Thank You for that answer, this was really helpful. But if I'm right everyone races to find a hash < target, and the first one to find such a hash gets the reward. When everyone starts at 0 and with the same extranonce, the one with most calculation-power always is first, right? If I have less calculation-power than other ppl, wouldnt I want to try to "cheat" by not starting at 0 because other ppl would get the reward always? Did I miss something with this assumption?