Does a difficulty of 67.96T mean that each hash has a 1 in 67.96T chances of being a solution, or that it takes on average, 67.96T hashes to find a solution?
The latter
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Thank you. If I may, one more question. So, would this mean a 1 in 135.92T (2x67.96) chance of earning a block reward per hash? I've wondered this before when trying to compare running some small solo miner to playing some lottery.
Good luck!