Bitcoin mining complexity breaks 2025 record

At the end of 2025, the complexity of bitcoin mining BTC $88,433.12 Mezo Wrapped BTC -0.10% Market capitalization $46.35 million VOL. 24 hours $1.71 billion reached a new historical high of 148.2 trillion. This indicates an increase in network security, but also puts additional pressure on miners. According to forecasts, the next adjustment in early January 2026 could see the figure rise to 149 trillion.

The change in complexity is due to the fact that the average block creation time has fallen below the target of 10 minutes. The protocol automatically complicates the process to stabilize the rate of new coin issuance, a key mechanism that ensures the predictability of the network regardless of the number of miners.

Throughout 2025, the complexity has repeatedly broken records, especially during the September price spike. Even after the market correction, the hashrate continued to grow, indicating a high level of investment in mining and system security.

For miners, increased complexity means tougher competition: more powerful equipment and higher energy costs are required. This reduces the profitability of small operators and contributes to the centralization of the industry, where the share of large players is growing.

Despite the financial pressure, the automatic difficulty adjustment mechanism strengthens the network by preventing the risk of manipulation or double spending of coins. It guarantees the stability of bitcoin issuance and the preservation of its decentralized structure in the long term.