There is a market of secure microchips and it's evolving. Of course, there are no 100% secure solutions, but we're heading towards practical security. There are

There is a market of secure microchips and it's evolving. Of course, there are no 100% secure solutions, but we're heading towards practical security. There are no full-proof solutions for anything in life. Even Bitcoin is not full-proof. You just need to capture coordinators of a couple of mining pools. I believe collecting those in China will be enough to gain 51% control.