No one can determine that the current price range is bottom range of bitcoin, and altcoins in this year.
It's too hard to make such a conclusion on the bottoms.
So, let's hope that Bitcoin already hit it bottom, then from which will recover and make good impacts on altcoins and tokens.
The level it is at the moment doesnt seem to be a bad place to start off as buttom. No doubt once BTC starts recovering all alts will follow suit.