ដើមហេតុដែលកើតបច្ចេកវិទ្យាប្លុកឆេន The birth of Blockchain Technology

https://www.youtube.com/watch?v=Y_D6pS5sCW8&list=PL7y3ffgPbIE7t4_kxC0kL_gw_jdTJnA5l&index=2