I never liked the word "Bubble" do describe these things because they rarely pop like bubbles. Physical bubbles inflate relatively gradually and pop very rapidly. Asset bubbles usually don't. The Nasdaq bubble took roughly 6 years to inflate and 3 years to "pop". The real estate bubble took about 11 years to inflate and 6 years to fully deflate. IMHO "balloon" might be a better term.
It's possible we could wake up tomorrow in a world where Bitcoin is trading for $10, but I doubt it. Even if today ends up representing the peak in hindsight, I'm (literally) betting that it will take years to fully deflate.
https://finance.yahoo.com/quote/OSTK/options?p=OSTK&date=152...
One look at their performance graph this year, and you'll see it's almost correlated with bitcoin prices.
It was very easy to see that the price did not reflect the fundamentals. And Bitcoin is similar. The fundamentals of Bitcoin do not support the price.
Also in terms of putting your money where your mouth is, there isn't any reliable way to profit off of bubble's unless you know the timing. And that's very hard. There are no laws of the universe that keep Bitcoin from rising for another 12 years, or tripling in value before it crashes.