A rare event has occurred once again in the Bitcoin ecosystem: a solo miner, operating with about 6 TH/s of hashrate, managed to find a block and receive a reward of approximately $260,000. This case was recorded on CKpool, one of the oldest solo mining pools.
What is Solo Mining and CKpool
CKpool holds a special place among Bitcoin pools, offering solo miners the chance to search for blocks independently. This approach carries a high level of risk, as the probability of finding a block alone is extremely low. Successfully mining a block as a solo miner is a rare event, comparable to winning the lottery, which makes it especially notable within the industry. See also: How a Solo Miner Mined a Bitcoin Block and Earned $285,000
Chances and Hashrate of the Solo Miner
In this case, the miner operated with about 6 TH/s, which is roughly 0.0000006% of the total Bitcoin network hashrate. According to CKpool administrator Con Kolivas, the chance of finding a block under these conditions is 1 in 1.2 million. This highlights just how unlikely success is for solo miners.
Solo Block Finds in 2025
In 2025, CKpool reported 13 cases where blocks were found by solo miners. These events are seen by the community as a true jackpot, since for most solo miners, mining is more of a hobby than a stable source of income. Despite their rarity, such cases demonstrate that even small players have opportunities in the market.
Equipment for Solo Mining
Judging by the reported hashrate, the miner likely used an older but still operational Antminer S9 or a modern mini-miner like Bitaxe. Such devices are often chosen by enthusiasts who connect them to CKpool in hopes of getting lucky. This allows even those with modest hashrate to try their luck at finding a block on their own.
The Mining Market and Public Companies' Share
Amid such stories, it's worth noting that the share of hashrate controlled by US public mining companies, according to JPMorgan, has exceeded 26%. This reflects a trend toward the concentration of computing power among large players, which affects the distribution of hashrate in the Bitcoin network.
Why This Matters
For Russian miners, this news shows that even with minimal hashrate, there is still a chance to earn a significant reward. However, such successes are extremely rare, and relying on them as a main source of income is not advisable. At the same time, the growing share of large public companies in the hashrate may make it even harder for solo miners in the future.
What to Do?
- Assess your capabilities: if you mine with old equipment, your chance of finding a block is minimal, but not zero.
- Use solo mining pools like CKpool if you want to try your luck.
- Monitor market trends and consider that the concentration of hashrate among large companies may impact your strategy.
