1. Overview
Chancy is a privacy-first decentralized lottery protocol. We are committed to protecting your privacy and operate with minimal data collection principles.
✅ Privacy by Design: We collect NO personal information. World ID provides anonymous verification.
2. Information We Do NOT Collect
- Names or real-world identities
- Email addresses
- Phone numbers
- Physical addresses
- Government IDs
- Banking information
- IP addresses (when using World App)
3. Information Recorded On-Chain
The following information is publicly recorded on the World Chain blockchain:
- Wallet addresses that purchase tickets
- World ID nullifier hashes (anonymous identifiers)
- Transaction amounts and timestamps
- Winner wallet addresses
- Prize distributions
Note: This information is pseudonymous and publicly visible on the blockchain.
4. World ID Privacy
World ID provides privacy-preserving proof of personhood:
- Zero-knowledge proofs ensure anonymity
- No biometric data is stored or transmitted
- Nullifier hashes prevent double-entry without revealing identity
- World ID privacy policy applies to their services
5. Technical Data
When accessing our web interface, standard web server logs may record:
- Browser type and version
- Device type (mobile/desktop)
- Referring website
- Pages visited on our site
- Timestamps of visits
This data is aggregated and not linked to individuals.
6. Cookies and Tracking
We use minimal, essential cookies only:
- Session management (temporary)
- User preferences (dark/light mode)
- No third-party tracking cookies
- No advertising cookies
- No analytics that identify individuals
7. Data Sharing
We do NOT share, sell, rent, or trade any user information because we don't collect it.
The only data sharing that occurs:
- Public blockchain transactions (inherent to blockchain technology)
- Legal compliance if required by valid court order (limited to blockchain data)
8. Data Security
Security measures include:
- Smart contracts audited for security
- HTTPS encryption for web traffic
- No centralized database to breach
- Decentralized architecture
- Open-source code for transparency
9. Your Rights
Due to our privacy-first design:
- Right to Access: All your data is on the public blockchain
- Right to Deletion: We have no personal data to delete
- Right to Portability: Blockchain data is already portable
- Right to Correction: Blockchain data is immutable
10. Children's Privacy
Chancy is not intended for anyone under 18 years of age. We do not knowingly collect information from children. Age verification is enforced through our Terms of Service.
11. International Users
Chancy operates on World Chain, a global blockchain. Your interactions are governed by the blockchain's decentralized nature, not any specific country's data localization requirements.
12. Changes to Privacy Policy
We may update this policy. Changes will be posted on this page with an updated revision date. Continued use constitutes acceptance of changes.
13. Contact Information
For privacy questions or concerns:
- GitHub: github.com/chancy-lottery
- Protocol Documentation: docs.chancy.app
🔒 Your privacy is protected by design, not by policy.