Just because a single entity boots up a blockchain doesn't make it centralized. Satoshi set the initial rules for Bitcoin - does that make it centralized?
If there are 196 countries in the world they could all be registered as valid entities using their respective public keys. New entities could be added is through a soft fork of mining/processing nodes that add public keys to the list, and thus would be distributed consensus like other blockchains.
If there are 196 countries in the world they could all be registered as valid entities using their respective public keys. New entities could be added is through a soft fork of mining/processing nodes that add public keys to the list, and thus would be distributed consensus like other blockchains.