Solo Bitcoin Mining Odds: Only 23 Blocks in a Year

Solo Bitcoin mining odds are far lower than most people realize. Bitcoin adds a new block about every 10 minutes, which works out to roughly 52,560 blocks a year, but only 23 were identified as solo-mined in the trailing 12 months ending March 9, 2026, making solo wins one of the rarest outcomes in crypto.

That headline number matters because it gives newcomers a simple way to understand how unusual solo mining really is. Most Bitcoin blocks are found by mining pools, which are groups of miners who combine computing power and share rewards instead of trying to beat the network alone.

How rare is solo Bitcoin mining?

Bitcoin.org says a new block is appended through mining roughly every 10 minutes on average. In plain English, that means the network usually creates about six blocks an hour, 144 blocks a day, and about 52,560 blocks in a full year.

Against that total, Bennet’s solo block tracker identified 23 solo-mined Bitcoin blocks over the last 12 months as of March 9, 2026. That supports the broader claim that only about 20 to 25 blocks a year are found by solo miners, at least among publicly identifiable cases.

The scale is easier to grasp when the numbers sit side by side. A few dozen identified solo blocks against more than 52,000 annual blocks means solo miners account for only a tiny fraction of Bitcoin’s total block production.

What do the odds look like in simple terms?

Using the 23-block figure against 52,560 expected annual blocks gives an annual share of about 0.044%. Another way to say that is roughly one identified solo-mined block for every 2,285 Bitcoin blocks added to the chain.

For regular readers, that is why solo mining stories get treated like lottery-style wins. A solo miner is not just competing with one other machine. They are competing with the combined computing power of the entire global Bitcoin mining network.

The tracker also puts the average interval between identified solo blocks at about 16.1 days. That does not mean a solo miner can expect a win every two weeks. It means even across the whole public dataset, these wins appear sporadically and remain exceptional.

Why the true number is hard to prove exactly

Bennet’s tracker says it uses Bitcoin blockchain data from the mempool.space API and cross-checks it against known solo-mining payout patterns. The same page also states that the list is not comprehensive and that solo-mining attribution is inherently imperfect.

That caveat matters. Bitcoin does not include a built-in label that says a block was mined by a solo operator, so attribution depends on heuristics such as payout behavior and the absence of known pool signatures.

Some miners may run private solo setups that never become publicly identifiable. So the low-20s count is best understood as an identified minimum, not as a complete protocol-level census of every solo-mined block worldwide.

The practical takeaway is simple: the headline is directionally strong even if the exact global total cannot be pinned down. Solo Bitcoin mining is still extraordinarily rare, and the publicly tracked data shows just how far outside the norm those wins are.

Disclaimer: This article is for informational purposes only and does not constitute financial advice.

Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.

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