CBDCs, Not Crypto, Will Be Cornerstone of Future Monetary System, BIS Says
coindesk.com
coindesk.com
You could choose to incorporate a blockchain in a CBDC implemnentation but why would you. Central banks have central in their name whereas a core value proposition of blockchain is decentralization. The Fed isn't going to wake up tomorrow and decide it wants to decentralize the dollar.
Banks, governments, and even Facebook continue to come up with "federated blockchains", boasting fast transaction times and private data, but butchered consensus mechanisms.
At the end of the day, they are using an expensive database that in some way or other defeats the point of using a blockchain.
It's not as if public-permissionless blockchains are all that decentralized, so the bar is pretty low on that measure.
It's already over, they just don't know it yet.