Blockchain is unnecessary complicated, for example, it has mining, rewards for those who add new records, even VM and scripts and all of these are not needed for a government registry. I do not need scripts within a land registry.
depends on configuration, you can make any traditional web service replicated (replication is one and only thing that protects data in decentralized ledger, same as DNA is stored in every cell) using something like CometBFT on top. Mining/PoS or VM - all optional.