See, with NH; they are trying to solve a block with your transaction; so a different hash all together. Theres no way for a renter to withhold blocks like that... you can see the live submissions/hashrate coming through the solo pool. I don't see that being faked at all.... unless the hash renter feeds garbage data to the pool (I would assume the pool would invalidate bad work?)
This is 100% incorrect. A miner can easily submit all found shares except shares that are greater than the network diff.
My one recommendation to people going for rented hash:
Its smarter and more statistically probable if you rent as much hash as possible and run it at once.
More workers working on the same block == greater chance of solving _your_ block in a given amount of time.
If you just space out the hash in smaller amounts over time; you have less hash to find that block in a given time and it is somewhat wasteful.
In the same sense that pointing two antminers at two different BTC payout addresses, will both have the same probability of finding a block; whereas if they are both mining to the same address, they stand twice the chance as find a block as when they are working independent.
I hope people grasp this idea.....
The more hash you cram in that "10 min" gives you a higher actual probability of finding a block.
This is also wrong. See ck posts above. The only time working faster matters is to beat a difficulty change. There is the same probability in finding a valid block with 1000TH for 1 hour as there is with 100TH for 10 hours.