Coinswitch Kuber, an India-based startup that lets users invest in cryptocurrencies, raised $25M in a new financing round, giving the three-year-old firm a valuation of over $500M, TechCrunch reports.Tiger Global financed the entire Series B funding round, which comes just three months after Coinswitch Kuber's $15M Series A round from Ribbit Capital, Sequoia Capital India, and Kunal Shah.The startup is seeking to expand in India, the world's second-largest internet market, as the future of private crypto remains in doubt as the the Indian government may propose a ban on mining, trading and holding cryptocurrency.