Theres a reason why Bitcoin was called a bubble..
I strongly believe Cryptocurrency will bounce back... but in a different form with a higher hash function than SHA-256 and probably strictly managed by some elements within the G8.
Bitcoin was a test but the world must still go fully digital in basic finance administration and other areas as well
I have high hopes in crypto currencies. It is increasingly recovering right now though not that high from 2017. I still believe that it will go up to its peak. Many are hoping for this day. I hope 2019 is a good year to excel.