Bitcoin transfers even between countries on average the administrative costs are very cheap. Obviously more profitable than banking transactions, the administrative costs of which are still expensive.
I hope that all banks can see opportunities for Bitcoin to be utilized. Although I acknowledge the central bank's concern if Bitcoin transactions are used for prohibited matters.
One step that can be done by the Bank is to allow Bitcoin transactions on condition that they have to be registered on a special platform. Later the patform must be accompanied by a central bank permit.
This means that all bitcoin transactions must be recorded by regulators, now there are many illegal bitcoin transactions without permission and without supervision from regulators.
There is one country that can use it, for example in Japan that allows transactions with Bitcoin, even for payments in retail stores.
The government in Japan actually allows retail stores to accept payments via bitcoin. There are 4,000 stores that accept bitcoin payments. So far there are no problems. Even the Japanese government is making its own cryptocurrency.
The most huge and the most potentiating crypto currency of the present time is bitcoin, as bitcoin is always able to prove its worth by helping millions of people around the world and earning them a very good life and is superior from not only crypto currencies but all the kind of investment and moreover from the present currency system also and therefore bitcoin is even considered better way of transactions than these bank system and if everything will go well then bitcoin will obviously replace the present currency system.