Diem (formerly known as Libra) was a permissioned blockchain-based stablecoin payment system proposed by the American social media company Meta Platforms. The plan also includes a private currency implemented as a cryptocurrency. The launch was originally planned to be in 2020, but only rudimentary experimental code has been released until the project was acquired in January 2022. The project, currency and transactions would have been managed and cryptographically entrusted to the Diem Association, a membership organization of companies from payment, technology, telecommunication, online marketplace and venture capital, and nonprofits. Before December 2020, the project was called "Libra", although this was changed to Diem following legal challenges regarding its name and logo. In general, the project generated backlash from government regulators in the European Union, the USA, other countries, and among the general public over monetary sovereignty, financial stability, privacy, and antitrust concerns which ultimately helped kill the project. History Morgan Beller started working on cryptocurrency and blockchain at Meta in 2017, and was initially the only person working on Meta's blockchain initiative. Meta vice president David A. Marcus moved from Facebook Messenger to a new blockchain division in May 2018. First reports of Facebook planning a cryptocurrency, with Marcus in charge, emerged a few days later. By February 2019, there were more than 50 engineers working on the project. Confirmation that Facebook intended a cryptocurrency first emerged in May 2019. At this time it was known as "GlobalCoin" or "Facebook Coin". The project was formally announced on June 18, 2019, under the name Libra. The creators of the coin are listed as Morgan Beller, David Marcus and Kevin Weil (Novi's VP of Product). The first release was planned for 2020. On July 15, 2019, Facebook announced the currency will not launch until all regulatory concerns have been met and Libra has the "appropriate approvals". On September 18, 2019, during a meeting with top Senate Democratic leaders, Mark Zuckerberg said that Libra would not be launched anywhere in the world without first obtaining approval from United States regulators. In October 2019 multiple companies left Libra Association: PayPal left on 4 October, eBay, Mastercard, Stripe, Visa and Mercado Pago followed on 11 October, and Booking Holdings on 14 October. According to a November 2020 report in the Financial Times, Libra will be launching a slimmed down plan that includes the cryptocurrency being a stablecoin backed by the US dollar rather than a