In an astonishing sequence of events, two lucky miners from the Solo CK mining pool defied all odds and added a new block to the Bitcoin blockchain in the same week.
On Monday, a small miner solved a block at a modest hash rate of 126 terahashes per second (TH/s). Hass McCook, a bitcoin mining expert and member of the Bitcoin Mining Council, told Cointelegraph at the time that the odds were 1 in 1,400,000.
But according to a tweet from solo moderator Kon Colivas on January 13, another miner from the same pool was able to solve a block with a capacity of just 116 terahashes per second (TH/s) – even less than the first miner. There will likely be between one and three mining rigs, depending on the hardware used.
Colivas added that the new miner joined the pool less than two days ago, “presumably in response to another lucky fisherman.”
“They were astronomically fortunate to have made a solo block at the time,” he wrote.
“This is crazy good luck at work and a very unusual event.”
Potential luck may even be an understatement. McCook tells Cointelegraph that the odds are so unlikely that he doesn’t even know how to calculate them mathematically.
He assumed that the chances of a small miner like this succeeding are one in a million, so two successes in a few days would be at least one in a billion.
Related: Small Bitcoin Miner Challenges Huge Opportunities to Solve a Viable Block
“Saying it’s very rare not to say anything,” McCook said when the first miners minted the block.
Miners who can only mine on one or two machines will each take 6.25 Bitcoin (BTC) ($266,000) per share.