Banks will show interest in cryptocurrency only when states legalize it and banks are given detailed instructions on how much and how exactly cryptocurrency can be used. At the same time, this will also be the case if banks see their material benefit and in a sufficient amount. So far, we can say that the attitude of banks to cryptocurrency is ambiguous, as are their governments.
At the same time, blockchain technology has long been appreciated by both banks and governments of almost all countries. The banking system, government agencies and entire sectors of the economy are actively using blockchain technology in their activities.