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Contract Overview | Paxos_Standard
Balance: 0 Ether
Ether Value: $0
Transactions: 13016 txns
Token Tracker: Paxos Standard (PAX)
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0xe0272ce96b2b9e6570bb958d497cab0b705a9055e67d1f9c09bd882df204826b16 mins ago0xcbc77d55556c698e749e08feba6cadd36250d574  IN   Paxos_Standard0 Ether0.000273053
0xf29c44310a8fd04b1478a6139ad89578a53608149b12129ce9baaf89c2642d4c16 mins ago0xefa09337da58c406d6fe229849b4d7539003d348  IN   Paxos_Standard0 Ether0.000272349
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0xc20d866888aaab3ee91155471a7edc072183f01cfdae78fbf1e0ae35522f644219 mins ago0x324cc2c9fb379ea7a0d1c0862c3b48ca28d174a4  IN   Paxos_Standard0 Ether0.00109646
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0xf2981ea42c9d44e7bf34409b333ce46b0821e75d170477d2c0d9656e766fd2a629 mins agoBinance_1  IN   Paxos_Standard0 Ether0.00119469
0x85829e66f781619d699f3307d6a3e6fcb197ce5ebb891a007674bc941310230f38 mins agoBinance_1  IN   Paxos_Standard0 Ether0.00164469
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0xe2c227fe46888c11beed2896bf7074e386a8ad2d9b0b030d4d3c614c4801ac7459 mins ago0xf4f5dfc21e36da84001be2aa09fe2c87231ba666  IN   Paxos_Standard0 Ether0.000273757
0xb00aae8d7112a319c8daff920562dab8e65a48060236f9a0297225cf26de634f59 mins ago0x10c76b1d903afb9d977f6218612edaa5fa4c6360  IN   Paxos_Standard0 Ether0.00074085
0xa47966414160f71ab8051c08b0df54a11d9a7677d8e2e541b7da4cd0242d737c1 hr 5 mins ago0xa8978b4949231f36752d077cf2c3f75d54220e7e  IN   Paxos_Standard0 Ether0.000273053
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0x82749d038f1698516869c207073c974244414080f4f34f70241b4966b085846b1 hr 10 mins agoOkex_1  IN   Paxos_Standard0 Ether0.001370575
0xc4654abcb0695d214a8cfcf840ee2efbf3454a857205872bba74d2f8c47a92cd1 hr 15 mins ago0x9e42d319ef7b7676e82342513fc8537881d953f7  IN   Paxos_Standard0 Ether0.000273053
0x46212d1d8d87921e34bded2003866f6f29faf26e7a4b7e1c1af65887610285ff1 hr 18 mins ago0x1c217040d48da2b42401a215505de75b2130bf36  IN   Paxos_Standard0 Ether0.00079518
0xe48cdda8414e3ff9dd087acef67d0f3cd4c211731c550bfca41ab88bc56def861 hr 21 mins ago0x6485fc77be2186fc60feea38d0ef4331d8404b60  IN   Paxos_Standard0 Ether0.0017561943
0xf202fc165474c65f4d158b0298050d377f09fc448933172b462e539f9ceb1fe21 hr 24 mins agoBinance_1  IN   Paxos_Standard0 Ether0.00164469
0x2dc3590935321210d0c45dc9b9f3d74d97b705142f7466db2a4d2a9864bced561 hr 24 mins agoBinance_4  IN   Paxos_Standard0 Ether0.00164469
0x29a26e285756c99691afb83d73b28ddcb9ea7450332efcbd3edefb16764128041 hr 26 mins ago0x53517eb9d36fae26f1dc6e9586cb295f7ec7040e  IN   Paxos_Standard0 Ether0.0005414
0x6f4872fea09afdf44de512265ded934a91aca50af19bc594cb7d3dedf6ad30041 hr 26 mins ago0x279494aef7e4c1c4365c58e542bbf07769f094d0  IN   Paxos_Standard0 Ether0.0005414
0xb444ad4df174b1a93b4692f7c72eb1a685575c351be64e8c45459a4434725c171 hr 27 mins agoHuobi_11  IN   Paxos_Standard0 Ether0.003508672
0xa460e32730a0b79c8c518615e3a0045a99e14c88ff8e3faff805f139901c95281 hr 33 mins ago0x072c9cb376f6c8b506574721d09d647661a03c19  IN   Paxos_Standard0 Ether0.00074085
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Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity) SolidityCompiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: AdminUpgradeabilityProxy
Compiler Text: v0.4.24+commit.e67f0147
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.24;

// File: contracts/zeppelin/Proxy.sol

/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
contract Proxy {
    /**
     * @dev Fallback function.
     * Implemented entirely in `_fallback`.
     */
    function () payable external {
        _fallback();
    }

    /**
     * @return The Address of the implementation.
     */
    function _implementation() internal view returns (address);

    /**
     * @dev Delegates execution to an implementation contract.
     * This is a low level function that doesn't return to its internal call site.
     * It will return to the external caller whatever the implementation returns.
     * @param implementation Address to delegate.
     */
    function _delegate(address implementation) internal {
        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 Function that is run as the first thing in the fallback function.
     * Can be redefined in derived contracts to add functionality.
     * Redefinitions must call super._willFallback().
     */
    function _willFallback() internal {
    }

    /**
     * @dev fallback implementation.
     * Extracted to enable manual triggering.
     */
    function _fallback() internal {
        _willFallback();
        _delegate(_implementation());
    }
}

// File: contracts/zeppelin/AddressUtils.sol

/**
 * Utility library of inline functions on addresses
 */
library AddressUtils {

    /**
     * Returns whether the target address is a contract
     * @dev This function will return false if invoked during the constructor of a contract,
     * as the code is not actually created until after the constructor finishes.
     * @param addr address to check
     * @return whether the target address is a contract
     */
    function isContract(address addr) internal view returns (bool) {
        uint256 size;
        // XXX Currently there is no better way to check if there is a contract in an address
        // than to check the size of the code at that address.
        // See https://ethereum.stackexchange.com/a/14016/36603
        // for more details about how this works.
        // TODO Check this again before the Serenity release, because all addresses will be
        // contracts then.
        // solium-disable-next-line security/no-inline-assembly
        assembly { size := extcodesize(addr) }
        return size > 0;
    }

}

// File: contracts/zeppelin/UpgradeabilityProxy.sol

/**
 * @title UpgradeabilityProxy
 * @dev This contract implements a proxy that allows to change the
 * implementation address to which it will delegate.
 * Such a change is called an implementation upgrade.
 */
contract UpgradeabilityProxy is Proxy {
    /**
     * @dev Emitted when the implementation is upgraded.
     * @param implementation Address of the new implementation.
     */
    event Upgraded(address implementation);

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "org.zeppelinos.proxy.implementation", and is
     * validated in the constructor.
     */
    bytes32 private constant IMPLEMENTATION_SLOT = 0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3;

    /**
     * @dev Contract constructor.
     * @param _implementation Address of the initial implementation.
     */
    constructor(address _implementation) public {
        assert(IMPLEMENTATION_SLOT == keccak256("org.zeppelinos.proxy.implementation"));

        _setImplementation(_implementation);
    }

    /**
     * @dev Returns the current implementation.
     * @return Address of the current implementation
     */
    function _implementation() internal view returns (address impl) {
        bytes32 slot = IMPLEMENTATION_SLOT;
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     * @param newImplementation Address of the new implementation.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Sets the implementation address of the proxy.
     * @param newImplementation Address of the new implementation.
     */
    function _setImplementation(address newImplementation) private {
        require(AddressUtils.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");

        bytes32 slot = IMPLEMENTATION_SLOT;

        assembly {
            sstore(slot, newImplementation)
        }
    }
}

// File: contracts/zeppelin/AdminUpgradeabilityProxy.sol

/**
 * @title AdminUpgradeabilityProxy
 * @dev This contract combines an upgradeability proxy with an authorization
 * mechanism for administrative tasks.
 * All external functions in this contract must be guarded by the
 * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
 * feature proposal that would enable this to be done automatically.
 */
contract AdminUpgradeabilityProxy is UpgradeabilityProxy {
    /**
     * @dev Emitted when the administration has been transferred.
     * @param previousAdmin Address of the previous admin.
     * @param newAdmin Address of the new admin.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "org.zeppelinos.proxy.admin", and is
     * validated in the constructor.
     */
    bytes32 private constant ADMIN_SLOT = 0x10d6a54a4754c8869d6886b5f5d7fbfa5b4522237ea5c60d11bc4e7a1ff9390b;

    /**
     * @dev Modifier to check whether the `msg.sender` is the admin.
     * If it is, it will run the function. Otherwise, it will delegate the call
     * to the implementation.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * Contract constructor.
     * It sets the `msg.sender` as the proxy administrator.
     * @param _implementation address of the initial implementation.
     */
    constructor(address _implementation) UpgradeabilityProxy(_implementation) public {
        assert(ADMIN_SLOT == keccak256("org.zeppelinos.proxy.admin"));

        _setAdmin(msg.sender);
    }

    /**
     * @return The address of the proxy admin.
     */
    function admin() external view ifAdmin returns (address) {
        return _admin();
    }

    /**
     * @return The address of the implementation.
     */
    function implementation() external view ifAdmin returns (address) {
        return _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     * Only the current admin can call this function.
     * @param newAdmin Address to transfer proxy administration to.
     */
    function changeAdmin(address newAdmin) external ifAdmin {
        require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the backing implementation of the proxy.
     * Only the admin can call this function.
     * @param newImplementation Address of the new implementation.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @dev Upgrade the backing implementation of the proxy and call a function
     * on the new implementation.
     * This is useful to initialize the proxied contract.
     * @param newImplementation Address of the new implementation.
     * @param data Data to send as msg.data in the low level call.
     * It should include the signature and the parameters of the function to be
     * called, as described in
     * https://solidity.readthedocs.io/en/develop/abi-spec.html#function-selector-and-argument-encoding.
     */
    function upgradeToAndCall(address newImplementation, bytes data) payable external ifAdmin {
        _upgradeTo(newImplementation);
        require(address(this).call.value(msg.value)(data));
    }

    /**
     * @return The admin slot.
     */
    function _admin() internal view returns (address adm) {
        bytes32 slot = ADMIN_SLOT;
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Sets the address of the proxy admin.
     * @param newAdmin Address of the new proxy admin.
     */
    function _setAdmin(address newAdmin) internal {
        bytes32 slot = ADMIN_SLOT;

        assembly {
            sstore(slot, newAdmin)
        }
    }

    /**
     * @dev Only fall back when the sender is not the admin.
     */
    function _willFallback() internal {
        require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
        super._willFallback();
    }
}

    Contract ABI  
[{"constant":false,"inputs":[{"name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"newImplementation","type":"address"},{"name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"implementation","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"admin","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_implementation","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"previousAdmin","type":"address"},{"indexed":false,"name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"implementation","type":"address"}],"name":"Upgraded","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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    Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000006ffcb0f00c3ad2575e443152d8861aec1bda9ce6

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000006ffcb0f00c3ad2575e443152d8861aec1bda9ce6


   Swarm Source:
bzzr://e6a0e94ea36527366a6a00202c99a28a36e0c44d2d0594a734640045e7169670

 

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