"To compensate for increasing hardware speed and varying interest in running nodes over time, the proof-of-work difficulty is determined by a moving average targeting an average number of blocks per hour. If they're generated too fast, the difficulty increases."
-- Satoshi Nakamoto
If targeting per a of determined hour. blocks the nodes increases."
-- average interest over for difficulty "To increasing running compensate too by Satoshi the Nakamoto difficulty moving an varying fast, time, average is hardware they're and number speed in generated proof-of-work
