Forget the billion-dollar mining farms. The biggest story in Bitcoin mining right now is a guy with a machine that costs less than a night out in Manhattan. A solo miner—using a single Bitaxe, a $150 piece of open-source hardware—just solved a Bitcoin block and walked away with roughly $200,000 in block rewards and fees. That’s a return of over 1,300x on equipment alone. And it’s not an isolated fluke.
In the past 12 months, solo miners have found 24 blocks, a 41% increase year-over-year. The trend is undeniable: the little guy is crashing the party. But is this a genuine shift in mining economics or just a statistical anomaly? Let’s break down the numbers.
The $150 Lottery Ticket
The miner in question—who goes by the handle ‘BitaxeSolo’—was running a Bitaxe Ultra, a device that consumes about 12 watts of power. That’s less than a LED lightbulb. For comparison, the entire Bitcoin network’s hashrate is currently hovering around 600 exahashes per second (EH/s). This one machine contributes roughly 1 terahash per second (TH/s). That’s a one-in-600-billion chance per block. But Bitcoin’s block time is 10 minutes, so over a year, the odds of solving a block are about 1 in 5,000. And yet, someone hit. Twice, actually—this is the second solo miner to strike gold in 2025 alone.
“It’s the equivalent of winning the lottery while buying a single ticket,” says Dr. Elena Vargas, a blockchain economist at the University of Oxford. “But unlike a lottery, the expected value here is actually positive if you factor in the long-term appreciation of Bitcoin. Still, the variance is insane.”
Most miners join pools to smooth out their income. Solo mining is essentially a gamble. But the recent surge in solo blocks suggests that the number of small miners is growing, thanks to cheap, efficient hardware like the Bitaxe and the NerdMiner. These devices are widely available for under $200 and can be plugged into a home outlet. The barrier to entry has never been lower.
Solo Mining Surge: By the Numbers
Let’s dig into the data. According to Reuters, the number of solo blocks found in the last 12 months (24) is a 41% jump from the previous 12 months (17). That’s despite Bitcoin’s mining difficulty hitting all-time highs. The difficulty adjusts every 2,016 blocks to keep block times consistent, and it’s been climbing steadily as more hashpower joins the network. So why are solo miners finding more blocks?
Simple: more people are trying. The rise of open-source firmware and affordable ASICs has democratized access. A BBC report earlier this year highlighted how a hobbyist in Texas built a small miner for under $300 and is now running it 24/7. The community around solo mining has exploded on forums like Bitcointalk and Reddit. There’s even a website tracking solo blocks in real time.
But let’s be clear: 24 blocks out of roughly 52,500 blocks per year is still a rounding error. Pool mining dominates over 99.9% of the network. Yet the narrative matters. Every time a solo miner wins, it proves that Bitcoin’s design is still permissionless. You don’t need a warehouse full of S19s to participate. However, the flip side is that the vast majority of solo miners will never see a penny. The expected time to find a block with a Bitaxe is about 5,000 years.
“This is great for headlines, but it’s not a strategy,” says Marcus Chen, a mining analyst at HashrateIQ. “The net present value of a solo miner is negative for most people. You’re better off spending that $150 on Bitcoin directly.” Unless, of course, you get lucky—and someone just did.
Why This Matters for the Average Investor
Look, the crypto market is notoriously volatile. We’ve seen Bitcoin slip below $63K on Asian leverage flush and then recover. Meanwhile, the conversation around AI chips and Bitcoin mining is heating up, with some arguing that the next bull run will be driven by the convergence of AI and crypto mining hardware. But the solo mining story is different. It’s about the democratization of the network.
For the average investor, this means a few things. First, the mining landscape is becoming more fragmented. Large miners like Marathon Digital and Riot Platforms have to contend with a growing number of small players who are willing to mine at a loss for ideological reasons. “Solo miners aren’t just chasing profit; they’re supporting the network’s decentralization,” says Dr. Vargas. That could keep the network more resilient to attacks.
Second, it highlights the underlying economics of Bitcoin. The block reward is currently 3.125 BTC, but with transaction fees, this solo miner pulled in about 3.5 BTC. At current prices around $60,000, that’s $210,000. The cost of electricity for a year? Maybe $100. So the margin, if you win, is absurd. But the probability is microscopic.
Third, this story feeds into the broader narrative of financial inclusion. You don’t need a bank account to mine Bitcoin. You don’t need a passport. You just need electricity and a cheap device. That’s powerful in a world where crypto trading in 2025 is increasingly dominated by leverage and institutions.
The Odds and the Takeaway
Let’s talk odds. The Bitcoin network’s difficulty is currently 100 trillion, meaning it takes on average 100 trillion hashes to find a block. A Bitaxe does 1 TH/s, so 1 trillion hashes per second. That means on average, it would take 100,000 seconds (about 27.8 hours) to find a block if the miner had 100 TH/s. But with 1 TH/s, it’s 100 times longer: 2,780 hours, or 115 days. But that’s if you’re hashing at the network’s expected rate. In reality, the variance is huge. You could go 10 years without finding anything, or you could find two blocks in a week—as some solo miners have.
So, is it worth it? Probably not. But for the person who just made $200,000, it was the best investment they ever made. And the surge in solo blocks suggests that more people are willing to take that bet. The hardware is cheap, the electricity is negligible, and the dream of hitting the jackpot is alive and well.
Looking ahead, if the price of Bitcoin continues to rise, we could see even more solo miners joining the network. That would increase the hashrate, making it harder for any single miner to find a block. But it also increases the total block rewards available. The net effect is a net positive for decentralization. But don’t quit your day job.
Frequently Asked Questions
How does solo Bitcoin mining work?
Solo mining is when an individual miner attempts to solve a Bitcoin block without joining a mining pool. The miner runs their own node and connects their hardware to the network. If they find a valid block, they receive the entire block reward (currently 3.125 BTC plus transaction fees). Otherwise, they get nothing. The probability of success depends on their hashrate relative to the total network hashrate.
What are the odds of a solo miner winning?
With a device like the Bitaxe (1 TH/s) and the network hashrate at ~600 EH/s, the odds of finding a block in any given hour are about 1 in 600,000. Over a full year of continuous mining, the chance is roughly 1 in 5,000. That’s significantly better than winning the Powerball lottery, but still very low. However, the expected value can be positive if you consider long-term Bitcoin price appreciation.
Is solo mining profitable for most people?
No. For the vast majority of miners, the expected time to find a block is measured in years or decades. The electricity cost alone is likely to exceed the expected value of the block reward. Most experts recommend either buying Bitcoin directly or joining a mining pool for consistent, albeit smaller, payouts. Solo mining is best viewed as a hobby with a lottery-like payout, not a reliable income source.
