According to The Block, social media giant Facebook's newly announced cryptocurrency subsidiary Calibra has been registered with the US Financial Crimes Enforcement Network (FinCEN). Calibra will provide a digital wallet for Libra cryptocurrency and will be registered as a Money Services Business (MSB) at FinCEN in February this year at Menlo Park, California. Calibra was registered as a money service company (MSB) at FinCEN in February. Calibra's MSB registration number is 31000141265767. Calibra may also need to obtain a state currency transfer license in each state in which it operates, depending on the license requirements of the particular state and Calibra's activities in the state.