> * Court judgements must be able to block, reverse or force transactions. This means either the government gets a copy of all private keys, or simply has maste

> * Court judgements must be able to block, reverse or force transactions. This means either the government gets a copy of all private keys, or simply has master keys for the system. You can certainly avoid that, just make it part of the protocol. You could create currency with such rules on top of Ethereum today. Court judgments simply become a part of trusted oracle.