??? ???? of ??? ??? is a ????? ???? and complex ????. ????^s are the ???? of this ???? ???. Users can ????? with each ?????? ?????? through ?????????? ?????? which ?????? transactions and ?????? ? ?????? ??. The??????: to ?????? various ?????} is ????? ????. ?? finance to ????? ???????, cryptography is shaping the {future oftechnology|. ?