A mining pool is a collective of cryptocurrency miners who combine their computational power (hashrate) over a network to increase the probability of finding a block. When the pool successfully mines a block, the reward is split among participants based on their contributed processing power.
Individual miners connect their hardware to a pool's server and receive small portions of the mining work to complete. Each miner submits "shares" - proof that they are performing calculations - and the pool tracks each miner's contributions. When the pool finds a valid block, the block reward (currently 3.125 BTC for Bitcoin) plus transaction fees are distributed proportionally based on each miner's share of the total work.
Pools use different payout schemes. Pay-Per-Share (PPS) pays miners a fixed rate for each valid share regardless of whether the pool finds a block. Pay-Per-Last-N-Shares (PPLNS) only pays when blocks are found, distributing rewards based on recent contributions. Full-Pay-Per-Share (FPPS) includes estimated transaction fees in the per-share payout. Each method balances risk differently between the pool operator and the miners.
Solo mining Bitcoin with a single machine is like buying one lottery ticket for a drawing with billions of entries. The math makes it nearly impossible for small operators to find a block on their own. Mining pools reduce variance, providing smaller but more consistent payouts instead of rare, large windfalls. This makes mining economically viable for individual participants and small operations.
However, pool concentration raises centralization concerns. If a single pool controls more than 50% of a network's hashrate, it could theoretically execute a 51% attack. The Bitcoin community actively monitors pool distribution, and miners are encouraged to spread across multiple pools to maintain network security.
The TerminalFeed dashboard tracks mining-related data in the BTC Network panel, including current hashrate and block information. The Whale Watch panel can show large mining pool payouts moving on-chain.