A solo miner hit the jackpot on Friday (July 4), mining Bitcoin block 903,883 through Solo CK. The total haul reached 3.173 BTC, worth a staggering $349,000. This rare feat echoes a similar triumph from June, sparking buzz across the crypto world.
🕘 What Happened Today
Block 903,883 was mined at 05:37 UTC, courtesy of Solo CK. The miner scored 3.173 BTC, including 3.125 BTC from the block reward plus 0.048 BTC in transaction fees. At current BTC prices, that amounts to roughly $349,000.
The block packed 1.57 MB and processed over 3,300 transactions. Fees averaged 3 sat/vByte, a modest but telling detail of current network activity.
🔍 Decoding Solo CK
Solo CK, the brainchild of developer Con Kolivas, is a niche mining pool for solo operators. Unlike traditional pools, it hands the entire block reward to the finder—no splits.
It attracts miners using personal rigs or temporarily rented hash power. Its public dashboard, updated in real time, makes its operations transparent. This setup fuels the dream of solo success in a landscape dominated by massive mining pools.
🎲 Why Is This So Rare?
The odds of a solo miner striking a block are incredibly low. Major pools control most of Bitcoin’s total hash rate, dwarfing individual efforts. It’s akin to winning a lottery with billions of tickets in play.
Yet, underdog victories like this continue to happen—and the crypto community takes notice. Solo CK has seen similar wins in 2022, 2023, and now twice in 2025.
📅 It Happened Again in June
Back on June 5, 2025, block 899,826 was also mined by a solo miner via Solo CK. That reward brought in 3.151 BTC, or $330,000 at the time.
Notably, the miner’s hash rate briefly spiked to 259 PH/s, suggesting rented power was in use. Both recent wins trace back to the same pool—a quirky coincidence that highlights how Solo CK continues to make room for rare solo victories.
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