When the difficulty changes how is it set?
There can't be some kind of signal dispersed around the network, saying "difficulty change ... ...NOW!", can there?
There can't be some kind of signal dispersed around the network, saying "difficulty change ... ...NOW!", can there?
It retargets every 2 weeks or so for bitcoin. Depending on the hashrate during the change, it will stick to it and after another 2 weeks change again depending on how many are mining then.
Sorry to hijack the thread, OP may give out a more detailed explanation if he wants to.