• Sole Bitcoin miner scoops 373K block reward in an intense competition.
• Increasing network difficulty and hashrate compress mining profitability.
• Other earlier solo miners also had a reward of more than 330K in 2025 through CKpool.

A single Bitcoin miner has gone against the odds of the present mining environment and achieved the goal of mining an entire Bitcoin block and receiving a reward worth 372,773 dollars. It is a rare milestone that happened on Saturday, as the miner using the Solo CK pool solved block 907,283, with 4,038 transactions included in it and producing $3,436 in transaction fees.

Source: mempool.space

Against All Odds: Solo Mining Success in 2025

The success of solo mining has become a rarity with the massive increase in network difficulty, now at approximately 126 trillion, and the ever-increasing hashrate, which vastly benefits large-scale mining. Nevertheless, individual miners such as this new winner still pop up and demonstrate that an individual miner can keep up with large corporations that dominate Bitcoin mining.

The triumph of this very miner is a reflection of a number of previous single-mining successes in 2025. Remarkably, a solo miner with a 2.3 petahash rig via the same CKpool mined block 903,883 on July 4th and claimed around $350,000. Previously, on June 5th, a different miner in Solo CK pool mined block 899,826 and received 3.151 BTC valued at $330,386 during the period . In the current size, such events are statistical curiosities, as a 2.3 petahash installation represents a tiny percentage of the entire network hashrate of over 846 exahashes per second; industry estimates calculate a probability of success at approximately once every eight years by such miners.

This sequence of unlikely victories supports the long-term decentralized character of the Bitcoin mining process, where even though there is enormous pressure towards centralization, the smaller actors are sometimes able to score large.

Rising Difficulty Squeezes Miners as Competition Intensifies

Difficulty in the Bitcoin network is increasing; thus, miners have to constantly use more computing power and energy to crack blocks. The current block reward is 3.125 BTC, and blocks mined are valued at approximately 373,000 dollars at the current prices.

These low profit margins drive the mining companies to find the least expensive sources of energy, and at the same time to ensure uptime, which is influenced by climate, weather, and grid reliability. To give an example, in June, certain mining facilities in Texas were forced to cut down on power in order to evade peak charges on the grids, which directly affected block production rates. Other companies, such as Marathon Digital (MARA), posted reduced mining activities because of these conditions.

The continuous increase in hashrate and network difficulty strains every miner, no matter how small or large, but is especially problematic to solo miners that compete without the economies of scale and infrastructure of the large mining companies.