Solo Miner Strikes Gold: Wins $347K Bitcoin Block Against the Odds

By José Oramas September 09, 2025 In Bitcoin, Bitcoin Mining
Bitcoin mining, trading chart, cryptocurrency
Source:AdobeStock
  • A solo Bitcoin miner struck it rich on September 7, successfully mining block #913,593 and earning a reward of 3.13 BTC, worth US$347,980.
  • The miner, operating with a hash rate of 200 TH/s on the CKPool platform, had a chance of success of about 1 in 36,000 per day, or about once every 100 years, according to the pool’s administrator.
  • This is the second such solo-mined block on CKPool in September and happened as the Bitcoin mining difficulty recently surged by 4.89% to a new all-time high.

On September 7, a lucky solo miner managed to mine Bitcoin block #913,593, earning 3.13 BTC, valued at US$347,980 (AU$516,720).

The block included 593 transactions, generating an additional 0.004 BTC in fees, about US$471 (AU$699). The miner operated at 200 TH/s using the CKPool platform. According to pool administrator Con Kolivas, the probability of success with such capacity was about 1 in 36,000 per day, or roughly once in 100 years.

This marks the second solo-mined block in September, following one confirmed on September 1 on CKPool. In August, another miner solved block #910,440, earning 3.137 BTC valued at about US$365,000 (AU$541,600), as Crypto News Australia reported.

Solo CKPool enables individuals to mine without running a full Bitcoin node, offering smaller operators the chance to compete against industrial-scale miners. But success for solo miners is rare due to competition from farms operating hundreds of ASIC machines.

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Bitcoin Mining Difficulty Surges

Likewise, this happened at the same time that the Bitcoin mining difficulty surged 4.89% on September 5 to a record 136.04T, marking the fifth consecutive increase, as per Ycharts. Though inter-block intervals remain below the 10-minute target, it’s expected to increase sooner or later.

Related: Kazakhstan Launches State-Backed Bitcoin Reserve to Anchor Digital Asset Strategy

Glassnode data shows the 7-day moving average hash rate exceeded 1 ZH/s at the end of August before adjusting to 973 EH/s at the time of writing.

Bitcoin is currently trading at US$112.2K (AU$170K), a modest 1.1% increase in the last 24 hours, according to CoinGecko. All in all, it’s been a few quiet (or dull) days for Bitcoin and most crypto assets. It seems like prices are stalling as ETF outflows exceeded US$380M during the same period.

José Oramas
Author

José Oramas

José is a journalist and translator with a keen interest in blockchain and cryptocurrencies.

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