how is it possible for the crypto currency to replace fiat or national currency, while the ktipto currency has no regulations and rules for the government. fiat currency is accepted by the state because it can be seen, and has a definite regulation, its value is also unchanged .. unlike with bitcoin and altcoin which have high price fluctuation value.
This is due to the fact that the crypto currency has appeared relatively recently. For sure there will be countries that will accept this. Only time is required.