Mastercard has launched a testing platform for central bank digital currencies (CBDC). The platform lets Mastercard and its partners issue, distribute, and exchange simulated digital currencies between consumers, corporations, banks, and financial service providers. It also lets users test the interaction of CBDC with existing credit/debit card and real-time payment rails. The Bank for International Settlements (BIS) says 40% of all central banks are experimenting with digital currency which, in time, will be another form of fiat currency. This month, the BIS co-issued a report with the Ban...