A solo miner earned $349K by mining Bitcoin block 903883 using only 2.3 PH/s hash power through CKpool.
The miner overcame staggering odds of 1 in 375,300, a rare event usually dominated by large-scale operations.
Bitcoin's rise to $108,400 and favorable regulatory signals are encouraging market participation and investor confidence.
A solo Bitcoin miner successfully mined block number 903883 and secured a reward of 3.173 BTC, totaling $349,028 based on the current Bitcoin price of $108,400. This rare occurrence has sparked attention across the crypto space due to the extremely low probability of such a win.
The miner has achieved that using a mere 2.3 petahashes per second (PH/s) of hash power. Such a strength of processing has an estimated probability of mining a complete block of requests at a rate of 0.004%. The success was realized in the form of a single mining pool, CKpool, that was positioned to serve individual miners and not institutional miners or mining farms.
Institutional Hash Rates Comparison
On average, a full block of the Bitcoin network needs about 166,000 terahashes per second (TH/s), which is roughly 500 Antminer S21 Hydro devices. All these tools require millions of dollars in investments and involve a heavy electric bill. Therefore, any triumph in a one-man wagon with such power underlines a remarkable accomplishment.
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While rare, solo mining wins have occurred in the past. In June 2025, another miner solved block 899826 and earned over $330,000 in reward. A few months earlier, in February 2025, block 883181 was mined solo, producing an approximate $300,000 return. These events further demonstrate that although the chances are minimal, solo mining success is still possible.
Individual Investor Milestones Reflect Market Momentum
Investors such as John Galt have recorded impressive returns, and this is coupled with mining success stories. The fact that he invested a couple of hundred dollars in a Bitcoin gold bar back in 2012 and cashed it in (2025-2012), thirteen years later, to the tune of ten million dollars. This is a major profitability reflective of the increasing prices of Bitcoin, which now trades at over 6 figures per coin.
The overall situation with cryptocurrencies is quite encouraging as well. This has been positively affected by the current adoption of digital assets, such as the policy trends, such as the Trump-friendly crypto bill. People are watching such trends as single victories and institutional changes that create reformation in the market.
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