db.UserModel.find({ 'username': username }, function(error, documents) {
        if (!error) {
            if (documents.length == 0) {
                if (password == confirmation) {
                    recaptcha.verify(function(success, errorCode) {
                        if (success) {
                            var user = new db.UserModel();
                            var shasum = crypto.createHash('sha1');
                            shasum.update(password);

                            // Save to Database
                            user.username = username;
                            user.password = shasum.digest('hex');
                            user.save(function(error) {
                                if (!error) {
                                    req.session.login = username;
                                    res.json({ 'username': username }, 201);
                                }
                                else
                                    res.send('Database error, please try again shortly.', 503);
                            });
                        }
                        else
                            res.send('Invalid Captcha.', 400);
                    });
                }
                else
                    res.send('Wrong password confirmation.', 400);
            }
            else
                res.send('Username already taken by another user.', 400);
        }
        else
            res.send('Database error, please try again shortly.', 503);
    });