Polymarket
AuditedVerifiedBlue ChipPolymarket is the world's largest decentralized prediction market, where users trade binary Yes/No outcome contracts on real-world events (politics, sports, crypto, geopolitics) settled via the UMA Optimistic Oracle on Polygon.
Active Risk Alerts
Live signals detected by Sentinel monitors across all five risk classes.
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Score history
This rating is re-checked every month. A point is recorded for every check, so a flat line means we looked and nothing moved. Hover anywhere on the chart to see what moved that month, and by how much.
The Problem
Traditional prediction markets are either illegal, KYC-gated, low-liquidity, or centrally settled, leaving no scalable place to express probabilistic views on real-world events with on-chain finality.
The Solution
Polymarket combines an off-chain CLOB matching engine with on-chain CTF position issuance and UMA-Oracle resolution, offering instant trading and permissionless redemption to $1/share on the winning side.
Why it Matters
Category-definer for on-chain prediction markets with ~$33B cumulative volume, the highest-profile electoral and sports markets in crypto, and a $5M Cantina bug-bounty backstop on immutable core contracts.
Protocol Metrics
Related Research
View allFrequently asked questions about Polymarket
What is Polymarket?+
Polymarket is a Prediction Market protocol operating on Polygon. Polymarket is the world's largest decentralized prediction market, where users trade binary Yes/No outcome contracts on real-world events (politics, sports, crypto, geopolitics) settled via the UMA Optimistic Oracle on Polygon.
How does Polymarket work?+
Polymarket combines an off-chain CLOB matching engine with on-chain CTF position issuance and UMA-Oracle resolution, offering instant trading and permissionless redemption to $1/share on the winning side.
Is Polymarket safe?+
DeFi Sentinel rates Polymarket AAA with a safety score of 94/100, indicating highest safety tier. The score reflects five risk dimensions: smart contract & technical risk, economic design & market risk, governance & centralization, sustainability & competitive position, and reputation & social trust. Polymarket has 3 audits on record. DeFi Sentinel's analysis flagged 2 medium, 1 low risk alerts across Governance & Centralization and Smart Contract & Technical Risk. As with all DeFi protocols, residual risk remains and users should review the full risk breakdown before depositing.
What is the safety score of Polymarket?+
Polymarket has a DeFi Sentinel safety score of 94/100 (rating AAA), last updated September 17, 2026. The score is computed across smart contract & technical risk (30%), economic design & market risk (25%), governance & centralization (20%), sustainability & competitive position (15%), and reputation & social trust (10%).
Which chains does Polymarket support?+
Polymarket is deployed on Polygon.
Has Polymarket been audited?+
Yes. Polymarket has 3 audit reports on record from firms including Quantstamp, Cantina, ChainSecurity. Audit reports and dates are linked under the Resources tab on this page.