MATIC Price: $1.02 (+0.06%)
Gas: 109 GWei
 

Overview

MATIC Balance

Polygon PoS Chain LogoPolygon PoS Chain LogoPolygon PoS Chain Logo0 MATIC

MATIC Value

$0.00

Token Holdings

Sponsored

Transaction Hash
Method
Block
From
To
Value
Transfer Proxy O...136132272021-04-23 2:34:071070 days ago1619145247IN
0x7D836dA4...597F09981
0 MATIC0.000030221
Revoke Role136124872021-04-23 2:08:351070 days ago1619143715IN
0x7D836dA4...597F09981
0 MATIC0.00002531
Transfer85131472020-12-19 23:48:521194 days ago1608421732IN
0x7D836dA4...597F09981
0 MATIC0.00002361
Transfer85128832020-12-19 23:39:481194 days ago1608421188IN
0x7D836dA4...597F09981
0 MATIC0.001340525
Transfer85128582020-12-19 23:38:581194 days ago1608421138IN
0x7D836dA4...597F09981
0 MATIC0.00002361
Transfer85128152020-12-19 23:37:281194 days ago1608421048IN
0x7D836dA4...597F09981
0 MATIC0.000053621
Transfer85127692020-12-19 23:35:561194 days ago1608420956IN
0x7D836dA4...597F09981
0 MATIC0.000590225
Transfer85127322020-12-19 23:34:381194 days ago1608420878IN
0x7D836dA4...597F09981
0 MATIC0.000053621
Transfer85119932020-12-19 23:09:121194 days ago1608419352IN
0x7D836dA4...597F09981
0 MATIC0.0009207139
Transfer85119722020-12-19 23:08:301194 days ago1608419310IN
0x7D836dA4...597F09981
0 MATIC0.0017694633
Transfer85118822020-12-19 23:05:261194 days ago1608419126IN
0x7D836dA4...597F09981
0 MATIC0.0011003827
Transfer85118442020-12-19 23:04:061194 days ago1608419046IN
0x7D836dA4...597F09981
0 MATIC0.0011003827
Transfer85118082020-12-19 23:02:541194 days ago1608418974IN
0x7D836dA4...597F09981
0 MATIC0.0008026734
Transfer85117482020-12-19 23:00:501194 days ago1608418850IN
0x7D836dA4...597F09981
0 MATIC0.0010242134
Transfer85117152020-12-19 22:59:401194 days ago1608418780IN
0x7D836dA4...597F09981
0 MATIC0.0015443240
Initialize61925842020-10-25 13:16:381249 days ago1603631798IN
0x7D836dA4...597F09981
0 MATIC0.000326561
0x6080604061925802020-10-25 13:16:301249 days ago1603631790IN
 Contract Creation
0 MATIC0.000730761

Parent Txn Hash Block From To Value
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x7d3fA4bA...a97bBF313
The constructor portion of the code might be different and could alter the actual behaviour of the contract

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 2021-06-09
*/

// 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"}]

Deployed Bytecode

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Deployed Bytecode Sourcemap

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Swarm Source

ipfs://41ef759422fabf085e8197d08185f4d0cdb3a0ab3423629d2271c1c06c720f06

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