This project was developed by me and @neysixx in 48 hours during the Hacking Paris Hackathon organized by Chiliz Blockchain.
This is an MVP, not production-ready, and it does not reflect best development practices.
Raliz allows sponsors (sports teams) to launch raffles (contests) on the Chiliz blockchain. Users participate with their wallet to try to win exclusive prizes (jerseys, VIP tickets, NFTs, etc.).
A raffle can have multiple winners defined by the organizer. The process is transparent, auditable, and immutable thanks to the blockchain.
- ✅ Raffle creation by sponsors
- 💰 Paid participation in CHZ with fan token holding condition
- 🎫 Eligibility system: hold minimum 50 fan tokens from the sponsor
- 🎲 Random selection of multiple winners on-chain
- 🏆 Inter-team competition system: Fan Points + CHZ Leaderboard
- 🎁 Seasonal rewards: Airdrops for fans of the best teams
- 🔗 Easy integration on mobile and desktop
Raliz introduces a competitive dimension that transforms each participation into an act of engagement for your favorite team:
- 👥 Fan Points: Each participation = price in CHZ * 10 points for the fan
- 🏆 Team Leaderboard: Ranking based on total CHZ engaged on their completed raffles
- 🎁 Seasonal Rewards: Airdrops for fans of TOP 3 teams at the end of season according to the following distribution: 1st = 50% of the pool, 2nd = 25% of the pool, 3rd = 10% of the pool (15% for Raliz).
🔄 Points System:
- Participation → price in CHZ * 10 individual fan points
- CHZ Engaged → Cumulative for team leaderboard
🏆 Rankings:
- Individual Fan Leaderboard: Total personal points (future)
- Team CHZ Leaderboard: Total CHZ engaged on all completed raffles of the team
- Most Active Fans: Fans with the most participations per team (future)
🎁 End of Season Rewards:
- 🥇 TOP 1 Team: Airdrop 50% of the pool distributed among all team fans
- 🥈 TOP 2 Team: Airdrop 25% of the pool distributed among all team fans
- 🥉 TOP 3 Team: Airdrop 10% of the pool distributed among all team fans
- 🌟 MVP Fans: Top 10 individual fans receive an exclusive NFT (future)
Advantages:
- ✅ Loyalty: Fans engage for their team long-term
- ✅ Network effect: The more active fans a team has, the higher it climbs in ranking
- ✅ Healthy competition: Rivalry between teams drives more participation
- ✅ Tangible rewards: Real incentives for engagement
- ✅ Virality: Fans will recruit other fans to boost their team
Key metrics:
- Team Engagement Score: (Participations × Average fan points) + CHZ engaged
- Fan Loyalty Index: Number of consecutive raffles participated for the same team
- Cross-team Competition: Delta between TOP 3 teams in the leaderboard
| Element | Tech |
|---|---|
| Architecture | Monorepo (Turborepo) |
| Frontend | Next.js 15 + TypeScript |
| UI Components | Shadcn/ui + Tailwind CSS |
| Auth | Email authentication + Web3Auth |
| Database | PostgreSQL + Drizzle ORM |
| Blockchain | Chiliz Chain Testnet (EVM compatible) |
| Smart Contracts | Solidity + Hardhat |
| Payments | CHZ (native token) + Fan token condition |
| RNG | On-chain calculations |
| Competition | Off-chain calculations + Season snapshots |
raliz/
├── apps/
│ ├── app/ # User app (Next.js)
│ └── backoffice/ # Organizer backoffice (Next.js)
├── packages/
│ └── config/ # TS config
│ ├── contracts/ # Solidity smart contracts + Hardhat
│ ├── db/ # Drizzle schema + migrations
│ ├── ui/ # Shared Shadcn components
└── packages.json # Turborepo setup
- ✅ On-chain leaderboards with immutable snapshots
- ✅ Automatic rewards via smart contracts + timelock
- 🏆 Cross-season competitions + performance history
- 🎮 Achievements system + unlockable badges
- 📊 Advanced analytics: engagement prediction modeling
- 🤝 Team battles: Direct challenges between teams
- 💎 Staking competitions: Stake fan tokens to boost team
- 🎁 Dynamic rewards: Adaptive rewards based on season performance
- 🌍 Cross-chain expansion: Multi-blockchain competitions
📥 Collection:
- Participants pay in CHZ when participating in all raffles
- All funds are automatically collected in a common pool in the Raliz smart contract
- No organizer can directly access the funds
🏆 Team Rankings:
- Organizers (teams) are ranked by total CHZ amount collected via their raffles
- Only teams in the TOP 3 are eligible for redistribution (future)
- Ranking is based on fund collection performance
🔒 Security:
- Only the super admin (contract owner) can withdraw funds from the pool
- Organizers can only create raffles and manage participants
- Total transparency: all payments are tracked on-chain
- The draw is done by the super admin (contract owner) on-chain
💸 Targeted Redistribution:
- Super admin withdraws funds via
withdrawCHZ()from the common pool - Platform fees (2.5%) are automatically deducted
- Remaining funds are redistributed to participants who participated in raffles of TOP 3 teams (future)
- Only participants who supported the best teams receive rewards (future)