Privacy Policy

Last updated: February 13, 2026

1. Introduction

Happy Racing ("快乐赛车", "we", "our", or "us") is a mobile racing game that integrates with the Solana blockchain. This Privacy Policy explains how we collect, use, and protect your information when you use our application.

2. Information We Collect

2.1 Blockchain Data

When you connect your Solana wallet (e.g., Phantom), we access your public wallet address. This is publicly available on the Solana blockchain and is used to identify your game account.

2.2 Game Data

We collect and store the following game-related data on the Solana blockchain:

• Game scores and leaderboard rankings
• Anti-cheat game state hashes
• USDC recharge transaction records

2.3 Device Data

We do not collect device identifiers, location data, or personal information beyond what is described above.

3. How We Use Your Information

• To provide and maintain the game service
• To manage your game account and scores
• To display leaderboard rankings
• To process USDC point recharges
• To detect and prevent cheating

4. Data Storage

Game data is stored on the Solana blockchain, which is a public, decentralized ledger. Data stored on the blockchain is permanent and cannot be deleted. No personal data is stored on our servers.

5. Third-Party Services

Our app interacts with:

• Phantom Wallet: For wallet connection and transaction signing
• Solana Blockchain: For on-chain data storage and transactions

These services have their own privacy policies. We encourage you to review them.

6. Children's Privacy

Our app is not directed to children under 13. We do not knowingly collect information from children under 13.

7. Security

We do not store your private keys or seed phrases. All transaction signing is performed through your wallet application (Phantom). We implement anti-cheat measures to ensure fair gameplay.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last updated" date.

9. Contact Us

If you have questions about this Privacy Policy, please contact us at: gaoxudong333@gmail.com