You are viewing a single comment's thread from:RE: [2019/04/12] KR 커뮤니티 출석부View the full contextstyner (61)in #kr • 6 years ago 출석합니다. 블록체인학회 내용입니다.https://steemit.com/kr/@styner/blockchain-seminar-2019-20190524-1554973098246