Ripple/Bitcoin et al rely on proof of work/stake/etc systems. Ripple relies on consensus. They use differing methods to scale out over the traditional internet architecture, which is inherently insecure.
How would these technologies work running over a MaidSafe architecture? Would they need to undergo complete redesign to remove redundancy? Since MaidSafe already supplies the secure/p2p/scaling part.
— An ignorant non-techie