Performance Score
The Performance Score evaluates an operator's operational track record. It carries the highest weight in the overall Risk Score at 50%, because past behavior is one of the strongest indicators of future reliability.
How It's Calculated
Performance Score = (Slashing x 0.60) + (Stability x 0.30) + (Tenure x 0.10)
| Component | Weight | What It Measures |
|---|---|---|
| Slashing | 60% | Number of slashing events |
| Stability | 30% | 30-day delegation volatility |
| Tenure | 10% | How long the operator has been active |
Slashing Score (60%)
The most heavily weighted factor. Each slashing event carries a severe penalty because slashing represents a fundamental failure to meet security obligations.
| Slashing Events | Score |
|---|---|
| 0 | 100 |
| 1 | 75 |
| 2 | 50 |
| 3 | 25 |
| 4 or more | 0 |
Even a single slashing event drops the score by 25 points. Four or more events result in a zero, reflecting that repeated slashing indicates a serious operational problem.
What this means for you: When evaluating an operator, slashing history is the single most important factor. An operator with zero slashing events has a fundamentally different risk profile than one that has been slashed even once.
Stability Score (30%)
Measures how stable the operator's delegated stake is over the past 30 days, using a metric called the coefficient of variation (CV) --- essentially, how much the delegation fluctuates relative to its average.
| Volatility (CV) | Stability Score |
|---|---|
| 0.0 (no change) | 100 |
| 0.1 (low) | 91 |
| 0.5 (moderate) | 67 |
| 1.0 (high) | 50 |
| 2.0 (very high) | 33 |
The score uses a smooth decay curve: small fluctuations have a minor impact, but high volatility drops the score significantly.
What this means for you: High delegation volatility often signals that delegators are uncertain about the operator. Stable delegation suggests trust and confidence. If you see a low stability score, it's worth investigating why delegators are moving their stake.
Tenure Score (10%)
Rewards operators who have been active in the network for longer. An operator that has been running for a year has a proven track record that a week-old operator simply can't match.
| Operational Days | Tenure Score |
|---|---|
| 30 days | 8 |
| 90 days | 25 |
| 180 days | 49 |
| 365 days | 100 (maximum) |
The score increases linearly up to one year, then caps at 100. This component has a small weight (10%) because tenure alone doesn't make an operator safe --- but it does provide a longer history to evaluate.
What this means for you: Brand-new operators aren't necessarily risky, but there's less data to assess them. Check the Confidence Score alongside tenure to understand how much you can trust the overall assessment.
Example
An operator with:
- 0 slashing events --- Slashing Score = 100
- 0.3 volatility --- Stability Score = 77
- 120 days operational --- Tenure Score = 33
Performance Score = (100 x 0.60) + (77 x 0.30) + (33 x 0.10)
= 60.0 + 23.1 + 3.3
= 86.4
This is a strong Performance Score, indicating a reliable operator with a clean slashing record and reasonably stable delegation.