Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

library SafeMath    - function mul(uint256 a, uint256 b)    - function div(uint256 a, uint256 b)    - function sub(uint256 a, uint256 b)    - function add(uint256 a, uint256 b)  contract ERC20Basic    - function totalSupply()    - function balanceOf(address addr)    - function transfer(address to, uint256 ...  contract ERC20 is ERC20Basic    - function allowance(address owner, add ...    - function transferFrom(address from, a ...    - function approve(address agent, uint2 ...  contract BasicToken is ERC20Basic    - function totalSupply()    - function balanceOf(address addr)    - function transfer(address to, uint256 ...  contract StandardToken is ERC20, B ...    - function transferFrom(address from, a ...    - function approve(address agent, uint2 ...    - function allowance(address owner, add ...    - function increaseApproval(address age ...    - function decreaseApproval(address age ...  contract CWVToken is StandardToken *

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-05-31
*/

pragma solidity ^0.4.23;


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 ERC20Basic {
  // events
  event Transfer(address indexed from, address indexed to, uint256 value);

  // public functions
  function totalSupply() public view returns (uint256);
  function balanceOf(address addr) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
}


contract ERC20 is ERC20Basic {
  // events
  event Approval(address indexed owner, address indexed agent, uint256 value);

  // public functions
  function allowance(address owner, address agent) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address agent, uint256 value) public returns (bool);

}


contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  // public variables
  string public name;
  string public symbol;
  uint8 public decimals = 18;

  // internal variables
  uint256 _totalSupply;
  mapping(address => uint256) _balances;

  // events

  // public functions
  function totalSupply() public view returns (uint256) {
    return _totalSupply;
  }

  function balanceOf(address addr) public view returns (uint256 balance) {
    return _balances[addr];
  }

  function transfer(address to, uint256 value) public returns (bool) {
    require(to != address(0));
    require(value <= _balances[msg.sender]);

    _balances[msg.sender] = _balances[msg.sender].sub(value);
    _balances[to] = _balances[to].add(value);
    emit Transfer(msg.sender, to, value);
    return true;
  }

  // internal functions

}


contract StandardToken is ERC20, BasicToken {
  // public variables

  // internal variables
  mapping (address => mapping (address => uint256)) _allowances;

  // events

  // public functions
  function transferFrom(address from, address to, uint256 value) public returns (bool) {
    require(to != address(0));
    require(value <= _balances[from]);
    require(value <= _allowances[from][msg.sender]);

    _balances[from] = _balances[from].sub(value);
    _balances[to] = _balances[to].add(value);
    _allowances[from][msg.sender] = _allowances[from][msg.sender].sub(value);
    emit Transfer(from, to, value);
    return true;
  }

  function approve(address agent, uint256 value) public returns (bool) {
    _allowances[msg.sender][agent] = value;
    emit Approval(msg.sender, agent, value);
    return true;
  }

  function allowance(address owner, address agent) public view returns (uint256) {
    return _allowances[owner][agent];
  }

  function increaseApproval(address agent, uint value) public returns (bool) {
    _allowances[msg.sender][agent] = _allowances[msg.sender][agent].add(value);
    emit Approval(msg.sender, agent, _allowances[msg.sender][agent]);
    return true;
  }

  function decreaseApproval(address agent, uint value) public returns (bool) {
    uint allowanceValue = _allowances[msg.sender][agent];
    if (value > allowanceValue) {
      _allowances[msg.sender][agent] = 0;
    } else {
      _allowances[msg.sender][agent] = allowanceValue.sub(value);
    }
    emit Approval(msg.sender, agent, _allowances[msg.sender][agent]);
    return true;
  }
  // internal functions
}


contract CWVToken is StandardToken {
  // public variables
  string public name = "CWV Chain";
  string public symbol = "CWV";
  uint8 public decimals = 18;

  // internal variables

  // events

  // public functions
  constructor() public {
    //init _totalSupply
    _totalSupply = 10000000000 * (10 ** uint256(decimals));

    _balances[msg.sender] = _totalSupply;
    emit Transfer(0x0, msg.sender, _totalSupply);
  }


  // internal functions
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"agent","type":"address"},{"name":"value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"from","type":"address"},{"name":"to","type":"address"},{"name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"agent","type":"address"},{"name":"value","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"addr","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"agent","type":"address"},{"name":"value","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"owner","type":"address"},{"name":"agent","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"agent","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]

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

bzzr://7c72b9d7ae73e53b87adc1ba027f21c9c06c4da973530d29ad9ffad5d7fc1d22