I think btc is the fastest growing crytocurrency and it is the top in the cryptocurrency market.The price of bitcoin has frequently increased and everythime it goes up and after sometime it goes down.It has been happening from the start.From, now i think btc is going to increase only as it has decreased few months ago.Btc is coin which sa been most invested cryptocurrency.When the price of bitcoin was 4k it was just perfect time to invest.Up to this year the Btc price will go upto 30k.It really great seeing your post.