Business Facebook's Libra currency battered by defections, pushback Updated : October 13, 2019 12:38 PM IST Facebook CEO Mark Zuckerberg will appear before Congress later this month to talk about the company's plans for Libra. Cryptocurrencies such as Libra store all transactions on a widely distributed, encrypted ledger known as the blockchain. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.