as per now many country using bitcoin for buy and sell any marketing items as per my knowledge the bitcoin is using for buying gold and silver also i think i will be number one worlds trading purpose use the bitcoins
I have never seen any country use bitcoin to buy gold or silver. I need the exact news. But now there are many big companies like Nissan, Ford and BMW that accept Bitcoin payments. That is a great sign, they want to join hands with us to build a better Crypto market.