Markus Brunnermeier, one of Germany's most decorated economists and a professor at Princeton, referred to the cooperation between commercial banks and central banks as the most pronounced form of public-private partnership that we have in our economies.5 I can only agree with that. Preserving this model of public-private partnership will be key to the success of a digital euro.
What could this public-private cooperation look like in practice? One option the Eurosystem is considering is known as the payment scheme approach: The  3/6  BIS - Central bankers' speeches  Eurosystem, as a public actor, would develop, in cooperation with the private sector, a common rule-based framework.