Last updated: December 2025
BlockSTD is committed to protecting your privacy and giving you complete control over your personal health information. This Privacy Policy explains how we collect, use, and protect your information.
Our Privacy Principles
- User Control: You own and control all your health data
- Minimal Collection: We only collect what's necessary
- No Data Selling: We never sell or monetize personal data
- Transparency: Clear communication about data practices
- Security First: Advanced encryption and blockchain protection
Information We Collect
Health Records
When you use BlockSTD, we process health information provided by licensed healthcare providers. This data is:
- Encrypted before blockchain storage
- Only accessible with your explicit consent
- Never viewable by BlockSTD staff
- Controlled entirely by you
Contact Information
We collect email addresses for:
- Account creation and verification
- Service updates and notifications
- Mailing list subscriptions (optional)
Technical Information
We collect minimal technical data to ensure service functionality:
- Blockchain transaction records (publicly visible but anonymized)
- Basic usage analytics (aggregated and anonymized)
- Error logs for service improvement
How We Use Your Information
- Service Delivery: Providing verified health record services
- Security: Protecting against fraud and unauthorized access
- Communication: Sending important service updates
- Improvement: Enhancing our platform (using anonymized data only)
Data Sharing
We never share, sell, or monetize your personal data.
Your health information is only shared when:
- You explicitly authorize sharing through our platform
- Required by law (we will notify you if legally possible)
- Necessary to protect safety (in extreme circumstances)
Blockchain and Decentralization
BlockSTD uses blockchain technology to ensure:
- Immutability: Records cannot be altered or deleted
- Decentralization: No single point of control or failure
- Privacy: Advanced cryptographic protection
- User Control: You hold the keys to your data
Your Rights
You have the right to:
- Access all your personal data
- Control who can view your health records
- Delete your account and associated data
- Opt out of non-essential communications
- Request data portability
- Lodge complaints with relevant authorities
Security Measures
- End-to-end encryption for all health data
- Blockchain-based immutable storage
- Regular security audits and penetration testing
- Minimal data retention policies
- Secure development practices
Contact Us
For privacy-related questions or to exercise your rights:
Changes to This Policy
We may update this Privacy Policy to reflect changes in our practices or legal requirements. We will notify users of significant changes via email and update the "Last updated" date above.