Estonia's national ID system is decentralized via the X-Road system, no one entity can see all your records in one place. For example health records live in one

Estonia's national ID system is decentralized via the X-Road system, no one entity can see all your records in one place. For example health records live in one database, police in another etc. It is also difficult to cross correlate or to erase history due to Estonia also using a blockchain.