キーワード Arbitum Nova%E7%A7%91%E5%AD%B8%E5%AE%B6DAO%E3%80%8E%F0%9F%8D%80%E7%B6%B2%E7%AB%99niu%C2%B7by%F0%9F%8D%80%E3%80%8F%E3%80%91%E7%BE%9A%E6%95%A3%E4%BA%BAob