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Bitcoin's Mining Difficulty Reaches Historic High

Recent data shows that Bitcoin's mining difficulty has increased for the 11th time this year, rising by 1.42% on Friday evening. This adjustment makes it more challenging to obtain block rewards. Despite experiencing five decreases earlier, Bitcoin's mining difficulty has still risen by 17.73% in 2025.

The latest increase pushed the difficulty to 129.44 trillion — the highest mark in the network’s history.

The 129.44 trillion figure represents the average number of hashes miners must compute to successfully discover a new block. Bitcoin's mining difficulty adjusts approximately every two weeks (every 2,016 blocks) to maintain a 10-minute target for block discovery, regardless of the network's computational power.

With the hashrate reaching record highs, blocks have been found more quickly than usual, leading to the recent difficulty increase. If block discovery slows below the 10-minute average, the system reduces the difficulty. So far in 2025, there have been 16 difficulty changes, starting with a modest 0.61% uptick on January 12.

Of those, 11 were increases, adding up to a 34.27% climb, while the five decreases trimmed 16.54% from the total.

After hitting a record 976 exahash per second (EH/s) on August 8, the hashrate has eased to 965.97 EH/s. While it's still early to predict the exact outcome for the next retarget on August 29, 2025, current data suggests a possible 1.77% reduction in difficulty.

Bitcoin’s mining difficulty continues to push into record territory in 2025, driven by unprecedented hashrate levels and frequent upward adjustments.