A service that combines miners' work to reduce the variance of payouts.
Mining pool meaning
A solo miner may wait a very long time to find a block. A pool measures contributions from many miners and distributes earned revenue more regularly. Pooling changes payout variance, not the network's total expected block production.
How it works in Bitcoin
Miners submit shares: hashes that satisfy an easier pool target and demonstrate contributed work. Occasionally a share also meets the network target, allowing the pool to publish a block. Payout methods allocate fees, timing risk, and variance differently.
A simple example
A miner contributing 1% of a pool's credited work may receive roughly 1% of distributable rewards under a proportional model, subject to luck and pool rules.
Why Mining pool matters
Mining terms connect proof of work, block production, incentives and energy. They should not be used as shorthand for node validation or guaranteed profitability.
What people often get wrong
Compare payout method, fees, custody, transparency, block-template control, reliability, and minimum payouts. A large pool can also create coordination and censorship concerns.
Quick checks before using the term
- Is this about hashrate, energy, revenue or validation?
- Which unit and period does the claim use?
- What changes when difficulty or fees move?
Apply these questions to the concrete example above. A precise answer is more useful than repeating the definition without naming the actor, rule or failure path.
Check the primary reference
This entry is written in plain English, but the technical source is available when you need exact protocol detail.
Bitcoin Developer Guide: Mining ↗