Just to let you know in the last week itself RBI has clarified it that btc will not be used in the banking system in India. So no banks will use btc in the banking channel going forward. Now only thing possible if country issue thier own currency an bank start to use that currency via block chain technology.
When the government preaches "Digital India", why not Cryptos ? is that because politicians can't make money with "no brain" for it? instead of hiding from the technology, what needed is a regulatory to suit Indian economy and developing proper channels to arrest Tax evasion.
Even if they ban Crypto's or Trading platform's in India, there is a plenty of open market to play with Crypto's around the world which will end up in so called "Black Money"