currency is just legal official medium of exchange in the respective country currencies doesn't have all the properties on money anymore #tipstr
bitcoin / crypto are NEVER going to be official currency anywhere just like painting house antic can serve as store-of-value does not make it or them a currency. making something a legal tender is not necessary a currency legally by law legal tender or currency cannot be taxed just for changing hands only unless any physical/virtual goods/services in involved in the transaction.