Rajya Sabha Member from BJP and former Deputy Chief Minister of Bihar Sushil Kumar Modi, on March 28, asked the government to increase tax on cryptocurrencies from the current rate of 30 per cent, saying they are a form of gambling, and countries like Japan, Germany, France and Austria have imposed as much as 40-50 per cent tax on it. In an exclusive interview with Outlook Money, he shares his views on cryptocurrencies and blockchain. Edited excerpts: