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
In any case, I dont think Bitcoin is a bubble today. After all, it has already become a full-fledged world currency, which provides important benefits for users from different countries of the world. Therefore, I am fully confident that soon BTC will be able to restore its high positions.