Solo Bitcoin mining in 2026: the odds of winning a block

Yes, you can mine Bitcoin on your own. It is legal in most countries, the software is free, and anyone with the right machine can join in. The hard part is winning. A single home rig now competes against industrial farms running millions of times more computing power, so the odds of earning a block reward alone are tiny. Some people still try. A few even win big.

Solo mining means pointing your hardware at the Bitcoin network by yourself and keeping the whole reward if you find a block. No pool, no shared payout. It is how Bitcoin was mined back in 2009, when a normal laptop was enough to compete. Those days are gone.

What solo mining actually is

Mining is a guessing race. For each block, machines around the world run trillions of calculations a second, hunting for a result that fits the network's current target. The first to find one adds the next block to the chain and takes the reward. The winning machine writes a special entry, called the coinbase, that sends the reward to an address of its choosing. That address is how a solo miner gets paid. The reward itself has two parts: a fixed subsidy, currently 3.125 BTC since the April 2024 halving, and the fees from the transactions packed into the block.

In a pool, thousands of miners combine their power, find blocks as a group, and split each reward in proportion to the work each one did. The payouts are frequent and small. Solo mining throws that safety net away. Win, and the whole block reward is yours, minus a small service fee. Lose, which is nearly always, and you get nothing. For the basics of the job itself, our guide to what Bitcoin miners actually do covers the ground.

Why almost everyone joined a pool

It was not always this crowded. In Bitcoin's first year, a hobbyist could mine blocks on a home computer's processor, because almost nobody else was competing. Then came graphics cards, then purpose-built ASIC chips, each wave far faster than the last. The first mining pools appeared around 2010, letting small miners band together so their rewards arrived in a steady trickle instead of a once-in-a-lifetime jackpot.

Bitcoin answers rising competition on its own. The network adjusts its difficulty every 2,016 blocks, about every two weeks, to keep a fresh block landing roughly every 10 minutes no matter how much power is aimed at it. More miners means higher difficulty, which means each individual's flat chance keeps falling. By the early 2010s, solo mining on one machine had become a bet you lose almost every time. Pools were the fix, and today they produce nearly every block.

A pool turns a rare, large payout into many small, predictable ones. For anyone who leans on mining for income, that steady trickle is worth giving up the dream of a whole block. Solo miners make the opposite choice. They keep the dream and accept the near-certain silence that comes with it.

How small your chances really are

Your odds come down to a single number: your slice of the network's total computing power. That slice is your chance of winning any given block. For a home miner, the slice is almost too small to picture.

By late 2025, the whole network was producing around 855 exahashes a second, according to CoinDesk. One exahash is a billion billion guesses, so the network was making about 855 of those every second. A single old-model machine might manage six terahashes a second, which sounds fast until you set it beside the network. That machine controls roughly 0.0000007 percent of the total. The big farms share a fresh block every 10 minutes between them. A lone hobby rig can expect to wait, on average, far longer than a human lifetime for one of its own.

That arithmetic is simple, which is part of what makes it so stark. A block is found about every 10 minutes, so roughly 144 go out each day. Multiply a home miner's slice by those 144 daily chances and the result is still a rounding error, close to zero but never quite reaching it.

People still win, and here is the proof

Long odds are not the same as no odds. On 21 November 2025, a solo miner found block 924,569 with a machine rated at just six terahashes a second. The block paid 3.146 BTC plus fees, close to $265,000 at the time. It carried 1,351 transactions and settled at 14:13 UTC, written to the chain for anyone to check.

Con Kolivas, the developer behind the Solo CKpool service the miner used, confirmed the win and put the machine's chance at about one in 180 million on any given day. It was the pool's 308th solo block, and its first in roughly three months. Wins like this land only a handful of times a year. They make headlines because they are freak events, not a repeatable plan.

A win is possible for a plain reason. Every guess carries the same tiny, independent chance, whoever makes it. A giant farm is not smarter than a home rig. It just buys far more tickets. A small miner who gets lucky in the right ten-minute window collects the same reward as anyone else. Luck, not skill, decides it.

What it costs to try

Chasing the whole reward in one hit is the draw. What it costs is everything you spend getting there. A modern ASIC miner is a power-hungry box, and electricity is the biggest running cost in mining anywhere on earth. Run one day and night and the bill climbs steadily, win or lose.

There is a quieter cost too. A rig left running needs cooling, a steady connection, and the odd restart, and it can sit there doing nothing for years. That is why most home miners treat it as a hobby or a gamble, not an income.

Some run a tiny low-power device, such as a Bitaxe, that costs little to keep on, and think of it as a lottery ticket they can afford. Others rent a short burst of hashpower, point it at a solo pool, and hope. Neither choice bends the odds. Whether the sums ever add up depends on your power price, the same thing that decides whether mining Bitcoin is profitable at all.

If you want to try it anyway

None of this means you cannot do it. If you understand the odds and still want in, the setup is simple enough. You need mining hardware, a Bitcoin address to receive any payout, and an account with a solo pool such as Solo CKpool, which lets a small miner chase a whole block while the pool handles the network plumbing.

Point your hardware at the pool, enter your own payout address, and let it run. Work out your electricity cost first. Spend only what you are content to lose, and treat any win as a shock rather than a plan. That one habit separates a cheap hobby from an expensive lesson.

Do not expect much feedback. A solo pool will show your machine submitting work around the clock, almost always with nothing to claim at the end of it. The reward, if it ever lands, arrives in a single moment with no warning. Most rigs run for years and that moment never comes. That is the deal you are taking.

What to keep in mind

A few honest cautions. Difficulty keeps rising, which drags a solo miner's odds lower over time, never higher. At block 924,569 the network difficulty stood above 152 trillion, a figure that has only ever trended up. Hardware ages fast too. Today's efficient machine is tomorrow's space heater.

Rewards will shrink as well. The block subsidy halves about every four years, so today's 3.125 BTC prize drops to 1.5625 BTC at the next halving, due around 2028. Fees might cover part of the gap. They might not.

There is one upside that has nothing to do with money. A handful of large pools produce most of Bitcoin's blocks, and every block an independent miner finds is one that did not come from them. It spreads block production a little wider. Solo mining is not a path to wealth. It is a long shot that a small number of people around the world enjoy taking, with their eyes wide open.