🔒 Privacy Policy

Effective Date: January 1, 2025

Last Updated: January 1, 2025

1. Introduction

XPRV OU ("we," "our," or "us") respects your privacy and is committed to protecting your personal data. This Privacy Policy explains how we collect, use, and safeguard your information when you use the StampHash platform.

2. Data Controller

3. Information We Collect

3.1 Evidence Data

• Files: Photos, videos, and documents you choose to notarize
• Cryptographic Hashes: SHA-256 hashes of your evidence files
• Metadata: File creation dates, sizes, and technical specifications

3.2 Location Information (Optional)

• GPS Coordinates: Only if you grant permission
• Accuracy Data: Precision level of location services
• Timestamp: When location was captured

3.3 Device Information

• Browser Type: User agent string
• Screen Resolution: Display dimensions
• Language Settings: Browser language preferences
• Timezone: Local timezone information

3.4 Technical Data

• IP Address: For security and fraud prevention
• Transaction IDs: Blockchain transaction references
• API Usage: Service interaction logs

4. How We Use Your Information

We use your information solely for the following purposes:

• Evidence Notarization: Creating immutable blockchain records
• Service Delivery: Providing secure evidence collection
• Security: Preventing fraud and unauthorized access
• Legal Compliance: Meeting regulatory requirements

5. Data Storage and Security

5.1 Local Storage

• Evidence files are stored locally in your browser
• You control when to upload evidence for notarization
• Local data can be deleted at any time

5.2 Blockchain Storage

• Only cryptographic hashes are stored on blockchain
• Original files are never stored on blockchain
• Blockchain records are permanent and immutable

5.3 Security Measures

• End-to-end encryption for data transmission
• Secure API authentication
• Regular security audits and monitoring

6. Your Rights Under GDPR

If you are a European Union resident, you have the following rights:

• Right to Access: Request copies of your personal data
• Right to Rectification: Correct inaccurate information
• Right to Erasure: Request deletion of your data
• Right to Restrict Processing: Limit how we use your data
• Right to Data Portability: Transfer your data to another service
• Right to Object: Oppose certain types of processing

7. Data Retention

• Local Data: Retained until you delete it
• Blockchain Data: Permanent (cannot be deleted)
• Server Logs: Retained for 90 days for security purposes
• Payment Data: Retained as required by financial regulations

8. International Data Transfers

Your data may be processed in countries outside the European Union. We ensure adequate protection through:

• Standard Contractual Clauses (SCCs)
• Adequacy decisions by the European Commission
• Your explicit consent where required

9. Third-Party Services

We use the following third-party services:

• Stripe: Payment processing (for mainnet transactions)
• Blockchain Networks: Bitcoin and Zcash for evidence notarization

10. Contact Us

For privacy-related questions or to exercise your rights, please contact us through the channels provided in our Terms of Service.

📋 Terms of Service

Effective Date: January 1, 2025

Last Updated: January 1, 2025

1. Agreement to Terms

By accessing and using the StampHash platform ("Service"), you agree to be bound by these Terms of Service ("Terms"). If you disagree with any part of these terms, you may not access the Service.

2. Service Provider

3. Description of Service

StampHash provides blockchain-based evidence notarization services, allowing users to:

• Capture and secure digital evidence (photos, videos, documents)
• Generate cryptographic hashes of evidence files
• Create immutable blockchain records on Bitcoin and Zcash networks
• Export evidence packages for legal or compliance purposes

4. User Responsibilities

4.1 Acceptable Use

You agree to use the Service only for lawful purposes and in accordance with these Terms. You must not:

• Upload illegal, harmful, or offensive content
• Violate any applicable laws or regulations
• Infringe on intellectual property rights of others
• Attempt to compromise the security of the Service
• Use the Service for fraudulent or deceptive purposes

4.2 Content Responsibility

• You are solely responsible for all content you submit
• You warrant that you have the right to notarize submitted content
• You understand that blockchain records are permanent and immutable

5. Payment Terms

5.1 Pricing

• Testnet Transactions: Free for testing and development
• Mainnet Transactions: $100 USD per notarization

5.2 Payment Processing

• Mainnet payments are processed through Stripe
• All payments must be completed before blockchain notarization
• Payments are non-refundable once blockchain transactions are confirmed

6. Blockchain Considerations

6.1 Immutability

• Blockchain records cannot be modified or deleted
• Transaction fees are set by blockchain networks, not XPRV OU
• Confirmation times depend on network conditions

6.2 Network Risks

• Blockchain networks may experience delays or congestion
• We cannot guarantee specific confirmation times
• Network forks or changes may affect accessibility

7. Privacy and Data Protection

Your privacy is important to us. Please review our Privacy Policy, which also governs your use of the Service, to understand our practices.

8. Intellectual Property

8.1 Service Ownership

• The StampHash platform and technology are owned by XPRV OU
• All trademarks and service marks are property of their respective owners

8.2 User Content

• You retain ownership of your submitted content
• You grant us a limited license to process and notarize your content
• This license terminates when you delete your content

9. Disclaimers

9.1 Service Availability

The Service is provided "as is" without warranties of any kind. We do not guarantee:

• Uninterrupted availability of the Service
• Error-free operation
• Compatibility with all devices or browsers
• Specific blockchain confirmation times

9.2 Legal Advice

While our managing member is licensed to practice law in the United States, the StampHash Service does not constitute legal advice. Users should consult with qualified legal counsel for legal questions.

10. Limitation of Liability

To the maximum extent permitted by law, XPRV OU shall not be liable for:

• Indirect, incidental, or consequential damages
• Loss of profits, data, or business opportunities
• Damages exceeding the amount paid for the Service
• Issues arising from blockchain network operations

11. Indemnification

You agree to indemnify and hold harmless XPRV OU from any claims, damages, or costs arising from:

• Your use of the Service
• Violation of these Terms
• Infringement of third-party rights
• Your submitted content

12. Termination

12.1 Termination by You

• You may stop using the Service at any time
• You can delete your local data through the platform
• Blockchain records cannot be removed after creation

12.2 Termination by Us

We may terminate or suspend your access if you:

• Violate these Terms
• Engage in fraudulent activity
• Pose a security risk to the Service

13. Governing Law

These Terms are governed by the laws of Estonia and the applicable laws of the United States where James S. Burrell, II is licensed to practice.

14. Dispute Resolution

Any disputes arising from these Terms or the Service shall be resolved through:

• Good faith negotiation between the parties
• Mediation if negotiation fails
• Binding arbitration as a final resort

15. Changes to Terms

We reserve the right to modify these Terms at any time. We will notify users of significant changes through the platform. Continued use constitutes acceptance of updated Terms.

16. Contact Information

For questions about these Terms, please contact us through the information provided in the About Us section.

ℹ️ About Us

🏢 XPRV OÜ

XPRV OÜ is a digital consulting company established as an Estonian private limited company (Osaühing) dedicated to building innovative tools that help humans navigate an uncertain future. We specialize in blockchain technology, cryptographic security, and digital evidence preservation.

🎯 Our Mission

In an increasingly digital world, the ability to prove the authenticity and integrity of information has become crucial. We develop tools that empower individuals and organizations to create verifiable, tamper-proof records using cutting-edge blockchain technology.

🔧 What We Do

Blockchain Solutions

• Digital evidence notarization and timestamping
• Cryptographic proof of existence systems
• Immutable record keeping solutions
• Smart contract development and auditing

Digital Consulting

• Blockchain integration strategy
• Cryptographic security assessments
• Digital transformation consulting
• Compliance and regulatory guidance

👨‍💼 Leadership

🌍 Our Vision

We envision a future where digital authenticity is not just possible but accessible to everyone. By combining legal expertise with cutting-edge technology, we're building the foundation for a more transparent and trustworthy digital world.

🔐 StampHash Platform

StampHash represents the culmination of our expertise in blockchain technology and legal compliance. This platform provides:

Technical Innovation

• Multi-Blockchain Support: Bitcoin and Zcash* (*comming soon) integration
• Advanced Cryptography: SHA-256 hashing and secure key management
• Privacy-First Design: Local storage with optional cloud features
• Cross-Platform Compatibility: Works on desktop and mobile devices

Legal Compliance

• GDPR Compliance: Full European data protection compliance
• Evidence Standards: Meets legal requirements for digital evidence
• International Standards: Compatible with global legal frameworks
• Audit Trail: Complete transaction and access logging

🛡️ Security & Trust

Security and trust are fundamental to everything we do:

• Open Source Commitment: Core cryptographic functions are open for audit
• No Vendor Lock-in: Your data remains under your control
• Blockchain Immutability: Records cannot be altered or deleted
• Professional Standards: Developed under legal and technical best practices

🌟 Why Choose XPRV OU?

Unique Advantages

• Legal + Technical Expertise: Rare combination of law and blockchain technology
• Estonian Innovation Hub: Based in one of Europe's most digital-forward countries
• International Perspective: US legal training with European operational base
• Future-Focused: Building solutions for tomorrow's challenges today

Core Values

• Transparency: Open about our methods and limitations
• Privacy: Your data belongs to you, not to us
• Innovation: Constantly pushing the boundaries of what's possible
• Accessibility: Making advanced technology usable by everyone

📞 Get in Touch

Interested in working with XPRV OU or learning more about our services?

For StampHash Support:

• Technical issues and platform questions
• Integration assistance and custom solutions
• Compliance and legal questions

For Consulting Services:

• Blockchain strategy and implementation
• Legal compliance and regulatory guidance
• Custom development projects
• Technology audits and assessments

Contact information is available through our official channels. We're always happy to discuss how blockchain technology can help solve your challenges.

🚀 The Future

We're just getting started. XPRV OU is committed to continuing innovation in blockchain technology, always with an eye toward practical applications that make the digital world more secure and trustworthy for everyone.

Join us in building a more transparent and secure digital future.