Contract 0xBD5ca837C759B429398dc55b643f1Dd8d0D72CbD 1

 
Txn Hash Method
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0x98b517bc47475826d459271660f4afa8ac869e33c7dc193cbdc6ad4499bbead3Swap Exact ETH F...222248552021-12-07 3:30:0128 mins ago0x8e02496cf6ead668f796cbe6a6401950e8c39974 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0.9 MATIC0.003324
0xf0757ac5bc80d140dd57b9a7d9fb0e43c2687ae2b2051cc11f08c3fa58c57759Add Liquidity ET...222246382021-12-07 3:22:3136 mins ago0x259b0c2e045bcc60bfe546171260020382801953 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd1 MATIC0.00446451
0x8337a72ab7fd34977b586557ba2594dca11f8413b168c598eb1b67e700c1170bAdd Liquidity222225802021-12-07 2:07:111 hr 51 mins ago0x34693cbdbb271ed31c0a0fa2546a7f1453183e60 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.000227235999
0xe5b241b72ff298819cf83d1ea5ff15fc64afa731cb1ceb28714ebc01a2871871Add Liquidity ET...222222802021-12-07 1:54:472 hrs 3 mins ago0xaff97cbe9d94703317138db5a07763024d72ab4a IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd1 MATIC0.00497751
0x68d73f60fc902e7347421105d7b51c7af176522de9773aa8ede07e2b0466d88dAdd Liquidity ET...222222562021-12-07 1:53:552 hrs 4 mins ago0xf5e3bd27c6ff34d0b5b4e6af39fe169a558014e2 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd1 MATIC0.00549051
0x496e52bf4172a0861814f94af970b1d27c696e005bd177d2444864f81ac55726Add Liquidity ET...222183002021-12-06 23:20:484 hrs 37 mins ago0x0b326ba4fbc9e7310544d30befc4252795159775 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0.5 MATIC0.00446451
0xdb6919d7a942a82c975d4e12ba00f93e729aa165c38660d45a0df93f73d2fd4cRemove Liquidity222178792021-12-06 23:03:424 hrs 55 mins ago0x196b473f7d74820029e269a98baf3517c463fa89 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.0048333
0xd05bc707364c98f503239ebd1e538ad2f60167d7ffad94acfadefe09c00605f2Swap Exact Token...222171822021-12-06 22:36:005 hrs 22 mins ago0xc87dc33fca11a5084c5553e762ca26d554ec126b IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.006480815
0x9f5148b46f0899f46b20b260879585ab5638b83e6eb48a953fbc1e363a62d84aRemove Liquidity222168732021-12-06 22:23:115 hrs 35 mins ago0x44265dae5c21110b0dfdd421503ce3e1ca3280a5 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.0084767
0xe5bf15d1c3a5af512f04a559e6ecd4e1f837292dfff2ec2a8701f293e453ae48Remove Liquidity222160902021-12-06 21:51:596 hrs 6 mins ago0x96591fffb548309c12894df2d6f2360b0911b612 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00701152
0xc266e1dde77223c1afaf5c7ff43cb1bdeba927ee09c9ca88e5acdcb7ea09c7ffAdd Liquidity222152582021-12-06 21:21:086 hrs 37 mins ago0x34693cbdbb271ed31c0a0fa2546a7f1453183e60 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00564021
0xcf06f591c58e5b299d4f2463486eb99e035e1eca909458e61ada8986fcd15a6cSwap Exact Token...222135642021-12-06 20:18:367 hrs 40 mins ago0x3eb83218438a315b34074ac6d97af980238d66c5 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00090717
0xd53fa2dff648330e898030808813a7e8fc82412fbdb5953112eb805edea3ca13Add Liquidity222135302021-12-06 20:17:287 hrs 41 mins ago0x973d1bf8a26b9b108860b21940ffde792b59f061 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.000539592
0x40f763248030d32315f802a801d8f1e44613b42131b205d5a86c45f17814d86eAdd Liquidity222125722021-12-06 19:43:018 hrs 15 mins ago0x973d1bf8a26b9b108860b21940ffde792b59f061 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00542409
0x5cb7465682e69bf9040279f8133c38ea1d1f8cbef75d871b4e21fd2123a5f99fSwap Exact ETH F...222124542021-12-06 19:37:598 hrs 20 mins ago0x973d1bf8a26b9b108860b21940ffde792b59f061 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd2 MATIC0.00199656
0x11fd4b53fa503e2fcb4432e9ac40f40844ba371564db173ac51f01c837854837Add Liquidity ET...222106762021-12-06 18:31:569 hrs 26 mins ago0x10bb8ab9aed0a46b788fc50a6066d28c39f214fe IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0.419887323811215 MATIC0.00497751
0x9a7cf3ca1d48a4e6fe0bd2b4fd43897111dd4f6f519af186fd17d99596155eafAdd Liquidity222100972021-12-06 18:09:319 hrs 49 mins ago0xbbdab34eef4989b0f98037daa38cc342fee173af IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00723164
0xfdd95a89fb192a1b6d8b60860363b362bc2f25dd44741489c9cfc5c959508e69Remove Liquidity222098592021-12-06 18:01:219 hrs 57 mins ago0xc67a9456d244493530c3a496f937b4b1d71ee56c IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00577164
0xb5c3a3d6d27e5df319c01a9fcbefb3a4d668c0a738db0f90742e6f5dfffdae23Add Liquidity222092232021-12-06 17:39:2910 hrs 19 mins ago0x469ed7347f8e2f7d3fed730040f02356dc01845f IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00467172
0x840033850a5dcee94a91a7e866decfbcc5ea6cc8e8f99e24c1d7da82eb09a3bcAdd Liquidity ET...222078382021-12-06 16:46:0811 hrs 12 mins ago0x2f67d476b14df3f2908cb30876625f0d2d05e64c IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0.001 MATIC0.01647153
0xdc669803b5a71935b5d804185e1f33e28b66a6b4ce691ee6e67c519f98fc099dRemove Liquidity222048072021-12-06 14:53:1913 hrs 5 mins ago0x10bb8ab9aed0a46b788fc50a6066d28c39f214fe IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00537369
0xc58449077ac2a5032f71e37f0e6ab68b565c7663c8ee732073c576726f81353fAdd Liquidity ET...222030932021-12-06 13:50:0714 hrs 8 mins ago0x2fc80642aee568ddcda75dd418b6111551198304 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd3 MATIC0.00446451
0x1ae655ed536f39f6d8a6cf022d3067f064b1b362045075720c7d5ef7f90e9b32Remove Liquidity...222030292021-12-06 13:47:5514 hrs 10 mins ago0x2fc80642aee568ddcda75dd418b6111551198304 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00516591
0x5b94206f712ffd8a5f517dd6918d24c3be6d499e74f40d81fe8a5c73ef8c8728Remove Liquidity222028902021-12-06 13:41:2314 hrs 17 mins ago0x0aff5e01193d502cf88797f5dcabc1d881be62ed IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.005552813
0x90cd959833dc268bab6d087b0453210da030e515bd0044599acb5c29366406b9Swap Exact ETH F...222013702021-12-06 12:40:1215 hrs 18 mins ago0x1dd19cfc54ee4d330060e2c7e8418c7c1b834e84 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd8 MATIC0.000992541
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0x98b517bc47475826d459271660f4afa8ac869e33c7dc193cbdc6ad4499bbead3222248552021-12-07 3:30:0128 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.9 MATIC
0xf0757ac5bc80d140dd57b9a7d9fb0e43c2687ae2b2051cc11f08c3fa58c57759222246382021-12-07 3:22:3136 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0xe5b241b72ff298819cf83d1ea5ff15fc64afa731cb1ceb28714ebc01a2871871222222802021-12-07 1:54:472 hrs 3 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x68d73f60fc902e7347421105d7b51c7af176522de9773aa8ede07e2b0466d88d222222562021-12-07 1:53:552 hrs 4 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x496e52bf4172a0861814f94af970b1d27c696e005bd177d2444864f81ac55726222183002021-12-06 23:20:484 hrs 37 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.5 MATIC
0x5cb7465682e69bf9040279f8133c38ea1d1f8cbef75d871b4e21fd2123a5f99f222124542021-12-06 19:37:598 hrs 20 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad92 MATIC
0x11fd4b53fa503e2fcb4432e9ac40f40844ba371564db173ac51f01c837854837222106762021-12-06 18:31:569 hrs 26 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.4198873238112153 MATIC
0x840033850a5dcee94a91a7e866decfbcc5ea6cc8e8f99e24c1d7da82eb09a3bc222078382021-12-06 16:46:0811 hrs 12 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.001 MATIC
0xc58449077ac2a5032f71e37f0e6ab68b565c7663c8ee732073c576726f81353f222030932021-12-06 13:50:0714 hrs 8 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad93 MATIC
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0xd76597c8d48d6a2d624174438d4ead8abbe973e6c20e07b2c9d8451f4dd8675e221885942021-12-06 4:20:5823 hrs 37 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
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0x2e42b9bbb96990e7dcee71e1e0527e8db31a80d000036d977c07676f166d4051221674372021-12-05 14:38:141 day 13 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.3 MATIC
0xf1f58128d394d684d7fef5eef83c3587cee03d825a41969c2418de0ba424bd8f221674072021-12-05 14:37:101 day 13 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.3 MATIC
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0xd237133831db47c396959830a24762b3b5c5193c4923d56344798db3e05a0da8221672732021-12-05 14:31:501 day 13 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.4 MATIC
0xc27fd4c36752e1d1d2bba42c9190fbd214b210f8a4ded1ba348d5d11b6660fc7221672372021-12-05 14:29:261 day 13 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.5 MATIC
0x819d28b9acd9db1ef0f54aaab0325dce6fed9a5ab47639624c38ea9b9988adf4221665492021-12-05 14:03:261 day 13 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x8efb29b8dc7a557f35141a1b3e8c7a0bcfac09e0d2161d34804389af04d21e0f221660152021-12-05 13:38:381 day 14 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad950 MATIC
0x3c7ec647a822a0e9d8b03380b6e282846cd14db30ef6d7bf7a2b72755bf0040b221659282021-12-05 13:35:401 day 14 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad920 MATIC
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x5841565Bd231a868e47347d9749eF06AF5cA0970

Contract Name:
TransparentUpgradeableProxy

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 polygonscan.com on 2021-06-12
*/

// SPDX-License-Identifier: MIT

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
        }
    }
}

/**
 * @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 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 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 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 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 Security Audit

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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Deployed ByteCode Sourcemap

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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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