3 ms·What about Primecoin?by 3rd3 13y agoWhat about Primecoin?lukifer 13y agoSee the discussion above. :) Prime number sequences are unlikely to be "useful" in the same sense as protein folding.gnaritas 13y agoAnother possibility.lukifer 13y agoProtein folding unfortunately isn't a good candidate, because verifying the work takes exactly as much effort as doing the work. http://en.wikipedia.org/wiki/Proof-of-work_system http://en.wikipedia.org/wiki/Proof-of-work_system