sFRAX
Strong trust profile for this stablecoin. TrustGrade score 81/100 (Grade B+).
Score Breakdown
How the TrustGrade algorithm computed this score.
Wilson Score Lower Bound
95% confidence interval lower bound on positive outcome rate. Penalizes small samples automatically.
Bayesian Posterior
Beta(α,β) posterior mean with sceptical prior. Adjusts observed rate toward conservative estimate.
Incident Penalty
Compound penalty: 1−(1−s)². 10% incidents → 19% penalty. 30% → 51%.
Volume Bonus
Log-credibility bonus: log₁₀(n)×k. More data = more confidence, diminishing returns.
Signal Contributions
Each signal's contribution to the final score. Positive = trust-building. Negative = risk-indicating.
| Signal | Value | Weight | Contribution | Visualization |
|---|---|---|---|---|
| Peg Stability | 85.0% | ±7 | +4.90 | |
| Collateral Quality | 80.0% | ±8 | +4.80 | |
| Depeg History | 80.0% | ±9 | +5.40 | |
| Regulatory Compliance | 75.0% | ±4 | +2.00 | |
| Redemption Mechanism | 82.0% | ±4 | +2.56 |
Why this grade?
Strong trust profile for this stablecoin. TrustGrade score 81/100 (Grade B+).
The TrustGrade algorithm combines the Wilson score lower bound (which requires substantial evidence to score high), a Bayesian posterior (which shrinks toward a conservative estimate when sample sizes are small), a compound incident penalty (which grows faster than linear), a log-credibility volume bonus, and 5 weighted optional signals specific to stablecoins.
Use this score
Query the TrustGrade API or embed a badge on your site.
API Query
curl -s https://api.trustgrade.ai/v1/score/stablecoin/sFRAX \
-H "Authorization: Bearer $TRUSTGRADE_KEY" | jq .{
"entity": "sFRAX",
"type": "stablecoin",
"score": 81,
"grade": "B+",
"confidence": 0.8799,
"summary": "Strong trust profile for this stablecoin. TrustGrade score 81/100 (Grade B+).",
"breakdown": {
"wilson": 0.8679,
"bayesian": 0.8333,
"incidentPenalty": 0.02,
"volumeBonus": 3.5
},
"computedAt": "2026-07-21T00:00:00.000Z"
}Embed Badge
<script src="https://trustgrade.ai/widget.js"></script>
<div data-trustgrade="stablecoin:sFRAX" data-size="medium"></div>