HashPrediction

Binary prediction markets on HashKey Chain. Users create YES/NO markets, bet with mUSDC, and claim proportional payouts when markets resolve.

Project Structure

HashPrediction/
  contract/       # Solidity smart contracts (Foundry)
  front-end/      # Next.js web application

Deployed Contracts (HashKey Testnet, Chain ID 133)

Contract	Address
HashPrediction	0xC89bE9D4124E75869174ABd46b47De5a0d7e57E9
MockERC20 (mUSDC, 6 decimals)	0x9cefc16AD9dD2a4be819c616017F51d3A016C6ab
Admin	0xafb5963275f4E0F75AC472F7ABDfAeD06903d85C

• RPC: https://testnet.hsk.xyz
• Explorer: https://testnet-explorer.hsk.xyz

Quick Start

Smart Contracts

cd contract
forge install
forge build
forge test

Deploy to HashKey Testnet:

forge script script/Deploy.s.sol --rpc-url https://testnet.hsk.xyz --broadcast --legacy -vvvv

Seed sample markets:

forge script script/Seed.s.sol --rpc-url https://testnet.hsk.xyz --broadcast --legacy -vvvv

Frontend

cd front-end
npm install
npm run dev

Open http://localhost:3000 and connect MetaMask with the HashKey testnet.

How It Works

1. Create Market - Anyone posts a YES/NO question with a resolution time and optional fee
2. Place Bets - Users bet mUSDC on YES or NO before the resolution time
3. Resolve / Cancel - After resolution time, admin resolves with a winner or cancels
4. Claim - Winners claim their original bet plus a proportional share of the losing pool

License

MIT