Build **DeFiGuard**, a fintech SaaS platform that enables prediction markets and DeFi platforms to comply with KYC/AML without sacrificing decentralization. Key features: 1) **ZK-KYC Gateway** – Uses zero-knowledge proofs to verify user identities without storing data; 2) **Real-Time Fraud Oracle** – Flags suspicious transactions (e.g., wash trading) via on-chain analytics; 3) **SEC Compliance Engine** – Auto-generates audit trails for regulators; 4) **Privacy-Preserving Reputation Score** – Tracks user behavior without exposing identities (e.g., 'User Y: 98% trust score').

Prediction markets (Polymarket, Kalshi), DeFi platforms (Uniswap, dYdX), and retail investors.