Contract 0xCBCe172d7af2616804ab5b2494102dAeC47B2635 8

 

Contract Overview

Balance:
0.096658555078585264 Ether

EtherValue:
$123.52 (@ $1,277.87/ETH)

Token:
 
Txn Hash
Method
Block
From
To
Value
0x198b186e8d81f82c7da0146442a2e99bac237f12e848e81b3bce865dbe65930aRelease ERC20(pending)2022-11-27 19:31:424 days 20 hrs ago0x426dbed0922c55015db545b74594431481a41d42 IN 0xcbce172d7af2616804ab5b2494102daec47b26350 Ether(Pending)(Pending)
0x7aa90cf86669afe90bd2714a10b2156fe0998cd402a91e63e02b9b6639f3ed56Release ERC20(pending)2022-11-27 2:44:045 days 13 hrs ago0x426dbed0922c55015db545b74594431481a41d42 IN 0xcbce172d7af2616804ab5b2494102daec47b26350 Ether(Pending)(Pending)
0xc83b086076bf857cb68f840b13f066348421101216a4adb44115c1cc1453a52cRelease ERC20(pending)2022-11-27 2:37:165 days 13 hrs ago0x070fde993cabb653a3f444f7db52966f389fbb8d IN 0xcbce172d7af2616804ab5b2494102daec47b26350 Ether(Pending)(Pending)
0x03c61ad0ef9ca4162945dad5f37d75b5ded89d07ec7b1f113d2b3c5450bb0b42Release ERC20(pending)2022-11-27 2:27:175 days 13 hrs ago0x426dbed0922c55015db545b74594431481a41d42 IN 0xcbce172d7af2616804ab5b2494102daec47b26350 Ether(Pending)(Pending)
0x59cc994bf4f4b87ab25a528da729785acfa9559a1f41989e770e8a691067b3f0Release ERC20(pending)2022-11-27 2:27:135 days 13 hrs ago0x426dbed0922c55015db545b74594431481a41d42 IN 0xcbce172d7af2616804ab5b2494102daec47b26350 Ether(Pending)(Pending)
0xa714172aa8166371aaa1d14fe560ee277462deb00dffa57c6ea4e9f6f86811d3Release ERC20(pending)2022-11-20 2:26:3812 days 13 hrs ago0x070fde993cabb653a3f444f7db52966f389fbb8d IN 0xcbce172d7af2616804ab5b2494102daec47b26350 Ether(Pending)(Pending)
0x845e17f9aba86b7e620033f7cfe1ced566aeddd49651f9029c86d03113136699Deposit ERC20160974072022-12-02 13:25:232 hrs 48 mins ago0xd54e4f8a55247487dd7c8c59f14ee5c0c2889477 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00097619 11.89816334
0xbe022e2fbb635917a300c8202267566ca55167cfa73f96eebab8d56beda222deDeposit ERC20160971772022-12-02 12:39:113 hrs 34 mins ago0xd54e4f8a55247487dd7c8c59f14ee5c0c2889477 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00096773 11.79677962
0x50f6719060ca57ff48dd15a31c345af978f70cd0ee42cc1242193339bbd527fdRelease ERC20160970892022-12-02 12:21:233 hrs 52 mins ago0x88f859db067c45b114897db6920f3e4a61a5ca66 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00238545 11.59270173
0xdab66f9f421bd1f285bc41ac40bf9e240d26ee476d80190b37a30b0e8d61292bRelease ERC20160965022022-12-02 10:23:235 hrs 50 mins ago0x88f859db067c45b114897db6920f3e4a61a5ca66 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00275841 12.27490786
0x242d3ccd91e7918c159a4e82f35d25ff8cde6a6bf23c823d10d66f0a7e9541bcDeposit ERC20160961412022-12-02 9:10:597 hrs 2 mins ago0x88f859db067c45b114897db6920f3e4a61a5ca66 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00106173 12.59282219
0x1c19c91468af1973dfa39fa4f8113afc3635b8061f809d65215ae635532d2ca1Release ERC20160949782022-12-02 5:17:4710 hrs 55 mins ago0xd911f2307a3c39cdeb6bf08fae509b800b18b149 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00263448 11.74234921
0x17bde5355d59e6affedbd21724ef6fbac636dd962dad86c2bd13250c5e34bc30Deposit ERC20160933102022-12-01 23:42:3516 hrs 31 mins ago0xd293abd7e9b9f34b63b201f3cceeff0525c5c67a IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00100495 11.96305668
0x0fe7311be8cde477cec3497cd9999ed509dd32f3b774278ae704e4c4e149954aDeposit ERC20160919292022-12-01 19:05:3521 hrs 8 mins ago0xd7bb739060a742dd147168aba4f1b7c304759617 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00176227 20.99147265
0x7633e0f1db8eb1d452a7e696e24798c271d4125838c00a8cf29d55fbe12bdd38Deposit ERC20160918722022-12-01 18:53:4721 hrs 19 mins ago0xd7bb739060a742dd147168aba4f1b7c304759617 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00116268 13.84745941
0x889ee10030ce6fccde88ec33d17de677922c9debf803f2084f49aec338f2f2e6Deposit ERC20160900052022-12-01 12:38:111 day 3 hrs ago0xf742a2f08bb2b4044fc230c17f60351a3a6f8d37 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00093643 11.11809007
0x6cae8b24929e3aef27cc8db529c4711f93594f43e274c9d80c2e4a4b8c32613cDeposit ERC20160898882022-12-01 12:14:351 day 3 hrs ago0x29ea291097b18c8fb08fbb4e05f3f67ba68ab59e IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00101533 11.43036295
0x420b267f12d51cf1b33966b215cad10259bde8128dde738e305f673314ad8e11Deposit ERC20160898552022-12-01 12:07:591 day 4 hrs ago0xd54e4f8a55247487dd7c8c59f14ee5c0c2889477 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00117538 14.32797048
0xbbb092f6c6ceebcd413899c427643331b5efb28aa334481dd93c2ac4e805b296Deposit ERC20160889702022-12-01 9:09:471 day 7 hrs ago0x8fb290a9508a2e7367c864f9cdd685acaf820c84 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00089728 11.32694362
0x0aad1d26c36e0d9207064b05ad11bba0a3e72245ecea792f641beed721ce7963Release Native160886122022-12-01 7:57:591 day 8 hrs ago0xec1219f58a44efd4f3ada6ab7494282e693749f5 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00228214 10.79055457
0x2c1dc08a63745b494dd261fb4d9fca301ff229b75e65bb5f76cf1b0a86f56b7cDeposit ERC20160880872022-12-01 6:12:351 day 10 hrs ago0x88f859db067c45b114897db6920f3e4a61a5ca66 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00111328 13.25072747
0xe35c67462c758b9f2374d65278e0b80c0a86f7d5c981a59d0ec222101d526c0cDeposit ERC20160872302022-12-01 3:20:351 day 12 hrs ago0x3912e743e923a8788057629e49cc2f0d492f1cfc IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00096811 11.52279665
0xcf01bcde9029a13bf2fbcc062f9faa8cfb845e22dbe02a97d50c641be2835c1cDeposit ERC20160870202022-12-01 2:38:231 day 13 hrs ago0x88f859db067c45b114897db6920f3e4a61a5ca66 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00101682 12.10434478
0x99f582a71fddb1734955be93fe107850dea80e5be97cf51c984333823ab8a0e9Deposit ERC20160870182022-12-01 2:37:591 day 13 hrs ago0x88f859db067c45b114897db6920f3e4a61a5ca66 IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.00088104 10.48804125
0x48bf22b1f174fb4c99dd80296eefa635793757560e59dd9376fefaa16e604953Deposit ERC20160870152022-12-01 2:37:231 day 13 hrs ago0x9b0de5739e6c71ac8b1371cb8e450b41b26f451e IN  0xcbce172d7af2616804ab5b2494102daec47b26350 Ether0.0010184 12.12141855
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x0aad1d26c36e0d9207064b05ad11bba0a3e72245ecea792f641beed721ce7963160886122022-12-01 7:57:591 day 8 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b26350xec1219f58a44efd4f3ada6ab7494282e693749f50.00230555 Ether
0x0aad1d26c36e0d9207064b05ad11bba0a3e72245ecea792f641beed721ce7963160886122022-12-01 7:57:591 day 8 hrs ago Wrapped Ether 0xcbce172d7af2616804ab5b2494102daec47b26350.00230555 Ether
0x5cdaf158b898378daa6bd4c1efa3c9a7c0030d6b23d7e0878aab0001dfdf8565160840712022-11-30 16:43:591 day 23 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0001 Ether
0x1f334c7021b2cc642cc872400687dcd3f4c2a035b9c55985de15763676648616160727912022-11-29 2:53:353 days 13 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.001101 Ether
0x286ba9c935788102983a6c73b4257eddae274e2f3b35fedb541225b275229ba9160583912022-11-27 2:40:115 days 13 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0001 Ether
0x505b7f4df6c2fd826ae487ea23161618bd6d60526f1d7133194ad26342853cc7160347632022-11-23 19:25:118 days 20 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0125 Ether
0x3f77f7513a7f9486e4b8dc8d7bdfe7010bc90198ebab34a9425ba26e70ad595f160173752022-11-21 9:04:3511 days 7 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.001 Ether
0x08d73a2cd774033f4f265e0483b5e1850909d50addb5b8c970cb706de784020b159883632022-11-17 7:50:5915 days 8 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.00743623 Ether
0x825bbe3817b0651ce8b43f7d51a6eb7050c5f84f7cfe90fa8b5bc9e9d98dcf39159656222022-11-14 3:35:2318 days 12 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.00526298 Ether
0x04433de054aabf2bf0372761817e6a62917f8e4c21f32f651ba2eb20488ab9e8158980422022-11-04 17:07:3527 days 23 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b26350xaf1cdc67e03cddb41bc8272e49b5bb39c45af7c30.01866587 Ether
0x04433de054aabf2bf0372761817e6a62917f8e4c21f32f651ba2eb20488ab9e8158980422022-11-04 17:07:3527 days 23 hrs ago Wrapped Ether 0xcbce172d7af2616804ab5b2494102daec47b26350.01866587 Ether
0x6fb8a2ca032521abc96d363029bb1dfa20903e991e2ce8add653165caa5db4e9158729632022-11-01 4:59:1131 days 11 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0005 Ether
0xf6176e0ef8565e8c6370073ed5230a6245e19ffebec9dbeb81db5bd15aa009f6158617132022-10-30 15:15:4733 days 57 mins ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.001 Ether
0x4237eea5b8029ab49af08bdc4a950bce69b3c5e433f9ed793dc2c61592d59351158509882022-10-29 3:19:2334 days 12 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0024 Ether
0xeaf78f0e84b4b0c662af8c6a0f3cc0eb3da34bae56d37847ec31aa9f16f41745158086152022-10-23 5:07:2340 days 11 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b26350x79933353f32d2111b02342a8248da944f02664700.0014451 Ether
0xeaf78f0e84b4b0c662af8c6a0f3cc0eb3da34bae56d37847ec31aa9f16f41745158086152022-10-23 5:07:2340 days 11 hrs ago Wrapped Ether 0xcbce172d7af2616804ab5b2494102daec47b26350.0014451 Ether
0x30dace915d5c13d75396c663c7b27a4168e04a4d8e41387a6b133e16ff5368a8157706362022-10-17 21:53:4745 days 18 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0155 Ether
0x29b2f7318f676a229d42ba8c52d55fc517bdd1c3f4efeeb8a4f5a6d97ad18fa9157628352022-10-16 19:42:3546 days 20 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0003 Ether
0x858f52e21e476a9ff6b01e5f56770e96d53252de503c10e99c0944f4dc5ec3df155862822022-09-22 3:44:4771 days 12 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b26350xa372f4d324333fcb6df03595f7706dbc58d962a70.0029895 Ether
0x858f52e21e476a9ff6b01e5f56770e96d53252de503c10e99c0944f4dc5ec3df155862822022-09-22 3:44:4771 days 12 hrs ago Wrapped Ether 0xcbce172d7af2616804ab5b2494102daec47b26350.0029895 Ether
0xf7160ec48c77e588e672d629ef2b880d36966c3cc5e9c557cea252915aa251b3155744122022-09-20 11:31:3573 days 4 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b26350x8f9554091b166a89e52559274e8cc68b1d8be0ac0.0089468 Ether
0xf7160ec48c77e588e672d629ef2b880d36966c3cc5e9c557cea252915aa251b3155744122022-09-20 11:31:3573 days 4 hrs ago Wrapped Ether 0xcbce172d7af2616804ab5b2494102daec47b26350.0089468 Ether
0xc7bc8ed552c0adae660df120a1d839600bdece0cc8d6a0bcc901c8b6932b965b155175902022-09-11 23:24:0481 days 16 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b2635 Wrapped Ether0.0075 Ether
0x2cde4aff4ebaa5ae718d0762e1820798064743fde853616fb339fbd241c60c9b155053552022-09-09 22:48:4183 days 17 hrs ago 0xcbce172d7af2616804ab5b2494102daec47b26350xab4c38591fe983c079a05731f3a11f013f9463620.01417456 Ether
0x2cde4aff4ebaa5ae718d0762e1820798064743fde853616fb339fbd241c60c9b155053552022-09-09 22:48:4183 days 17 hrs ago Wrapped Ether 0xcbce172d7af2616804ab5b2494102daec47b26350.01417456 Ether
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x222222222291749de47895c0c0a9b17e4fca8268

Contract Name:
ERC1967Proxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2021-07-07
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        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 This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}


/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @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 Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal {
        address oldImplementation = _getImplementation();

        // Initial upgrade and setup call
        _setImplementation(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }

        // Perform rollback test if not already in progress
        StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot.getBooleanSlot(_ROLLBACK_SLOT);
        if (!rollbackTesting.value) {
            // Trigger rollback using upgradeTo from the new implementation
            rollbackTesting.value = true;
            Address.functionDelegateCall(
                newImplementation,
                abi.encodeWithSignature(
                    "upgradeTo(address)",
                    oldImplementation
                )
            );
            rollbackTesting.value = false;
            // Check rollback was effective
            require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades");
            // Finally reset to the new implementation and log the upgrade
            _setImplementation(newImplementation);
            emit Upgraded(newImplementation);
        }
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }

    /**
     * @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 Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(
            Address.isContract(newBeacon),
            "ERC1967: new beacon is not a contract"
        );
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }
}

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

/**
 * @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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(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);
            }
        }
    }
}

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

/**
 * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an
 * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.
 */
contract ProxyAdmin is Ownable {

    /**
     * @dev Returns the current implementation of `proxy`.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function getProxyImplementation(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
        // We need to manually run the static call since the getter cannot be flagged as view
        // bytes4(keccak256("implementation()")) == 0x5c60da1b
        (bool success, bytes memory returndata) = address(proxy).staticcall(hex"5c60da1b");
        require(success);
        return abi.decode(returndata, (address));
    }

    /**
     * @dev Returns the current admin of `proxy`.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function getProxyAdmin(TransparentUpgradeableProxy proxy) public view virtual returns (address) {
        // We need to manually run the static call since the getter cannot be flagged as view
        // bytes4(keccak256("admin()")) == 0xf851a440
        (bool success, bytes memory returndata) = address(proxy).staticcall(hex"f851a440");
        require(success);
        return abi.decode(returndata, (address));
    }

    /**
     * @dev Changes the admin of `proxy` to `newAdmin`.
     *
     * Requirements:
     *
     * - This contract must be the current admin of `proxy`.
     */
    function changeProxyAdmin(TransparentUpgradeableProxy proxy, address newAdmin) public virtual onlyOwner {
        proxy.changeAdmin(newAdmin);
    }

    /**
     * @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function upgrade(TransparentUpgradeableProxy proxy, address implementation) public virtual onlyOwner {
        proxy.upgradeTo(implementation);
    }

    /**
     * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See
     * {TransparentUpgradeableProxy-upgradeToAndCall}.
     *
     * Requirements:
     *
     * - This contract must be the admin of `proxy`.
     */
    function upgradeAndCall(TransparentUpgradeableProxy proxy, address implementation, bytes memory data) public payable virtual onlyOwner {
        proxy.upgradeToAndCall{value: msg.value}(implementation, data);
    }
}


/**
 * @dev Base contract for building openzeppelin-upgrades compatible implementations for the {ERC1967Proxy}. It includes
 * publicly available upgrade functions that are called by the plugin and by the secure upgrade mechanism to verify
 * continuation of the upgradability.
 *
 * The {_authorizeUpgrade} function MUST be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is ERC1967Upgrade {
    function upgradeTo(address newImplementation) external virtual {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallSecure(newImplementation, bytes(""), false);
    }

    function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallSecure(newImplementation, data, true);
    }

    function _authorizeUpgrade(address newImplementation) internal virtual;
}


abstract contract Proxiable is UUPSUpgradeable {
    function _authorizeUpgrade(address newImplementation) internal override {
        _beforeUpgrade(newImplementation);
    }

    function _beforeUpgrade(address newImplementation) internal virtual;
}

contract ChildOfProxiable is Proxiable {
    function _beforeUpgrade(address newImplementation) internal virtual override {}
}


/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _upgradeToAndCall(_logic, _data, false);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        return ERC1967Upgrade._getImplementation();
    }
}

/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is ERC1967Proxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
     */
    constructor(address _logic, address admin_, bytes memory _data) payable ERC1967Proxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _changeAdmin(admin_);
    }

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _getAdmin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @dev Returns the current admin.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address admin_) {
        admin_ = _getAdmin();
    }

    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address implementation_) {
        implementation_ = _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        _changeAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeToAndCall(newImplementation, bytes(""), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeToAndCall(newImplementation, data, true);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address) {
        return _getAdmin();
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}


// Kept for backwards compatibility with older versions of Hardhat and Truffle plugins.
contract AdminUpgradeabilityProxy is TransparentUpgradeableProxy {
    constructor(address logic, address admin, bytes memory data) payable TransparentUpgradeableProxy(logic, admin, data) {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_logic","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":"beacon","type":"address"}],"name":"BeaconUpgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://9b8470f06e8a3960c912103fc2be177edaad69584ee3c7d2809ee737e79408e7
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.