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Over the weekend, the Bitcoin network hash rate declining trend observed over the past month accelerated in a historic fashion. On Sunday, the average block time exceeded 23 minutes, the highest average block time in a single day in more than a decade, with the only other iterations of slow average daily block periods occurring before bitcoin had a market price, in 2009 .
However, it should be noted that looking at the one-day sample sizes of the hash rate and average block interval periods can be misleading, due to the probabilistic nature of bitcoin mining; Variation is expected.
Using the seven days late (moving average of 168 hours), the mean time between blocks was 19 minutes and 32 seconds, roughly twice the target period of 10 minutes.
It is now estimated that the difficulty of the next miner will be adjusted at -25.8% on July 2, which would be the largest bearish difficulty adjustment in the history of the Bitcoin network.