Contract Name:
CyberVeinToken
Contract Source Code:
File 1 of 1 : CyberVeinToken
pragma solidity ^0.4.18;
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) {
uint256 c = a / b;
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 {
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;
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);
Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
}
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;
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;
}
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
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;
}
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 CyberVeinToken is StandardToken {
string public constant name = "CyberVeinToken";
string public constant symbol = "CVT";
uint8 public constant decimals = 18;
uint256 public constant TOTAL_SUPPLY = 2 ** 31 * (10 ** uint256(decimals));
uint256 public constant PRIVATESALE_SUPPLY = TOTAL_SUPPLY * 60 / 100;
uint256 public constant PROJECTOPERATION_SUPPLY = TOTAL_SUPPLY * 25 / 100;
uint256 public constant TEAM_AND_ANGEL_SUPPLY = TOTAL_SUPPLY * 15 / 100;
// beneficiary of tokens after they are released
address public privatesale_beneficiary;
address public projectoperation_beneficiary;
address public team_and_angel_beneficiary;
// timestamp when token release is enabled
uint256 public releaseTime;
bool public released;
function CyberVeinToken(address _privatesale_beneficiary, address _projectoperation_beneficiary, address _team_and_angel_beneficiary, uint256 _releaseTime) public {
require(_releaseTime > now);
totalSupply = TOTAL_SUPPLY;
privatesale_beneficiary = _privatesale_beneficiary;
projectoperation_beneficiary = _projectoperation_beneficiary;
team_and_angel_beneficiary = _team_and_angel_beneficiary;
releaseTime = _releaseTime;
released = false;
balances[privatesale_beneficiary] = PRIVATESALE_SUPPLY;
balances[projectoperation_beneficiary] = PROJECTOPERATION_SUPPLY;
}
function release() public {
require(released == false);
require(now >= releaseTime);
balances[team_and_angel_beneficiary] = TEAM_AND_ANGEL_SUPPLY;
released = true;
}
}