How flexible is the Counterparty Protocol in terms of it being run atop other alt-coins instead of just Bitcoin?
Has anyone got any opinions about which alt-coin might be the optimal base for Counterparty?
Most alt-coins are nearly identical to Bitcoin, and Counterparty will run fine on any one that is. It would need a little tweaking for something like Namecoin or Peercoin, but not much, I think.