RE: New All-Time High daily close for Bitcoin @ $64,30320 Oct 2021 08:54
You are right that there is no official open/close to the crypto markets, but there is an assumed official one. There has to be an "open/close" time or how would there be any hourly, daily, weekly, monthly data available if there was not a global time delta used by everyone to produce the data?
As far as I know there is actually a 6 minute