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Contract

0x28b5a0e9C621a5BadaA536219b3a228C8168cf5d
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Deposit For Burn508662922026-01-24 19:19:5954 mins ago1769282399IN
Circle CCTP: Token Messenger V2
0 MON0.04716826102
Deposit For Burn508634622026-01-24 19:01:091 hr ago1769281269IN
Circle CCTP: Token Messenger V2
0 MON0.09441844102
Deposit For Burn508631212026-01-24 18:58:531 hr ago1769281133IN
Circle CCTP: Token Messenger V2
0 MON0.04716826102
Deposit For Burn508544192026-01-24 18:00:542 hrs ago1769277654IN
Circle CCTP: Token Messenger V2
0 MON0.04717194102
Deposit For Burn508528092026-01-24 17:50:092 hrs ago1769277009IN
Circle CCTP: Token Messenger V2
0 MON0.09441079102
Deposit For Burn508474202026-01-24 17:14:143 hrs ago1769274854IN
Circle CCTP: Token Messenger V2
0 MON0.0577625124.9
Deposit For Burn508466792026-01-24 17:09:173 hrs ago1769274557IN
Circle CCTP: Token Messenger V2
0 MON0.04624524100.0001
Deposit For Burn508450392026-01-24 16:58:223 hrs ago1769273902IN
Circle CCTP: Token Messenger V2
0 MON0.0471701102
Deposit For Burn508423912026-01-24 16:40:453 hrs ago1769272845IN
Circle CCTP: Token Messenger V2
0 MON0.03459271112.2
Deposit For Burn508406282026-01-24 16:28:593 hrs ago1769272139IN
Circle CCTP: Token Messenger V2
0 MON0.0308289100.000001
Deposit For Burn508406202026-01-24 16:28:563 hrs ago1769272136IN
Circle CCTP: Token Messenger V2
0 MON0.0314467102
Deposit For Burn508341712026-01-24 15:45:554 hrs ago1769269555IN
Circle CCTP: Token Messenger V2
0 MON0.04624344100.0001
Deposit For Burn508276712026-01-24 15:02:295 hrs ago1769266949IN
Circle CCTP: Token Messenger V2
0 MON0.09441477102
Deposit For Burn508238612026-01-24 14:37:015 hrs ago1769265421IN
Circle CCTP: Token Messenger V2
0 MON0.04717102
Deposit For Burn508226542026-01-24 14:28:565 hrs ago1769264936IN
Circle CCTP: Token Messenger V2
0 MON0.0625125
Deposit For Burn508208362026-01-24 14:16:475 hrs ago1769264207IN
Circle CCTP: Token Messenger V2
0 MON0.0625125
Deposit For Burn508201792026-01-24 14:12:236 hrs ago1769263943IN
Circle CCTP: Token Messenger V2
0 MON0.0625125
Deposit For Burn508081892026-01-24 12:52:137 hrs ago1769259133IN
Circle CCTP: Token Messenger V2
0 MON0.0471701102
Deposit For Burn508057512026-01-24 12:35:547 hrs ago1769258154IN
Circle CCTP: Token Messenger V2
0 MON0.0314915102.02983176
Deposit For Burn508051282026-01-24 12:31:447 hrs ago1769257904IN
Circle CCTP: Token Messenger V2
0 MON0.04624524100.0001
Deposit For Burn507961022026-01-24 11:31:258 hrs ago1769254285IN
Circle CCTP: Token Messenger V2
0 MON0.04721636102.10004247
Deposit For Burn507915272026-01-24 11:00:529 hrs ago1769252452IN
Circle CCTP: Token Messenger V2
0 MON0.04716826102
Deposit For Burn507884332026-01-24 10:40:119 hrs ago1769251211IN
Circle CCTP: Token Messenger V2
0 MON0.04717425102.005
Deposit For Burn507855162026-01-24 10:20:419 hrs ago1769250041IN
Circle CCTP: Token Messenger V2
0 MON0.04716826102
Deposit For Burn507847962026-01-24 10:15:529 hrs ago1769249752IN
Circle CCTP: Token Messenger V2
0 MON0.04716826102
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x28b5a0e9...C8168cf5d in HyperEVM Mainnet
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
AdminUpgradableProxy

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 100000 runs

Other Settings:
Default EvmVersion, Apache-2.0 license

Contract Source Code (Solidity)

/**
 *Submitted for verification at monadscan.com on 2025-12-14
*/

// SPDX-License-Identifier: Apache-2.0
pragma solidity <0.8.0 =0.7.6 >=0.6.0 >=0.6.2;

// lib/openzeppelin-contracts/contracts/utils/Address.sol

/**
 * @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);
            }
        }
    }
}

// lib/openzeppelin-contracts/contracts/proxy/Proxy.sol

/**
 * @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 {
    }
}

// lib/openzeppelin-contracts/contracts/proxy/UpgradeableProxy.sol

/**
 * @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.
 *
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @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) public payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            Address.functionDelegateCall(_logic, _data);
        }
    }

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @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 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal virtual {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");

        bytes32 slot = _IMPLEMENTATION_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}

// src/proxy/AdminUpgradableProxy.sol
/*
 * Copyright 2024 Circle Internet Group, Inc. All rights reserved.
 *

 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @title AdminUpgradeableProxy
 * @notice This contract combines an upgradeable proxy with an authorization
 * mechanism for administrative tasks.
 *
 * @dev Forked from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/8e0296096449d9b1cd7c5631e917330635244c37/contracts/proxy/TransparentUpgradeableProxy.sol#L1
 * Modifications (10/1/2024):
 * - Remove ifAdmin modifier from admin() and implementation() and updated natspec.
 * - Update admin() and implementation() functions to be view functions.
 * - Pin Solidity to 0.7.6.
 * - Remove constructor visibility specifier.
 * - Remove overriden _beforeFallback() implementation.
 * - Bump constants, modifiers, and event declarations above constructor for consistency.
 * - Use "AdminUpgradableProxy" in revert string
 */
contract AdminUpgradableProxy is UpgradeableProxy {
    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @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 private constant _ADMIN_SLOT =
        0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

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

    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data`.
     */
    constructor(
        address _logic,
        address admin_,
        bytes memory _data
    ) payable UpgradeableProxy(_logic, _data) {
        assert(
            _ADMIN_SLOT ==
                bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1)
        );
        _setAdmin(admin_);
    }

    /**
     * @dev Returns the current admin.
     */
    function admin() external view returns (address admin_) {
        admin_ = _admin();
    }

    /**
     * @dev Returns the current implementation.
     */
    function implementation() external view returns (address implementation_) {
        implementation_ = _implementation();
    }


    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     * @dev Only the admin can call this function; other callers are delegated
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        require(
            newAdmin != address(0),
            "AdminUpgradableProxy: new admin is the zero address"
        );
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     * @dev Only the admin can call this function; other callers are delegated
     */
    function upgradeTo(address newImplementation) external virtual ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @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.
     * @dev Only the admin can call this function; other callers are delegated
     */
    function upgradeToAndCall(
        address newImplementation,
        bytes calldata data
    ) external payable virtual ifAdmin {
        _upgradeTo(newImplementation);
        Address.functionDelegateCall(newImplementation, data);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;
        assembly {
            sstore(slot, newAdmin)
        }
    }
}

Contract Security Audit

Contract ABI

API
[{"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":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"admin_","type":"address"}],"stateMutability":"view","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":"view","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

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.