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Transaction Hash
Method
Block
From
To
Execute112814602020-11-18 10:44:561580 days ago1605696296IN
DSProxy #162,086
0 ETH0.0142779166
Execute112814582020-11-18 10:44:201580 days ago1605696260IN
DSProxy #162,086
0 ETH0.0112886466
Execute112814502020-11-18 10:42:211580 days ago1605696141IN
DSProxy #162,086
0 ETH0.0142150866
Execute112814402020-11-18 10:40:421580 days ago1605696042IN
DSProxy #162,086
0 ETH0.0112886466
Execute112814272020-11-18 10:37:011580 days ago1605695821IN
DSProxy #162,086
0 ETH0.0152085166
Execute111925662020-11-04 19:26:231593 days ago1604517983IN
DSProxy #162,086
0 ETH0.0076566633
Execute111462922020-10-28 16:39:141600 days ago1603903154IN
DSProxy #162,086
0 ETH0.02884748124
Execute111059512020-10-22 12:21:541606 days ago1603369314IN
DSProxy #162,086
2.3 ETH0.0110458881
Execute111054052020-10-22 10:16:371607 days ago1603361797IN
DSProxy #162,086
3.5 ETH0.0081821460
Execute111053952020-10-22 10:13:201607 days ago1603361600IN
DSProxy #162,086
0 ETH0.012999960
Execute111053932020-10-22 10:12:421607 days ago1603361562IN
DSProxy #162,086
0 ETH0.0139033860
Execute111053782020-10-22 10:09:391607 days ago1603361379IN
DSProxy #162,086
3.2 ETH0.0081821460
Execute111053112020-10-22 9:56:011607 days ago1603360561IN
DSProxy #162,086
0 ETH0.0139102860
Execute110028282020-10-06 14:50:491622 days ago1601995849IN
DSProxy #162,086
0 ETH0.02244915134
Execute109975542020-10-05 19:13:331623 days ago1601925213IN
DSProxy #162,086
0 ETH0.0169667373
Execute109974092020-10-05 18:39:261623 days ago1601923166IN
DSProxy #162,086
0 ETH0.0123516981
Execute109859292020-10-03 23:37:451625 days ago1601768265IN
DSProxy #162,086
0 ETH0.0101907544
Execute109843322020-10-03 17:38:201625 days ago1601746700IN
DSProxy #162,086
0 ETH0.0197021585
Execute109737082020-10-02 1:32:011627 days ago1601602321IN
DSProxy #162,086
5 ETH0.0095458370
Execute109736952020-10-02 1:29:501627 days ago1601602190IN
DSProxy #162,086
0 ETH0.0151440870
Execute109736932020-10-02 1:29:381627 days ago1601602178IN
DSProxy #162,086
0 ETH0.011972870
Execute109691022020-10-01 8:31:281628 days ago1601541088IN
DSProxy #162,086
0 ETH0.0122297673
Execute109678032020-10-01 3:37:421628 days ago1601523462IN
DSProxy #162,086
0 ETH0.0194999490
Execute109677972020-10-01 3:36:321628 days ago1601523392IN
DSProxy #162,086
6 ETH0.0122732190
Execute109676642020-10-01 3:05:321628 days ago1601521532IN
DSProxy #162,086
0 ETH0.0209118690
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Latest 25 internal transactions (View All)

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Parent Transaction Hash Method Block
From
To
-112814502020-11-18 10:42:211580 days ago1605696141
DSProxy #162,086
13 ETH
-112814502020-11-18 10:42:211580 days ago1605696141
DSProxy #162,086
13 ETH
-112814272020-11-18 10:37:011580 days ago1605695821
DSProxy #162,086
8 ETH
-112814272020-11-18 10:37:011580 days ago1605695821
DSProxy #162,086
8 ETH
-111059512020-10-22 12:21:541606 days ago1603369314
DSProxy #162,086
2.3 ETH
-111054052020-10-22 10:16:371607 days ago1603361797
DSProxy #162,086
3.5 ETH
-111053782020-10-22 10:09:391607 days ago1603361379
DSProxy #162,086
3.2 ETH
-109737082020-10-02 1:32:011627 days ago1601602321
DSProxy #162,086
5 ETH
-109677972020-10-01 3:36:321628 days ago1601523392
DSProxy #162,086
6 ETH
-109590192020-09-29 18:43:021629 days ago1601404982
DSProxy #162,086
7 ETH
-109590192020-09-29 18:43:021629 days ago1601404982
DSProxy #162,086
7 ETH
-109486632020-09-28 3:33:011631 days ago1601263981
DSProxy #162,086
3 ETH
-109463722020-09-27 19:07:141631 days ago1601233634
DSProxy #162,086
5 ETH
-109400392020-09-26 19:15:141632 days ago1601147714
DSProxy #162,086
5.39 ETH
-109400392020-09-26 19:15:141632 days ago1601147714
DSProxy #162,086
5.39 ETH
-109400182020-09-26 19:10:201632 days ago1601147420
DSProxy #162,086
5 ETH
-109400182020-09-26 19:10:201632 days ago1601147420
DSProxy #162,086
5 ETH
-109400052020-09-26 19:08:531632 days ago1601147333
DSProxy #162,086
4 ETH
-109400052020-09-26 19:08:531632 days ago1601147333
DSProxy #162,086
4 ETH
-109398892020-09-26 18:42:501632 days ago1601145770
DSProxy #162,086
6 ETH
-109398892020-09-26 18:42:501632 days ago1601145770
DSProxy #162,086
6 ETH
-109398372020-09-26 18:27:141632 days ago1601144834
DSProxy #162,086
5 ETH
-109398372020-09-26 18:27:141632 days ago1601144834
DSProxy #162,086
5 ETH
-109331232020-09-25 17:27:271633 days ago1601054847
DSProxy #162,086
4 ETH
-109331232020-09-25 17:27:271633 days ago1601054847
DSProxy #162,086
4 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x2B9B8b83...8ff54a8AC
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
DSProxy

Compiler Version
v0.4.23+commit.124ca40d

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2018-09-06
*/

// proxy.sol - execute actions atomically through the proxy's identity

// Copyright (C) 2017  DappHub, LLC

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.4.23;

contract DSAuthority {
    function canCall(
        address src, address dst, bytes4 sig
    ) public view returns (bool);
}

contract DSAuthEvents {
    event LogSetAuthority (address indexed authority);
    event LogSetOwner     (address indexed owner);
}

contract DSAuth is DSAuthEvents {
    DSAuthority  public  authority;
    address      public  owner;

    constructor() public {
        owner = msg.sender;
        emit LogSetOwner(msg.sender);
    }

    function setOwner(address owner_)
        public
        auth
    {
        owner = owner_;
        emit LogSetOwner(owner);
    }

    function setAuthority(DSAuthority authority_)
        public
        auth
    {
        authority = authority_;
        emit LogSetAuthority(authority);
    }

    modifier auth {
        require(isAuthorized(msg.sender, msg.sig));
        _;
    }

    function isAuthorized(address src, bytes4 sig) internal view returns (bool) {
        if (src == address(this)) {
            return true;
        } else if (src == owner) {
            return true;
        } else if (authority == DSAuthority(0)) {
            return false;
        } else {
            return authority.canCall(src, this, sig);
        }
    }
}

contract DSNote {
    event LogNote(
        bytes4   indexed  sig,
        address  indexed  guy,
        bytes32  indexed  foo,
        bytes32  indexed  bar,
        uint              wad,
        bytes             fax
    ) anonymous;

    modifier note {
        bytes32 foo;
        bytes32 bar;

        assembly {
            foo := calldataload(4)
            bar := calldataload(36)
        }

        emit LogNote(msg.sig, msg.sender, foo, bar, msg.value, msg.data);

        _;
    }
}

// DSProxy
// Allows code execution using a persistant identity This can be very
// useful to execute a sequence of atomic actions. Since the owner of
// the proxy can be changed, this allows for dynamic ownership models
// i.e. a multisig
contract DSProxy is DSAuth, DSNote {
    DSProxyCache public cache;  // global cache for contracts

    constructor(address _cacheAddr) public {
        require(setCache(_cacheAddr));
    }

    function() public payable {
    }

    // use the proxy to execute calldata _data on contract _code
    function execute(bytes _code, bytes _data)
        public
        payable
        returns (address target, bytes32 response)
    {
        target = cache.read(_code);
        if (target == 0x0) {
            // deploy contract & store its address in cache
            target = cache.write(_code);
        }

        response = execute(target, _data);
    }

    function execute(address _target, bytes _data)
        public
        auth
        note
        payable
        returns (bytes32 response)
    {
        require(_target != 0x0);

        // call contract in current context
        assembly {
            let succeeded := delegatecall(sub(gas, 5000), _target, add(_data, 0x20), mload(_data), 0, 32)
            response := mload(0)      // load delegatecall output
            switch iszero(succeeded)
            case 1 {
                // throw if delegatecall failed
                revert(0, 0)
            }
        }
    }

    //set new cache
    function setCache(address _cacheAddr)
        public
        auth
        note
        returns (bool)
    {
        require(_cacheAddr != 0x0);        // invalid cache address
        cache = DSProxyCache(_cacheAddr);  // overwrite cache
        return true;
    }
}

// DSProxyFactory
// This factory deploys new proxy instances through build()
// Deployed proxy addresses are logged
contract DSProxyFactory {
    event Created(address indexed sender, address indexed owner, address proxy, address cache);
    mapping(address=>bool) public isProxy;
    DSProxyCache public cache = new DSProxyCache();

    // deploys a new proxy instance
    // sets owner of proxy to caller
    function build() public returns (DSProxy proxy) {
        proxy = build(msg.sender);
    }

    // deploys a new proxy instance
    // sets custom owner of proxy
    function build(address owner) public returns (DSProxy proxy) {
        proxy = new DSProxy(cache);
        emit Created(msg.sender, owner, address(proxy), address(cache));
        proxy.setOwner(owner);
        isProxy[proxy] = true;
    }
}

// DSProxyCache
// This global cache stores addresses of contracts previously deployed
// by a proxy. This saves gas from repeat deployment of the same
// contracts and eliminates blockchain bloat.

// By default, all proxies deployed from the same factory store
// contracts in the same cache. The cache a proxy instance uses can be
// changed.  The cache uses the sha3 hash of a contract's bytecode to
// lookup the address
contract DSProxyCache {
    mapping(bytes32 => address) cache;

    function read(bytes _code) public view returns (address) {
        bytes32 hash = keccak256(_code);
        return cache[hash];
    }

    function write(bytes _code) public returns (address target) {
        assembly {
            target := create(0, add(_code, 0x20), mload(_code))
            switch iszero(extcodesize(target))
            case 1 {
                // throw if contract failed to deploy
                revert(0, 0)
            }
        }
        bytes32 hash = keccak256(_code);
        cache[hash] = target;
    }
}

Contract Security Audit

Contract ABI

API
[{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_target","type":"address"},{"name":"_data","type":"bytes"}],"name":"execute","outputs":[{"name":"response","type":"bytes32"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"name":"_code","type":"bytes"},{"name":"_data","type":"bytes"}],"name":"execute","outputs":[{"name":"target","type":"address"},{"name":"response","type":"bytes32"}],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"cache","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_cacheAddr","type":"address"}],"name":"setCache","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_cacheAddr","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"}]

Deployed Bytecode

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

Swarm Source

bzzr://e498874c9ba9e75028e0c84f1b1d83b2dad5de910c59b837b32e5a190794c5e1

Block Transaction Difficulty Gas Used Reward
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OVERVIEW

The proxy contract address for 0xb27fda7fbc5b42e5e5e0bc6be75b27a0f3fbf2fd.

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