[verdverm]

> The core feature that sets a modern blockchain ...

blockchain means many paradigms and implementations, just like databases have many paradigms and implementations, or democracy for that matter

What you are referring to is the "public, permissionless" blockchain variant. There are permissioned blockchains as well, like Hyperledger Fabric, that would form a very efficient system for use in government. The key factors I see here are

- the immutable ledger

- public transparency & audibility

- standardize transaction contracts

- efficiency of transfers between depts or gov't & citizen