WritingProof Privacy Policy

Last updated: May 20, 2026

Overview

WritingProof is a Google Docs™ add-on that tracks writing sessions to help users prove their documents were written by a human. We are committed to protecting your privacy.

Data We Collect

• Your Google account email address (used as author identification in reports)
• Writing session data: timestamps, character counts, typing and paste statistics
• Document metadata: document title and ID

How We Use Your Data

• All data is stored locally in your Google Document's properties
• Session reports are saved to your personal Google Drive™
• We do not collect, transmit, or store any data on external servers
• We do not read or store the actual content of your documents
• We do not share your data with any third parties

Data Storage

All WritingProof data is stored exclusively in:

• Your Google Document's properties (session tracking data)
• Your Google Drive™ (proof reports in JSON format)

You have full control over your data and can delete it at any time using the "Reset All Data" option in the add-on menu.

Permissions

WritingProof requests the following permissions:

• Google Docs™: To monitor document changes for writing session tracking
• Google Drive™: To save proof reports to your personal Drive
• Email: To identify you as the document author in reports
• Script Storage: To save session data within your document

Contact

If you have any questions about this privacy policy, please contact us at: mursideaki@gmail.com

Data Protection Mechanisms

WritingProof implements the following measures to protect your data:

• Local storage only: All session data is stored exclusively in your Google Document's properties and your personal Google Drive™. No data is transmitted to external servers.
• Cryptographic integrity: All proof reports are protected with SHA-256 cryptographic hash chains, ensuring data cannot be tampered with without detection.
• Minimal data collection: WritingProof only collects writing metadata (timestamps, character counts, typing statistics). The actual content of your documents is never read or stored.
• Access control: Proof reports saved to Google Drive™ are only accessible to you. Files are stored in your personal Drive under your own Google account.
• OAuth security: WritingProof uses Google's OAuth 2.0 protocol for authentication. We never store or have access to your Google account credentials.
• No third-party sharing: Your data is never shared with, sold to, or accessed by any third parties.

Google Docs™, Google Drive™, and Google Workspace™ are trademarks of Google LLC.