After months of rumors and speculation, Facebook is finally making its cryptocurrency efforts official. This is Calibra, a digital wallet that will use a new cryptocurrency called Libra. Calibra, which is now a subsidiary of Facebook, is designed to "provide financial services that will enable people to access and participate in the Libra network," a blockchain technology developed by Facebook that's getting support from MasterCard, Visa, PayPal, eBay, Uber, Lyft and Spotify, among others. Facebook says it plans to launch Calibra in 2020, and the service will be available in Messenger and WhatsApp, as well as in a standalone app.