contract BCEToken {
    
    using SafeMath for uint256;
    
    uint public constant _totalSupply = 21000000; // FOR SUPPLY = 0, DELETE "constant"
    
    string public constant symbol = "BCE";
    string public constant name = "Bitcoin Ether";
    uint8 public constant decimals = 18;
	uint256 public constant totalSupply = _totalSupply * 10 ** uint256(decimals);
    
    // 1 ether = 500 gigs
    uint256 public constant RATE = 500; 
    
    //FOR INITIAL SUPPLY = 0:
    //address public owner;
    
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
    
    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;
    
    //FOR INITIAL SUPPLY = 0:
    /*
		 function () public payable {
        createTokens();
    	} 
	*/
    
    function GigsToken() public {
        balances[msg.sender] = totalSupply;
        
        //FOR INITIAL SUPPLY = 0:
        //owner = msg.sender;
    }
    
    //FOR INITIAL SUPPLY = 0:
    /*
		 function createTokens() public payable {
        require(msg.value > 0);
        uint256 tokens = msg.value.mul(RATE);
        balances[msg.sender] = balances[msg.sender].add(tokens);
        _totalSupply = _totalSupply.add(tokens);
        owner.transfer(msg.value);
    	} 
	*/
    
    function balanceOf(address _owner) public constant returns (uint256 balance){
        return balances[_owner];
    }
    function transfer(address _to, uint256 _value) internal returns (bool success) {
		 require(_to != 0x0);
        require(balances[msg.sender] >= _value && _value > 0);
        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, uint256 _value) public returns (bool success){
		 require(_to != 0x0);
        require(allowed [_from][msg.sender] >= 0 && balances[_from] >= _value && _value > 0);
        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 success){
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }
    function allowance(address _owner, address _spender) public constant returns (uint256 remaining){
        return allowed[_owner][_spender];
    }
    

}
function balanceOf(address _owner) public constant returns (uint256 balance){
    return balances[_owner];
}

/*
 		 function createTokens() public payable {
 require(msg.value > 0);
 uint256 tokens = msg.value.mul(RATE);
 balances[msg.sender] = balances[msg.sender].add(tokens);
 _totalSupply = _totalSupply.add(tokens);
 owner.transfer(msg.value);
 	} 
 	*/