I have read a news in 2019 about a tiny pacific island nation to issue its own cryptocurrency. Its called the Republic of the Marshall Islands and the token would be called Marshallese sovereign (SOV for short). The whitepaper isn't available yet, but this is one of those that I am looking forward to, especially John McAfee is running for President in November.
Oh.. please let's ignore that loser John McAfee. He has done enough damage to the cryptocurrency market by promoting scam projects. And I heard that a few days back he labelled Bitcoin as a "shitcoin" and advised his twitter followers to invest in altcoins rather than Bitcoin.
Anyway, coming back to the topic, I am not very excited with these government backed cryptocurrencies. I am afraid that they will be just the digital version of the fiat currency. And by the way, I wouldn't even regard Marshall Islands as a sovereign nation. It is a small group of coral islands (with a population of 50,000 or so) and ruled by the United States military.