Solo Bitcoin Mining: Odds, Hardware and Reality
Solo Bitcoin mining explained: how it differs from pool mining, the real odds of finding a block at today’s hashrate, and why it is a lottery, not an income.
Solo Bitcoin mining means mining on your own, without a pool: if your hardware finds a valid block, you keep the entire block reward, and if it does not, you earn nothing. Your chance of finding any given block is equal to your share of the total network hashrate.
How solo mining differs from pool mining
In a mining pool, thousands of miners combine hashrate and split the rewards, so each one earns small, regular amounts. A solo miner works alone on its own block template. There are no shares and no partial payouts: the outcome of every block is all or nothing.
In practice, many home solo miners do not run their own template infrastructure. Instead they point their hardware at a "solo pool" service, which pays the whole reward to whichever miner finds the block, minus a small fee. Running your own full node and building your own templates is the purest form of solo mining.
The odds, with real numbers
Each block is an independent draw. Your probability of winning any single block is:
your hashrate ÷ network hashrate
At the time of writing (October 2026), the network runs at about 1 ZH/s — 1,000,000,000 TH/s — and roughly 144 blocks are found per day. That gives these approximate figures:
- A small hobby device at about 1 TH/s: around 1 in 1,000,000,000 per block, or an expected wait of roughly 19,000 years.
- A modern industrial ASIC at about 200 TH/s: around 1 in 5,000,000 per block, or an expected wait of roughly 95 years.
- A 1 EH/s operation (thousands of machines): around 1 in 1,000 per block, which works out to about one block a week on average.
"Expected wait" is an average, not a schedule. Because block discovery is memoryless — the same maths behind block times — a solo miner could win tomorrow or never. And if your hashrate stays the same while network difficulty rises, your odds shrink over time.
Why people still do it
Pure economics usually favour pools: the expected reward is roughly the same, but a pool smooths it out. People mine solo for other reasons:
- Decentralisation. Every independent miner that chooses its own transactions reduces reliance on large pool operators.
- Learning. Running a node and a miner is a hands-on way to understand how Bitcoin actually works.
- The lottery. Small solo miners do occasionally find blocks, and each success gets attention precisely because it is so rare.
Anyone considering it should treat solo mining as a hobby with real costs — hardware, electricity, noise and heat — rather than a source of income. Electricity has to be paid every day whether or not a block is found, so the realistic outcome for most small solo miners is a steady cost and no reward at all.
Frequently asked questions
What does a solo miner receive for a block?
The full block reward: the subsidy, currently 3.125 BTC, plus all the fees in the block. The newly created coins can only be spent after another 100 blocks have been mined.
Can I solo mine with a CPU or GPU?
Technically yes, but their hashrate is so far below that of specialised ASICs that the odds are effectively zero.
How does FreeBTC's "The Real Block" work?
FreeBTC runs a real solo miner pointed at the Bitcoin network, and players earn tickets for it by playing. The solo mining page shows the miner's live status. The same odds described above apply: it is a genuine long shot, not a guaranteed prize.
Solo mining is Bitcoin's block lottery in its purest form, and FreeBTC lets you take part in that lottery every ten minutes without buying hardware. Predict the next block, take on the AIs in Humans vs Machines and collect tickets for The Real Block — start playing.