Last updated: April 2026
1. Information We Collect
Account data: email address (via Google, Apple, or email login through Privy).
Wallet addresses: Solana and/or XRP addresses you connect for deposits.
Activity data: predictions placed, amounts, results, and timestamps.
Device data: browser type, push notification subscriptions.
2. How We Use Your Data
- Operate your account and process predictions
- Credit deposits and process withdrawals
- Send notifications about prediction results
- Generate leaderboard rankings
- Prevent fraud and abuse
- Improve the Service
3. Data Sharing
We do not sell your personal data. We share data only with:
- Privy: authentication provider
- Supabase: database hosting
- Vercel: application hosting
- CoinGecko: price data (no user data shared)
Your username and prediction history are visible on the public leaderboard.
4. Data Security
We use encryption in transit (HTTPS), secure authentication (Privy), and access controls on our database. Wallet private keys are never stored on our servers.
5. Data Retention
Account data is retained while your account is active. You can request account deletion through the Settings page or by contacting us. Transaction history may be retained for legal compliance.
6. Cookies
We use essential cookies for authentication and session management. No third-party tracking cookies are used.
7. Your Rights
You have the right to access, correct, or delete your personal data. Contact us at hello@nostradameme.com to exercise these rights.
8. Changes
We may update this policy at any time. We will notify you of significant changes via email or in-app notification.
9. Contact
For privacy-related questions: hello@nostradameme.com