ETH Price: $3,574.49 (-0.30%)
Gas: 38 Gwei

Contract

0x3EB064766109D150e4362222df80638BcE00e037
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

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Transaction Hash
Method
Block
From
To
Value
Transfer120383502021-03-14 18:34:161109 days ago1615746856IN
Synthetix: Old Proxy sEUR Token
0 ETH0.01266919165
Transfer120374932021-03-14 15:24:341109 days ago1615735474IN
Synthetix: Old Proxy sEUR Token
0 ETH0.01151745150
Transfer120374872021-03-14 15:23:511109 days ago1615735431IN
Synthetix: Old Proxy sEUR Token
0 ETH0.01151745150
Transfer117186352021-01-24 13:40:011158 days ago1611495601IN
Synthetix: Old Proxy sEUR Token
0 ETH0.0047305761.6
Transfer117186332021-01-24 13:39:361158 days ago1611495576IN
Synthetix: Old Proxy sEUR Token
0 ETH0.0049839964.9
Transfer117036792021-01-22 6:23:221161 days ago1611296602IN
Synthetix: Old Proxy sEUR Token
0 ETH0.0047605462
Transfer87603602019-10-17 19:24:001623 days ago1571340240IN
Synthetix: Old Proxy sEUR Token
0 ETH0.000508448.1
Transfer87413922019-10-14 19:43:391626 days ago1571082219IN
Synthetix: Old Proxy sEUR Token
0 ETH0.000497688
Transfer87413882019-10-14 19:43:171626 days ago1571082197IN
Synthetix: Old Proxy sEUR Token
0 ETH0.000062771
Transfer86714052019-10-03 20:31:441637 days ago1570134704IN
Synthetix: Old Proxy sEUR Token
0 ETH0.0008942715
Transfer86713902019-10-03 20:26:571637 days ago1570134417IN
Synthetix: Old Proxy sEUR Token
0 ETH0.0003596212
Accept Ownership68418332018-12-07 9:21:441938 days ago1544174504IN
Synthetix: Old Proxy sEUR Token
0 ETH0.00013387
Nominate New Own...68398122018-12-07 1:15:221938 days ago1544145322IN
Synthetix: Old Proxy sEUR Token
0 ETH0.0004456210.001
Set Target68355412018-12-06 8:18:251939 days ago1544084305IN
Synthetix: Old Proxy sEUR Token
0 ETH0.000401419
0x6080604068349772018-12-06 6:08:171939 days ago1544076497IN
 Contract Creation
0 ETH0.0092158915.001

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xb440DD67...B0A92d309
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
Proxy

Compiler Version
v0.4.25+commit.59dbf8f1

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2018-12-06
*/

/* ===============================================
* Flattened with Solidifier by Coinage
* 
* https://solidifier.coina.ge
* ===============================================
*/


/*
-----------------------------------------------------------------
FILE INFORMATION
-----------------------------------------------------------------

file:       Owned.sol
version:    1.1
author:     Anton Jurisevic
            Dominic Romanowski

date:       2018-2-26

-----------------------------------------------------------------
MODULE DESCRIPTION
-----------------------------------------------------------------

An Owned contract, to be inherited by other contracts.
Requires its owner to be explicitly set in the constructor.
Provides an onlyOwner access modifier.

To change owner, the current owner must nominate the next owner,
who then has to accept the nomination. The nomination can be
cancelled before it is accepted by the new owner by having the
previous owner change the nomination (setting it to 0).

-----------------------------------------------------------------
*/

pragma solidity 0.4.25;

/**
 * @title A contract with an owner.
 * @notice Contract ownership can be transferred by first nominating the new owner,
 * who must then accept the ownership, which prevents accidental incorrect ownership transfers.
 */
contract Owned {
    address public owner;
    address public nominatedOwner;

    /**
     * @dev Owned Constructor
     */
    constructor(address _owner)
        public
    {
        require(_owner != address(0), "Owner address cannot be 0");
        owner = _owner;
        emit OwnerChanged(address(0), _owner);
    }

    /**
     * @notice Nominate a new owner of this contract.
     * @dev Only the current owner may nominate a new owner.
     */
    function nominateNewOwner(address _owner)
        external
        onlyOwner
    {
        nominatedOwner = _owner;
        emit OwnerNominated(_owner);
    }

    /**
     * @notice Accept the nomination to be owner.
     */
    function acceptOwnership()
        external
    {
        require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
        emit OwnerChanged(owner, nominatedOwner);
        owner = nominatedOwner;
        nominatedOwner = address(0);
    }

    modifier onlyOwner
    {
        require(msg.sender == owner, "Only the contract owner may perform this action");
        _;
    }

    event OwnerNominated(address newOwner);
    event OwnerChanged(address oldOwner, address newOwner);
}


/*
-----------------------------------------------------------------
FILE INFORMATION
-----------------------------------------------------------------

file:       Proxyable.sol
version:    1.1
author:     Anton Jurisevic

date:       2018-05-15

checked:    Mike Spain
approved:   Samuel Brooks

-----------------------------------------------------------------
MODULE DESCRIPTION
-----------------------------------------------------------------

A proxyable contract that works hand in hand with the Proxy contract
to allow for anyone to interact with the underlying contract both
directly and through the proxy.

-----------------------------------------------------------------
*/


// This contract should be treated like an abstract contract
contract Proxyable is Owned {
    /* The proxy this contract exists behind. */
    Proxy public proxy;

    /* The caller of the proxy, passed through to this contract.
     * Note that every function using this member must apply the onlyProxy or
     * optionalProxy modifiers, otherwise their invocations can use stale values. */ 
    address messageSender; 

    constructor(address _proxy, address _owner)
        Owned(_owner)
        public
    {
        proxy = Proxy(_proxy);
        emit ProxyUpdated(_proxy);
    }

    function setProxy(address _proxy)
        external
        onlyOwner
    {
        proxy = Proxy(_proxy);
        emit ProxyUpdated(_proxy);
    }

    function setMessageSender(address sender)
        external
        onlyProxy
    {
        messageSender = sender;
    }

    modifier onlyProxy {
        require(Proxy(msg.sender) == proxy, "Only the proxy can call this function");
        _;
    }

    modifier optionalProxy
    {
        if (Proxy(msg.sender) != proxy) {
            messageSender = msg.sender;
        }
        _;
    }

    modifier optionalProxy_onlyOwner
    {
        if (Proxy(msg.sender) != proxy) {
            messageSender = msg.sender;
        }
        require(messageSender == owner, "This action can only be performed by the owner");
        _;
    }

    event ProxyUpdated(address proxyAddress);
}


/*
-----------------------------------------------------------------
FILE INFORMATION
-----------------------------------------------------------------

file:       Proxy.sol
version:    1.3
author:     Anton Jurisevic

date:       2018-05-29

-----------------------------------------------------------------
MODULE DESCRIPTION
-----------------------------------------------------------------

A proxy contract that, if it does not recognise the function
being called on it, passes all value and call data to an
underlying target contract.

This proxy has the capacity to toggle between DELEGATECALL
and CALL style proxy functionality.

The former executes in the proxy's context, and so will preserve 
msg.sender and store data at the proxy address. The latter will not.
Therefore, any contract the proxy wraps in the CALL style must
implement the Proxyable interface, in order that it can pass msg.sender
into the underlying contract as the state parameter, messageSender.

-----------------------------------------------------------------
*/


contract Proxy is Owned {

    Proxyable public target;
    bool public useDELEGATECALL;

    constructor(address _owner)
        Owned(_owner)
        public
    {}

    function setTarget(Proxyable _target)
        external
        onlyOwner
    {
        target = _target;
        emit TargetUpdated(_target);
    }

    function setUseDELEGATECALL(bool value) 
        external
        onlyOwner
    {
        useDELEGATECALL = value;
    }

    function _emit(bytes callData, uint numTopics, bytes32 topic1, bytes32 topic2, bytes32 topic3, bytes32 topic4)
        external
        onlyTarget
    {
        uint size = callData.length;
        bytes memory _callData = callData;

        assembly {
            /* The first 32 bytes of callData contain its length (as specified by the abi). 
             * Length is assumed to be a uint256 and therefore maximum of 32 bytes
             * in length. It is also leftpadded to be a multiple of 32 bytes.
             * This means moving call_data across 32 bytes guarantees we correctly access
             * the data itself. */
            switch numTopics
            case 0 {
                log0(add(_callData, 32), size)
            } 
            case 1 {
                log1(add(_callData, 32), size, topic1)
            }
            case 2 {
                log2(add(_callData, 32), size, topic1, topic2)
            }
            case 3 {
                log3(add(_callData, 32), size, topic1, topic2, topic3)
            }
            case 4 {
                log4(add(_callData, 32), size, topic1, topic2, topic3, topic4)
            }
        }
    }

    function()
        external
        payable
    {
        if (useDELEGATECALL) {
            assembly {
                /* Copy call data into free memory region. */
                let free_ptr := mload(0x40)
                calldatacopy(free_ptr, 0, calldatasize)

                /* Forward all gas and call data to the target contract. */
                let result := delegatecall(gas, sload(target_slot), free_ptr, calldatasize, 0, 0)
                returndatacopy(free_ptr, 0, returndatasize)

                /* Revert if the call failed, otherwise return the result. */
                if iszero(result) { revert(free_ptr, returndatasize) }
                return(free_ptr, returndatasize)
            }
        } else {
            /* Here we are as above, but must send the messageSender explicitly 
             * since we are using CALL rather than DELEGATECALL. */
            target.setMessageSender(msg.sender);
            assembly {
                let free_ptr := mload(0x40)
                calldatacopy(free_ptr, 0, calldatasize)

                /* We must explicitly forward ether to the underlying contract as well. */
                let result := call(gas, sload(target_slot), callvalue, free_ptr, calldatasize, 0, 0)
                returndatacopy(free_ptr, 0, returndatasize)

                if iszero(result) { revert(free_ptr, returndatasize) }
                return(free_ptr, returndatasize)
            }
        }
    }

    modifier onlyTarget {
        require(Proxyable(msg.sender) == target, "Must be proxy target");
        _;
    }

    event TargetUpdated(Proxyable newTarget);
}

Contract Security Audit

Contract ABI

[{"constant":false,"inputs":[{"name":"_owner","type":"address"}],"name":"nominateNewOwner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"nominatedOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_target","type":"address"}],"name":"setTarget","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"acceptOwnership","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":"callData","type":"bytes"},{"name":"numTopics","type":"uint256"},{"name":"topic1","type":"bytes32"},{"name":"topic2","type":"bytes32"},{"name":"topic3","type":"bytes32"},{"name":"topic4","type":"bytes32"}],"name":"_emit","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"useDELEGATECALL","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"value","type":"bool"}],"name":"setUseDELEGATECALL","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"target","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_owner","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"newTarget","type":"address"}],"name":"TargetUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"newOwner","type":"address"}],"name":"OwnerNominated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"oldOwner","type":"address"},{"indexed":false,"name":"newOwner","type":"address"}],"name":"OwnerChanged","type":"event"}]

Deployed Bytecode

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Libraries Used


Swarm Source

bzzr://4bca7a8142e5efe23616315f58e7703485e53941970886ceb05f20ab767ddea0

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OVERVIEW

The legacy proxy token contract for Synthetix: Proxy sEUR Token.

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