If Bitcoins were introduced in banks, there'd be probably a different protocol made by banks if I'm correct? What would it be like?
Banks, in any case, will use Bitcoins and other types of cryptocurrency in their operations. At least for the provision of services for the exchange of cryptocurrencies for conventional currency. Any use of cryptocurrency by banks will not change its nature. Therefore, in this regard, we should not be afraid. For their internal activities, banks will use a centralized cryptocurrency such as ripple.