Documentation

The Reward Rate (displayed as fspRewardRate) represents the FTSO Scaling Provider reward rate derived from WNAT (Wrapped Native Asset Token) claims.

It reflects how effectively a data provider is earning rewards relative to the delegation it receives. A higher reward rate indicates stronger provider performance over the measured period.

Values greater than or equal to 1 are considered anomalous and are displayed as -- in the UI. Valid reward rates are shown to four decimal places.

The Reward Rate CV (coefficient of variation) measures the consistency of a provider's reward rate across epochs. A lower CV indicates more stable, predictable performance.

The Staking APR estimates the annualised return for delegators staking to a validator node.

Per-epoch reward rate

For each reward epoch and validator node, two reward rates are computed and summed:

• normalRate — the node’s reward (after the validator fee is deducted) divided by its total stake at epoch end.
• mirrorRate — the MIRROR claim pool for that node divided by its stake weight at the vote-power block (a separate snapshot).

Annualisation

To turn the per-epoch rate into an APR displayed on the validator table:

1. Take the latest epoch’s combined rate as the current rate.
2. Smooth with a 4-epoch moving average.
3. Annualise by multiplying by epochsPerYear (≈ 104, derived from actual epoch timestamps).

Entity harmonisation

When multiple validator nodes belong to the same entity, their APR values are harmonised to a single weighted value across that entity’s active stakes.

Actual returns may vary as reward amounts and delegation totals change each epoch.

Data source: flare-foundation/reward-scripts

The FSP APR (FTSO Scaling Provider APR) represents the estimated annualised return for delegators based on FTSO reward distributions.

To filter out unreliable outliers, FSP APR values exceeding 15% are hidden from the UI and displayed as --.