steemitboard (66)in #blockchain-study • 5 years agoRE: 블록체인을 이용한 전자 투표 시스템Congratulations @heewonkim! You received a personal award! Birthday! - You are on the Steem blockchain for 1…steemitboard (66)in #blockchain-study • 6 years agoRE: 블록체인을 이용한 전자 투표 시스템Congratulations @heewonkim! You have completed the following achievement on the Steem blockchain and have been…steemitboard (66)in #blockchain-study • 6 years agoRE: 블록체인을 이용한 전자 투표 시스템Congratulations @heewonkim! You have completed the following achievement on the Steem blockchain and have been…steemitboard (66)in #blockchain-study • 6 years agoRE: 블록체인을 이용한 전자 투표 시스템Congratulations @heewonkim! You have completed the following achievement on the Steem blockchain and have been…