Very good article because Russia and China just renewed their currency swaps agreement for another three years. To avoid trading in the petro-dollar.
https://www.rt.com/business/408305-russia-china-currency-swap/
As for crytocurrencies, investors are buying into it has a hedge and long term investment. However I feel it went up too quickly so that indicates loss of faith in the fiat currencies and commodities.
I think there will be a pull back after the spit, but then more uptrend