Five solo Bitcoin miners reported large payouts in 2025 after independently finding blocks, underscoring that solo mining can still deliver outsized rewards. The chance for any single miner to solve a block was around 1 in 2,800, reflecting the dominance of industrial pools over the network’s hashrate.
Several solo-mined blocks in 2025 paid roughly 3.13–3.15 BTC each, translating to dollar values near $350,000 in multiple cases. Specifically, block 913,593 paid 3.13 BTC, worth about $347,980; block 907,283 found through Solo CKPool in July yielded roughly $373,000; a Bitaxe operator mined block 850,000 in March for $257,963; and blocks 910,440 and 913,632 also delivered 3.13–3.15 BTC apiece, each near $350,000.
Hashrate measures how many hashes a miner tests each second, and more hashes increase the probability of meeting the target. The five wins illustrate that while the aggregate network is concentrated in pools, persistence, hardware efficiency and low-cost power can occasionally align for solo miners.
How did they manage to make these profits?
The approximate odds for a solo miner to find a block were 1 in 2,800, a consequence of most hashrate being held by large pools. Four variables are in game at the moment: the rig’s hashrate, electricity price, hardware efficiency and the dollar price of Bitcoin at the moment the block reward is credited. A solo miner pays every cost and, if the hash matches, receives the full 3.125 BTC and transaction fees.
Key risks frame these outcomes without signaling a structural shift. Concentration risk means the five wins do not alter the trend toward warehouse-scale farms. Price volatility moves the dollar value of the reward with Bitcoin’s spot price. Cost economics can erase margins if power is expensive or chips are outdated. The random nature of mining ensures luck can override every other factor on any given block.
