Select what genuinely interests you. Your picks feed directly into our editorial planning. Here is what is documented: the mining difficulty on the Bitcoin network will rise by 6.44 percent at the next adjustment on October 29, after it had already climbed 5.92 percent on October 16. Our assessment follows further below. The two jumps explain why the price has not fallen below $81,400 since October 18, and they do not explain where it runs next. For that, the options expiry on October 30 is the more important date.