nChain is now shilling BSV blockchain to govs for implementing CDBCs.
https://www.globenewswire.com/news-release/2022/08/30/2506414/0/en/nChain-Explains-Path-to-Global-Adoption-of-Central-Bank-Digital-Currencies.html
PoW makes no sense for CBDCs. Those will all be proof-of-correctness. Super high bandwidth & throughput, decentralized, carbon-friendly. But neither trustless nor censorship-resistant.
Basically governments will run their own clone of something like Stellar/Ripple networks. They can track every txn and do KYC checks at every exchange.