Solo Bitcoin Miner Beats 1-in-300-Year Odds to Win Full BTC Block Reward

A solo Bitcoin miner with only 70 TH/s of the network’s computing power has successfully mined a full block, underscoring the increasingly rare — but still possible — odds of small-scale participation in an industry dominated by industrial operators.

The miner, connected via CKPool, solved a block despite contributing only a negligible fraction of global hashrate, according to a post by the pool’s developer on X. “A miner of this size has only a 1 in ~100,000 chance of solving a block per day, or once every 300 years!” he added. The reward — currently 3.125 BTC plus transaction fees — is worth roughly $210,000 at prevailing prices.

The event stands out because the probability of a miner with minimal hashrate finding a block has become vanishingly small as the Bitcoin network hashrate has surged to record levels. With today’s network operating at 1 ZH/s, a 70 TH/s hashing power has a market share of roughly 0.000007%.

Solo mining pools like CKPool allow individuals to attempt block discovery independently while still using pooled infrastructure. Unlike traditional mining pools, however, participants do not share rewards — meaning a successful block yields the entire payout to the winning miner, but with extremely low odds of success.

Such wins have become increasingly sporadic in recent years. As mining economics tighten — with Bitcoin hashprice hovering in the low $30 per PH/s range — most smaller operators have either shut down or joined larger pools to secure steadier payouts.

Still, occasional solo successes highlight the probabilistic nature of Bitcoin’s proof-of-work system, where even the smallest participant retains a non-zero chance of winning the network lottery.