I wonder if seif project's ideas could be helpful here: https://github.com/paypal/seifnode. I remember Crockford talking about using microphone and camera noise to generate random numbers.
You should inspect your browser's request to see exactly which headers and data it is sending. The best way to do that is to use some proxy like burp, but maybe event browser's console will be good enough.
According to their docs it should: http://docs.sequelizejs.com/en/latest/ I think it is only a matter of configuration and driver used. I did not have a chance to try it out with PostgreSQL though.