US, Japan, Denmark, Rusia, Korsel and Finlandia was legalize bitcoin. even DUBAI was apply blockchain at their daily activities like pay a taxi.
though blockchain can't be track, its private transaction. it make hacker easier to do crime like money laundry dll.
and then WHY MUST APPLY BLOCKCHAIN???
It is a new technology and people wants to try out new once and try to make the best out of it. We need to upgrade and every moment we are upgrading to the ways of the future.