There's a Bitcoin ETF now. That should serve as a good proxy for crypto hype.
The BITO ETF doesn't hold Bitcoin but instead holds CME futures contracts. Scroll down to Holdings. [2] I would strongly encourage folks who do not know the difference between holding the underlying asset and holding futures contracts to avoid aping into this.
[1] https://ycharts.com/companies/GBTC/discount_or_premium_to_na...