Privacy Policy

Last updated: October 2026

DataBrushing.AI (解智能資料梳理股份有限公司, hereinafter "we," "us," or "the Company") takes the security of your personal data seriously. This policy explains how we collect, use, and protect information you provide when using the UEChain platform and related services.

1. Information We Collect

To provide preservation, verification, and account management services, we may collect the following personal data:

• Name, organization name, and job title
• Email address
• Phone number (optional)
• Preservation activity records (hash values, timestamps, evidence types — raw data is never collected)

Raw data always remains in the data owner's environment. UEChain records only verifiable evidence summaries: hash values, digital signatures, timestamps, and relational metadata.

2. Log Data

When you visit the platform, the following information is recorded automatically:

• IP address
• Browser type and version
• Pages accessed, dates, and times
• Session duration and interaction patterns

This data is used solely for system performance analysis, security monitoring, and service improvement. It is not used for personal identification.

3. Cookies

We use cookies and similar technologies to maintain session state, remember preferences, and gather aggregate usage statistics. You may refuse or delete cookies through your browser settings, though some features (such as persistent login) may not function correctly as a result.

Inquiry forms are collected via Google Forms and stored in our company Google Workspace account, used only to respond to your inquiry.

4. How We Use Your Information

Collected information is used for the following purposes:

• Providing, maintaining, and improving the UEChain platform
• Sending service notifications, preservation confirmations, and important announcements
• Responding to support requests and inquiries
• Conducting security audits and detecting abnormal activity
• Meeting legal and regulatory obligations

5. Third-Party Service Providers

To improve service quality, we may engage the following types of third-party vendors to assist with data processing:

• Cloud infrastructure and operations (e.g., AWS)
• Email delivery services
• Website analytics

These third parties may only use your information within the scope authorized by us, and are bound by strict confidentiality obligations.

6. Information Security

We employ the following security measures to protect your data:

• TLS encryption for all data in transit
• Critical key material protected by FIPS 140-3 Level 3-validated HSMs
• Access controls and least-privilege principles
• Regular security audits and penetration testing

Despite our best efforts, no internet transmission is guaranteed 100% secure.

7. Data Retention

We retain personal data for as long as necessary to provide services or as required by applicable law. When data is no longer needed, it is securely destroyed or anonymized. On-chain preservation records are immutable by design and remain on-chain permanently.

8. External Links

The platform may contain links to third-party websites. We do not control the content or privacy practices of those sites. We recommend reviewing their policies before proceeding.

9. Children's Privacy

The platform and its services are not designed for, and do not knowingly collect data from, individuals under the age of 18. If you believe a minor has provided personal information, please contact us immediately.

10. Your Rights

Depending on your jurisdiction, you may have the right to:

• Access the personal data we hold about you
• Request a copy of your data
• Request correction of inaccurate data
• Request deletion of your data
• Request that we stop processing your data

To exercise any of these rights, please contact us using the details below.

11. Policy Updates

We reserve the right to update this policy at any time. Changes will be posted on this page with an updated "Last updated" date. Significant changes will be communicated by email to registered users. We recommend reviewing this page periodically.

12. Contact Us

If you have questions about this Privacy Policy or wish to exercise your data rights, please contact us: