Bitcoin’s mining difficulty rose to 148.2 trillion in the final network adjustment of 2025, underscoring growing competition among miners. Average block times remain slightly below the 10-minute target, prompting the increase.
Projections suggest difficulty could rise further to nearly 149 trillion in early January 2026. Throughout 2025, difficulty reached multiple record highs, especially during the September price rally, forcing miners to deploy more capital and energy to remain competitive.
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