Bitcoin mining also pays lower than it used to, rendering it even more challenging to recoup the mounting computational and electrical expenditures.on-line payments being sent directly from 1 get together to another with no under-going a money establishment.??X?p h?ng m?c ???ph??bi?n d?a trên v?n hóa th??tr??ng t??ng ??i c?a tài s?n. a block is