New Delhi, June 24 -- The media has been all agog over the last few weeks with news that Facebook Inc. is launching a crypto-currency of its own called "Libra" backed by blockchain technology. Unlike the blockchain-based Bitcoin, which is a roller-coaster, Libra will be backed by a basket of fiat currencies. It is to be supported by a consortium of large-scale corporate houses, e-commerce players, financial services firms and venture capitalists. Companies such as Visa Inc., Mastercard Inc., Uber Technologies Inc. and PayPal Holdings Inc. have all signed up....