Bitcoin's network hashrate has surged to a new all-time high, with the seven-day simple moving average (SMA) peaking at 943 exahash per second (EH/s) on May 31, 2025. This milestone comes just 22 days after the previous record of 929 EH/s, marking a 14 EH/s increase in computational power. The network now stands only 57 EH/s away from breaching the 1 zettahash per second (ZH/s) threshold, a scale that would represent a quintillion hashes every second.
Accelerating Growth Trajectory
The pace of hashrate expansion has quickened notably. While climbing from 800 EH/s to 900 EH/s took nearly a year, the jump from 900 EH/s to 943 EH/s occurred in less than six months. Although the rate dipped slightly to around 934 EH/s by June 1, it remains at an extraordinary level. This relentless increase highlights the growing commitment of miners worldwide, who continue to deploy more advanced ASIC hardware despite tightening margins.
Comparing Bitcoin to Supercomputers: Apples to Oranges
Some analysts argue that Bitcoin now constitutes the most powerful computational system on Earth, but direct comparisons with supercomputers are inherently flawed. Bitcoin's proof-of-work relies on integer-based hash operations, while supercomputers are measured in floating-point operations per second (FLOPS). Earlier estimates suggested that Bitcoin's network might execute significantly more operations per second than the world's leading supercomputer, El Capitan (1.742 exaflops), but the different nature of these tasks makes any parallel imperfect—akin to comparing poetry with mathematics. What remains indisputable is that Bitcoin's hashing power is globally distributed and operates 24/7 without interruption, a resilience that no single supercomputer can match.
Mining Revenue Declines, Yet Confidence Persists
Alongside the hashrate surge, miner revenue per unit of computing power has fallen. Since May 29, the estimated daily earnings for 1 petahash per second (PH/s) of hashing capacity decreased from $56.99 to $52.47, a drop of 7.93%. This decline reflects the combined effects of intensified competition and the fixed block subsidy, which was halved in the fourth halving event in April 2024. Despite thinner margins, miners continue to add hashrate, indicating a strong belief in both future bitcoin price appreciation and ongoing efficiency gains. The article notes that miners remain dependent on higher bitcoin prices to restore the earnings levels seen before the halving, but technological improvements in ASIC efficiency and operational optimization provide a buffer.
The Road to Zettahash: What It Means
Crossing the 1 ZH/s mark would be a historic milestone for Bitcoin, making it the first decentralized network to achieve such a scale of computational output. It underscores the massive investment in mining infrastructure and the network's robust security model. While energy consumption and hardware costs remain debated topics, the steady climb in hashrate signals that miners—and by extension the broader bitcoin community—are betting heavily on the network's long-term value. As efficiency improves and new-generation machines come online, the zettahash frontier may be breached within the coming months, further cementing Bitcoin's position as the world's most secure proof-of-work blockchain.