Privacy Policy

1. Information We Collect

When you create an account, we collect your name, email address, and country (Clerk handles authentication). When you subscribe, we collect the cryptocurrency transaction hash you submit so we can verify your payment on-chain — we never see your private keys, seed phrases, or wallet credentials. When you use on-chain features (locking in on tips, voting, daily check-ins), your auto-generated zkSYS smart-account address and the associated transactions are linked to your account.

2. Embedded Wallets

When you sign up for OddsForge, we may create an embedded blockchain wallet on your behalf to enable interaction with on-chain features on the zkSYS network. Your wallet address is linked to your OddsForge account. We manage wallet creation and key custody so you can interact with the blockchain seamlessly. You should not share your account credentials, as they provide access to your embedded wallet.

3. On-Chain Data

Certain data generated through your use of OddsForge is stored on the zkSYS blockchain. This includes prediction hashes, community votes, and achievement badges. On-chain data is publicly visible to anyone who queries the blockchain and is permanently recorded. OddsForge does not control the zkSYS blockchain and cannot modify or remove data once it has been committed on-chain. Please be mindful of this before using on-chain features.

4. How We Use Your Information

We use your information to:

• Provide and maintain your account and embedded wallet
• Process subscription payments
• Record prediction proofs and votes on the zkSYS blockchain
• Send you tips and notifications (if opted in)
• Improve our platform, predictions, and smart contracts
• Comply with legal requirements

5. Data Storage & Security

Your off-chain data is stored securely in our database with row-level security policies. All data is encrypted in transit (TLS) and at rest. We implement industry-standard security practices to protect your information. On-chain data is secured by the zkSYS blockchain's consensus mechanism and is inherently tamper-resistant.

6. Third-Party Services

We use the following third-party services that may process your data:

• Clerk — authentication and user management
• Neon — serverless PostgreSQL database hosting
• zkSYS Genesis — blockchain network for on-chain prediction proofs, votes, lockins, and badges
• Tron, BSC, Syscoin (UTXO + NEVM) — public blockchains used to verify subscription payments via tx hash lookup
• The Odds API, api-sports — sports fixtures, odds, and results
• Anthropic Claude — AI analysis layer for prediction reasoning

7. Cookies & Analytics

We use essential cookies for authentication and session management. We may use analytics tools to understand how users interact with our platform. You can disable non-essential cookies in your browser settings.

8. Data Sharing

We do NOT sell your personal data to third parties. We only share data with payment processors to complete transactions, with blockchain networks to execute on-chain operations, and with law enforcement if required by law.

9. Your Rights

You have the right to:

• Access the personal data we hold about you
• Request correction of inaccurate off-chain data
• Request deletion of your account and off-chain data
• Opt out of marketing communications
• Export your data in a portable format

10. Data You Cannot Delete

Due to the immutable nature of blockchain technology, certain data cannot be deleted or modified once recorded on the zkSYS network. This includes prediction proof hashes, community votes, achievement badges, and any soulbound tokens (SBTs) issued to your wallet. If you delete your OddsForge account, your off-chain data will be removed, but on-chain records will remain permanently on the blockchain. By using on-chain features, you acknowledge and accept this limitation.

11. Data Retention

We retain your off-chain data for as long as your account is active. If you delete your account, we will remove your personal off-chain data within 30 days. Anonymized statistics may be retained for platform analytics. On-chain data is retained permanently on the zkSYS blockchain and is outside our ability to delete.

12. Changes to This Policy

We may update this privacy policy from time to time. We will notify users of significant changes via email or platform notification.

13. Contact Us

For privacy-related inquiries, use the contact form on our Contact page. Replies arrive in your in-app message box.