
It is important to recognize that the network hash rate cannot be directly observed; rather, it needs to be calculated from the average block production time and the difficulty level. Based on the average block time analysis, the Bitcoin network has experienced a significant decline post-halving with a 560-second average block time for the last 1,000 blocks before the halving and dropped to 689 seconds per 1,000 blocks after the halving — roughly a 20% increase in the average block time, indicating a 20% network hash rate that gradually vanished during the period.
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