Privacy Policy

EraWeb3Systems ("we", "our", or "us") respects the privacy of users ("you" or "your") of the Smart Contract Audit Result Viewer app ("the App"). This Privacy Policy explains how we handle information when you use our App.

1. Information We Collect

1.1 Personal Information

The App does not collect, store, or transmit any personally identifiable information such as names, email addresses, phone numbers, or wallet private keys.

1.2 Automatically Collected Information

The App may use the following information to provide its functionality:

• Smart Contract Addresses - Addresses entered for audit (transmitted encrypted)
• Network Information - Selected blockchain network
• Device Information - For app performance improvement (anonymized)

1.3 Locally Stored Data

The App stores the following information only on your device:

• Audit history (contract addresses, audit results, timestamps)
• User preferences (selected network, display settings, etc.)
• Bookmarked contracts

This information is not transmitted to external servers and is automatically deleted when the app is uninstalled.

1.4 Camera Usage

The App may use the camera to scan QR codes for contract addresses. Images captured by the camera are used only for QR code scanning and are not stored or transmitted.

2. How We Use Information

The collected information is used only for the following purposes:

• Providing smart contract audit functionality
• Displaying audit results and generating reports
• Improving app performance and features
• Enhancing user experience
• Diagnosing and resolving technical issues

3. Third-Party Services

3.1 Alchemy API

The App uses Alchemy API to retrieve blockchain data.

Information sent to Alchemy API:

• Smart contract addresses (public information)
• Network identifiers
• API request metadata

Alchemy API communication is encrypted via HTTPS, and no personally identifiable information is transmitted.

For more details, please refer to Alchemy's Privacy Policy.

3.2 Google ML Kit

The App uses Google ML Kit for QR code scanning functionality. ML Kit processes data on-device, and scanned data is not transmitted externally.

4. Data Security

We implement the following security measures to protect user information:

• All external communications are encrypted via HTTPS
• Local data is stored with encryption
• No collection or storage of sensitive information like private keys
• Regular security updates

5. About Blockchain Data

Smart contract information displayed in the App is based on publicly available blockchain data. This information is accessible to anyone and does not constitute personal information.

6. Children's Privacy

The App is not intended for children under 13 years of age. We do not intentionally collect personal information from children under 13.

7. Your Rights

You have the following rights:

• Access to Data - You can view your audit history within the app
• Data Deletion - Delete history from within the app or uninstall the app to remove all local data
• Camera Access Control - You can disable camera access from device settings

8. Required Permissions

The App requires the following permissions:

• INTERNET - Required for retrieving blockchain data
• ACCESS_NETWORK_STATE - Required for checking network connectivity
• CAMERA - Required for QR code scanning (optional)

9. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any significant changes through in-app notifications or by updating this page.

10. Disclaimer

The App is for informational purposes only and is not investment advice. The displayed audit results are reference information, and users are solely responsible for their investment decisions.

11. Contact Us

If you have any questions, comments, or requests regarding this Privacy Policy, please contact us at:

12. Governing Law

This Privacy Policy is governed by and construed in accordance with the laws of Japan.

Last Updated: June 16, 2025