Contract 0xfe7c30860d01e28371d40434806f4a8fcdd3a098 25

 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x19266843efccf098939ce4a3a7b351efd4af990605479221d80c415923303a2aTransfer781621932023-04-08 1:47:36380 days 9 hrs ago0x9bd6d43a1fa7f70efc7b3d81c1060f9ec30c7ce6 IN  LayerZero: Relayer0.00001 ETH0.0000268 0.1
0xc30dc4878b7a19ebb9c7d4fdda09028574c87ff1499748a5e3e4767b341847f60xea4fa6bf367646472022-11-10 0:16:46529 days 10 hrs agoLayer Zero: Executor IN  LayerZero: Relayer0 ETH0.000071980.1
0xba8b881e8c73eaa0f27a4271065383b646e6ba3c5f6688e756d51f429b64845e0xb8f8bad4233720872022-09-07 12:50:12592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000016850.1
0xa5614f8c6f1680f3a4f3b95ad2b0bebef6bd031cc7036d258b853b929078bd0bSet Pause233714492022-09-07 12:46:18592 days 22 hrs ago0x9f403140bc0574d7d36ea472b82daa1bbd4ef327 IN  LayerZero: Relayer0 ETH0.00001296 0.1
0xefcdaea527e95591d716c84bfc12e4f1e504e87b286fab54653948c0be0498510xb8f8bad4233713202022-09-07 12:45:23592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015730.1
0xe56ee252c734baf8123c72e058f7bb63533f36a472fe2f3559ad0c70fecbfbc80xb8f8bad4233713162022-09-07 12:45:21592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015730.1
0x2253486de293cb2e65a42d2cfacb1b85ac750d9c96ab792f92c3160c2ab054c20xb8f8bad4233713112022-09-07 12:45:18592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015730.1
0x181ec02775e5da65d3210fd27fe4e568059ffb522a4348fe4125330c2f296b360xb8f8bad4233705772022-09-07 12:40:32592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015280.1
0xac0961f9e9c6a8b97800843e8c1b051c0725d0c7e0ff2624a5379f8131a2c7450xb8f8bad4233705692022-09-07 12:40:29592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015280.1
0xe6ff52878b0e8655dc8d7080a7ae47541e6acd5e140b8e75dc51c4810be844db0xb8f8bad4233705642022-09-07 12:40:26592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015280.1
0xad2c9042d1d080943509f1d96cfda109a5836b9e356a9d6cf71b2a30785d96430xb8f8bad4233705562022-09-07 12:40:23592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015220.1
0xc36a8d1ba4196860eab8ab7b5995ea70db66c3204a009e14c51e37aec2455fee0xb8f8bad4233696652022-09-07 12:35:18592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015790.1
0x6003dfee33e3f596bb2d6882ffe5c6694f0b5ffd60d34d7438994ac2f1f90fad0xb8f8bad4233696582022-09-07 12:35:15592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015790.1
0x5656bd1c6dba1ff43782aab12c04b46369352b9c9df74e1b8d1a99ddd03474b10xb8f8bad4233696382022-09-07 12:35:10592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000015790.1
0x1e32062906b15096f8b37538382bfd91504207dcf090c4689b5b3c64a270ae5b0xac16d6ac233692452022-09-07 12:33:00592 days 22 hrs agoLayer Zero: Executor IN  LayerZero: Relayer0 ETH0.000087410.1
0x3eb90fbb07291f1f5e6a5d214ff76e05dc55c01e2cb25e8725004f2d4ac617000xb8f8bad4233688292022-09-07 12:30:15592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000014890.1
0x35faad5f1b3dda88f42ffefe183046b79ccb017090c8ebb32f3f33fe98b209240xb8f8bad4233688152022-09-07 12:30:10592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000014890.1
0xac6b3c718b395fd703a217dde7f90e02b2cdc57471c4da872e2579887cfca3eb0xb8f8bad4233680302022-09-07 12:25:14592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.00001490.1
0x9740fd170084696f1a726a6a1ca4fefd125ad2ba7fcd2a14db42475dd7dc04a70xb8f8bad4233680222022-09-07 12:25:12592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.00001490.1
0x3fa3316fad159f23096ceb5da1d4f24d1c10ab807a7ac3bed742eeaeee35ebc60xb8f8bad4233680102022-09-07 12:25:09592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.00001490.1
0x9409c6dea4b58e12e4a6fbf14cea800561bd7760b9bb212bc5588eb67ae60d440xac16d6ac233677142022-09-07 12:23:29592 days 22 hrs agoLayer Zero: Executor IN  LayerZero: Relayer0 ETH0.000142280.1
0xb914edc0a3ac936c58a04c1cc140312e038ef7abefd42719f894475a52df8d720xb8f8bad4233671432022-09-07 12:20:15592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000014760.1
0xa21c6fd8ed94ffb91edfbfcc89b40924fc7df4a954de9db307f70c0fc3ac198f0xac16d6ac233668932022-09-07 12:18:46592 days 22 hrs agoLayer Zero: Executor IN  LayerZero: Relayer0 ETH0.000143160.1
0x722685f7bbdd2804bfca2e772496cbe2f47c48284bad9034ec259d7a6f4c4d450xac16d6ac233668072022-09-07 12:18:17592 days 22 hrs agoLayer Zero: Executor IN  LayerZero: Relayer0 ETH0.000148540.1
0x2b0fe057ef6e626e366b73e51baf14e6f0c9069580dd028dde7b2dc185eae9590xb8f8bad4233663412022-09-07 12:15:12592 days 22 hrs ago0x339d413ccefd986b1b3647a9cfa9cbbe70a30749 IN  LayerZero: Relayer0 ETH0.000013540.1
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xc30dc4878b7a19ebb9c7d4fdda09028574c87ff1499748a5e3e4767b341847f6367646472022-11-10 0:16:46529 days 10 hrs ago LayerZero: Relayer 0x66a71dcef29a0ffbdbe3c6a460a3b5bc225cd6750 ETH
0xc30dc4878b7a19ebb9c7d4fdda09028574c87ff1499748a5e3e4767b341847f6367646472022-11-10 0:16:46529 days 10 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xba8b881e8c73eaa0f27a4271065383b646e6ba3c5f6688e756d51f429b64845e233720872022-09-07 12:50:12592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xa5614f8c6f1680f3a4f3b95ad2b0bebef6bd031cc7036d258b853b929078bd0b233714492022-09-07 12:46:18592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xefcdaea527e95591d716c84bfc12e4f1e504e87b286fab54653948c0be049851233713202022-09-07 12:45:23592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xe56ee252c734baf8123c72e058f7bb63533f36a472fe2f3559ad0c70fecbfbc8233713162022-09-07 12:45:21592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x2253486de293cb2e65a42d2cfacb1b85ac750d9c96ab792f92c3160c2ab054c2233713112022-09-07 12:45:18592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x181ec02775e5da65d3210fd27fe4e568059ffb522a4348fe4125330c2f296b36233705772022-09-07 12:40:32592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xac0961f9e9c6a8b97800843e8c1b051c0725d0c7e0ff2624a5379f8131a2c745233705692022-09-07 12:40:29592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xe6ff52878b0e8655dc8d7080a7ae47541e6acd5e140b8e75dc51c4810be844db233705642022-09-07 12:40:26592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xad2c9042d1d080943509f1d96cfda109a5836b9e356a9d6cf71b2a30785d9643233705562022-09-07 12:40:23592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0xc36a8d1ba4196860eab8ab7b5995ea70db66c3204a009e14c51e37aec2455fee233696652022-09-07 12:35:18592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x6003dfee33e3f596bb2d6882ffe5c6694f0b5ffd60d34d7438994ac2f1f90fad233696582022-09-07 12:35:15592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x5656bd1c6dba1ff43782aab12c04b46369352b9c9df74e1b8d1a99ddd03474b1233696382022-09-07 12:35:10592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x1e32062906b15096f8b37538382bfd91504207dcf090c4689b5b3c64a270ae5b233692452022-09-07 12:33:00592 days 22 hrs ago LayerZero: Relayer 0x66a71dcef29a0ffbdbe3c6a460a3b5bc225cd6750 ETH
0x1e32062906b15096f8b37538382bfd91504207dcf090c4689b5b3c64a270ae5b233692452022-09-07 12:33:00592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x3eb90fbb07291f1f5e6a5d214ff76e05dc55c01e2cb25e8725004f2d4ac61700233688292022-09-07 12:30:15592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x35faad5f1b3dda88f42ffefe183046b79ccb017090c8ebb32f3f33fe98b20924233688152022-09-07 12:30:10592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x464b07ec4685cfd6728a7f0709e23eeb4a34b059b40f5487c4418ce839fb158f233681702022-09-07 12:26:10592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x464b07ec4685cfd6728a7f0709e23eeb4a34b059b40f5487c4418ce839fb158f233681702022-09-07 12:26:10592 days 22 hrs ago 0x66a71dcef29a0ffbdbe3c6a460a3b5bc225cd675 LayerZero: Relayer0 ETH
0x464b07ec4685cfd6728a7f0709e23eeb4a34b059b40f5487c4418ce839fb158f233681702022-09-07 12:26:10592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x464b07ec4685cfd6728a7f0709e23eeb4a34b059b40f5487c4418ce839fb158f233681702022-09-07 12:26:10592 days 22 hrs ago 0x66a71dcef29a0ffbdbe3c6a460a3b5bc225cd675 LayerZero: Relayer0 ETH
0x464b07ec4685cfd6728a7f0709e23eeb4a34b059b40f5487c4418ce839fb158f233681702022-09-07 12:26:10592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
0x464b07ec4685cfd6728a7f0709e23eeb4a34b059b40f5487c4418ce839fb158f233681702022-09-07 12:26:10592 days 22 hrs ago 0x66a71dcef29a0ffbdbe3c6a460a3b5bc225cd675 LayerZero: Relayer0 ETH
0xac6b3c718b395fd703a217dde7f90e02b2cdc57471c4da872e2579887cfca3eb233680302022-09-07 12:25:14592 days 22 hrs ago LayerZero: Relayer 0x060335db0f285f144388e22e851916d654ab26a00 ETH
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.

Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x965B104e250648d01d4B3b72BaC751Cde809D29E
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
OptimizedTransparentUpgradeableProxy

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 999999 runs

Other Settings:
istanbul EvmVersion, MIT license
File 1 of 4 : Proxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 * 
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 * 
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // 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 virtual view 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 {
        _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 () payable external {
        _fallback();
    }

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

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

File 2 of 4 : UpgradeableProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "./Proxy.sol";
import "../utils/Address.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) payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            // solhint-disable-next-line avoid-low-level-calls
            (bool success,) = _logic.delegatecall(_data);
            require(success);
        }
    }

    /**
     * @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 override view 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 {
        _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)
        }
    }
}

File 3 of 4 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

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

File 4 of 4 : OptimizedTransparentUpgradeableProxy.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;

import "../openzeppelin/proxy/UpgradeableProxy.sol";

/**
 * @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 inerface of your proxy.
 */
contract OptimizedTransparentUpgradeableProxy is UpgradeableProxy {
    address internal immutable _ADMIN;

    /**
     * @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 initialLogic,
        address initialAdmin,
        bytes memory _data
    ) payable UpgradeableProxy(initialLogic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        bytes32 slot = _ADMIN_SLOT;

        _ADMIN = initialAdmin;

        // still store it to work with EIP-1967
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, initialAdmin)
        }
    }

    /**
     * @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) {
        return _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) {
        return _implementation();
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external 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 ifAdmin {
        _upgradeTo(newImplementation);
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, ) = newImplementation.delegatecall(data);
        require(success);
    }

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

    /**
     * @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();
    }
}

Settings
{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"initialLogic","type":"address"},{"internalType":"address","name":"initialAdmin","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"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":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","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"}]

Deployed Bytecode

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Block Transaction Gas Used Reward
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