First Mining Pool (Slush Pool) Launches
Marek Palatinus launches the first mining pool, saving the decentralized mining model from industrial consolidation.
On November 27, 2010, Czech developer Marek Palatinus (known as Slush) announced the beta launch of the Bitcoin Pooled Mining server, which would later become known as Slush Pool. The announcement on Bitcointalk addressed a critical existential threat to Bitcoin: the "variance problem." As GPU mining drove the network difficulty up, it became statistically impossible for a solo miner with a single computer to find a block. A small miner might run their machine for years and earn zero Bitcoin, while large farms won everything.
Slush's innovation was a protocol that allowed miners to work together. The pool server would send small, easier work units (shares) to connected miners. Miners proved they were working by solving these easier shares. When any miner in the pool found a valid block hash for the real Bitcoin network, the 50 BTC reward was split among all participants proportional to the shares they had submitted. This smoothed out the rewards, providing a steady trickle of income rather than a lottery ticket.
The pool mined its first block on December 16, 2010. While some purists worried that pools introduced centralization (since the pool operator selects the transactions), Slush Pool was open-source, allowing other pools to form. Slush Pool saved Bitcoin mining for the little guy, creating the cooperative infrastructure that allows individual miners to remain competitive against industrial operations to this day.
Key Sources:
• Bitcointalk: Slush's Pool Announcement
• Braiins: History of Slush Pool
• Bitcoin Wiki: Pooled Mining