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Contract

0x8dB54ca569D3019A2ba126D03C37c44b5eF81EF6
 
Transaction Hash
Method
Block
From
To
Transfer212408952024-11-22 4:30:2342 hrs ago1732249823IN
DataWallet Token
0 ETH0.0004833212.97069999
Transfer212408572024-11-22 4:22:4742 hrs ago1732249367IN
DataWallet Token
0 ETH0.0005784210.64005404
Transfer204527662024-08-04 4:22:11111 days ago1722745331IN
DataWallet Token
0 ETH0.000049581
Approve204407202024-08-02 12:00:11113 days ago1722600011IN
DataWallet Token
0 ETH0.000100422.06781219
Transfer204093832024-07-29 2:57:47117 days ago1722221867IN
DataWallet Token
0 ETH0.000043551.34004647
Transfer204093822024-07-29 2:57:35117 days ago1722221855IN
DataWallet Token
0 ETH0.000042251.30015728
Transfer204093802024-07-29 2:57:11117 days ago1722221831IN
DataWallet Token
0 ETH0.00006171.24430011
Transfer203321052024-07-18 8:06:47128 days ago1721290007IN
DataWallet Token
0 ETH0.0020149362
Transfer203249442024-07-17 8:06:23129 days ago1721203583IN
DataWallet Token
0 ETH0.000426668.60237393
Approve201900142024-06-28 11:54:11148 days ago1719575651IN
DataWallet Token
0 ETH0.000223064.58758631
Transfer191442572024-02-03 0:24:11294 days ago1706919851IN
DataWallet Token
0 ETH0.0012350224.91227552
Approve189114542024-01-01 8:38:47327 days ago1704098327IN
DataWallet Token
0 ETH0.000429548.83408175
Transfer187325902023-12-07 6:19:59352 days ago1701929999IN
DataWallet Token
0 ETH0.0020335137.38965769
Transfer184263462023-10-25 9:25:35395 days ago1698225935IN
DataWallet Token
0 ETH0.0006543513.19601162
Transfer183696252023-10-17 10:53:47403 days ago1697540027IN
DataWallet Token
0 ETH0.0018517557
Transfer183696252023-10-17 10:53:47403 days ago1697540027IN
DataWallet Token
0 ETH0.0018510757
Transfer172463232023-05-12 20:26:35561 days ago1683923195IN
DataWallet Token
0 ETH0.0035598371.77238268
Transfer170588212023-04-16 10:19:35587 days ago1681640375IN
DataWallet Token
0 ETH0.0013564427.34830463
Transfer170292562023-04-12 3:26:11591 days ago1681269971IN
DataWallet Token
0 ETH0.0010216120.59742893
Approve167049802023-02-25 11:23:35637 days ago1677324215IN
DataWallet Token
0 ETH0.0010054120.67729335
Transfer165179922023-01-30 6:56:59663 days ago1675061819IN
DataWallet Token
0 ETH0.0007076814.26817388
Transfer165116132023-01-29 9:34:47664 days ago1674984887IN
DataWallet Token
0 ETH0.0004677614.39320115
Transfer165109002023-01-29 7:10:59664 days ago1674976259IN
DataWallet Token
0 ETH0.0007246114.60941065
Transfer164910042023-01-26 12:31:11667 days ago1674736271IN
DataWallet Token
0 ETH0.0007365914.85468543
Approve163649122023-01-08 21:59:23685 days ago1673215163IN
DataWallet Token
0 ETH0.0011094922.81775322
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Contract Source Code Verified (Exact Match)

Contract Name:
DataWalletToken

Compiler Version
v0.4.18+commit.9cf6e910

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2018-02-04
*/

pragma solidity ^0.4.13;

library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}

contract Ownable {
  address public owner;


  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() public {
    owner = msg.sender;
  }


  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }


  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) public onlyOwner {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}

contract Pausable is Ownable {
  event Pause();
  event Unpause();

  bool public paused = false;


  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   */
  modifier whenNotPaused() {
    require(!paused);
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   */
  modifier whenPaused() {
    require(paused);
    _;
  }

  /**
   * @dev called by the owner to pause, triggers stopped state
   */
  function pause() onlyOwner whenNotPaused public {
    paused = true;
    Pause();
  }

  /**
   * @dev called by the owner to unpause, returns to normal state
   */
  function unpause() onlyOwner whenPaused public {
    paused = false;
    Unpause();
  }
}

contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(_value <= balances[msg.sender]);

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256 balance) {
    return balances[_owner];
  }

}

contract BurnableToken is BasicToken {

    event Burn(address indexed burner, uint256 value);

    /**
     * @dev Burns a specific amount of tokens.
     * @param _value The amount of token to be burned.
     */
    function burn(uint256 _value) public {
        require(_value <= balances[msg.sender]);
        // no need to require value <= totalSupply, since that would imply the
        // sender's balance is greater than the totalSupply, which *should* be an assertion failure

        address burner = msg.sender;
        balances[burner] = balances[burner].sub(_value);
        totalSupply = totalSupply.sub(_value);
        Burn(burner, _value);
    }
}

contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract StandardToken is ERC20, BasicToken {

  mapping (address => mapping (address => uint256)) internal allowed;


  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   *
   * Beware that changing an allowance with this method brings the risk that someone may use both the old
   * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
   * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifying the amount of tokens still available for the spender.
   */
  function allowance(address _owner, address _spender) public view returns (uint256) {
    return allowed[_owner][_spender];
  }

  /**
   * @dev Increase the amount of tokens that an owner allowed to a spender.
   *
   * approve should be called when allowed[_spender] == 0. To increment
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _addedValue The amount of tokens to increase the allowance by.
   */
  function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
   * @dev Decrease the amount of tokens that an owner allowed to a spender.
   *
   * approve should be called when allowed[_spender] == 0. To decrement
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _subtractedValue The amount of tokens to decrease the allowance by.
   */
  function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}

contract PausableToken is StandardToken, Pausable {

  function transfer(address _to, uint256 _value) public whenNotPaused returns (bool) {
    return super.transfer(_to, _value);
  }

  function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool) {
    return super.transferFrom(_from, _to, _value);
  }

  function approve(address _spender, uint256 _value) public whenNotPaused returns (bool) {
    return super.approve(_spender, _value);
  }

  function increaseApproval(address _spender, uint _addedValue) public whenNotPaused returns (bool success) {
    return super.increaseApproval(_spender, _addedValue);
  }

  function decreaseApproval(address _spender, uint _subtractedValue) public whenNotPaused returns (bool success) {
    return super.decreaseApproval(_spender, _subtractedValue);
  }
}

contract DataWalletToken is PausableToken, BurnableToken {

    string public constant name = "DataWallet Token";
    string public constant symbol = "DXT";
    uint8 public constant decimals = 8;
    uint256 public constant INITIAL_SUPPLY = 1000000000 * 10**uint256(decimals);
    
    /**
    * @dev DataWalletToken Constructor
    */

    function DataWalletToken() public {
        totalSupply = INITIAL_SUPPLY;   
        balances[msg.sender] = INITIAL_SUPPLY;
    }

    function transfer(address beneficiary, uint256 amount) public returns (bool) {
        if (msg.sender != owner) {
            require(!paused);
        }
        require(beneficiary != address(0));
        require(amount <= balances[msg.sender]);

        // SafeMath.sub will throw if there is not enough balance.
        balances[msg.sender] = balances[msg.sender].sub(amount);
        balances[beneficiary] = balances[beneficiary].add(amount);
        Transfer(msg.sender, beneficiary, amount);
        return true;
    }
}

Contract Security Audit

Contract ABI

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Swarm Source

bzzr://761563dcbd9e82808cee25a5850c4a1900586ada4f76bc058e65720e511809b1

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OVERVIEW

Datawallet provides users with a self-sovereign wallet that puts them in charge of their data, and allows them to monetize as well as utilize an asset that is rightfully theirs.

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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.