Yeliz Akmaca 
A solo Bitcoin miner successfully mined block 913,632 on September 7, 2025, earning 3.13 BTC (approximately $347,872). This marks the second independent solo mining success this month.
The block contained 593 transactions worth a total of $52.6 million. The average transaction size was 0.7987 BTC, and the miner’s reward included the standard block reward of 3.125 BTC plus 0.0042 BTC in transaction fees.
The miner used Solo CKPool to mine the block. This platform allows individual miners to compete against industrial mining giants. While Solo CKPool enables smaller operations to participate, success in solo mining remains extremely rare, as participants must compete with miners operating large-scale ASIC devices.
Bitcoin Mining Challenges
Bitcoin mining difficulty adjusts every 2,016 blocks to maintain an average block time of approximately 10 minutes. This adjustment increases mining difficulty, making solo mining increasingly rare. For example, a miner operating at 1 petahash per second has roughly a 1 in 4.26 million chance of finding a block.
Currently, Bitcoin mining difficulty stands at 136.04 trillion, near all-time highs, making it extremely difficult for individual miners to find a block.
Peter Chung, Head of Research at Presto Labs, commented:
“Among all blockchain networks, none compare to Bitcoin in terms of decentralization. Events like these contribute to that narrative.”
“A single miner finding a block is as rare as winning a lottery. Large miners and mining pools split tasks among themselves, gaining efficiency and stability. For most participants, joining pools is more practical, providing regular payouts. To make Bitcoin more decentralized, what’s needed are more diverse mining pools.”
What is Solo CKPool?
Solo CKPool allows individual miners to mine blocks using their own hardware. In this system, miners who find a block receive the full reward, while those who don’t find one earn nothing. This makes solo mining riskier but offers potentially large rewards when successful.
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