Estonia has blockchain based online voting (Score 1)

Estonia as a country has used this technology for years for local and government elections. This is combined with government issued ID-cards that are used for authentication. ID-card information is not stored in the blockchain just the votes. Every person can later double check if there vote was tampered or not. Until not here are no known successful hack attempts. You can vote over special app, what is available for Windows, Linux, Mac and also for iOS and Android. More information about how it is organized on the official page: https://www.valimised.ee/en