⬡ GenMarket — AI-Verified Prediction Market

A decentralized prediction market powered by GenLayer intelligent contracts. Anyone can create a market, anyone can bet YES or NO, and when the deadline passes, GenLayer AI validators independently verify the real-world outcome and reach consensus — no human judges, no oracles, no trust required.

Live Demo: https://genmarket.netlify.app Backend: https://prediction-market-sbzw.onrender.com/health Contract: 0x3CF8B9fB22934282a7290820e1e6ECa7086dbb25 on GenLayer Studionet GitHub: https://github.com/Investorquab/prediction-market

Built for the GenLayer Bradbury Builders Hackathon.

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How It Works

1. Create a market — ask any real-world question with a deadline (e.g. "Will BTC exceed $100k before July 2026?")
2. Place bets — anyone bets YES or NO with GEN tokens
3. Wait for deadline — pools accumulate on-chain
4. Anyone resolves — after the deadline, any user clicks Resolve
5. AI reaches consensus — GenLayer validators independently verify the outcome
6. Winners paid out — payout ratio calculated automatically on-chain

No human judge. No trusted oracle. Pure AI consensus.

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GenLayer Contract

Address: 0x3CF8B9fB22934282a7290820e1e6ECa7086dbb25

Method	Type	Description
create_market(question, deadline, category, creator)	write	Creates a new prediction market on-chain
place_bet(market_id, side, amount, user)	write	Places a YES or NO bet on a market
resolve_market(market_id)	write	AI validators verify outcome and resolve market
get_market(market_id)	view	Read a single market by ID
get_all_markets()	view	Fetch all markets for the frontend
get_stats()	view	Total markets, open, resolved, yes/no outcomes

AI Resolution Prompt

The contract asks GenLayer validators:

"Based on publicly available information, has this event occurred as of the deadline? Return resolved: true/false, outcome: YES/NO/UNRESOLVED, reasoning, and confidence level."

Multiple validators run this independently. If they agree → outcome is finalized on-chain. If not enough confidence → market stays open for retry.

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Tech Stack

• Smart Contract: Python on GenLayer Studionet — AI consensus resolution via unsafe_eq
• Backend: Node.js + Express — REST API, GenLayer JS SDK integration
• Frontend: Vanilla HTML/CSS/JS — dark trading terminal UI
• Deployment: Render (backend) + Netlify (frontend)

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Architecture

Browser (Netlify)
    ↕ HTTP REST API
Render Backend (Node.js)
    ├── GET  /api/markets        — fetch all markets
    ├── GET  /api/markets/:id    — fetch single market
    ├── POST /api/markets/create — create market on GenLayer
    ├── POST /api/markets/bet    — place bet on GenLayer
    ├── POST /api/markets/resolve — AI resolve via GenLayer
    └── GET  /api/stats          — global statistics
        ↕ genlayer-js SDK
GenLayer Studionet
    └── PredictionMarket contract
            ├── markets: TreeMap
            ├── bets: TreeMap
            └── AI consensus resolution

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Local Setup

git clone https://github.com/Investorquab/prediction-market
cd prediction-market
npm install
OPERATOR_PRIVATE_KEY=your_key CONTRACT_ADDRESS=your_ca node server.js

Open index.html in browser — update BACKEND to http://localhost:3007.

Environment Variables

OPERATOR_PRIVATE_KEY=0x...
CONTRACT_ADDRESS=0x...
PORT=3007

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Market Categories

• Crypto — BTC price targets, ETH upgrades, token launches
• Sports — match results, championship winners
• Politics — election outcomes, policy decisions
• Tech — AI model releases, product launches
• Other — any verifiable real-world event

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Deployer wallet: 0xcD7f401774D579B16CEBc5e52550E245d6D88420 Built for the GenLayer Bradbury Builders Hackathon.