Solo Bitcoin Miner Makes Over $330K in Rare Outcome

On Thursday, a solo Bitcoin miner using the CKpool platform successfully mined block 899,826, receiving a total of 3.15 BTC, valued at roughly $330,386. This marks the 300th solo block mined via CKPool.

Congratulations to miner bc1qa8r4up9nchkvdnhcf9feexv2jfantrk48ef374 who recently ramped up hashrate for solving the 300th block solved at https://t.co/UWgBvLkDqc! https://t.co/36sDX051fH pic.twitter.com/NY2KJUxlQQ

— Dr -ck (@ckpooldev) June 4, 2025

According to data from the Mempool block explorer, the payout included the standard 6.25 BTC subsidy (worth around $327,625) and about $2,761 in transaction fees. The relatively small fee portion reflects low network activity at the time. Average transaction fees hovered around $0.29, while the median fee rate was just 2 satoshis per virtual byte (sat/vB), indicating minimal congestion on the network when the block was mined.

A Rare Outcome

The recent rare win comes amid record mining difficulties. On June 1, the Bitcoin network’s difficulty climbed to an all-time high of 126.98 trillion. This metric tracks how hard it is to mine a block and is tied to the total network hashrate, which has reached 796 exahashes per second (EH/s) as of June 5. As the hashrate rises, it becomes even harder for solo miners to compete.

Bitcoin’s protocol automatically recalibrates difficulty every 2,016 blocks based on hashrate changes. Given current levels, the odds of a solo miner finding a valid block are extremely slim, roughly 1 in 3,050, or just 0.03%.

Despite those odds, the miner behind block 899,826 achieved the rare feat by temporarily increasing their hashrate to around 260 petahashes per second (PH/s). Con Kolivas, CKPool administrator and software engineer, noted that the surge was likely the result of rented computing power, as only one worker was active during the event. Still, leased or not, the success remains notable.

Solo Mining Streak

The 300th solo-mined block marks another milestone in a rising series of solo mining successes in 2025. On March 10, a lone miner using a modest setup solved block 887,212, earning 3.15 BTC, then worth around $263,000. A similar feat occurred in April 2024, when another solo miner found block 841,286 and took home more than $200,000 worth of BTC.

Meanwhile, BitFuFu, a bitcoin mining company based in Singapore, achieved a notable monthly production in May, generating 400 BTC. This marked a 91.4% increase compared to April.

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