Is there a way to determine the number of people who are actually using Bitcoin till date? Who would have access to such information? Meaning a way to find out, how many new people have used Bitcoin in 2016 , so that we can say exponential growth is natural not artificially created by hoarders.
in my opinion it is not easy to predict whether any particular number of people using bitcoin .
because every user has multiple adress , multiple wallet and also many bitcoin services account , so we can't predict of find out how many persons are involve in the bitcoin .