<prompt> Mkoba wa cryptocurrency ni nini?  <response>: Pochi ya cryptocurrency ni pochi ya kidijitali ambapo funguo za kibinafsi huhifadhiwa ili kufikia sarafu ya kidijitali kama vile Bitcoin. Inatumika kuhifadhi, kutuma na kupokea sarafu za kidijitali na kufuatilia salio lao. Mkoba pia hutumika kama hatua ya usalama, kwani inahitaji idhini kila wakati shughuli inafanywa. 