In a statement issued by the ministry on Dec. 29 2017 the finance agency reiterated that there is a real and heightened risk of an investment bubble in the cryptocurrency market that is similar to Ponzi schemes. via ICGO https://www.icgo.co.uk/redirect/?url=https://cointelegraph.com/news/indias-ministry-of-finance-compares-bitcoin-and-cryptocurrencies-to-ponzi-schemes