Contract 0x679b11E0229959C1D3D27C9d20529E4C5DF7997c 1

Txn Hash
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0xb6d09a149446b3fd50aaff60fe27d53ca8e50c27425f80a93d3887ffa8c875e9Forge Batch107056092022-05-19 22:39:2111 hrs 17 mins ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.01218791218.7
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0xbaffcaa1d51cd3c9024f39aeed173dd906fa010b8b525e676538238ec2d4b30bForge Batch107010192022-05-19 3:29:331 day 6 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.016706157626.4
0x7bcb1ffcfd0de959fc0086735698e84c127b5254ce6bce7d6d4b94eac06b21c9Forge Batch106995822022-05-18 21:29:301 day 12 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.018570726929.7
0x7353a13b0782875417240b9b325b7379dab303a66e20425ccba16a177852ba41Add L1Transactio...106995552022-05-18 21:22:441 day 12 hrs ago0x7e74b1c938815e51840799adccae3e765c762d45 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c9.95 Ether0.000275552501 2.500000011
0xcc11cc088e3a0afa8a5c0ffe7689dae8192f3dc4de73f8990d32dffe5182e10cForge Batch106954372022-05-18 4:10:582 days 5 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.01723650527.5
0x704c87c9fcf7a8e21e47514a42aaa26e252806f0d43218ea211f33a123143d9bForge Batch106940012022-05-17 22:11:012 days 11 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.0173574527.5
0xc6f8ac5dd7dab3dfffda3775bee5c3763fa45dd8c85a269cd393302a4c0af5a5Add L1Transactio...106939752022-05-17 22:04:312 days 11 hrs ago0x7e74b1c938815e51840799adccae3e765c762d45 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0.05 Ether0.000270947501 2.500000011
0xb43a8d52bdc7637cf801020b3e897ab22c48f2d0474e25c146077aa288abd217Forge Batch106891472022-05-17 1:46:473 days 8 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.012442854619.8
0x26e0102b35da852ccc52c8e7e7bc5c7ef4bbdff65bb0b41766e391a546089260Forge Batch106877162022-05-16 19:46:413 days 14 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.014476354223.1
0xb6c44438a98d08b4c1e605b504cc9d0de7830b2763e696ded962f9d53a8cc926Add L1Transactio...106867222022-05-16 15:37:403 days 18 hrs ago0x03e1123beaf7529ecbbbb17658b55c4fead0b109 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0.04977679958 Ether0.000335330428 3.479144958
0x62a44cce8477d24c4f19aeb4847880d092591806e2a2bce694ce1ad852c35215Add L1Transactio...106864452022-05-16 14:28:173 days 19 hrs ago0x56bc1f8c54c299227b678188f10614785e43240f IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.001080180642 8.945150907
0xbe176d1b8d37c82fefcca7b277aac9941d4e011926234591e61be9af18a1e067Add L1Transactio...106862822022-05-16 13:47:213 days 20 hrs ago0x56bc1f8c54c299227b678188f10614785e43240f IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.000904152917 4.853756556
0xad8f03224d9ad408b912cf83a29ab5e547a79e573c5de73e745972be3df44f0fForge Batch106862802022-05-16 13:46:513 days 20 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.02430335638.5
0x544cb6739d8f1854588508045bc94a86c4f357b6e591edadd740e02d4f3bc7ebAdd L1Transactio...106862532022-05-16 13:40:063 days 20 hrs ago0x56bc1f8c54c299227b678188f10614785e43240f IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0.1 Ether0.000510579289 4.711053706
0xd24c46b35353cbf14301e39af89d0362f99f215d605093668ad7980548d59b37Forge Batch106820782022-05-15 20:02:174 days 13 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.042055461867.1
0xd0c1d67a59465c40b1c14311fc0b9f7dcdd0f8bb2d7e1366fe9c641959d76b4cForge Batch106806412022-05-15 14:02:144 days 19 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.02013464231.9
0xf7a73f48bf0de7ef3dfcfb922675145725d54a2fa8900400b535336ad431d7d1Add L1Transactio...106806152022-05-15 13:55:414 days 20 hrs ago0x37c2dd981ac291015dad1cf2d4e1eb524fc64e08 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c10 Ether0.00045856256 4.231101598
0xfadd2a905afeed2cbb5b716c727793572ab987bdc348dd0784af02b3eb02b18eForge Batch106784492022-05-15 4:49:255 days 5 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.010440754516.5
0x482b571716aef5702c4b7a676658c61d94e3ff831ef13409925b74928ee40b7dForge Batch106768552022-05-14 22:09:525 days 11 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.029166244846.2
0xa6799d36bbb4d1ba82bcf6e964a6c6426a88221bba4135478da7eb6b41966b3aAdd L1Transactio...106754792022-05-14 16:23:205 days 17 hrs ago0xf16247bd7fd6b317b03bb7c98d6937a81239bd18 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0.1 Ether0.000270968722 2.500195813
0x9281a5a757e7e6a6028e1e7a74b62ef1a6351800ff4c57e9a568c97d1d4586e1Forge Batch106754252022-05-14 16:09:495 days 17 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.019305255230.8
0x4e5896588a316f762c3b0d5b4281a5d02e5098f8c67f10b93b7528ddd5e78b1dForge Batch106739962022-05-14 10:09:435 days 23 hrs ago0x4fc28cd8d35b6fd644e5c1822d67609c11e137f2 IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0 Ether0.023385359837.4
0xe92a6658c34708f170974eff1041c284a727d62ab44380500aef730c02ff5361Add L1Transactio...106736232022-05-14 8:35:146 days 1 hr ago0x7d8afc16e2275db55b5118cfeafcdfd68fdffcdf IN  0x679b11e0229959c1d3d27c9d20529e4c5df7997c0.05 Ether0.000275522867 2.500003337
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Latest 25 internal transaction
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0xb6d09a149446b3fd50aaff60fe27d53ca8e50c27425f80a93d3887ffa8c875e9107056092022-05-19 22:39:2111 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0xb6d09a149446b3fd50aaff60fe27d53ca8e50c27425f80a93d3887ffa8c875e9107056092022-05-19 22:39:2111 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0xb6d09a149446b3fd50aaff60fe27d53ca8e50c27425f80a93d3887ffa8c875e9107056092022-05-19 22:39:2111 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x1dc4b451dfcd0e848881ede8c7a99978f00b13420 Ether
0xb6d09a149446b3fd50aaff60fe27d53ca8e50c27425f80a93d3887ffa8c875e9107056092022-05-19 22:39:2111 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0xb6d09a149446b3fd50aaff60fe27d53ca8e50c27425f80a93d3887ffa8c875e9107056092022-05-19 22:39:2111 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0xb6d09a149446b3fd50aaff60fe27d53ca8e50c27425f80a93d3887ffa8c875e9107056092022-05-19 22:39:2111 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0xce1e1f1e6ee004fbf3d07ef40347e57a7c58934e0 Ether
0x85c8acc4aca261e3e6e75f129b02d16ed01bd00c7834af12ac7761bb8712aa1f107041712022-05-19 16:39:0417 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0x85c8acc4aca261e3e6e75f129b02d16ed01bd00c7834af12ac7761bb8712aa1f107041712022-05-19 16:39:0417 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0x85c8acc4aca261e3e6e75f129b02d16ed01bd00c7834af12ac7761bb8712aa1f107041712022-05-19 16:39:0417 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x1dc4b451dfcd0e848881ede8c7a99978f00b13420 Ether
0x85c8acc4aca261e3e6e75f129b02d16ed01bd00c7834af12ac7761bb8712aa1f107041712022-05-19 16:39:0417 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0x85c8acc4aca261e3e6e75f129b02d16ed01bd00c7834af12ac7761bb8712aa1f107041712022-05-19 16:39:0417 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0x85c8acc4aca261e3e6e75f129b02d16ed01bd00c7834af12ac7761bb8712aa1f107041712022-05-19 16:39:0417 hrs 17 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0xce1e1f1e6ee004fbf3d07ef40347e57a7c58934e0 Ether
0x8b9dfed7a8eb645569f635fc9e7071845e082565e0897ecf14530a047d5e64f3107032482022-05-19 12:47:5521 hrs 8 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0x8b9dfed7a8eb645569f635fc9e7071845e082565e0897ecf14530a047d5e64f3107032482022-05-19 12:47:5521 hrs 8 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0x8b9dfed7a8eb645569f635fc9e7071845e082565e0897ecf14530a047d5e64f3107032482022-05-19 12:47:5521 hrs 8 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x1dc4b451dfcd0e848881ede8c7a99978f00b13420 Ether
0x8b9dfed7a8eb645569f635fc9e7071845e082565e0897ecf14530a047d5e64f3107032482022-05-19 12:47:5521 hrs 8 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0x8b9dfed7a8eb645569f635fc9e7071845e082565e0897ecf14530a047d5e64f3107032482022-05-19 12:47:5521 hrs 8 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0x8b9dfed7a8eb645569f635fc9e7071845e082565e0897ecf14530a047d5e64f3107032482022-05-19 12:47:5521 hrs 8 mins ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0xce1e1f1e6ee004fbf3d07ef40347e57a7c58934e0 Ether
0xbaffcaa1d51cd3c9024f39aeed173dd906fa010b8b525e676538238ec2d4b30b107010192022-05-19 3:29:331 day 6 hrs ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0xbaffcaa1d51cd3c9024f39aeed173dd906fa010b8b525e676538238ec2d4b30b107010192022-05-19 3:29:331 day 6 hrs ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0xbaffcaa1d51cd3c9024f39aeed173dd906fa010b8b525e676538238ec2d4b30b107010192022-05-19 3:29:331 day 6 hrs ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x1dc4b451dfcd0e848881ede8c7a99978f00b13420 Ether
0xbaffcaa1d51cd3c9024f39aeed173dd906fa010b8b525e676538238ec2d4b30b107010192022-05-19 3:29:331 day 6 hrs ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c0x00000000000000000000000000000000000000020 Ether
0xbaffcaa1d51cd3c9024f39aeed173dd906fa010b8b525e676538238ec2d4b30b107010192022-05-19 3:29:331 day 6 hrs ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
0xbaffcaa1d51cd3c9024f39aeed173dd906fa010b8b525e676538238ec2d4b30b107010192022-05-19 3:29:331 day 6 hrs ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0xce1e1f1e6ee004fbf3d07ef40347e57a7c58934e0 Ether
0x7bcb1ffcfd0de959fc0086735698e84c127b5254ce6bce7d6d4b94eac06b21c9106995822022-05-18 21:29:301 day 12 hrs ago 0x679b11e0229959c1d3d27c9d20529e4c5df7997c 0x0a8a6d65ad9046c2a57a5ca8bab2ae9c3345316d0 Ether
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xF66af346a08b144a6664654823c34F63100901B5

Contract Name:
AdminUpgradeabilityProxy

Compiler Version
v0.6.8+commit.0bbfe453

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 4 : AdminUpgradeabilityProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import './UpgradeabilityProxy.sol';

/**
 * @title AdminUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * 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 AdminUpgradeabilityProxy is UpgradeabilityProxy {
  /**
   * Contract constructor.
   * @param _logic address of the initial implementation.
   * @param _admin Address of the proxy administrator.
   * @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.
   */
  constructor(address _logic, address _admin, bytes memory _data) UpgradeabilityProxy(_logic, _data) public payable {
    assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
    _setAdmin(_admin);
  }

  /**
   * @dev Emitted when the administration has been transferred.
   * @param previousAdmin Address of the previous admin.
   * @param newAdmin Address of the new admin.
   */
  event AdminChanged(address previousAdmin, address newAdmin);

  /**
   * @dev Storage slot with the admin of the contract.
   * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
   * validated in the constructor.
   */

  bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

  /**
   * @dev Modifier to check whether the `msg.sender` is the admin.
   * If it is, it will run the function. Otherwise, it will delegate the call
   * to the implementation.
   */
  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 Changes the admin of the proxy.
   * Only the current admin can call this function.
   * @param newAdmin Address to transfer proxy administration to.
   */
  function changeAdmin(address newAdmin) external ifAdmin {
    require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
    emit AdminChanged(_admin(), newAdmin);
    _setAdmin(newAdmin);
  }

  /**
   * @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) payable external ifAdmin {
    _upgradeTo(newImplementation);
    (bool success,) = newImplementation.delegatecall(data);
    require(success);
  }

  /**
   * @return adm The admin slot.
   */
  function _admin() internal view returns (address adm) {
    bytes32 slot = ADMIN_SLOT;
    assembly {
      adm := sload(slot)
    }
  }

  /**
   * @dev Sets the address of the proxy admin.
   * @param newAdmin Address of the new proxy admin.
   */
  function _setAdmin(address newAdmin) internal {
    bytes32 slot = ADMIN_SLOT;

    assembly {
      sstore(slot, newAdmin)
    }
  }

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

File 2 of 4 : UpgradeabilityProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import './Proxy.sol';
import '@openzeppelin/contracts/utils/Address.sol';

/**
 * @title UpgradeabilityProxy
 * @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 UpgradeabilityProxy is Proxy {
  /**
   * @dev Contract constructor.
   * @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.
   */
  constructor(address _logic, bytes memory _data) public payable {
    assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
    _setImplementation(_logic);
    if(_data.length > 0) {
      (bool success,) = _logic.delegatecall(_data);
      require(success);
    }
  }  

  /**
   * @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;
    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;

    assembly {
      sstore(slot, newImplementation)
    }
  }
}

File 3 of 4 : Proxy.sol
// SPDX-License-Identifier: MIT

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 () payable external {
    _fallback();
  }

  /**
   * @dev Receive function.
   * Implemented entirely in `_fallback`.
   */
  receive () payable external {
    _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 {
    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 4 of 4 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @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) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @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");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

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

Contract ABI

[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"_admin","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"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":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","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"},{"stateMutability":"payable","type":"receive"}]

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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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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.