Like my friend told me. This is because of the big BTC meeting, that taking place first of August, and it will decide the future of Bitcoin. this is simply the fall, before the rise. I dont know any big detail, but he said not to worry. Everything is speculative ofc, but he told me that the value of BTC s going to go up to 4000 USD in the end of August. Im going to invest in some coin, and now is the right time. Ofc dont bet everything on one coin