The difficulty of Bitcoin increased by a solid 11.26% with block 578,592, which is really an astonishing level compared to the increase in previous blocks. It directly relates to the increase in mining, which means the number of miners in the Bitcoin ecosystem is growing as well. Moreover, the difficulty of the network increases every 2016 blocks.
The hash rate of Bitcoin has also been on a steady rise since December 2018, when it stagnated at a very low level due to the dip in Bitcoin’s price. However, at the time of writing, the hash rate for Bitcoin reached ~58 TH/s, which is 2 TH/s away from reaching an all-time high.
Image courtesy of Bitcoin Magazine