Bitcoin’s network has achieved a landmark milestone, sustaining 1 zettahash per second (ZH/s) on a seven-day moving average for the first time, according to data from Glassnode.
The hashrate, a measure of computing power dedicated to mining, has briefly touched this level earlier in the year but never held it consistently. Using the seven-day average smooths out natural block-time fluctuations, giving a clearer view of underlying growth.
To put the scale in perspective: 1 ZH/s equals 1,000 exahashes per second. Bitcoin first surpassed 1 EH/s in 2016. Since January 2025, network power has expanded from around 800 EH/s to today’s record level.
This surge in mining activity is expected to trigger a difficulty adjustment of more than 7% in the coming days—likely the second-largest upward move this year. Difficulty changes, which occur roughly every two weeks, ensure blocks continue to be mined around every 10 minutes regardless of total network power. Once adjusted, difficulty is projected to rise to 138.96 trillion.
The milestone underscores accelerating investment in mining infrastructure and reinforces the network’s long-term security, even as price volatility continues to test market sentiment.
