A lone Bitcoin enthusiast has defied probability by solving block 903.883 with a rig delivering just 2.3 petahashes per second (PH/s). The achievement on Thursday, July 4. earned the miner 3.173 BTC in block subsidy and fees—worth roughly $349.028 at today’s Bitcoin price of about $109.000.
A Jackpot Block at Height 903.883
Blockchain explorer data from Mempool Space shows the winning hash landed in block 903.883. Because Bitcoin’s fourth halving last year reduced the base reward to 3.125 BTC, the balance—0.048 BTC—came from transaction fees bundled in the block.
David-Versus-Goliath Odds
According to CKpool’s administrator, a miner with 2.3 PH/s has roughly a one-in-2.800 chance of discovering any block on a given day—statistically just once every eight years. SoloChance estimates the odds at one in 375.300 per block under current network difficulty, underscoring why industry observers called the feat “incredible.”
What Kind of Hardware Hits 2.3 PH/s?
Cointelegraph notes that 2.3 PH/s could be delivered by clustering several older-generation ASICs rather than a modern, industrial-scale setup. Hobbyist devices such as the Bitaxe Gamma or FutureBit Apollo BTC operate in the terahash range, meaning the lucky miner likely ran a small farm of out-of-warranty workhorses rather than state-of-the-art Antminer S21 units.
Solo Strikes Are Becoming a Trend
This is the third headline-grabbing solo win of 2025. A Bitaxe-powered miner captured block 883.181 in February, while another solo hobbyist found block 899.826 in early June—both worth more than $300.000 at the time. Each incident highlights that, while hash rate improves odds, block discovery ultimately remains a game of statistical chance.
Industry Context: Big Miners Dial Back Output
The solo coup comes as large U.S. mining firms such as Riot Platforms, Cipher Mining and Marathon Digital curtailed production in June to dodge Texas summer peak-demand surcharges. Reduced industrial output has slightly lowered overall network hash-rate growth, but network difficulty remains near all-time highs, making the solo success even more remarkable.
Conclusion
With just a fraction of the network’s estimated 600 exahash-per-second firepower, Thursday’s 2.3 PH/s rig proved that luck can still trump scale in Bitcoin mining. While most hobbyists will never match this windfall, the event underscores Bitcoin’s open, probabilistic design—where even the smallest participant can, on a fortunate day, take home a full block reward.
