Contract 0x00f5D01D86008D14d04E29EFe88DffC75a9cAc47

Txn Hash Method
Block
From
To
Value [Txn Fee]
0x5c0208cc917d3030bd1cd49c42e8d6b9de3efe954b181d725dd8e82160c28a76Set Price For Sa...149869902022-05-21 12:52:1441 mins ago0x82386096e95ef64418bbc1aae6ecb83e50c87c1b IN  Chikn Farm: FarmLand Token0 AVAX0.0017280385 26.5
0x1fc65dbf13327d4d3da103cbccf96c1bff11c336e7c2fc80b6b419fb1a354734Buy Token149857842022-05-21 12:11:561 hr 21 mins ago0xd80e9f5ecf1bed9b7033f59dd106d1b5563be27e IN  Chikn Farm: FarmLand Token3.79 AVAX0.003197467752 27.2816825
0xc5d6de0fe71bf56c9ae6b06a441e53b01633b9a803234ceec7a83c9f63ee74efSet Price For Sa...149852462022-05-21 11:54:001 hr 39 mins ago0xce5f332d599f9e3a2d1a51d1f58861a4b8c8f504 IN  Chikn Farm: FarmLand Token0 AVAX0.00178361287 27.35225
0x5371082835d930a45a2eaa42c6d6c69f9d7d89bebb14b2ec919fe95dc140a6b5Set Price For Sa...149851952022-05-21 11:52:151 hr 41 mins ago0xce5f332d599f9e3a2d1a51d1f58861a4b8c8f504 IN  Chikn Farm: FarmLand Token0 AVAX0.001788356825 27.425
0xe5f101e179829c0d3784962796ea4e3922534e35044ab410e2e8983486b44c60Set Price For Sa...149851872022-05-21 11:51:561 hr 41 mins ago0xce5f332d599f9e3a2d1a51d1f58861a4b8c8f504 IN  Chikn Farm: FarmLand Token0 AVAX0.001788356825 27.425
0x519e0a98eab66a8757dc43590e6b2c109e7c3f9fd2461c497ef35d456ee7554bSet Price For Sa...149851762022-05-21 11:51:341 hr 42 mins ago0xce5f332d599f9e3a2d1a51d1f58861a4b8c8f504 IN  Chikn Farm: FarmLand Token0 AVAX0.00237415617 36.4084125
0x21b45142a1d39af57abf11d224a9d871e69533cdcc859d570e5f9c6b81e49016Set Price For Sa...149833572022-05-21 10:50:542 hrs 43 mins ago0x6dbb8109b561f87db656c918c86b51da0661956d IN  Chikn Farm: FarmLand Token0 AVAX0.001205872754 26.614419969
0xc9010b69594d252929b53d14d5cb29cbb82b62b64f4f86606edbc9922d0b48d3Set Price For Sa...149829392022-05-21 10:36:522 hrs 57 mins ago0xc0ebc847d547f6db0a914fc397a93a107332d77c IN  Chikn Farm: FarmLand Token0 AVAX0.001682506598 26.959358399
0x870f71617c8c017b5ff6f8a778c45e6e30ec40b84da5db50ad0b9a6a2043bd1cBuy Token149818622022-05-21 10:00:513 hrs 33 mins ago0xc233bbae3c8d4258fee414596fb7cb5c5701dc1e IN  Chikn Farm: FarmLand Token6.18 AVAX0.003105853 26.5
0x1ec233b35da2e3604d3ffe984bd21265e46f94d886480d6dce706eca61c7a9d0Set Price For Sa...149817532022-05-21 9:57:123 hrs 36 mins ago0x113cf169e2c21241adecde64f640f12ad388f78f IN  Chikn Farm: FarmLand Token0 AVAX0.0012006885 26.5
0x508e6390d75acbd596bfecdafbc623a3466e5bc4535e9817a4426d3fa2b7fcd9Set Price For Sa...149803342022-05-21 9:09:384 hrs 24 mins ago0x6b59918cfa9a4a360482b98e32bd0ebc61aee89e IN  Chikn Farm: FarmLand Token0 AVAX0.00122030118 26.94
0xf36197bd49f6fdd627c7c1b0086547d5b87e0d85e09d61935568d5c9fa12e785Set Price For Sa...149792512022-05-21 8:33:165 hrs ago0xc0ebc847d547f6db0a914fc397a93a107332d77c IN  Chikn Farm: FarmLand Token0 AVAX0.0012003705 26.5
0xd60bb6d9b2f57a159cf1d880c3ae93275fbe399286a99999ddc00443b6e9e995Set Price For Sa...149792252022-05-21 8:32:245 hrs 1 min ago0xc0ebc847d547f6db0a914fc397a93a107332d77c IN  Chikn Farm: FarmLand Token0 AVAX0.0017280385 26.5
0x4b27c1007a4e9d6d3f8d8859b5748ff44439835edd46e4db5e5f0572b4cee08aSet Price For Sa...149791682022-05-21 8:30:305 hrs 3 mins ago0xc0ebc847d547f6db0a914fc397a93a107332d77c IN  Chikn Farm: FarmLand Token0 AVAX0.0017280385 26.5
0x879e5d3fe450eace932de66678cb7b40e7427bd26f069dae41e5197a5332a472Set Price For Sa...149785482022-05-21 8:09:395 hrs 24 mins ago0xc0ebc847d547f6db0a914fc397a93a107332d77c IN  Chikn Farm: FarmLand Token0 AVAX0.0017280385 26.5
0x429bc8fcb7642ff080ffdda6676610bafc10a368108cb5adbde1a43c3bda8929Buy Token149764982022-05-21 7:00:586 hrs 32 mins ago0x358c9eb974d962fc54841f9388ed11ce80d0c3a2 IN  Chikn Farm: FarmLand Token4.4 AVAX0.003106261091 26.503481946
0xe9cc5da2ccd9344df2b95d1a77c8092e1853faec0d147b62425fbb49b14bddaaBuy Token149764662022-05-21 6:59:556 hrs 34 mins ago0x56079952bb17378145cbba4f1615e2cb45a9bca3 IN  Chikn Farm: FarmLand Token4.75 AVAX0.00312312144 26.647339131
0x0315af31d8f8168ce0a0b6ff8cd0a2438ed034cc929811fe09ecbce49e8585a6Set Price For Sa...149750412022-05-21 6:12:227 hrs 21 mins ago0x113cf169e2c21241adecde64f640f12ad388f78f IN  Chikn Farm: FarmLand Token0 AVAX0.001685964263 27.019957113
0xf502fc0125882f02ccfdc5342d82b99f5c7c251472fca252f86e45b23d73005aBuy Token149701372022-05-21 3:28:1710 hrs 5 mins ago0x967abc69f081c73f519511ff18b19cfca93c5004 IN  Chikn Farm: FarmLand Token4.8 AVAX0.00313736768 26.768892
0x757930d23ee71df4fc38ddb6431475e203d4bc025c4cd75d8b469e0ac163d35dSet Price For Sa...149693442022-05-21 3:01:4110 hrs 32 mins ago0x7bb3da375c7c3c6b16d558f077976e0852aff6e1 IN  Chikn Farm: FarmLand Token0 AVAX0.00178361287 27.35225
0xca58552160227dbf52beb315d14bf0e09875e9178c790efa0638845dfd6d4030Set Price For Sa...149657032022-05-21 0:59:4412 hrs 34 mins ago0xaea9587e27d10f70b83e2e84e136b31b4f5011b5 IN  Chikn Farm: FarmLand Token0 AVAX0.001701954926.1
0x3213a996dbb4d96ea954b28cbcea1c80a29c6587387d8fa81609eaf0ceb5a9c8Buy Token149656212022-05-21 0:56:5412 hrs 37 mins ago0xaea9587e27d10f70b83e2e84e136b31b4f5011b5 IN  Chikn Farm: FarmLand Token3.75 AVAX0.002612662226.1
0x08d3879fda1bfd5b81daab80969daacad423bcfc992dcc07beebca99c794c310Set Price For Sa...149646872022-05-21 0:25:4413 hrs 8 mins ago0x0386fa4a045617bff700e39a99647a7931e1cc3c IN  Chikn Farm: FarmLand Token0 AVAX0.001236105752 27.2816825
0x77ffb62f94020f71f07c63f011190ed74a722ed30d1e3fac2ec780984ca9a632Safe Transfer Fr...149631012022-05-20 23:32:4514 hrs 1 min ago0x4c9eaff07fd174eb98b6b76a45b7596626b27dbb IN  Chikn Farm: FarmLand Token0 AVAX0.001776235526.1
0x7c16a9739a62226fb50c12a1e1ccbb662b356dea1fabf4a3ed0fc1dbe228a8bdSet Price For Sa...149619352022-05-20 22:53:5414 hrs 40 mins ago0x2945af12d25ab23567867dd3b2facba60fbf4403 IN  Chikn Farm: FarmLand Token0 AVAX0.00178361287 27.35225
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OVERVIEW

10,000 algorithmically generated, unique chikn NFTs that lay $egg.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x1fc65dbf13327d4d3da103cbccf96c1bff11c336e7c2fc80b6b419fb1a354734149857842022-05-21 12:11:561 hr 21 mins ago Chikn Farm: FarmLand Token0x04a9e0bd6c76675c0f9c6360a9dd900da0a15c653.5626 AVAX
0x1fc65dbf13327d4d3da103cbccf96c1bff11c336e7c2fc80b6b419fb1a354734149857842022-05-21 12:11:561 hr 21 mins ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.2274 AVAX
0x870f71617c8c017b5ff6f8a778c45e6e30ec40b84da5db50ad0b9a6a2043bd1c149818622022-05-21 10:00:513 hrs 33 mins ago Chikn Farm: FarmLand Token0x17fb57199c170aec610ce1f4597e0a35595b61f45.8092 AVAX
0x870f71617c8c017b5ff6f8a778c45e6e30ec40b84da5db50ad0b9a6a2043bd1c149818622022-05-21 10:00:513 hrs 33 mins ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.3708 AVAX
0x429bc8fcb7642ff080ffdda6676610bafc10a368108cb5adbde1a43c3bda8929149764982022-05-21 7:00:586 hrs 32 mins ago Chikn Farm: FarmLand Token0x4f809effb315a91093169e17e6e1bf8f278892404.136 AVAX
0x429bc8fcb7642ff080ffdda6676610bafc10a368108cb5adbde1a43c3bda8929149764982022-05-21 7:00:586 hrs 32 mins ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.264 AVAX
0xe9cc5da2ccd9344df2b95d1a77c8092e1853faec0d147b62425fbb49b14bddaa149764662022-05-21 6:59:556 hrs 34 mins ago Chikn Farm: FarmLand Token0xaea9587e27d10f70b83e2e84e136b31b4f5011b54.465 AVAX
0xe9cc5da2ccd9344df2b95d1a77c8092e1853faec0d147b62425fbb49b14bddaa149764662022-05-21 6:59:556 hrs 34 mins ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.285 AVAX
0xf502fc0125882f02ccfdc5342d82b99f5c7c251472fca252f86e45b23d73005a149701372022-05-21 3:28:1710 hrs 5 mins ago Chikn Farm: FarmLand Token0xa89dd0b5bbb89fadfd893a53ba5d90316db5c6f64.512 AVAX
0xf502fc0125882f02ccfdc5342d82b99f5c7c251472fca252f86e45b23d73005a149701372022-05-21 3:28:1710 hrs 5 mins ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.288 AVAX
0x3213a996dbb4d96ea954b28cbcea1c80a29c6587387d8fa81609eaf0ceb5a9c8149656212022-05-21 0:56:5412 hrs 37 mins ago Chikn Farm: FarmLand Token0x0386fa4a045617bff700e39a99647a7931e1cc3c3.525 AVAX
0x3213a996dbb4d96ea954b28cbcea1c80a29c6587387d8fa81609eaf0ceb5a9c8149656212022-05-21 0:56:5412 hrs 37 mins ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.225 AVAX
0x3ec1786d135e1886a3bfa2b46032028ed01037cd04e94ccfa85f7f230c929fdc149515022022-05-20 17:07:0820 hrs 26 mins ago Chikn Farm: FarmLand Token0x52637541b5e4a36eea13c79ec07673b2e23af6292.82 AVAX
0x3ec1786d135e1886a3bfa2b46032028ed01037cd04e94ccfa85f7f230c929fdc149515022022-05-20 17:07:0820 hrs 26 mins ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.18 AVAX
0x83957f54ecf75b398f0b9db99ffba9c39f13fb49007b353cd4febc938d46e0b1149353222022-05-20 8:11:431 day 5 hrs ago Chikn Farm: FarmLand Token0x17fb57199c170aec610ce1f4597e0a35595b61f45.64 AVAX
0x83957f54ecf75b398f0b9db99ffba9c39f13fb49007b353cd4febc938d46e0b1149353222022-05-20 8:11:431 day 5 hrs ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.36 AVAX
0x9221a590fef20cf8909236d19cf9918ed74d55c0c226c181cecd84eeab1adc12149236012022-05-20 1:39:411 day 11 hrs ago Chikn Farm: FarmLand Token0xf8459c1069b4010bd6b9edc2f63e9e93d7f5afc132.9 AVAX
0x9221a590fef20cf8909236d19cf9918ed74d55c0c226c181cecd84eeab1adc12149236012022-05-20 1:39:411 day 11 hrs ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a552.1 AVAX
0x9362647d3ca35f0615d5a853cf97fb9c1324e335556ad6eb356f1e7e0c6a8a62149213782022-05-20 0:26:261 day 13 hrs ago Chikn Farm: FarmLand Token0x4c35ec926b20d3640e08dceab91d714e9c6424513.666 AVAX
0x9362647d3ca35f0615d5a853cf97fb9c1324e335556ad6eb356f1e7e0c6a8a62149213782022-05-20 0:26:261 day 13 hrs ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.234 AVAX
0xbd8f6dd6c71008d17b1c545168baa4633e73a1ff0eb52e37b100f1dca5ffefaa149175962022-05-19 22:20:591 day 15 hrs ago Chikn Farm: FarmLand Token0x44f4d478cb1d4225b83fda680cbcda27844387466.58 AVAX
0xbd8f6dd6c71008d17b1c545168baa4633e73a1ff0eb52e37b100f1dca5ffefaa149175962022-05-19 22:20:591 day 15 hrs ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.42 AVAX
0x4643dc1f1d2698c555c69a9c0de1cb4470e2359bcc500ada614a49e168da8b24149166882022-05-19 21:50:391 day 15 hrs ago Chikn Farm: FarmLand Token0xfa0562b34a39e8827540f7811c463da766209aac4.7 AVAX
0x4643dc1f1d2698c555c69a9c0de1cb4470e2359bcc500ada614a49e168da8b24149166882022-05-19 21:50:391 day 15 hrs ago Chikn Farm: FarmLand Token 0x5a52b8035c755f81bc516c910e642781e2c10a550.3 AVAX
0x1f80a96534393bd8d16649d497a5002a7ab37620aed0ac23a589f3f588e65119149036242022-05-19 14:36:001 day 22 hrs ago Chikn Farm: FarmLand Token0x9e2111db92c404b2c630a11a6620b615d6e7f21a3.76 AVAX
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x9702230a8ea53601f5cd2dc00fdbc13d4df4a8c7

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at snowtrace.io on 2021-11-10
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

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

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

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

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









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





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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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





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

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

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

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

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

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


/**
 * @dev 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;
    }
}


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

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


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

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

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

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

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

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

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

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

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

Contract ABI

[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"admin_","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"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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Swarm Source

ipfs://93f028255035b61df476b13b9dba3c4f06f60e51b9b4caee31680b389aef327f
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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