Nope, gold is well established as a currency and more importantly is the financial strength of a country depends on its gold reserves. I am never heard of a country whose financial resources depend on cryptocurrency reserves.
I admit that some cryptocurrencies now have a higher market value than gold, but i don't think this proves anything. The price of cryptocurrencies has changed too much, and their recognition is far less than gold's in people's minds.

It almost broke my brain to read your comment. Countries rely on their gold reserves, interesting. And gold is used as a currency, also interesting. If you have any book recommendations for me, I would be more than happy to receive them as quickly as possible. It is always good to broaden your own horizon and I must admit I have never heard about the stuff you are talking about.