FPPLNS

FPPLNS is a payout scheme based on the PPLNS principle but using a fixed rule to determine which shares are included in the reward calculation.

The name is commonly expanded as Fixed Pay Per Last N Shares. However, the exact implementation can vary between mining pools. When comparing payout systems in practice, the rules of the specific pool should therefore be used rather than relying on the scheme name alone.

How It Works

The pool receives shares from all connected participants and maintains a history of their work. When a block is found, the pool applies the predefined rule that determines which shares are included in the calculation. Each participant’s contribution is then calculated and the corresponding portion of the reward is distributed.

FPPLNS vs. the General PPLNS Concept

PPLNS describes the general principle of paying according to the last N shares. FPPLNS emphasizes the use of a fixed calculation rule or window. In practice, terminology can differ between pools, so the exact formula should always be checked in the documentation of the specific service.

Parameter	Meaning
Basis	PPLNS
Work accounting	Shares within a defined calculation window
Distribution	Proportional to credited contribution
Exact formula	Depends on the specific pool