Two Solo Bitcoin (BTC) Miners Win Blocks Worth $476,000 Hours Apart on CKPool

Blocks 974,893 and 974,930

Two solo miners walked away with the entire block reward twice on November 7, each solving a Bitcoin (BTC) block unassisted and each collecting more than $230,000 at the prevailing Bitcoin price. On-chain records tie both wins to CKPool’s solo service, and the two blocks reached the Bitcoin network only about seven hours apart, against competition from some of the most powerful mining operations in the industry. The first winning block, number 974,893, was found at 04:51 UTC. It packed 3,955 transactions and paid the 3.125 BTC base subsidy, a level set by the Bitcoin halving schedule, plus 0.0085 BTC in fees, for a total of about 3.1335 BTC, just over $237,000. The second strike came 6 hours and 50 minutes later, at 11:41 UTC. Block 974,930 held 1,964 transactions, collected roughly 0.0177 BTC in fees and paid about 3.1427 BTC, close to $239,000. Combined, the two blocks carried around 6.276 BTC, roughly $476,000 before service fees. Each payout bundles the fixed subsidy with the fees users attached to their transactions, so busier blocks pay slightly more, and the dollar conversions reflect market rates at the time each block was found.

Bitcoin (BTC) developer Mononaut flagged the pairing on X, and mempool records confirm both blocks were produced by Solo CK, the pool’s solo mining endpoint. Solo mining differs from the pooled model most participants use: there is no reward sharing, so whoever finds the block keeps nearly all of it instead of splitting it across thousands of accounts. CKPool deducts a 2% fee for the infrastructure, which means the combined figure of about $476,000 describes the pre-fee total. Wins of this kind are statistical outliers, which is why two in a single day drew such wide attention.

Better Odds Than the Lottery, Steeper Bills

Bitcoin mining behaves like a lottery run at industrial scale. Thousands of machines race to solve a cryptographic puzzle, and roughly every ten minutes one of them wins the right to append a block and claim everything attached to it. For a small operation, the odds of ever hitting that prize are steep. Network difficulty sits close to its all-time high, so the number of guesses a small farm must make before one lands has never been larger. A rig of two or three powerful ASIC mining machines stands roughly a 1-in-40 chance of finding a block across an entire year under current network conditions. That still dwarfs the odds of a single Powerball ticket, which carries a 1-in-292 million chance at the jackpot, and even a modest home device outperforms regular lottery play on paper, though the prizes differ by orders of magnitude.

Pooled mining exists precisely to smooth that variance: it splits every reward across participants, trading a share of each block for a steady trickle of income. Solo play does the opposite, concentrating all the risk and all the payout on one event. The economics are unforgiving. Hardware costs thousands of dollars upfront and must run continuously, and a multi-machine setup can draw $400 to $1,100 in electricity per month, as our beginner’s guide to how Bitcoin mining works sets out. A solo miner earns nothing until a block actually falls, an interval that can stretch into decades, and rising costs and near-record competition across the network sharpen that arithmetic. Small operators do land the prize now and then: a miner running a single machine won a block in April, and the two November wins extend that streak within hours. The comparison with the lottery has its limits, though, since a losing ticket costs a couple of dollars while a mining rig burns power around the clock.

Variance, Not a Business Plan

Read the two November wins as variance, not as proof that home mining has turned profitable. With the subsidy fixed at 3.125 Bitcoin (BTC) by the halving and network competition close to record levels, a solo strike is a lottery outcome paid for in electricity, and the expected value of a small setup stays negative even after a headline win. The industrial side of the ledger tells the same story from the other direction, with IREN’s mining revenue down 58% to $28 million in its latest quarter. Windfalls of this size make news precisely because luck, not economics, produced them.