You mean the central bank thing?

Sure, it's official from the Bank for International Settlements itself, i.e., the world's central bank cartel:

https://www.bis.org/bcbs/publ/d545.htm

Here's a plain-language press article:

https://coinedition.com/bis-allows-banks-to-hold-2-of-their-reserves-in-cryptocurrencies/

And on Youtube, Coin Bureau also talked about it a couple times IIRC.