Contract 0xff970a61a04b1ca14834a43f5de4533ebddb5cc8 32

 
Circle has introduced Native USDC to Arbitrum. While Bridged USDC will function on Arbitrum, it won't be fungible with Circle's native smart contract.

Contract Overview

Arbitrum: USDC Token
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x14a38697aa3051a703a29350e7fe589714b341a02bfc0b78a1cd2294bc5e1f1bTransfer1919387712024-03-19 8:55:463 secs ago0xa51488d27eabfe7a66cde2abb64018b5a1b9ccb9 IN  Arbitrum: USDC Token0 ETH0.00000609 0.090402
0x47240b1766181411e55cf49eba994ba453bfc789545743de386a955dda08762eApprove1919387692024-03-19 8:55:454 secs ago0x1cc972ff969689873f8010bdd0cf3dc30618397e IN  Arbitrum: USDC Token0 ETH0.00000602 0.090156
0x5659c27b025de239e19281aa44575ff583b922d9a77919619c3cb5853f02a40fApprove1919387262024-03-19 8:55:3415 secs ago0x2060386d44ed4fb93953c8355cb5a773fda0eed8 IN  Arbitrum: USDC Token0 ETH0.00000604 0.08995
0xf95e7f6c69f06e40a58b3673932c844584aeb58052ce96d5fc32b9d15e07dd4aApprove1919387202024-03-19 8:55:3316 secs ago0x3d40ac1ff6c11ea200a86e9bc761c244149ba5c0 IN  Arbitrum: USDC Token0 ETH0.00000446 0.08988
0x14421074edf50f340b0a7a817cff259847ce46dbae36214ef1e52b44b168ec2eApprove1919386952024-03-19 8:55:2722 secs ago0x1cc972ff969689873f8010bdd0cf3dc30618397e IN  Arbitrum: USDC Token0 ETH0.00000587 0.087618
0xcb7a34504e693d4e64f371fd1c7e26edea47afc2e172a6e75bc5dcba8d0564b5Approve1919386872024-03-19 8:55:2524 secs ago0x6096963e69afadd3962a5954b912821e7f2adcb1 IN  Arbitrum: USDC Token0 ETH0.000003910.086998
0x0424708a1792a195a79d7e6a183debd3ab6dc8103ddfac3c7d378298f99891b2Transfer1919386692024-03-19 8:55:2029 secs ago0x627cf7fe2ee4e2406505e074c03b31e421a2ad25 IN  Arbitrum: USDC Token0 ETH0.00000473 0.085057
0xf1fe8981f7a4ddd6f33250facb20741ebd298ed75c5838291be7e3352d216962Approve1919386602024-03-19 8:55:1831 secs ago0x6b8ce2aaad5f09dac1633b73d91bc31e391ac590 IN  Arbitrum: USDC Token0 ETH0.0000056 0.08321
0xc975341831a5b185f062dc954b423979e2698a681d5a2e2ab3aa87578e7a5f4cApprove1919386342024-03-19 8:55:1138 secs ago0x7fdfd9133b3bdac66a1ca07da1a07090c54f7c5c IN  Arbitrum: USDC Token0 ETH0.00000545 0.080599
0x6ba9c73463b8dc40fc88c1ced3adaac6d0d2b42a79f4c7d04f69de1862a48b66Transfer1919386282024-03-19 8:55:1039 secs agoBybit: Hot Wallet IN  Arbitrum: USDC Token0 ETH0.000004450.079416
0xe14d42cfe6070fb472f239d25b2092e3797a89b2cfeea25f7f9889a5b6a682feTransfer1919386272024-03-19 8:55:1039 secs ago0x225802317e1ab01918bcd0f8b6e83e81ef9a53fa IN  Arbitrum: USDC Token0 ETH0.000004090.080056
0x0b73ed0b5f5b7a549daea2e98255d7dd47f89a32e8ef7376fc7dfbee5d97b91dApprove1919385662024-03-19 8:54:5455 secs ago0x5ec5c3fced761365d8948e5376360133fdb3799a IN  Arbitrum: USDC Token0 ETH0.00000499 0.072604
0x426cf4ce61fc55949e6adc7e952c2b49cb5828d22c8321f0df73829c2aa72c41Approve1919385662024-03-19 8:54:5455 secs ago0x6fec894926f7cfac030cc55704827c813ac91ce7 IN  Arbitrum: USDC Token0 ETH0.00000499 0.072604
0x237d8669d2dcc6e97bc8e9881225c0f05e7889c76659b6d2b2fc7e5c39404553Transfer1919385452024-03-19 8:54:491 min ago0xc0a12b169ad39cd94ba8a1f2068809a4636e383f IN  Arbitrum: USDC Token0 ETH0.000004620.061403
0xb21daf6e9d3106be9ef819f55450d0629502564b176f60702f4f80678b5e492fTransfer1919384462024-03-19 8:54:241 min ago0x0035aa0afa54b43b39b8909e5544d8c2ea89afbd IN  Arbitrum: USDC Token0 ETH0.00000303 0.049877
0xda334539cdf2879622d5e66a94d0675750f0a71a2a34710677d4ca9b04748eb1Approve1919384092024-03-19 8:54:151 min ago0x974ff4bc75f919f1cc2c45bddb4b79e85edc4a58 IN  Arbitrum: USDC Token0 ETH0.00000359 0.049614
0x2f3978085bc7626d51bc984cf07d70a652b07cceb596e0d1928b46b4631f2820Transfer1919383282024-03-19 8:53:551 min ago0x658f0fab62cd599a5734a8c81488d294e67f7fdf IN  Arbitrum: USDC Token0 ETH0.00000363 0.049859
0x975eec77e287175d46ef940b4d27720374bfa94aa845ed11a31b91924914b9d8Approve1919382872024-03-19 8:53:442 mins ago0xedafd4f69c7e00b0fc7481c3a9497d943839394e IN  Arbitrum: USDC Token0 ETH0.00000363 0.050076
0x71aa89e9bbf5eb15074e54ab30379e46c64caf7b52b0cb6e3ec84040fc53db54Approve1919382842024-03-19 8:53:442 mins ago0xe1c315b4dd560e6794f19d98f1e971cac3d56dfa IN  Arbitrum: USDC Token0 ETH0.000003630.050367
0x906a3d6f1dea1b5e2364e0df2476bda4b2a222e2126c5dd87953a8ea2fb2af37Approve1919382842024-03-19 8:53:442 mins ago0x71d02c7e0d83149badc910bcd71f49e4d293c120 IN  Arbitrum: USDC Token0 ETH0.000003620.050367
0xa32e58536dba3bdaf3625cc70ff8c05f5981d5b9db4962d55820031463961a9fApprove1919382352024-03-19 8:53:312 mins ago0x882360a0401fabfe6810e76d5eb923819dc4f1fe IN  Arbitrum: USDC Token0 ETH0.0000036 0.049614
0x64bdba88a1f3e18980c6a698562b89344f40826d90b0ffa6b6412ad124d3a24fApprove1919382352024-03-19 8:53:312 mins ago0x62fa772ff3957d37c42c66fd8be027d3230d6a14 IN  Arbitrum: USDC Token0 ETH0.0000036 0.049614
0x7af4dc20e92e0496e08353900662b9df74ced9aad10a5e7c082d2ecbf0bd637cTransfer1919382162024-03-19 8:53:272 mins agoBybit: Hot Wallet IN  Arbitrum: USDC Token0 ETH0.000003040.050292
0xa8d8878aef86778c575496b6e2abb8d1d71ca327d977ea03a42ea5d89a172bddTransfer1919381822024-03-19 8:53:182 mins agoOrbiter Finance: Bridge 2 IN  Arbitrum: USDC Token0 ETH0.00000298 0.048874
0xff5052a21f16e1ef4daaa60ca13f6586d9f3ed4c7d5b7d69310ce6143b13e17cApprove1919381672024-03-19 8:53:142 mins ago0xdeefb842588445ff42e7bcea0bd63b8c7b927df3 IN  Arbitrum: USDC Token0 ETH0.000003530.048679
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OVERVIEW

This is a bridged USDC token deployed by Arbitrum Foundation.

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago 0x308c5b91f63307439fdb51a9fa4dfc979e2ed6b0 Arbitrum: USDC Token0 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago 0x308c5b91f63307439fdb51a9fa4dfc979e2ed6b0 Arbitrum: USDC Token0 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago 0x64768a3a2453f1e8de9e43e92d65fc36e4c9872d Arbitrum: USDC Token0 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago 0x308c5b91f63307439fdb51a9fa4dfc979e2ed6b0 Arbitrum: USDC Token0 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Balancer: Vault Arbitrum: USDC Token0 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago 0x64768a3a2453f1e8de9e43e92d65fc36e4c9872d Arbitrum: USDC Token0 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago GMX: Vault Arbitrum: USDC Token0 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x981ad1d919adbf622679cdc2661492d7db025f5398a0d581567bf42cbb028ea3720866702023-03-21 10:18:48363 days 22 hrs ago GMX: Vault Arbitrum: USDC Token0 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago 0x527c0aff05b129a4d68b1fe2054f4c3eb3a81c56 Arbitrum: USDC Token0 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago 0x527c0aff05b129a4d68b1fe2054f4c3eb3a81c56 Arbitrum: USDC Token0 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago 0x527c0aff05b129a4d68b1fe2054f4c3eb3a81c56 Arbitrum: USDC Token0 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago 0x527c0aff05b129a4d68b1fe2054f4c3eb3a81c56 Arbitrum: USDC Token0 ETH
0x546e0806fda32aa6e3757b5ed8a3651b41439b1118f6ff8358a05b4906ba1bea720866702023-03-21 10:18:48363 days 22 hrs ago Arbitrum: USDC Token 0x1efb3f88bc88f03fd1804a5c53b7141bbef5ded80 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at Arbiscan.io on 2021-09-09
*/

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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


/**
 * @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.
 *
 * 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)
        }
    }
}


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

    /**
     * @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 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_ = _admin();
    }

    /**
     * @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 {
        require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    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.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    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;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }

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

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

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

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000001efb3f88bc88f03fd1804a5c53b7141bbef5ded8000000000000000000000000d570ace65c43af47101fc6250fd6fc63d1c22a86000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _logic (address): 0x1eFB3f88Bc88f03FD1804A5C53b7141bbEf5dED8
Arg [1] : admin_ (address): 0xd570aCE65C43af47101fC6250FD6fC63D1c22a86
Arg [2] : _data (bytes): 0x

-----Encoded View---------------


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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