It doesn't really matter who hosts the database. I specifically was talking about middleman, as in someone who confirms the person is infected and then takes ca

It doesn't really matter who hosts the database. I specifically was talking about middleman, as in someone who confirms the person is infected and then takes care of passing 14 days of keys to the server. Where the server is isn't really relevant here, just that the end-user doesn't have direct access to it.