Estonia was planning (and announced) something along these lines .. but the EU basically told them no. https://www.bloomberg.com/news/articles/2018-06-01/eston

Estonia was planning (and announced) something along these lines .. but the EU basically told them no. https://www.bloomberg.com/news/articles/2018-06-01/estonia-curbs-cryptocurrency-plan-that-drew-rebuke-from-draghi https://www.bloomberg.com/news/articles/2018-06-01/estonia-c...