[dragonwriter]

> What would 'banning bitcoin' even mean? All that is required is the computation of a number and its transmission to the blockchain. It's impossible to block such a message without blocking all other communications.

Government prohibition of an act rarely involves blocking all instances of the act (in fact, if the government could effectively make an act impossible, it wouldn't need to prohibit it.)

So the question here just seems to miss the entire idea of legal prohibitions.