A solo Bitcoin miner running roughly 3 petahashes per second of computing power beat approximately 1-in-28,000 odds to mine block 853,742 through Solo CKPool on July 24, 2024, collecting 3.139 BTC in a payout worth about $210,000 at the time.
What Happened When a Solo Bitcoin Miner Found Block 853,742
The miner was not a large industrial operation or a publicly traded mining company. It was a single participant hashing against the entire Bitcoin network through Solo CKPool, a service that lets individual miners compete for full block rewards instead of splitting payouts across a traditional pool.
At roughly 3 PH/s, this miner controlled a tiny fraction of Bitcoin’s total network hashrate. The odds of solving a block with that capacity worked out to about once every 28,000 blocks, or roughly once every 194 days of continuous mining.
Think of it this way: if 28,000 miners each with 3 PH/s were all mining simultaneously, on average only one would find a block in any given round. For a single miner at that level, months of running equipment with no payout is the expected outcome, not the exception.
Con Kolivas, the developer behind Solo CKPool, confirmed the achievement on X.
“Congratulations to a miner with ~3PH who solved block 853,742 on solo.ckpool.org! Odds of this happening with that hashrate was once every 28,000 blocks (~194 days).”
— Con Kolivas (@ckpoolj on X)
How the Reward Worked and Why the Numbers Need Context
Every Bitcoin block carries two revenue components. The block subsidy is the newly minted BTC the protocol creates, currently set at 3.125 BTC per block following the April 2024 halving. Transaction fees, paid by users to have their transfers included, sit on top of that subsidy.
For block 853,742, the total reward came to roughly 3.192 BTC: the 3.125 BTC subsidy plus approximately 0.067 BTC in fees. The headline figure of 3.139 BTC, however, is slightly less than that full total.
The gap likely reflects Solo CKPool’s operational fee. The pool provides infrastructure connecting solo miners to the network, and that service carries a small cost deducted before the reward reaches the miner’s wallet. This is a common mechanic across mining pools, including those used in major crypto ecosystems tracking market dominance.
The $210,000 valuation is an approximation tied to Bitcoin’s price at the time. With BTC trading near $67,000 in late July 2024, the 3.139 BTC the miner received translated to roughly that dollar figure. It is not a fixed amount but a snapshot of where Bitcoin stood that day.
ON-CHAIN DATA
- Block: 853,742
- Total reward: ~3.192 BTC (3.125 BTC subsidy + ~0.067 BTC fees)
- Miner collected: 3.139 BTC (~$210,000 at time of mining)
- Pool: Solo CKPool (solo.ckpool.org)
- Date: July 24, 2024
Why Rare Solo Mining Wins Still Matter for Bitcoin
Bitcoin mining today is dominated by industrial-scale operations running hundreds of thousands of machines. The network’s current difficulty sits at approximately 138.97 T, with total hashrate around 1.029 EH/s. Against that backdrop, a lone miner with 3 PH/s is a rounding error.
Yet the fact that a small operator can still win a full block reward is a direct demonstration of Bitcoin’s open, permissionless design. No one needs approval to mine. The protocol treats every valid hash equally, whether it comes from a publicly traded company or a single person running hardware at home.
That said, this outcome should not be mistaken for a viable strategy. The 1-in-28,000 odds mean the expected wait time between solo wins stretches across many months. Most solo miners will spend far more on electricity than they ever recover in block rewards. The economics strongly favor pooled mining for consistent returns, a dynamic familiar to anyone following how different crypto projects deliver gains through varied mechanisms.
Stories like this generate significant community interest precisely because they are outliers. Social sentiment around the event reflected high enthusiasm, with the broader crypto community noting the achievement alongside broader market rallies. These moments echo the early days of Bitcoin when individual miners regularly found blocks using consumer hardware, a period that ended as difficulty climbed and ASICs became standard.
For casual BTC holders and newcomers curious about mining, the practical takeaway is straightforward: solo mining is a lottery ticket with transparent odds, not an investment plan. The network’s security depends on the thousands of miners who show up every day without hitting the jackpot, and that collective effort is what keeps Bitcoin decentralized.
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.
