The computing of tomorrow will give us security. Secure computing is not personal, it is an abstraction built upon traditional computers that continue to provide the raw horsepower. Secure computers are virtual machines, composed of thousands of interconnected nodes that all agree on a security policy, and economic incentives to enforce it, a.k.a. blockchains. Tomorrow, secure computing will be enabled by millions of blockchains, and trillions of tokens. There are large, complex, and largely unsolved computer science and engineering challenges ahead of us that will keep us busy for decades.