🚀 GuessLab — Darkpool Prediction Market on Aptos

Private. Fair. Gamified On-Chain Predictions.

🌐 Live Demo: https://guess-lab.vercel.app/

GuessLab is a next-generation prediction market built on the Aptos blockchain, designed for fairness, privacy, and fun. Unlike traditional platforms where bets are public, GuessLab uses a Darkpool Commit–Reveal System to keep predictions hidden until the reveal phase — eliminating manipulation and copy-trading.

Built for the Build on Aptos Hackathon (IBW).

🌑 Why GuessLab?

Existing Aptos prediction platforms (like Panana) expose user bets publicly:

❌ Anyone can see your bet
❌ Whales manipulate markets
❌ No privacy
❌ No game mechanics

GuessLab fixes all of this with:

🔥 Darkpool Prediction Logic

• Private commitments (hashed bets)
• Anonymous positions during commit phase
• Zero-knowledge-style privacy without heavy ZK
• Fair reveal for everyone at the same time

🎮 Photon Gamification

• XP rewards
• PAT token rewards
• User progression
• Embedded wallet support
• Event-based reward triggers

📈 Pyth Oracle Crypto Resolution

• Real-time BTC/ETH price feeds
• Automated resolution for crypto markets

🧠 Architecture Overview

🟣 Move Smart Contract (Aptos)

Contract Address: 0xce3ebc6f453c5152f10be089a252c3703764daa0a0edb17c653f3a4820e134b3

Core on-chain logic includes:

✔ Features

• init_registry()
• create_market()
• commit_bet()
• reveal_bet()
• close_commit_phase()
• resolve_market()
• claim_reward()
• Strong commit–reveal hashing
• AptosCoin escrow system
• Per-user commitment storage

🔒 Darkpool Logic

Commitments are stored as secure SHA-256 hashes:

hash(user_addr | market_id | side | amount | salt)

No observer can guess:

• ✔ Bet side
• ✔ Bet amount
• ✔ User strategy

This is GuessLab's core innovation.

🎨 Frontend (Next.js + TypeScript)

✔ Features

• Real Petra Wallet integration
• Full devnet connectivity
• Create/Commit/Reveal/Resolve/Claim flows
• Market timers
• Private commit UI
• Photon reward triggers
• Pyth price display for crypto markets

Pages

• / → Market list
• /create → Create Market
• /market/[id] → Commit/Reveal/Resolve
• /profile → Photon XP display (coming soon)

💎 Photon Integration (XP + PAT Tokens)

GuessLab integrates Photon's identity & reward engine.

Rewards Triggered:

• Commit → XP (unrewarded event)
• Reveal → PAT tokens (rewarded event)
• Resolve → Achievement XP
• Completion streaks → Level rewards

Photon makes GuessLab sticky, competitive, and fun.

📡 Pyth Oracle Integration

Used for crypto markets to guarantee fairness.

Capabilities:

• Live BTC/ETH feeds
• Check market condition at reveal end
• Automatically set winner side
• Eliminates admin bias

This makes GuessLab trustless, not just decentralized.

📦 Tech Stack

Layer	Technologies
Frontend	Next.js, TypeScript, Tailwind, ShadCN
Smart Contract	Move (Aptos)
Wallet	Petra Wallet Adapter
Oracle	Pyth Aptos SDK
Gamification	Photon API
Network	Aptos Devnet

🛠 Setup Instructions

1. Clone repo

git clone https://github.com/Liejox/Guess-Lab.git
cd Guess-Lab

2. Install dependencies

npm install

3. Configure env

Create .env.local:

NEXT_PUBLIC_NETWORK=devnet
NEXT_PUBLIC_CONTRACT_ADDRESS=0xce3ebc6f453c5152f10be089a252c3703764daa0a0edb17c653f3a4820e134b3
NEXT_PUBLIC_PHOTON_API_URL=https://stage-api.getstan.app
NEXT_PUBLIC_PHOTON_API_KEY=YOUR_KEY

4. Start frontend

npm run dev

5. Deploy Move contract

aptos move publish --profile pred_market

🎯 User Flow

Step 1 — Create Market
Admin sets question + commit/reveal windows.

Step 2 — Commit Phase (Darkpool)
Users commit hashed predictions, completely private.

Step 3 — Reveal Phase
Users reveal actual bet + salt.
Market updates public totals.

Step 4 — Resolution
Admin or Pyth oracle resolves.

Step 5 — Claim Rewards
Winners receive payouts based on proportional stake.

Step 6 — Photon XP Rewards
Gamified progression, streaks, and PAT tokens.

🏆 Why GuessLab Beats Panana

Feature	Panana	GuessLab
Bet Privacy	❌ Public	✅ Darkpool Commit
Commit–Reveal	❌ No	✅ Yes
Whale Manipulation	❌ Possible	✅ Impossible
Oracle Support	❌ Limited	✅ Pyth Price Feeds
Gamification	❌ None	✅ Photon XP + PAT
Fairness	Medium	Very High

🚀 Roadmap

• ZK predictions (future upgrade)
• Social prediction rooms
• Group prediction pools
• Daily XP challenges
• On-chain leaderboards
• Multi-chain expansion

🔗 Links

• 🌐 Live Demo: https://guess-lab.vercel.app/
• Repository: https://github.com/Liejox/Guess-Lab
• Contract Explorer: https://explorer.aptoslabs.com/account/0xce3ebc6f453c5152f10be089a252c3703764daa0a0edb17c653f3a4820e134b3?network=devnet
• Photon SDK: https://photon.so

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Built with ❤️ on Aptos blockchain for IBW Hackathon