steemitboard (66)in #blockchain • 6 years agoRE: 블록체인을 기반으로하는 스마트 시티에서의 이상적 도시공동체 구상Congratulations @memex! You received a personal award! Birthday! - You are on the Steem blockchain for 1 year! You can view your badges on your Steem Board and compare…