Contract 0xF0b456250DC9990662a6F25808cC74A6d1131Ea9

 

Contract Overview

Balance:
0 BNB

BNB Value:
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Token:
Txn Hash
Block
From
To
Value [Txn Fee]
0x718861c7c3816d95ac312c908ddbf4c1a2b95964521f98c22992b763ef202bef73415412021-05-12 7:48:5710 mins ago0xd7b233b03e6a3e4be7d989387e5144495b9a7e64 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001098986
0x18cc8c89ad9bf264ac7859a037093351a13a6e4a29d92fcb897118cb62d592de73415122021-05-12 7:47:2512 mins ago0x8583c5bd9256ad3a0cfa421719916b0139137fe3 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.00125608
0x8765531f3e4496debb012b7ece21793757291b9e62525c1b1d0c4154cc716f9b73412552021-05-12 7:30:5428 mins ago0x0b799e2a5282616079447e1d21adfa182039b492 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001127287
0x7d880e35b8f3eb16adb630fa4a07c3849885137045bf950ea0dce703814186e873412232021-05-12 7:29:1130 mins ago0x206f8579ec1d0e5387269f364f10d0bc47911b66 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001098902
0x7dbaace43e444cbca0360bc6fa1450e6c4710a0fc8f7b8acb39d6897b2c8e39573411382021-05-12 7:24:1035 mins ago0xbb7cfcce3fcfe4214eeed0373b2479e1c4b559bf IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.00109907
0x0ab68113569daf98b30369800b7104b845f8c0c812c3cf747107ea600c5424c473411222021-05-12 7:23:0836 mins ago0xc366422dc9bd483e641adf42131bdfd5daec8534 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001203902
0x1168a57accd45f80e8cf3194c25533e37cb914fc1640531a3e8dc1af9666b37773409542021-05-12 7:12:4247 mins ago0x6726ae75dfba806a62470a1928be214e4a0cd706 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001022455
0xf892644456c18dd55420d3b09a0a3c6892c2a3a8f2aeae7b531997c7dda43a0c73408872021-05-12 7:08:2951 mins ago0x8783847b3c579fd98287453ba77bfb672fec4454 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001099154
0xbee75c37c44a26c99b9b16b4ec5d0bbeb6bae7d1e727db622d0647baddfe67c373408792021-05-12 7:07:5152 mins ago0xbd0850b830f1b442abf0b20c80d36616305b3243 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001022455
0x7984ee2b5984492fe72729423fb7f7be4d9b9fae8df56a10f61d68f3c2b7244e73407072021-05-12 6:55:571 hr 3 mins ago0xc6da9641a0f16042c2971f9a6f0bff64cb4c8bac IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001022455
0x384fc4d7b2aedf71c6119579ebb16756e4af0539e219cef4000782b41713812773406172021-05-12 6:50:251 hr 9 mins ago0xd7b233b03e6a3e4be7d989387e5144495b9a7e64 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001203818
0xdb24aca58e77229e8c800af2dab99bb656f9ed6e0ae5bfe1d070372452668de973405432021-05-12 6:45:461 hr 14 mins ago0x38b45fa6b0bedf8c9660a6e72eb1371e8295688f IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.00125608
0x9837dedec27da8edb53623b2f86cc407e46766af6b3cbd18d4cfc7f42c48f4f773404402021-05-12 6:39:351 hr 20 mins ago0x8583c5bd9256ad3a0cfa421719916b0139137fe3 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001255792
0xa9e17d2e12a3ad14e5fb49f22e1290692657919b74a1c769d56d650cf311854473404252021-05-12 6:38:381 hr 21 mins ago0x037bf6a1e7b137f824f46313317e033ffeceb613 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001127371
0x90cb697c8f10afd6ad0846ec9c0c66bbe78e05597190d723b33c3c656bcc89a573400642021-05-12 6:16:031 hr 43 mins ago0xc6da9641a0f16042c2971f9a6f0bff64cb4c8bac IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001022455
0x2aca410310cae0290e876260813cde28faeb4f41e08e7119774d13d6aad94eef73400552021-05-12 6:15:341 hr 44 mins ago0x037bf6a1e7b137f824f46313317e033ffeceb613 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.00109907
0x8ed44859e5a516929ddf5e63e6fe581823fa1234e464e518ee885dd0411043be73400512021-05-12 6:15:221 hr 44 mins ago0xa68642e483b1a49039678bee3ddfd0e0098365df IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.002416155
0xfc14c1b58f6cb8fdc3f8b87a376b804d83ba9247996b689c48b6df0fda58b98273398662021-05-12 6:04:451 hr 55 mins ago0xf4890fe8cdab6beeeea275cd3cb8b0fa0bda9abc IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001022455
0x21eca71e9b709b23d60e79ac3f54cb350a3c7171fc9b7c35d25fc438008da53273398162021-05-12 6:01:351 hr 58 mins ago0x2d2e56a6e892a68f5df742537e7af524630e111a IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001127287
0x324ad47a1b49daa5facaf5ca55f61ed232bd71bf072781370beeba75495d743173397142021-05-12 5:56:132 hrs 3 mins ago0xc6da9641a0f16042c2971f9a6f0bff64cb4c8bac IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.00109907
0x6096f69dd0ab15773f48a2bb5ffdb6cf83b23c90426ed40cde14a0a3e261887e73395892021-05-12 5:48:492 hrs 11 mins ago0x9e6a6b070b87c2111a5b232a5cde86d5104942db IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001127287
0xf672faaaeadefdc74b5f3412116cf504c21d798bacba4ac04e0f0e7c717b78ee73394842021-05-12 5:42:422 hrs 17 mins ago0x2d2e56a6e892a68f5df742537e7af524630e111a IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001127287
0x242b5eb426451d42ef1dc011969f31b7ec7954913e0187ff37422f08de7993f673393452021-05-12 5:34:282 hrs 25 mins ago0xaf04baa08596f651177471cf556e9943337266de IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.00109907
0x4749099223907b0ccb12239334dc5952833cd9fb10718b2299001ed5204a172773393132021-05-12 5:32:492 hrs 27 mins ago0x38264914c75013920803f6224b53503b095192b7 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.00109907
0x472ef53afaaf0387c9793feda9891085cb685d28c0fe30026d78799c8d3cd9a673391762021-05-12 5:24:552 hrs 34 mins ago0x18548ffc2c6120e479dcad83444143997a775df3 IN  0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB0.001127371
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0xbb41a64932780c954dc8b0d1108895f2cd55d33da9a04d195d1df9db6984845554710732021-03-07 11:46:3665 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0xbb41a64932780c954dc8b0d1108895f2cd55d33da9a04d195d1df9db6984845554710732021-03-07 11:46:3665 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x7faf9f7b2006124599cc4f8fb556a6d46015fefe0 BNB
0xbb41a64932780c954dc8b0d1108895f2cd55d33da9a04d195d1df9db6984845554710732021-03-07 11:46:3665 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x19dd70371a8fe50f1fa8ff8b4cfb091a41be548f0 BNB
0xbb41a64932780c954dc8b0d1108895f2cd55d33da9a04d195d1df9db6984845554710732021-03-07 11:46:3665 days 20 hrs ago 0x7faf9f7b2006124599cc4f8fb556a6d46015fefe 0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB
0x619731a0ba5c43f473c28986fb38fa446616c6e8dfa1d31c6487e29a2c42ea9454709422021-03-07 11:40:0365 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0x619731a0ba5c43f473c28986fb38fa446616c6e8dfa1d31c6487e29a2c42ea9454709422021-03-07 11:40:0365 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 PancakeSwap: CAKE Token0 BNB
0x619731a0ba5c43f473c28986fb38fa446616c6e8dfa1d31c6487e29a2c42ea9454709422021-03-07 11:40:0365 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0x619731a0ba5c43f473c28986fb38fa446616c6e8dfa1d31c6487e29a2c42ea9454709422021-03-07 11:40:0365 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x19dd70371a8fe50f1fa8ff8b4cfb091a41be548f0 BNB
0x619731a0ba5c43f473c28986fb38fa446616c6e8dfa1d31c6487e29a2c42ea9454709422021-03-07 11:40:0365 days 20 hrs ago 0x05185872898b6f94aa600177ef41b9334b1fa48b 0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB
0x38956af04731f48e82b6812044fa27feaccab8976322f24e0d7c838e3a07c50d54708222021-03-07 11:34:0365 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0x38956af04731f48e82b6812044fa27feaccab8976322f24e0d7c838e3a07c50d54708222021-03-07 11:34:0365 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 DAI Stablecoin0 BNB
0x38956af04731f48e82b6812044fa27feaccab8976322f24e0d7c838e3a07c50d54708222021-03-07 11:34:0365 days 20 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x19dd70371a8fe50f1fa8ff8b4cfb091a41be548f0 BNB
0x8e4570f82d32737d6b688a9d03388e77d15e2bf12d4807900901099a520fb25954699252021-03-07 10:49:1265 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0x8e4570f82d32737d6b688a9d03388e77d15e2bf12d4807900901099a520fb25954699252021-03-07 10:49:1265 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 DAI Stablecoin0 BNB
0x8e4570f82d32737d6b688a9d03388e77d15e2bf12d4807900901099a520fb25954699252021-03-07 10:49:1265 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0x8e4570f82d32737d6b688a9d03388e77d15e2bf12d4807900901099a520fb25954699252021-03-07 10:49:1265 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x19dd70371a8fe50f1fa8ff8b4cfb091a41be548f0 BNB
0x8e4570f82d32737d6b688a9d03388e77d15e2bf12d4807900901099a520fb25954699252021-03-07 10:49:1265 days 21 hrs ago 0x05185872898b6f94aa600177ef41b9334b1fa48b 0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB
0xfb8b37b5874e445bc89fad072e036a57bc60ae0ceeb65d833e9f2f4a91d3bfcf54695912021-03-07 10:32:3065 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0xfb8b37b5874e445bc89fad072e036a57bc60ae0ceeb65d833e9f2f4a91d3bfcf54695912021-03-07 10:32:3065 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 USD Coin: USDC Token0 BNB
0xfb8b37b5874e445bc89fad072e036a57bc60ae0ceeb65d833e9f2f4a91d3bfcf54695912021-03-07 10:32:3065 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x19dd70371a8fe50f1fa8ff8b4cfb091a41be548f0 BNB
0xd321313bede954e34f209a10a937dd89e7d0a265bd35880f25d182f659526f0154695312021-03-07 10:29:3065 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0xd321313bede954e34f209a10a937dd89e7d0a265bd35880f25d182f659526f0154695312021-03-07 10:29:3065 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 BUSD-T Stablecoin0 BNB
0xd321313bede954e34f209a10a937dd89e7d0a265bd35880f25d182f659526f0154695312021-03-07 10:29:3065 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x05185872898b6f94aa600177ef41b9334b1fa48b0 BNB
0xd321313bede954e34f209a10a937dd89e7d0a265bd35880f25d182f659526f0154695312021-03-07 10:29:3065 days 21 hrs ago 0xf0b456250dc9990662a6f25808cc74a6d1131ea9 0x19dd70371a8fe50f1fa8ff8b4cfb091a41be548f0 BNB
0xd321313bede954e34f209a10a937dd89e7d0a265bd35880f25d182f659526f0154695312021-03-07 10:29:3065 days 21 hrs ago 0x05185872898b6f94aa600177ef41b9334b1fa48b 0xf0b456250dc9990662a6f25808cc74a6d1131ea90 BNB
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Contract Source Code Verified (Exact Match)

Contract Name:
EternalStorageProxy

Compiler Version
v0.7.5+commit.eb77ed08

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, GNU GPLv3 license
/**
 *Submitted for verification at BscScan.com on 2021-02-12
*/

// File: contracts/upgradeability/EternalStorage.sol

pragma solidity 0.7.5;

/**
 * @title EternalStorage
 * @dev This contract holds all the necessary state variables to carry out the storage of any contract.
 */
contract EternalStorage {
    mapping(bytes32 => uint256) internal uintStorage;
    mapping(bytes32 => string) internal stringStorage;
    mapping(bytes32 => address) internal addressStorage;
    mapping(bytes32 => bytes) internal bytesStorage;
    mapping(bytes32 => bool) internal boolStorage;
    mapping(bytes32 => int256) internal intStorage;
}

// File: @openzeppelin/contracts/utils/Address.sol


pragma solidity ^0.7.0;

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

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

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

// File: contracts/upgradeability/Proxy.sol

pragma solidity 0.7.5;

/**
 * @title Proxy
 * @dev Gives the possibility to delegate any call to a foreign implementation.
 */
abstract contract Proxy {
    /**
     * @dev Tells the address of the implementation where every call will be delegated.
     * @return address of the implementation to which it will be delegated
     */
    function implementation() public view virtual returns (address);

    /**
     * @dev Fallback function allowing to perform a delegatecall to the given implementation.
     * This function will return whatever the implementation call returns
     */
    fallback() external payable {
        // solhint-disable-previous-line no-complex-fallback
        address _impl = implementation();
        require(_impl != address(0));
        assembly {
            /*
                0x40 is the "free memory slot", meaning a pointer to next slot of empty memory. mload(0x40)
                loads the data in the free memory slot, so `ptr` is a pointer to the next slot of empty
                memory. It's needed because we're going to write the return data of delegatecall to the
                free memory slot.
            */
            let ptr := mload(0x40)
            /*
                `calldatacopy` is copy calldatasize bytes from calldata
                First argument is the destination to which data is copied(ptr)
                Second argument specifies the start position of the copied data.
                    Since calldata is sort of its own unique location in memory,
                    0 doesn't refer to 0 in memory or 0 in storage - it just refers to the zeroth byte of calldata.
                    That's always going to be the zeroth byte of the function selector.
                Third argument, calldatasize, specifies how much data will be copied.
                    calldata is naturally calldatasize bytes long (same thing as msg.data.length)
            */
            calldatacopy(ptr, 0, calldatasize())
            /*
                delegatecall params explained:
                gas: the amount of gas to provide for the call. `gas` is an Opcode that gives
                    us the amount of gas still available to execution

                _impl: address of the contract to delegate to

                ptr: to pass copied data

                calldatasize: loads the size of `bytes memory data`, same as msg.data.length

                0, 0: These are for the `out` and `outsize` params. Because the output could be dynamic,
                        these are set to 0, 0 so the output data will not be written to memory. The output
                        data will be read using `returndatasize` and `returdatacopy` instead.

                result: This will be 0 if the call fails and 1 if it succeeds
            */
            let result := delegatecall(gas(), _impl, ptr, calldatasize(), 0, 0)
            /*

            */
            /*
                ptr current points to the value stored at 0x40,
                because we assigned it like ptr := mload(0x40).
                Because we use 0x40 as a free memory pointer,
                we want to make sure that the next time we want to allocate memory,
                we aren't overwriting anything important.
                So, by adding ptr and returndatasize,
                we get a memory location beyond the end of the data we will be copying to ptr.
                We place this in at 0x40, and any reads from 0x40 will now read from free memory
            */
            mstore(0x40, add(ptr, returndatasize()))
            /*
                `returndatacopy` is an Opcode that copies the last return data to a slot. `ptr` is the
                    slot it will copy to, 0 means copy from the beginning of the return data, and size is
                    the amount of data to copy.
                `returndatasize` is an Opcode that gives us the size of the last return data. In this case, that is the size of the data returned from delegatecall
            */
            returndatacopy(ptr, 0, returndatasize())

            /*
                if `result` is 0, revert.
                if `result` is 1, return `size` amount of data from `ptr`. This is the data that was
                copied to `ptr` from the delegatecall return data
            */
            switch result
                case 0 {
                    revert(ptr, returndatasize())
                }
                default {
                    return(ptr, returndatasize())
                }
        }
    }
}

// File: contracts/upgradeability/UpgradeabilityStorage.sol

pragma solidity 0.7.5;

/**
 * @title UpgradeabilityStorage
 * @dev This contract holds all the necessary state variables to support the upgrade functionality
 */
contract UpgradeabilityStorage {
    // Version name of the current implementation
    uint256 internal _version;

    // Address of the current implementation
    address internal _implementation;

    /**
     * @dev Tells the version name of the current implementation
     * @return uint256 representing the name of the current version
     */
    function version() external view returns (uint256) {
        return _version;
    }

    /**
     * @dev Tells the address of the current implementation
     * @return address of the current implementation
     */
    function implementation() public view virtual returns (address) {
        return _implementation;
    }
}

// File: contracts/upgradeability/UpgradeabilityProxy.sol

pragma solidity 0.7.5;




/**
 * @title UpgradeabilityProxy
 * @dev This contract represents a proxy where the implementation address to which it will delegate can be upgraded
 */
contract UpgradeabilityProxy is Proxy, UpgradeabilityStorage {
    /**
     * @dev This event will be emitted every time the implementation gets upgraded
     * @param version representing the version name of the upgraded implementation
     * @param implementation representing the address of the upgraded implementation
     */
    event Upgraded(uint256 version, address indexed implementation);

    /**
     * @dev Tells the address of the current implementation
     * @return address of the current implementation
     */
    function implementation() public view override(Proxy, UpgradeabilityStorage) returns (address) {
        return UpgradeabilityStorage.implementation();
    }

    /**
     * @dev Upgrades the implementation address
     * @param version representing the version name of the new implementation to be set
     * @param implementation representing the address of the new implementation to be set
     */
    function _upgradeTo(uint256 version, address implementation) internal {
        require(_implementation != implementation);

        // This additional check verifies that provided implementation is at least a contract
        require(Address.isContract(implementation));

        // This additional check guarantees that new version will be at least greater than the privios one,
        // so it is impossible to reuse old versions, or use the last version twice
        require(version > _version);

        _version = version;
        _implementation = implementation;
        emit Upgraded(version, implementation);
    }
}

// File: contracts/upgradeability/UpgradeabilityOwnerStorage.sol

pragma solidity 0.7.5;

/**
 * @title UpgradeabilityOwnerStorage
 * @dev This contract keeps track of the upgradeability owner
 */
contract UpgradeabilityOwnerStorage {
    // Owner of the contract
    address internal _upgradeabilityOwner;

    /**
     * @dev Tells the address of the owner
     * @return the address of the owner
     */
    function upgradeabilityOwner() public view returns (address) {
        return _upgradeabilityOwner;
    }

    /**
     * @dev Sets the address of the owner
     */
    function setUpgradeabilityOwner(address newUpgradeabilityOwner) internal {
        _upgradeabilityOwner = newUpgradeabilityOwner;
    }
}

// File: contracts/upgradeability/OwnedUpgradeabilityProxy.sol

pragma solidity 0.7.5;



/**
 * @title OwnedUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with basic authorization control functionalities
 */
contract OwnedUpgradeabilityProxy is UpgradeabilityOwnerStorage, UpgradeabilityProxy {
    /**
     * @dev Event to show ownership has been transferred
     * @param previousOwner representing the address of the previous owner
     * @param newOwner representing the address of the new owner
     */
    event ProxyOwnershipTransferred(address previousOwner, address newOwner);

    /**
     * @dev the constructor sets the original owner of the contract to the sender account.
     */
    constructor() {
        setUpgradeabilityOwner(msg.sender);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyUpgradeabilityOwner() {
        require(msg.sender == upgradeabilityOwner());
        _;
    }

    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function transferProxyOwnership(address newOwner) external onlyUpgradeabilityOwner {
        require(newOwner != address(0));
        emit ProxyOwnershipTransferred(upgradeabilityOwner(), newOwner);
        setUpgradeabilityOwner(newOwner);
    }

    /**
     * @dev Allows the upgradeability owner to upgrade the current version of the proxy.
     * @param version representing the version name of the new implementation to be set.
     * @param implementation representing the address of the new implementation to be set.
     */
    function upgradeTo(uint256 version, address implementation) public onlyUpgradeabilityOwner {
        _upgradeTo(version, implementation);
    }

    /**
     * @dev Allows the upgradeability owner to upgrade the current version of the proxy and call the new implementation
     * to initialize whatever is needed through a low level call.
     * @param version representing the version name of the new implementation to be set.
     * @param implementation representing the address of the new implementation to be set.
     * @param data represents the msg.data to bet sent in the low level call. This parameter may include the function
     * signature of the implementation to be called with the needed payload
     */
    function upgradeToAndCall(
        uint256 version,
        address implementation,
        bytes calldata data
    ) external payable onlyUpgradeabilityOwner {
        upgradeTo(version, implementation);
        // solhint-disable-next-line avoid-call-value
        (bool status, ) = address(this).call{ value: msg.value }(data);
        require(status);
    }
}

// File: contracts/upgradeability/EternalStorageProxy.sol

pragma solidity 0.7.5;



/**
 * @title EternalStorageProxy
 * @dev This proxy holds the storage of the token contract and delegates every call to the current implementation set.
 * Besides, it allows to upgrade the token's behaviour towards further implementations, and provides basic
 * authorization control functionalities
 */
// solhint-disable-next-line no-empty-blocks
contract EternalStorageProxy is EternalStorage, OwnedUpgradeabilityProxy {

}

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"ProxyOwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"version","type":"uint256"},{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferProxyOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"version","type":"uint256"},{"internalType":"address","name":"implementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"version","type":"uint256"},{"internalType":"address","name":"implementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"upgradeabilityOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://6707d8a32a5e8f60eb3e8e11738097a8d312e184eb6b79440ba4b78dba64a0af
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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