opinion-market
Simple prediction market. It tries to gather user opinion using vanila prediction market.
Demo
About
Encrypted Prediction Markets on Fhenix Decentralized betting platform using Fully Homomorphic Encryption (FHE) on the Fhenix network. Key Features Privacy-preserving betting with FHE Decentralized market creation Binary outcome betting (support/oppose) Automated settlement and fair payout distribution ERC20 token integration for bets Tech Stack Solidity 0.8.24 Fhenix Protocol's FHE.sol Hardhat deployment Fhenix Testnet Process Deploy market with question and expiry Users place encrypted bets Settlement triggered post-expiry Outcome determined via decrypted totals Winners claim proportional payouts
How it's made
Smart Contract (Solidity 0.8.24): Implements market logic, betting, and settlement Uses OpenZeppelin for ERC20 interactions and safety checks Fully Homomorphic Encryption (FHE): Leverages Fhenix Protocol's FHE.sol for encrypted operations Keeps individual bets and votes private on-chain Custom ERC20 Token: Used for placing bets and distributing winnings Hardhat Development Environment: Compilation, testing, and deployment management Custom scripts for deployment and contract verification Fhenix Testnet Deployment: Targets Fhenix network for FHE capabilities Ethers.js for contract interactions Encrypted Data Structures: Uses euint128 for encrypted integers Custom structs combine encrypted and decrypted data Automated Market Settlement: Time-based expiration trigger Decrypts totals only at settlement for fair resolution This implementation showcases advanced cryptographic techniques in DeFi, enabling private, tamper-resistant prediction markets on blockchain.