Privacy Policy for MarvelX Extension

A. Wallet Data

We may collect and store the following data locally on your device:

• Wallet Addresses: Your Solana wallet addresses.
• Public Keys: Your wallet's public keys, used for cryptographic operations.
• Transaction Data: Temporarily processed during wallet operations (e.g., creating, signing, and broadcasting transactions).

B. What We Do NOT Collect

We are built on a philosophy of minimal data collection and do not collect, store, or transmit the following:

• Personal identification information (e.g., name, email, phone number).
• Browsing history or website data.
• Analytics or tracking data (e.g., usage patterns, behavioral data).
• Any data that personally identifies you.

A. Local Storage Only

• All wallet data is stored exclusively on your device using browser storage mechanisms.
• No data is transmitted to or stored on our servers, nor is any cloud storage or external databases used.
• The data remains under your complete control.

B. Storage Mechanisms

• Browser extension storage APIs (e.g., chrome.storage.local).
• Data is stored using Encrypted storage that incorporates post-quantum cryptography.
• Implementation uses a Hybrid wallet architecture for enhanced security.

A. Primary Purposes

We use the data collected locally solely for the following purposes:

• Wallet Functionality: To enable secure interaction with the Solana blockchain.
• Transaction Signing: To process and digitally sign blockchain transactions on your device.
• Key Management: To securely generate, manage, and store cryptographic keys.
• Security: To implement and maintain post-quantum cryptographic protection.

B. Technical Operations

• RPC communication with public or user-specified Solana blockchain networks.
• Cryptographic operations necessary for wallet security.
• Transaction processing and validation.

A. Blockchain RPC Providers

• We communicate with Solana RPC providers (Remote Procedure Call) to interact with the blockchain (e.g., query balances, submit transactions).
• This communication is essential for the wallet's functionality.
• No personal data is shared with RPC providers. Only transaction data and necessary blockchain queries are transmitted to facilitate blockchain interaction.

B. No Other Third-Party Sharing

We do not share your data with any other third parties. This includes:

• No marketing or advertising partners.
• No analytics services.
• No data brokers or external data-processing services.

A. Cryptographic Protection

We prioritize security through:

• Post-Quantum Cryptography implementation for future-proof security.
• Advanced encryption for all stored wallet data.
• Secure key generation and management processes.

B. Security Measures

• Local-only data storage, minimizing exposure to network threats.
• No network transmission of sensitive wallet data (e.g., seed phrases, private keys).
• Regular security updates and patches.
• Adherence to secure coding practices.

A. Data Control

As your data is stored locally, you maintain complete control:

• Access: You can access and view your wallet data at any time through the extension.
• Export: You can export your wallet data (e.g., private keys, seed phrase) at any time.
• Deletion: You can delete your wallet data immediately by uninstalling the Extension.
• No Recovery: Please note that because we do not store your data, no data recovery is possible once you delete your wallet or uninstall the extension.

B. Privacy Rights

You maintain the following rights regarding your local data:

• Right to access your data.
• Right to delete your data.
• Right to data portability.
• Right to withdraw consent (by ceasing use of the Extension).

A. Post-Quantum Cryptography

• Implementation of quantum-resistant cryptographic algorithms.
• Protection against future quantum computing threats.
• Enhanced security for all wallet operations.

B. Hybrid Wallet Architecture

• Combines traditional and post-quantum cryptographic methods.
• Designed for a seamless user experience with enhanced, future-proof security.

C. Browser Extension Storage

• Secure use of browser storage APIs (e.g., local storage, indexedDB).
• Robustly encrypted data storage to prevent unauthorized access.
• Strict adherence to the principle of no external data transmission.