Proof-of-work, just like Bitcoin itself uses for hashing? No this idea isn't about proof of work. The idea is delaying the computation result, preventing a miner from picking a value. If the computation takes an hour on the fastest available computer and isn't parallelizable, then a miner can't influence

On Mon, Nov 11, 2013 at 8:14 PM, Natanael <natanael.l@gmail.com> wrote: the unpredictable value (unless they have 51%). With slightly weaker security requirements iterating only a few million times would be decent as well, since attempting to influence the value would result in a performance hit a competitive miner can't afford.