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Gas: 35 GWei
 

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Celsius (CEL) (@$1.40)

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1 address found via
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Method
Block
From
To
Value
Approve574954802024-05-28 16:34:111 hr ago1716914051IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0016030731
Approve574914602024-05-28 14:01:373 hrs ago1716904897IN
0xD85d1e94...5FbCa63E6
0 MATIC0.001489450
Approve574801282024-05-28 6:51:3910 hrs ago1716879099IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0021827142.20899966
Approve574732312024-05-28 2:42:4615 hrs ago1716864166IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0015517430.00045541
Approve574727402024-05-28 2:25:2015 hrs ago1716863120IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0016030731
Approve574496482024-05-27 12:08:0029 hrs ago1716811680IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0026613951.11
Approve574465582024-05-27 10:16:2231 hrs ago1716804982IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0033192363.74316224
Approve574444802024-05-27 8:57:1932 hrs ago1716800239IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0013849640
Withdraw574325412024-05-27 1:21:1940 hrs ago1716772879IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0023661267.99990007
Approve574289142024-05-26 23:06:1742 hrs ago1716764777IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0015517230.00000003
Approve574283262024-05-26 22:44:4043 hrs ago1716763480IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0017068933
Withdraw574146022024-05-26 14:16:022 days ago1716732962IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0014539441.78493855
Approve574145002024-05-26 14:12:262 days ago1716732746IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0017586134
Approve574144532024-05-26 14:10:262 days ago1716732626IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0015621630.00002408
Withdraw574121122024-05-26 12:41:172 days ago1716727277IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0027140878.00000293
Approve574088602024-05-26 10:37:272 days ago1716719847IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0016140231.21175583
Withdraw573987992024-05-26 4:11:042 days ago1716696664IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0025053472.00099717
Withdraw573982832024-05-26 3:51:122 days ago1716695472IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0025053172.00003161
Withdraw573947442024-05-26 1:36:312 days ago1716687391IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0025261872.60000015
Approve573924402024-05-26 0:06:222 days ago1716681982IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0015621630.00000004
Withdraw573909902024-05-25 23:09:532 days ago1716678593IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0023052666.25090005
Withdraw573909452024-05-25 23:08:142 days ago1716678494IN
0xD85d1e94...5FbCa63E6
0 MATIC0.00920607232.50000004
Approve573909342024-05-25 23:07:322 days ago1716678452IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0078108150.00000003
Approve573862122024-05-25 20:14:252 days ago1716668065IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0016551632
Approve573834702024-05-25 18:35:372 days ago1716662137IN
0xD85d1e94...5FbCa63E6
0 MATIC0.0015517230.00000002
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Contract Source Code Verified (Exact Match)

Contract Name:
UChildERC20Proxy

Compiler Version
v0.6.6+commit.6c089d02

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion, None license
/**
 *Submitted for verification at polygonscan.com on 2021-06-30
*/

// File: contracts/common/Proxy/IERCProxy.sol

pragma solidity 0.6.6;

interface IERCProxy {
    function proxyType() external pure returns (uint256 proxyTypeId);

    function implementation() external view returns (address codeAddr);
}

// File: contracts/common/Proxy/Proxy.sol

pragma solidity 0.6.6;


abstract contract Proxy is IERCProxy {
    function delegatedFwd(address _dst, bytes memory _calldata) internal {
        // solium-disable-next-line security/no-inline-assembly
        assembly {
            let result := delegatecall(
                sub(gas(), 10000),
                _dst,
                add(_calldata, 0x20),
                mload(_calldata),
                0,
                0
            )
            let size := returndatasize()

            let ptr := mload(0x40)
            returndatacopy(ptr, 0, size)

            // revert instead of invalid() bc if the underlying call failed with invalid() it already wasted gas.
            // if the call returned error data, forward it
            switch result
                case 0 {
                    revert(ptr, size)
                }
                default {
                    return(ptr, size)
                }
        }
    }

    function proxyType() external virtual override pure returns (uint256 proxyTypeId) {
        // Upgradeable proxy
        proxyTypeId = 2;
    }

    function implementation() external virtual override view returns (address);
}

// File: contracts/common/Proxy/UpgradableProxy.sol

pragma solidity 0.6.6;


contract UpgradableProxy is Proxy {
    event ProxyUpdated(address indexed _new, address indexed _old);
    event ProxyOwnerUpdate(address _new, address _old);

    bytes32 constant IMPLEMENTATION_SLOT = keccak256("matic.network.proxy.implementation");
    bytes32 constant OWNER_SLOT = keccak256("matic.network.proxy.owner");

    constructor(address _proxyTo) public {
        setProxyOwner(msg.sender);
        setImplementation(_proxyTo);
    }

    fallback() external payable {
        delegatedFwd(loadImplementation(), msg.data);
    }

    receive() external payable {
        delegatedFwd(loadImplementation(), msg.data);
    }

    modifier onlyProxyOwner() {
        require(loadProxyOwner() == msg.sender, "NOT_OWNER");
        _;
    }

    function proxyOwner() external view returns(address) {
        return loadProxyOwner();
    }

    function loadProxyOwner() internal view returns(address) {
        address _owner;
        bytes32 position = OWNER_SLOT;
        assembly {
            _owner := sload(position)
        }
        return _owner;
    }

    function implementation() external override view returns (address) {
        return loadImplementation();
    }

    function loadImplementation() internal view returns(address) {
        address _impl;
        bytes32 position = IMPLEMENTATION_SLOT;
        assembly {
            _impl := sload(position)
        }
        return _impl;
    }

    function transferProxyOwnership(address newOwner) public onlyProxyOwner {
        require(newOwner != address(0), "ZERO_ADDRESS");
        emit ProxyOwnerUpdate(newOwner, loadProxyOwner());
        setProxyOwner(newOwner);
    }

    function setProxyOwner(address newOwner) private {
        bytes32 position = OWNER_SLOT;
        assembly {
            sstore(position, newOwner)
        }
    }

    function updateImplementation(address _newProxyTo) public onlyProxyOwner {
        require(_newProxyTo != address(0x0), "INVALID_PROXY_ADDRESS");
        require(isContract(_newProxyTo), "DESTINATION_ADDRESS_IS_NOT_A_CONTRACT");

        emit ProxyUpdated(_newProxyTo, loadImplementation());
        
        setImplementation(_newProxyTo);
    }

    function updateAndCall(address _newProxyTo, bytes memory data) payable public onlyProxyOwner {
        updateImplementation(_newProxyTo);

        (bool success, bytes memory returnData) = address(this).call{value: msg.value}(data);
        require(success, string(returnData));
    }

    function setImplementation(address _newProxyTo) private {
        bytes32 position = IMPLEMENTATION_SLOT;
        assembly {
            sstore(position, _newProxyTo)
        }
    }
    
    function isContract(address _target) internal view returns (bool) {
        if (_target == address(0)) {
            return false;
        }

        uint256 size;
        assembly {
            size := extcodesize(_target)
        }
        return size > 0;
    }
}

// File: contracts/child/ChildToken/UpgradeableChildERC20/UChildERC20Proxy.sol

pragma solidity 0.6.6;


contract UChildERC20Proxy is UpgradableProxy {
    constructor(address _proxyTo)
        public
        UpgradableProxy(_proxyTo)
    {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_proxyTo","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_new","type":"address"},{"indexed":false,"internalType":"address","name":"_old","type":"address"}],"name":"ProxyOwnerUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_new","type":"address"},{"indexed":true,"internalType":"address","name":"_old","type":"address"}],"name":"ProxyUpdated","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxyOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxyType","outputs":[{"internalType":"uint256","name":"proxyTypeId","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferProxyOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newProxyTo","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"updateAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_newProxyTo","type":"address"}],"name":"updateImplementation","outputs":[],"stateMutability":"nonpayable","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)

000000000000000000000000a0451a72f243a5173ea604b43b5f61ee76376551

-----Decoded View---------------
Arg [0] : _proxyTo (address): 0xa0451a72f243A5173ea604B43B5F61EE76376551

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000a0451a72f243a5173ea604b43b5f61ee76376551


Block Transaction Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.