One of the most important parameters of the network of bitcoin is the complexity of mining — fell by 15.95%. It is the second largest decline in history.
March 9 complexity has updated the historical maximum at the level 16,55 T, but after a few days of the market collapse has significantly affected the profitability of mining.
The drop in complexity suggests that some of the miners turned off the device. This is evidenced by Hasrat network. On 25 March, it fell to 75.7 per EH/s, but the time allocation was about 99.5 EH/s. Due to the sharp fall Hasrat blocks were extracted more than 10 minutes.
According to the mining pool Poolin, popular models Antminer S9 at a price of $0.06 per kilowatt-hour are on the verge of profitability, and bring from $0.10 to $0.28 in the day. The best performance of the model Whatsminer M20S/68.
The largest drop in complexity happened in October 2011, and the third on the scale in December 2018.
Note that Coinmetrics analysts predicted a decline of 20 March.