delegati...152514912022-07-31 17:08:20605 days ago1659287300IN
Aave: DAI Stable Debt V2
0 ETH0.0018982636.83582971
Approve Delegati...152425092022-07-30 7:43:07607 days ago1659166987IN
Aave: DAI Stable Debt V2
0 ETH0.000274015.3172326
Approve Delegati...152422552022-07-30 6:41:32607 days ago1659163292IN
Aave: DAI Stable Debt V2
0 ETH0.000244624.74693552
Approve Delegati...151617502022-07-17 18:31:02619 days ago1658082662IN
Aave: DAI Stable Debt V2
0 ETH0.0014871828.85879234
Approve Delegati...150341412022-06-27 11:29:04640 days ago1656329344IN
Aave: DAI Stable Debt V2
0 ETH0.0015006129.11268534
Approve Delegati...149914982022-06-19 15:34:07648 days ago1655652847IN
Aave: DAI Stable Debt V2
0 ETH0.0022437843.53052433
Approve Delegati...148160422022-05-21 7:39:36677 days ago1653118776IN
Aave: DAI Stable Debt V2
0 ETH0.0010542720.45350873
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113671842020-12-01 14:22:021213 days ago1606832522  Contract Creation0 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
InitializableImmutableAdminUpgradeabilityProxy

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 6 : InitializableImmutableAdminUpgradeabilityProxy.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;

import './BaseImmutableAdminUpgradeabilityProxy.sol';
import '../../../dependencies/openzeppelin/upgradeability/InitializableUpgradeabilityProxy.sol';

/**
 * @title InitializableAdminUpgradeabilityProxy
 * @dev Extends BaseAdminUpgradeabilityProxy with an initializer function
 */
contract InitializableImmutableAdminUpgradeabilityProxy is
  BaseImmutableAdminUpgradeabilityProxy,
  InitializableUpgradeabilityProxy
{
  constructor(address admin) public BaseImmutableAdminUpgradeabilityProxy(admin) {}

  /**
   * @dev Only fall back when the sender is not the admin.
   */
  function _willFallback() internal override(BaseImmutableAdminUpgradeabilityProxy, Proxy) {
    BaseImmutableAdminUpgradeabilityProxy._willFallback();
  }
}

File 2 of 6 : BaseImmutableAdminUpgradeabilityProxy.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;

import '../../../dependencies/openzeppelin/upgradeability/BaseUpgradeabilityProxy.sol';

/**
 * @title BaseImmutableAdminUpgradeabilityProxy
 * @author Aave, inspired by the OpenZeppelin upgradeability proxy pattern
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks. The admin role is stored in an immutable, which
 * helps saving transactions costs
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract BaseImmutableAdminUpgradeabilityProxy is BaseUpgradeabilityProxy {
  address immutable ADMIN;

  constructor(address admin) public {
    ADMIN = admin;
  }

  modifier ifAdmin() {
    if (msg.sender == ADMIN) {
      _;
    } else {
      _fallback();
    }
  }

  /**
   * @return The address of the proxy admin.
   */
  function admin() external ifAdmin returns (address) {
    return ADMIN;
  }

  /**
   * @return The address of the implementation.
   */
  function implementation() external ifAdmin returns (address) {
    return _implementation();
  }

  /**
   * @dev Upgrade the backing implementation of the proxy.
   * Only the admin can call this function.
   * @param newImplementation Address of the new implementation.
   */
  function upgradeTo(address newImplementation) external ifAdmin {
    _upgradeTo(newImplementation);
  }

  /**
   * @dev Upgrade the backing implementation of the proxy and call a function
   * on the new implementation.
   * This is useful to initialize the proxied contract.
   * @param newImplementation Address of the new implementation.
   * @param data Data to send as msg.data in the low level call.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   */
  function upgradeToAndCall(address newImplementation, bytes calldata data)
    external
    payable
    ifAdmin
  {
    _upgradeTo(newImplementation);
    (bool success, ) = newImplementation.delegatecall(data);
    require(success);
  }

  /**
   * @dev Only fall back when the sender is not the admin.
   */
  function _willFallback() internal virtual override {
    require(msg.sender != ADMIN, 'Cannot call fallback function from the proxy admin');
    super._willFallback();
  }
}

File 3 of 6 : BaseUpgradeabilityProxy.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;

import './Proxy.sol';
import '../contracts/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 impl Address of the current implementation
   */
  function _implementation() internal override view returns (address impl) {
    bytes32 slot = IMPLEMENTATION_SLOT;
    //solium-disable-next-line
    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(
      Address.isContract(newImplementation),
      'Cannot set a proxy implementation to a non-contract address'
    );

    bytes32 slot = IMPLEMENTATION_SLOT;

    //solium-disable-next-line
    assembly {
      sstore(slot, newImplementation)
    }
  }
}

File 4 of 6 : Proxy.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.6.0;

/**
 * @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.
 */
abstract contract Proxy {
  /**
   * @dev Fallback function.
   * Implemented entirely in `_fallback`.
   */
  fallback() external payable {
    _fallback();
  }

  /**
   * @return The Address of the implementation.
   */
  function _implementation() internal virtual 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 {
    //solium-disable-next-line
    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 virtual {}

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

File 5 of 6 : Address.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;

/**
 * @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) {
    // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
    // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
    // for accounts without code, i.e. `keccak256('')`
    bytes32 codehash;
    bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
    // solhint-disable-next-line no-inline-assembly
    assembly {
      codehash := extcodehash(account)
    }
    return (codehash != accountHash && codehash != 0x0);
  }

  /**
   * @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');
  }
}

File 6 of 6 : InitializableUpgradeabilityProxy.sol
// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;

import './BaseUpgradeabilityProxy.sol';

/**
 * @title InitializableUpgradeabilityProxy
 * @dev Extends BaseUpgradeabilityProxy with an initializer for initializing
 * implementation and init data.
 */
contract InitializableUpgradeabilityProxy is BaseUpgradeabilityProxy {
  /**
   * @dev Contract initializer.
   * @param _logic Address of the initial implementation.
   * @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
   * It should include the signature and the parameters of the function to be called, as described in
   * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
   * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
   */
  function initialize(address _logic, bytes memory _data) public payable {
    require(_implementation() == address(0));
    assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
    _setImplementation(_logic);
    if (_data.length > 0) {
      (bool success, ) = _logic.delegatecall(_data);
      require(success);
    }
  }
}

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

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"admin","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"initialize","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","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)

000000000000000000000000311bb771e4f8952e6da169b425e7e92d6ac45756

-----Decoded View---------------
Arg [0] : admin (address): 0x311Bb771e4F8952E6Da169b425E7e92d6Ac45756

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000311bb771e4f8952e6da169b425e7e92d6ac45756


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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.