Contract Source Code:
File 1 of 1 : JOT
pragma solidity ^0.4.15;
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || 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 Base {
modifier only(address allowed) {
require(msg.sender == allowed);
_;
}
}
contract Owned is Base {
address public owner;
address newOwner;
function Owned() public {
owner = msg.sender;
}
function transferOwnership(address _newOwner) only(owner) public {
newOwner = _newOwner;
}
function acceptOwnership() only(newOwner) public {
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
event OwnershipTransferred(address indexed _from, address indexed _to);
}
contract ERC20 is Owned {
using SafeMath for uint;
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
function transfer(address _to, uint _value) isStartedOnly public returns (bool success) {
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;
}
function transferFrom(address _from, address _to, uint _value) isStartedOnly public returns (bool success) {
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 balanceOf(address _owner) constant public returns (uint balance) {
return balances[_owner];
}
function approve_fixed(address _spender, uint _currentValue, uint _value) isStartedOnly public returns (bool success) {
if(allowed[msg.sender][_spender] == _currentValue){
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
} else {
return false;
}
}
function approve(address _spender, uint _value) isStartedOnly public returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant public returns (uint remaining) {
return allowed[_owner][_spender];
}
mapping (address => uint) balances;
mapping (address => mapping (address => uint)) allowed;
uint public totalSupply;
bool public isStarted = false;
modifier isStartedOnly() {
require(isStarted);
_;
}
}
contract JOT is ERC20 {
using SafeMath for uint;
string public name = "Jury.Online Token";
string public symbol = "JOT";
uint8 public decimals = 18;
modifier isNotStartedOnly() {
require(!isStarted);
_;
}
function getTotalSupply()
public
constant
returns(uint)
{
return totalSupply;
}
function start()
public
only(owner)
isNotStartedOnly
{
isStarted = true;
}
//================= Crowdsale Only =================
function mint(address _to, uint _amount) public
only(owner)
isNotStartedOnly
returns(bool)
{
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Transfer(msg.sender, _to, _amount);
return true;
}
function multimint(address[] dests, uint[] values) public
only(owner)
isNotStartedOnly
returns (uint) {
uint i = 0;
while (i < dests.length) {
mint(dests[i], values[i]);
i += 1;
}
return(i);
}
}