Maintaining privacy on the blockchain

Besides security, you need to think about participants' privacy on the blockchain. Privacy is much more nuanced, and it can lead to uncomfortable questions. What needs to be kept private? Why? And from whom?

Nowadays, in many countries around the world, people trust their governments and other social institutions. The idea of government censorship in such countries seems improbable. Not everyone, however, has this luxury. In all cases, you need a system that is resistant to censorship from any source; one that deters the unwanted prying eyes of snooping individuals and the theft of your identity. When designing your blockchain application, you definitely need to think about this and whether you should run it on a public blockchain or not. For example, electronic medical records can't be shared or modified on a public blockchain without...