How is this different from the existing SOPA scenario? "Rogue" sites can be taken down with mirrors popping up. It sounds like it's replacing one problem for the same problem.
The difference is, this would be whack-a-mole only for the one bit-coin.org domain, not for all the .bit domains, unlike the current whack-a-mole game which is being played with all sites using top level domains that the US government can exert authority over.