Contract 0x64CD353384109423a966dCd3Aa30D884C9b2E057 6

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x77c524b27d8ffc3bb36cd0aad13f6773b8977fb68538b3f747df94af7c478b4eDeposit For238003572022-01-16 20:45:5813 hrs 59 mins ago0x52e8d9b5ea184acfc154c433b36384233bda5e9a IN  0x64cd353384109423a966dcd3aa30d884c9b2e05740 MATIC0.0016513830
0x59ba9defdc8cca0ebc93103aedd435e2226b64a2683fae33249fa3dbcb89b4bdDeposit For237528862022-01-15 16:06:401 day 18 hrs ago0x52e8d9b5ea184acfc154c433b36384233bda5e9a IN  0x64cd353384109423a966dcd3aa30d884c9b2e05760 MATIC0.00935782170
0xe3be75f516b90a519d26d2463673695c5294a1e63d96371fc1332b438ec22b7dDeposit For237142142022-01-14 16:06:162 days 18 hrs ago0x94f510c328c85ca726e3d79cefc9e798af059b1e IN  0x64cd353384109423a966dcd3aa30d884c9b2e057100 MATIC0.0026773830
0x2f64ff8996a54cbcd1f859544bfd1bc6d80cc0fd89a048f3049c73725a595d0aDeposit For237069892022-01-14 11:29:212 days 23 hrs ago0x7bae63c4dbd39ec66669a1ef6e1cf6f747b71bdd IN  0x64cd353384109423a966dcd3aa30d884c9b2e057100 MATIC0.00294511833
0xd50fd8898d270dd2753c789c3f059ea6fe3ad14631b401a94ff7e9fa8126af38Deposit For237054012022-01-14 10:21:573 days 23 mins ago0x52e8d9b5ea184acfc154c433b36384233bda5e9a IN  0x64cd353384109423a966dcd3aa30d884c9b2e05752 MATIC0.00853213155
0xb12163d7ef5b2f9bb8a5801c08f504168dc0090c4550fadcaf9faae2e62a82f6Deposit For236591272022-01-13 5:08:004 days 5 hrs ago0xa372899d7fd00a5e26a3f02336169282653978d3 IN  0x64cd353384109423a966dcd3aa30d884c9b2e05715 MATIC0.0021643830
0xaf1a83e27686da6280c2474f1463d6d464cee0e2879218349b624f73f8df5c39Deposit For236038532022-01-11 18:32:125 days 16 hrs ago0x07d33c7763ca3f4a5e8356916be775f82e797e6f IN  0x64cd353384109423a966dcd3aa30d884c9b2e057100 MATIC0.002088995737.95
0xf7ef59eabf0f72730f971e551679e0a4ec02dd7844e849066de1775961f29785Deposit For236002052022-01-11 16:13:445 days 18 hrs ago0x52e8d9b5ea184acfc154c433b36384233bda5e9a IN  0x64cd353384109423a966dcd3aa30d884c9b2e05760 MATIC0.0016513830
0x9bc3b7ccb60065b0fffc45f0c9416e2226a7675ff6a001e6ddf7eabf83c4c51aDeposit For235963082022-01-11 13:48:505 days 20 hrs ago0xe9ea943b5faefcbce026f6d4ab8b26677fa4d53a IN  0x64cd353384109423a966dcd3aa30d884c9b2e05780 MATIC0.0026773830
0xae4b7c26f7a87500cd65f7503c06bbd273de974d19163092bc0a06e3432fd472Deposit For235889832022-01-11 9:13:096 days 1 hr ago0x9ffc7e523a0c9f633dac1df662fc284b1b668e0b IN  0x64cd353384109423a966dcd3aa30d884c9b2e057200 MATIC0.0016513830
0x48d0f4ea02a06b16a7e44d4bcd37670aadcc868058416a2ca7489eb70b99d0f6Deposit For235855652022-01-11 7:09:176 days 3 hrs ago0x47537237f137fbcb14a9e4c7cdd05b2b43495cbd IN  0x64cd353384109423a966dcd3aa30d884c9b2e0572,000 MATIC0.0007213410
0xa3ff762e03202603fdbd8cb533c3d8b32ba024c59632b382978b46e37147238bDeposit For235753222022-01-11 0:41:146 days 10 hrs ago0x52e8d9b5ea184acfc154c433b36384233bda5e9a IN  0x64cd353384109423a966dcd3aa30d884c9b2e05773 MATIC0.002752350
0x13dea24983283864991273cde0c8b29b91986acf238dc2f595e8f75b1224d42aDeposit For235625012022-01-10 16:24:076 days 18 hrs ago0xe51b2cfa9c2bf31f05cd3b4e7161940e9782d18d IN  0x64cd353384109423a966dcd3aa30d884c9b2e057100 MATIC0.0082569150
0xfc8bc021abd29a494adec6014c7db42a11c16294a90a98b6df8842a4319516a9Deposit For235560372022-01-10 12:01:436 days 22 hrs ago0x1e9e8f80e4808c331df509685d10d7708a08e8fa IN  0x64cd353384109423a966dcd3aa30d884c9b2e05750 MATIC0.0016513830
0x4b16c272c3e4ef613d385895f14835709f28b19ccf3e506c11e6ceea4256c2a4Deposit For235548612022-01-10 11:16:596 days 23 hrs ago0x57faa5f17fcbb1edb60bcae3bab609c179b6641f IN  0x64cd353384109423a966dcd3aa30d884c9b2e057150 MATIC0.02236526310
0x6bc6853ab81a17c82cba189c11abe43d13ac7bd7ffc69fc9a13ecbc531891b76Deposit For235539072022-01-10 10:39:537 days 5 mins ago0xad79e2ea4424781ec61c52cd2464f6ad525e2a5d IN  0x64cd353384109423a966dcd3aa30d884c9b2e0574,500 MATIC0.0016513830
0x40512171f434fac767f48dce753276b21ae258df5e7781305dae215da6f44e80Deposit For235484152022-01-10 7:11:387 days 3 hrs ago0xe51b2cfa9c2bf31f05cd3b4e7161940e9782d18d IN  0x64cd353384109423a966dcd3aa30d884c9b2e05730 MATIC0.0016513830
0x8ea4a3048b75dfa057256f041faee371716127b311ed1c64b2f3b7017dfe1b01Deposit For234936442022-01-08 21:17:388 days 13 hrs ago0x52e8d9b5ea184acfc154c433b36384233bda5e9a IN  0x64cd353384109423a966dcd3aa30d884c9b2e057370 MATIC0.0082569150
0x1ff8e924315075faca1c58ec6879521bdea326c2b444e9a48e0d7b3a3ed385deDeposit For234837822022-01-08 15:06:038 days 19 hrs ago0x52e8d9b5ea184acfc154c433b36384233bda5e9a IN  0x64cd353384109423a966dcd3aa30d884c9b2e0575 MATIC0.0026773830
0x880217680830e3b778998e071e95fb4325e8d1f1de4b0e576cdaf6f8447b2dddDeposit For234551762022-01-07 21:40:279 days 13 hrs ago0xad79e2ea4424781ec61c52cd2464f6ad525e2a5d IN  0x64cd353384109423a966dcd3aa30d884c9b2e0574,500 MATIC0.0016513830
0x200db92d3eb34c36272bd88b740b1f41fe8d75b3a25c0501d5c388a04de46047Deposit For234286042022-01-07 4:49:2110 days 5 hrs ago0xe51b2cfa9c2bf31f05cd3b4e7161940e9782d18d IN  0x64cd353384109423a966dcd3aa30d884c9b2e057450 MATIC0.0440368800
0xaa2caab794956216625245ee12e545c56a9e0d26951a0a585cae512d2979d284Deposit For234285592022-01-07 4:47:5110 days 5 hrs ago0xe51b2cfa9c2bf31f05cd3b4e7161940e9782d18d IN  0x64cd353384109423a966dcd3aa30d884c9b2e05730 MATIC0.0713968800
0x88dd7e25c3b97bb98b809230326987adf1c174f99dedb0f3dffcabb025a1c5d2Deposit For234283812022-01-07 4:39:2810 days 6 hrs ago0xe51b2cfa9c2bf31f05cd3b4e7161940e9782d18d IN  0x64cd353384109423a966dcd3aa30d884c9b2e05750 MATIC0.0440368800
0x736920c838123ddde519d424752cda30df4594341d119eb9e01adfc904643b4bDeposit For234073072022-01-06 15:29:4910 days 19 hrs ago0x05158d7a59fa8ac5007b3c8babaa216568fd32b3 IN  0x64cd353384109423a966dcd3aa30d884c9b2e0572,000 MATIC0.0385238700
0xc822d71829bef4f261da21e4e911ec0840cc6cac3a0dbd3ecc6234192dc72afaDeposit For233981352022-01-06 9:20:2711 days 1 hr ago0xad79e2ea4424781ec61c52cd2464f6ad525e2a5d IN  0x64cd353384109423a966dcd3aa30d884c9b2e0575,000 MATIC0.0110092200
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0x77c524b27d8ffc3bb36cd0aad13f6773b8977fb68538b3f747df94af7c478b4e238003572022-01-16 20:45:5813 hrs 59 mins ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093240 MATIC
0x59ba9defdc8cca0ebc93103aedd435e2226b64a2683fae33249fa3dbcb89b4bd237528862022-01-15 16:06:401 day 18 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093260 MATIC
0xe3be75f516b90a519d26d2463673695c5294a1e63d96371fc1332b438ec22b7d237142142022-01-14 16:06:162 days 18 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932100 MATIC
0x2f64ff8996a54cbcd1f859544bfd1bc6d80cc0fd89a048f3049c73725a595d0a237069892022-01-14 11:29:212 days 23 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932100 MATIC
0xd50fd8898d270dd2753c789c3f059ea6fe3ad14631b401a94ff7e9fa8126af38237054012022-01-14 10:21:573 days 23 mins ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093252 MATIC
0xb12163d7ef5b2f9bb8a5801c08f504168dc0090c4550fadcaf9faae2e62a82f6236591272022-01-13 5:08:004 days 5 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093215 MATIC
0xaf1a83e27686da6280c2474f1463d6d464cee0e2879218349b624f73f8df5c39236038532022-01-11 18:32:125 days 16 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932100 MATIC
0xf7ef59eabf0f72730f971e551679e0a4ec02dd7844e849066de1775961f29785236002052022-01-11 16:13:445 days 18 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093260 MATIC
0x9bc3b7ccb60065b0fffc45f0c9416e2226a7675ff6a001e6ddf7eabf83c4c51a235963082022-01-11 13:48:505 days 20 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093280 MATIC
0xae4b7c26f7a87500cd65f7503c06bbd273de974d19163092bc0a06e3432fd472235889832022-01-11 9:13:096 days 1 hr ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932200 MATIC
0x48d0f4ea02a06b16a7e44d4bcd37670aadcc868058416a2ca7489eb70b99d0f6235855652022-01-11 7:09:176 days 3 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b09322,000 MATIC
0xa3ff762e03202603fdbd8cb533c3d8b32ba024c59632b382978b46e37147238b235753222022-01-11 0:41:146 days 10 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093273 MATIC
0x13dea24983283864991273cde0c8b29b91986acf238dc2f595e8f75b1224d42a235625012022-01-10 16:24:076 days 18 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932100 MATIC
0xfc8bc021abd29a494adec6014c7db42a11c16294a90a98b6df8842a4319516a9235560372022-01-10 12:01:436 days 22 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093250 MATIC
0x4b16c272c3e4ef613d385895f14835709f28b19ccf3e506c11e6ceea4256c2a4235548612022-01-10 11:16:596 days 23 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932150 MATIC
0x6bc6853ab81a17c82cba189c11abe43d13ac7bd7ffc69fc9a13ecbc531891b76235539072022-01-10 10:39:537 days 5 mins ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b09324,500 MATIC
0x40512171f434fac767f48dce753276b21ae258df5e7781305dae215da6f44e80235484152022-01-10 7:11:387 days 3 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093230 MATIC
0x8ea4a3048b75dfa057256f041faee371716127b311ed1c64b2f3b7017dfe1b01234936442022-01-08 21:17:388 days 13 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932370 MATIC
0x1ff8e924315075faca1c58ec6879521bdea326c2b444e9a48e0d7b3a3ed385de234837822022-01-08 15:06:038 days 19 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b09325 MATIC
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0x200db92d3eb34c36272bd88b740b1f41fe8d75b3a25c0501d5c388a04de46047234286042022-01-07 4:49:2110 days 5 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b0932450 MATIC
0xaa2caab794956216625245ee12e545c56a9e0d26951a0a585cae512d2979d284234285592022-01-07 4:47:5110 days 5 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093230 MATIC
0x88dd7e25c3b97bb98b809230326987adf1c174f99dedb0f3dffcabb025a1c5d2234283812022-01-07 4:39:2810 days 6 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b093250 MATIC
0x736920c838123ddde519d424752cda30df4594341d119eb9e01adfc904643b4b234073072022-01-06 15:29:4910 days 19 hrs ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b09322,000 MATIC
0xc822d71829bef4f261da21e4e911ec0840cc6cac3a0dbd3ecc6234192dc72afa233981352022-01-06 9:20:2711 days 1 hr ago 0x64cd353384109423a966dcd3aa30d884c9b2e0570x9e1980070743cb86bdbe3ae1d01018c6e97b09325,000 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
DappGasTankProxy

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-10-12
*/

// Sources flattened with hardhat v2.6.4 https://hardhat.org

// File @openzeppelin/contracts/proxy/[email protected]

// 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 {
        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 {}
}


// File @openzeppelin/contracts/proxy/beacon/[email protected]





/**
 * @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);
}


// File @openzeppelin/contracts/utils/[email protected]





/**
 * @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;
        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");

        (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");

        (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");

        (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");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}


// File @openzeppelin/contracts/utils/[email protected]





/**
 * @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
        }
    }
}


// File @openzeppelin/contracts/proxy/ERC1967/[email protected]



pragma solidity ^0.8.2;



/**
 * @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._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
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 {
        _upgradeTo(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
            _upgradeTo(newImplementation);
        }
    }

    /**
     * @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 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);
        }
    }
}


// File @openzeppelin/contracts/proxy/ERC1967/[email protected]






/**
 * @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();
    }
}


// File @openzeppelin/contracts/proxy/transparent/[email protected]





/**
 * @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();
    }
}


// File contracts/7/gas-manager/gas-tank/DappGasTankProxy.sol




/**
 * @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 DappGasTankProxy is TransparentUpgradeableProxy {
    constructor (address _implementation,address _admin)
    TransparentUpgradeableProxy(_implementation,_admin,bytes("")) {
    }  
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_implementation","type":"address"},{"internalType":"address","name":"_admin","type":"address"}],"stateMutability":"nonpayable","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"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"admin_","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":"implementation_","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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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000003f4e4910d424b3ea32571f2dba2edc5b5ea45026000000000000000000000000621f18127133b591eadeea14f2fe95c7695bce61

-----Decoded View---------------
Arg [0] : _implementation (address): 0x3f4e4910d424b3ea32571f2dba2edc5b5ea45026
Arg [1] : _admin (address): 0x621f18127133b591eadeea14f2fe95c7695bce61

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000003f4e4910d424b3ea32571f2dba2edc5b5ea45026
Arg [1] : 000000000000000000000000621f18127133b591eadeea14f2fe95c7695bce61


Deployed ByteCode Sourcemap

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Swarm Source

ipfs://abe551ff17f672fa5a93b367134b2a36a91c57da353755520d37e3e2537e995a
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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