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PolyYield

Winner @ NexHacks. No-lose prediction markets where your principal is always protected. Winners earn yield, losers get their deposit back.

PolyYield

Overview

PolyYield removes the #1 barrier to prediction market adoption: fear of losing money. Users deposit USDC into Solana vaults managed by custom Rust/Anchor smart contracts. Deposits are pooled and lent through DeFi protocols generating ~12% APY. Winners earn the yield, losers get their full principal back, creating genuinely zero-risk trading. Real-time Polymarket API integration synchronizes off-chain market data with on-chain positions, while Solana's low transaction costs and fast finality enable seamless deposits, position updates, and instant withdrawals without gas fee concerns.

Key Features

  • Guaranteed principal protection with zero-risk prediction markets using DeFi yield distribution
  • Custom Solana smart contracts in Rust/Anchor managing USDC vaults and on-chain settlement
  • Real-time position tracking with live market data synchronized from Polymarket API
  • Automated yield generation through DeFi protocols (~12% APY) distributed to winners only
  • Seamless wallet integration with Solana Wallet Adapter for instant deposits and withdrawals
  • Fast, low-cost transactions leveraging Solana's architecture for real-time user experience
  • Scalable account model supporting concurrent users in shared prediction pools
  • Intuitive UI simplifying complex financial models for mainstream adoption

Awards

  • NexHacks 2026 Winner @ CMU
  • Attempted Polymarket Track
  • Attempted and won Best Use of Solana

Tech Stack

Next.jsReactTypeScriptTailwind CSSSolanaRust/AnchorSupabasePostgreSQLThree.jsReact Three Fiber