This idea is generally absurd, since a decentralized cryptocurrency, by its very nature, cannot be controlled by anyone, especially banks and government agencies. The state can only provide general rules for the circulation of cryptocurrency in society, but not manage it.
I think that if the World Bank were offered to manage the cryptocurrency, then they would refuse it due to the impossibility of doing it from a practical point of view. The banking system operates on completely different principles than cryptocurrency. It is impossible to combine absolutely opposite approaches to finance into a single whole.