I MAY try to use an API for the group to look up the hashrate using something like Bitcoinium on the android based cell phones. I use this for my miners at this time. This is not a promise to use this as I have not thought how to verify the hashrate. Obviously, over time, the payouts should with variance in the mining approach the 175GH/s rate calculated with the current difficulty to determine bitcoins mined. Hope this helps answer your question somewhat. My main concern at this time is to finish the group buy in time to purchase the miner in the seven day time frame given by KNCMiner. Thanks for the questions.