An extremely small-scale Solo CK miner mined a Bitcoin block on Friday, earning 3.146 BTC plus fees equivalent to nearly $265,000 at current prices, according to onchain data.
The miner was supplying just six terahashes per second (TH/s) of computing power at the time the block was mined. For reference, a TH is equivalent to 1 trillion hashes per second, while the typical industry measurement of an exahash equals 1 quintillion hashes per second.
The Bitcoin network hit an average hashpower record of over 855.7 EH/s in October, according to The Block’s Hash Rate data. Six TH/s is roughly 7 billionths of 1% of 855 EH/s, or roughly 0.0000007%.
“A miner of this size has only a in 180 million chance of solving a block each day!” CKpool creator Con Kolivas said on X.
This marks the 308th solo block mined using CKpool software — and the first CK mined block in about three months. It could arguably be called the luckiest solo mined block in recent Bitcoin history: In 2022, a solo miner beat 1 in 1.3 million odds to discover a block using 126 TH/s of power when the Bitcoin hashrate stood around 170 EH/s.
Solo.ckpool.org, launched in 2014, is an anonymous solo mining pool for Bitcoin, where individual miners keep the full block reward if they successfully solve a block, minus a 2% fee.
© 2025 The Block. All Rights Reserved. This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.
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