OpenZeppelin Contracts
Exceptional trust profile for this smart contract. Large dataset (5,400 data points) provides high confidence. Audit Coverage above average. Exploit History above average.
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 |
|---|---|---|---|---|
| Audit Coverage | 100.0% | ±9 | +9.00 | |
| Exploit History | 100.0% | ±10 | +10.00 | |
| Source Verified | 95.0% | ±5 | +4.50 | |
| TVL Coverage | 94.0% | ±5 | +4.40 | |
| Contract Maturity | 100.0% | ±5 | +5.00 |
Why this grade?
Exceptional trust profile for this smart contract. Large dataset (5,400 data points) provides high confidence. Audit Coverage above average. Exploit History above average.
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 smart contracts.
✅ Exceptional: This entity scores in the top tier of the TrustGrade methodology, indicating strong trust signals across all measured dimensions.
Use this score
Query the TrustGrade API or embed a badge on your site.
API Query
curl -s https://api.trustgrade.ai/v1/score/smart_contract/OpenZeppelin%20Contracts \
-H "Authorization: Bearer $TRUSTGRADE_KEY" | jq .{
"entity": "OpenZeppelin Contracts",
"type": "smart_contract",
"score": 100,
"grade": "A+",
"confidence": 1,
"summary": "Exceptional trust profile for this smart contract. Large dataset (5,400 data points) provides high confidence. Audit Coverage above average. Exploit History above average.",
"breakdown": {
"wilson": 0.9993,
"bayesian": 0.8992,
"incidentPenalty": 0,
"volumeBonus": 9.33
},
"computedAt": "2026-07-12T16:55:26.299Z"
}Embed Badge
<script src="https://trustgrade.ai/widget.js"></script>
<div data-trustgrade="smart_contract:OpenZeppelin%20Contracts" data-size="medium"></div>