put in a wallet; almost none of the functionality outlined in the white paper was implemented, including "major architectural features that have yet to be invented." Ou was surprised that Facebook "would release software in such a state". Digital wallet In June 2019, Facebook announced plans to release a digital wallet called Calibra in 2020, as a standalone app and also to integrate it within Messenger and WhatsApp. In May 2020, Calibra was renamed Novi. As of February 2021, Novi and Diem were not released yet and do not have a set release date. Move Move is the Diem blockchain's proposed smart contract and custom transactions language. It is planned to be a statically-typed programming language, compiled to bytecode. The Move language syntax has not been released yet. An example Intermediate representation of the language is shown in the Move white paper: public main(payee: address, amount: u64) { let coin: 0x0.Currency.Coin = 0x0.Currency.withdraw_from_sender(copy(amount)); 0x0.Currency.deposit(copy(payee), move(coin)); } See also Beenz – an earlier attempt at an Internet-wide digital currency Facebook Credits Flooz – an earlier attempt at an Internet-wide digital currency Bitcoin – cryptocurrency in use today and that has largest market capitalization List of online payment service providers References External links Cancelled projects Cryptocurrency projects Meta Platforms Free software programmed in Rust