Contract 0xefc73c41ef829c0b87e3245acf033b867ccd0f84 1

Txn Hash Method
Block
From
To
Value [Txn Fee]
0x71ee2a61a3fc32d4a65f8be0560240431edfed3bc3a2bffafe24a58c09ac5f52Safe Transfer Fr...134796562024-04-14 15:38:575 hrs 42 mins ago0xf899f0e08e54db2cc51df45f1e70dbaae2bb32de IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.450497849 5,048.5
0x0d6971489606cc2cb2d81e0d3a54c97c043ef4c763f503026f452e48b29fe584Safe Transfer Fr...134677162024-04-13 20:48:561 day 32 mins agoCronos ID Name mooneymike.cro IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.575087413159 5,052.249122885
0xd3ed2d4dab1b813078d3e876b87cfa349d97884c7fe9049ee1963210ce14ee74Safe Transfer Fr...134645322024-04-13 15:46:231 day 5 hrs ago0xfc70b244edcc0296401d6b0b5e676192b5ffc0e0 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.502467108 5,048.5
0xe67062864adf906d5a2940747f7c69d9a1a1cee31336938617032584cdf39976Set Approval For...134013492024-04-09 12:24:045 days 8 hrs ago0x48ed88a1177fddde6b338ac5f16684963238e6bd IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2602030375 5,001.5
0xb86953a22f82bb341b929f8d736431363675bbcb38faba1d76b1762e122f41860x6de7e034133957352024-04-09 3:35:565 days 17 hrs ago0x742303d91b61367bf2dc906b9b14f2c2a8a4babc IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.5585385850
0xf43e16a16cd4432ed2fc4fc02cf5966e9a598829d0234e601fcd784f235baa39Set Approval For...133597052024-04-06 19:04:568 days 2 hrs agoCronos ID Name 0xjosh.cro IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
0x8678ce474582d50f7372c2024be0d1c0cbd1d8e0851934b040717271c3437a5fSafe Transfer Fr...133434992024-04-05 17:39:589 days 3 hrs agoCronos ID Name bitmart.cro IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.502467108 5,048.5
0x7fb0766adc24a8a8ec13c03a70e4434ccc442c15262fdf5ec1e6abf1893cbf4bSafe Transfer Fr...133434932024-04-05 17:39:249 days 3 hrs agoCronos ID Name bitmart.cro IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.50232229476 5,047.045
0x432466499b64c24362338e2377b7a62a1ed43a9bb3f73067b889a8303d34441fSafe Transfer Fr...133434872024-04-05 17:38:519 days 3 hrs agoCronos ID Name bitmart.cro IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.536827199 5,048.5
0xe335e5f6baa1a523883d2757f8323e28859298f9a1cbe100e37332343144b5e2Set Approval For...132817732024-04-01 16:54:3813 days 4 hrs ago0x8abb106ebeb4eadb8ae04fee043ab6ef4d3b2d33 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
0x7cca82fb6bba12d757683598824a31bb3f66030302598b671853c4b56bab38bbSet Approval For...132817072024-04-01 16:48:2413 days 4 hrs ago0x4ad655c169f1cfc1e8ad70f1f1e1f9602f4427ea IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
0x9fd84fa696a2bcda93a1650ffe9d5118f6ad40b7f2f6efffa1c4c50a364b5509Set Approval For...132816762024-04-01 16:45:2713 days 4 hrs ago0x737d68fe1f13b3101d2117f7d94cdefc45c6f59d IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2602030375 5,001.5
0x0d2e1ee92863f697478777fa10aadc4b3e9f3a00b64403cac98e5d00366d4b4fSet Approval For...132815992024-04-01 16:38:1013 days 4 hrs ago0x679627b2cd65be959be86fef6370eb962be5fbc7 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
0x97e27ea75e3983fd4914ce799184c8233dd1302e86f4e81f666be08dab9f4dcfSet Approval For...132806142024-04-01 15:04:5513 days 6 hrs ago0x79e85416016aa5c55d0d018cf73329d9c582e0b5 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.260251160625 5,002.425
0x954548424790dd84d559b6493ee606d4d47620627f23210a40a5a4c5729b6fe1Set Approval For...132803752024-04-01 14:42:1913 days 6 hrs ago0x5e15a626b2bafa82ee7e31e94309494b36753d1b IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
0x80edf896c1473ca7c17d8586528130d9a11547f39aa77818c4ea45cf0091c4dcSet Approval For...132258772024-03-29 0:55:4016 days 20 hrs ago0xa47ded86241be1838217a1aec52ab1a45114dfa1 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
0x4c6e7f8cfb9574e0306b24ce200f16ff0f074e16539a2848dc53a4a864d27900Set Approval For...132119902024-03-28 3:06:0017 days 18 hrs ago0x15a231563fe7bcc3409f3411c4abc261db45bd53 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2602030375 5,001.5
0xc88c398b6ab4fae8f351445b752667c076afa3f06880e7c3076ad12c76e48dcbSet Approval For...131908182024-03-26 17:49:4519 days 3 hrs ago0xde00e148d7fc0335e6cb605ef731aff452e997b6 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.1762582805 5,048.5
0x4511b58824e5e68270b089dd01a8af1bda7a759775d3888b5fc1d49fce6d61e7Set Approval For...131767072024-03-25 19:35:0520 days 1 hr ago0x6e8fe8de45eb4afd85f56b8dd01e46f02f1073b3 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.1520254805 5,048.5
0xdaebb32bc6ddde8b3ce6669295513bb9e301b3a3b5db43545fe74e64f79cb0c6Set Approval For...131766992024-03-25 19:34:2020 days 1 hr ago0x6e8fe8de45eb4afd85f56b8dd01e46f02f1073b3 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.1520254805 5,048.5
0x2af181d8bd1954a833985252e451cb3886f7254baf39449f198d1f3da2850f50Safe Transfer Fr...131550062024-03-24 9:31:5721 days 11 hrs ago0x6846cc45a6450ba8d3f565ae3145998aef10a69e IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.478031652 5,047
0xcafaecc378de3139ff1fc07a3bff8899ca0b265f623f6b4ed3a06953d1bcc42fSafe Transfer Fr...131481922024-03-23 22:51:5221 days 22 hrs ago0x9f049104fe8aa985730f1cc9052da982a977be13 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.47837640
0xaf9a0183430016e19b40360936029c61fbfe090b9f335e0ccc9a4ba1c1f64f43Set Approval For...131475022024-03-23 21:47:0121 days 23 hrs agoCronos ID Name leviathan.cro IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
0x0da6d0a98cab8f4ab20be313e06099e99e7287e82f8a3e998a16829e474d3fd6Set Approval For...131473252024-03-23 21:30:2821 days 23 hrs agoCronos ID Name labgaming.cro IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.262499090641 5,045.63365
0x06ac401d9ce0b2a8e02af120e3e3c5b0824c4514f95402c978488fa6c54421a0Set Approval For...131179292024-03-21 23:35:5123 days 21 hrs ago0x3e41a814a08c4b25edd947e4621c866a0e6d42b9 IN  0xefc73c41ef829c0b87e3245acf033b867ccd0f840 CRO0.2626482125 5,048.5
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Latest 12 internal transactions
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0xe711b87822a5a45ead198b9a74e404d2ac067f7b1b81ecb24ff7fa81cfcaedba33183162022-06-20 8:15:17664 days 13 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc79,964 CRO
0xe17c6ffca92673a2d41e71815fd55f904e195314da99c66defe86255385bc9e825431242022-04-29 9:42:58716 days 11 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc0.999999999999831108 CRO
0x903102bf175a18fd2af0214617f6fd59155bea2522a6e3179c9af53af7e321a125431082022-04-29 9:41:18716 days 11 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc168,892 CRO
0x3d9da221ce203f603ac9c997329d14515a3d7bd180848b9724807f59272a627325430652022-04-29 9:36:36716 days 11 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc0.000000000000168892 CRO
0xdc1b1125b59c2ad8d6efe19ae337cc810f67d407a1e74b4bda2692edf1d5daa123480252022-04-15 7:54:10730 days 13 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc551,668 CRO
0xc15cc3ce48ad2bb5e98ffd39d04b6c15daf04c9f0057ecf4d0065d0a2b56ad0122418932022-04-07 9:34:55738 days 11 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc332,764 CRO
0x8ae063f8377a160bceeb56c4686cfa08c1f4e9835b4a69e8fe55f03d2cf5851822417692022-04-07 9:22:04738 days 11 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc0.999999998999999995 CRO
0xada1a2d2c7faa9ae7d7fc977967e320f29131a201e219bc6f1f90798b20994e722417432022-04-07 9:19:29738 days 12 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc0.000000000999999995 CRO
0x949a01f8d7ec7c50c8a94c1b5086273ef531edc0c8e63f8807cd93e0d67a1f1722408202022-04-07 7:45:06738 days 13 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc5 CRO
0xd7bd7635a2d39d859121c7a9940ef7738e61555cc8a5e4390beaa383f3670fd322407762022-04-07 7:40:42738 days 13 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x38165444c73b6c5422a69c36deb57112f591b3b35 CRO
0x967005aed4defe73e0580525ec6d2e99f6b295cdc80957092588fa31ef8e4e3a22400612022-04-07 6:27:53738 days 14 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x742303d91b61367bf2dc906b9b14f2c2a8a4babc5 basecro
0xb1fca3bbb3886b17715fa5b33088b863a12b0f9567f93913b6d6bff59cd86c9322399932022-04-07 6:21:05738 days 15 hrs ago 0xefc73c41ef829c0b87e3245acf033b867ccd0f840x38165444c73b6c5422a69c36deb57112f591b3b35 basecro
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xc24205B12fB056822b2b2c42B5ee18272A0A8E74
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
ERC1967Proxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

/**
 *Submitted for verification at cronoscan.com on 2022-03-18
*/

// File contracts/proxy/Proxy.sol

// 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 {
    }
}


// File contracts/proxy/beacon/IBeacon.sol

pragma solidity ^0.8.0;

/**
 * @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 contracts/utils/Address.sol

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @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);
            }
        }
    }
}


// File contracts/utils/StorageSlot.sol

pragma solidity ^0.8.0;

/**
 * @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 contracts/proxy/ERC1967/ERC1967Upgrade.sol

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 {
        _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;
    }
}


// File contracts/proxy/ERC1967/ERC1967Proxy.sol

pragma solidity ^0.8.0;


/**
 * @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();
    }
}

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"}]

Deployed Bytecode

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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://9b8470f06e8a3960c912103fc2be177edaad69584ee3c7d2809ee737e79408e7
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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