Contract 0xf52f079af080c9fb5afca57dde0f8b83d49692a9

 

Contract Overview

dForce: iUSDT Token
Balance:
0 ETH

ETH Value:
$0.00

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373Redeem563381632023-01-29 10:48:0344 mins ago0xa55eb747fa850fcaecadd01d6345801ac011d2fb IN  dForce: iUSDT Token0 ETH0.0000508
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2Mint563378832023-01-29 10:46:3345 mins ago0xa55eb747fa850fcaecadd01d6345801ac011d2fb IN  dForce: iUSDT Token0 ETH0.00005449
0x27e755d24188295d572fb2feeda4ce108660a882b5ea615f5505d68ed82fbd22Borrow563214562023-01-29 9:21:532 hrs 10 mins ago0x90c1c4fa36124bcb3d7f9cf9a3baeda1acc7d831 IN  dForce: iUSDT Token0 ETH0.00006155
0x6e882f342961fb853111d3461f556c69e0b1f70c4f99ea9f81d2fb41b1d955f3Borrow563199882023-01-29 9:14:572 hrs 17 mins ago0x90c1c4fa36124bcb3d7f9cf9a3baeda1acc7d831 IN  dForce: iUSDT Token0 ETH0.00006078
0xc35fc42b0787a0b0436f891fe380c5c171975699d9ed277f0563b416571a3270Borrow563189622023-01-29 9:10:042 hrs 22 mins ago0x90c1c4fa36124bcb3d7f9cf9a3baeda1acc7d831 IN  dForce: iUSDT Token0 ETH0.00007151
0x6bfe65c5a60a09b60cb75779b8fd89e25f9c031a8886e4c808668775cf84332dRedeem563072092023-01-29 8:06:403 hrs 25 mins ago0x75edc33a78c438cfdafb0c6d52aa5630fe5cc9fa IN  dForce: iUSDT Token0 ETH0.0000517
0x1504fd9f118f59bf6d50e18abd8038375172766cf32e85454ad68042f376cf81Mint563053722023-01-29 7:55:543 hrs 36 mins ago0x75edc33a78c438cfdafb0c6d52aa5630fe5cc9fa IN  dForce: iUSDT Token0 ETH0.0000517
0xedd0cdfcf6b5df28a2379411f411ee45c3f62f4e391aef4c387a501a03b68bdfMint562741002023-01-29 4:22:177 hrs 9 mins ago0xbfaa7335f92e8b9b95c5d4af1e881f4296287d40 IN  dForce: iUSDT Token0 ETH0.0000519
0x26c8bd6bfd44e0e380753c2509ac62db720cc4b200330d2da87a1aef9cdda487Mint562333122023-01-28 23:30:1812 hrs 1 min ago0xf070f832cc922732c4512a487bd38f16b78426b9 IN  dForce: iUSDT Token0 ETH0.00005585
0x9f51a22a5f184b9221a7dd6740601b8e465d85573842ffce9d12642d084bd02dMint561169192023-01-28 11:34:0223 hrs 58 mins ago0x4c3889381d6e9d7cff71c71c1c3deb2a0c501c4f IN  dForce: iUSDT Token0 ETH0.00005433
0x4c6032b42822dd555f246b3748a4f264ee22d0693ece032b740332a6968e8ea1Redeem560013942023-01-28 1:04:521 day 10 hrs ago0x5e8779234daf86d4e869ef7b115630e043ab8dca IN  dForce: iUSDT Token0 ETH0.00010786
0x8d524314bddfbcc13dc0162e58c9949435566860d5e2b13c5c3b5e0c1b388689Mint560008712023-01-28 1:01:061 day 10 hrs ago0x5e8779234daf86d4e869ef7b115630e043ab8dca IN  dForce: iUSDT Token0 ETH0.00005005
0xf5f0decc7c950d4e243fa9ce1cea274d95798e2b1344cb10d8227ddb600a2ee3Redeem Underlyin...560007272023-01-28 1:00:131 day 10 hrs ago0x5e8779234daf86d4e869ef7b115630e043ab8dca IN  dForce: iUSDT Token0 ETH0.00006996
0x27b3e796ea2458fd2a73807f5bd12bd73987403e6a8875c242fe5ada7fb987adRepay Borrow558471532023-01-27 11:34:461 day 23 hrs ago0x4e6b07af2bd618145aa746e986d7e1bc5ffbbdcb IN  dForce: iUSDT Token0 ETH0.0000424
0x3f1308c2357dfec1c022ab151b3534c0803667391c84e3e78b25e9e1f78e4a5dRedeem558399842023-01-27 10:58:222 days 33 mins ago0xd409b49507846ac8e79bb4aef28f7eef54680eb4 IN  dForce: iUSDT Token0 ETH0.00004628
0x9bd5d14f9f475afbae745ca24f6445d412d5af1a7e1fd75a5a3d5f60f608571cRedeem555199802023-01-26 4:04:313 days 7 hrs ago0x9d6db99d7bdf2ceda259a811a1f3e13d69b87a6f IN  dForce: iUSDT Token0 ETH0.00005069
0x9e7918c6ac760c2cb24732e51c14d189d3a48296e7a36a3f525b02d8ad9e9a40Repay Borrow554961512023-01-26 1:43:493 days 9 hrs ago0x95d9fd113de294909702b0480a22f011c73bb26e IN  dForce: iUSDT Token0 ETH0.00003629
0x6bf3d0709a88e89a90dda955dded153ff5994670eac26ecc0c453dfabf76badfMint554920872023-01-26 1:25:483 days 10 hrs ago0x183a4af072a1ebba1d291fec34fda2fbfd9a5f91 IN  dForce: iUSDT Token0 ETH0.00006045
0x684a40834bee595a7b068c439d921fb6c864d7909a1957b16359a62e5cf056b1Redeem554538422023-01-25 21:45:473 days 13 hrs ago0xc669fa6c742aeb6c9a7a79cce0c3cb226d82f792 IN  dForce: iUSDT Token0 ETH0.00006017
0x626eb27d6a84c00df30d094cadc7077c1068335595aa0f9f9c46be800e3cb3d3Redeem Underlyin...554535552023-01-25 21:44:073 days 13 hrs ago0xc669fa6c742aeb6c9a7a79cce0c3cb226d82f792 IN  dForce: iUSDT Token0 ETH0.00006654
0x83c35ae48560d85a7bdb7cf28b6a7f10c15bbafb665bc1c54246d23c6ea50234Redeem554130112023-01-25 17:43:443 days 17 hrs ago0x0a658c9c1bb240961c13e3bb35f0a90482dad012 IN  dForce: iUSDT Token0 ETH0.00007762
0xde22d53bb076dde993fdaf227bee506ffa75445d794fa6a4b69cf3d84d1d0b24Mint553896822023-01-25 15:24:223 days 20 hrs ago0xc73c68bd2164fe958911f316537f03a65ba7fcac IN  dForce: iUSDT Token0 ETH0.00005867
0xbf7324a1e724dec9688490c30027ff3038c7d35ad5872f2c08376013a9c9a14eMint553770082023-01-25 14:19:123 days 21 hrs ago0x78745234bb0dbdf5359da91597610d54dc722ffa IN  dForce: iUSDT Token0 ETH0.00005092
0x27b952bf6684f827b9105b077d7f35ce51ed00a41b35678b00c2564fd0e7bd83Mint552034962023-01-24 19:34:204 days 15 hrs ago0x4fa39d0da2c97d07d586c9183d680f0a8dc2ba34 IN  dForce: iUSDT Token0 ETH0.00006264
0x91ffd7b62b99398637ba1f7eed61ce14ac23878350d5956531fe94c8ef7ee1a1Borrow551412502023-01-24 13:33:294 days 21 hrs ago0x206e329247cfad8a4ccc930e262d6f24cf034caa IN  dForce: iUSDT Token0 ETH0.00006955
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OVERVIEW

Interest Bearing Token for depositing USDT in dForce Lending Protocol.

Latest 25 internal transaction
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0x183a5bf49428a41af1c84826ad24b84a8cb5810dd300a1c551ea8f7868f7959b563394052023-01-29 10:54:3137 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
0x183a5bf49428a41af1c84826ad24b84a8cb5810dd300a1c551ea8f7868f7959b563394052023-01-29 10:54:3137 mins ago 0xf45e2ae152384d50d4e9b08b8a1f65f0d96786c3 dForce: iUSDT Token0 ETH
0x183a5bf49428a41af1c84826ad24b84a8cb5810dd300a1c551ea8f7868f7959b563394052023-01-29 10:54:3137 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
0x183a5bf49428a41af1c84826ad24b84a8cb5810dd300a1c551ea8f7868f7959b563394052023-01-29 10:54:3137 mins ago 0xf45e2ae152384d50d4e9b08b8a1f65f0d96786c3 dForce: iUSDT Token0 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token 0x8e7e9ea9023b81457ae7e6d2a51b003d421e54080 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token Tether: USDT Token0 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago 0xf45e2ae152384d50d4e9b08b8a1f65f0d96786c3 dForce: iUSDT Token0 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago 0xf45e2ae152384d50d4e9b08b8a1f65f0d96786c3 dForce: iUSDT Token0 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token 0x8e7e9ea9023b81457ae7e6d2a51b003d421e54080 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token Tether: USDT Token0 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token 0xaf72329e42d0be8bee137bc3420f20fc04a49efb0 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token Tether: USDT Token0 ETH
0x63ac7855e9585847196f88b134a45a12d22b95ebf8e2ecdfaa915875e6c5c373563381632023-01-29 10:48:0344 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token 0x8e7e9ea9023b81457ae7e6d2a51b003d421e54080 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token Tether: USDT Token0 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token Tether: USDT Token0 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token Tether: USDT Token0 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token Tether: USDT Token0 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago 0xf45e2ae152384d50d4e9b08b8a1f65f0d96786c3 dForce: iUSDT Token0 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago 0xf45e2ae152384d50d4e9b08b8a1f65f0d96786c3 dForce: iUSDT Token0 ETH
0xb79fdbd9b88af7e045f2c11a0c0663f166474558f468f45d06458d31501fecd2563378832023-01-29 10:46:3345 mins ago dForce: iUSDT Token 0x45b5636b01091336f02194d327374924d54a07720 ETH
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x641441c631e2F909700d2f41FD87F0aA6A6b4EDb

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 4 : TransparentUpgradeableProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./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 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 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 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) {
        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 override virtual {
        require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}

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

pragma solidity >=0.6.0 <0.8.0;

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) public 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 : Proxy.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable {
        _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 4 of 4 : Address.sol
// 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);
    }

    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);
            }
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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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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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