Bitcoin Is
Highly liquid
Globally traded
Widely used in leverage structures
Without policy backstop
24/7 repricing
As @LukeGromen says Bitcoin is the last functioning smoke alarm of liquidity
Maybe it's telling us something
If your liabilities are denominated in Yen and you hold bond assets in USD, you are taking currency risk. If USD falls relative to Yen then that hurts your balance sheet. But if you hold JGB and the Yen collapses then so too do the value of your liabilities!
Suppose we want the distance from a basketball hoop such that, with X people shooting simultaneously, one shot is made. We start at the 3 point line.
1 person takes 1 min to make it
But 2 people can do in 30 seconds.
So we move the 2 shooters back to make the shot harder.
...and we keep moving the shot back as we get more shooters.
This is difficultly adjustment in bitcoin mining!