In an extremely rare event, a solo Bitcoin miner has successfully mined a full block on the Bitcoin network.
Author: Sahil Thakur
20th December 2025 – In an extremely rare event, a solo Bitcoin miner has successfully mined a full block on the Bitcoin network. The miner used rented hashpower worth just $86 through the NiceHash marketplace and earned over $271,000 in return.
On December 18, the miner discovered Bitcoin block #928,351. According to blockchain records, they received 3.152 BTC in rewards. This included the standard 3.125 BTC block subsidy and 0.027 BTC in transaction fees.
The miner operated outside any major mining pool. This meant they kept the full payout, instead of splitting it with pool members.
The block had 2,806 transactions, a weight of 3.5 million weight units (MWU), and a median fee rate of 2 sat/vB. According to Mempool stats, the block had a health score of 99.96%.
The odds of a solo miner successfully finding a block are incredibly low, especially when renting hashpower instead of running large-scale mining rigs.
Conor Kenny
@conorfkenny
BREAKING: A solo miner spent under $100 on hashpower and mined a full #Bitcoin block, earning 3.12 $BTC worth about $271,000. 🚀 What an absolute legend! https://t.co/FUyw2fGPXV
12:29 PM·Dec 19, 2025
Bitcoin’s global hash rate is currently near record highs, averaging around 1.1 zettahashes per second (ZH/s). With such high competition, solo mining is generally unprofitable and extremely luck-driven.
Most miners rely on pools to distribute rewards more evenly over time. However, Bitcoin’s protocol allows anyone to mine a block, regardless of size or setup, as long as they follow the rules and solve the cryptographic puzzle first.
This is not the first time a solo miner has beaten the odds.
The CKPool developer confirmed this latest block was the 310th instance of a solo miner finding a valid block under current tracking.
Src: CoinMetrics
NiceHash provides a marketplace where users can rent hashpower without owning mining hardware. The platform connects buyers and sellers, making solo mining accessible to anyone with a wallet and a few dollars to spend.
In this case, the miner used NiceHash to buy a small share of computational power. Against all odds, their rented hash solved the block first.
This win comes as most Bitcoin miners face falling profits.
The global hash rate keeps climbing. At the same time, rewards are being split across more machines. This puts strain on even the biggest mining firms.
In fact, the combined market cap of 14 major U.S.-led miners tracked by JPM fell 16% in November. Only Cypher Mining showed gains, thanks to its acquisition of Fluidstack. Bitdeer dropped 40% in performance.
Solo mining is high risk, low probability, and often unrewarding. Yet this event shows that even under the most competitive conditions, luck still plays a role.
It also highlights how accessible mining has become. For under $100 and without owning a single rig, someone mined an entire Bitcoin block and walked away with over a quarter million dollars.
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