Governments looking to use blockchains for IDs + voting should consider starting with petitions. It's a safer use case because petitions are non-binding so security risks are much smaller, but you can still take advantage of blockchains for verifiability and ZKPs for privacy.
If cryptocurrencies are to be widely used, it will be the habits of the masses, not the wishes of Bitcoin’s early adopters, that determine what becomes of Satoshi Nakamoto’s vision https://t.co/aEt7pEzblo