NoTamperData Google Forms Add-on

Overview

NoTamperData provides blockchain-based verification for Google Forms responses by generating cryptographic hashes of form submissions and storing them for future verification. This ensures data integrity without compromising privacy - only hashes are stored, never the actual form data.

Features

• Privacy-Preserving: Only SHA-256 hashes leave Google's ecosystem
• Automatic Processing: Enable once, verify always
• Simple Interface: Clean, intuitive sidebar UI
• Instant Verification: Test with existing responses immediately

Installation

For Users

1. Open your Google Form
2. Click Add-ons → Get add-ons
3. Search for "NoTamperData"
4. Click Install and follow the authorization prompts

For Developers

1. Install Google Apps Script CLI:

npm install -g @google/clasp

2. Login to Google:

clasp login

3. Clone and push the code:

clasp clone --scriptId [YOUR_SCRIPT_ID]
# Copy the add-on files to your local directory
clasp push

Usage

1. Open your Google Form
2. Click Add-ons → NoTamperData → Open
3. Click "Enable Automatic Verification"
4. Submit a test response to verify the system is working

File Structure

├── Code.js           # Main entry point and core functions
├── ApiClient.js      # API communication layer
├── Sidebar.html      # User interface
├── appsscript.json   # Add-on configuration
└── README.md         # This file

API Endpoints

The add-on communicates with the following endpoints:

• POST /api/storehash - Store hash and metadata
• GET /api/health - Check API availability (optional)

Privacy & Security

• No Data Storage: The add-on never stores form response data
• Hashing Only: Uses SHA-256 to create one-way hashes
• Minimal Permissions: Only requests necessary OAuth scopes
• Open Source: All code is transparent and auditable

Testing

1. Create a test form with various question types
2. Install the add-on
3. Submit test responses
4. Use the "Test With Latest Response" button to verify

Deployment Checklist

Before submitting to Google Workspace Marketplace:

• Update API endpoint in Code.js to production URL
• Ensure privacy policy is accessible at https://NoTamperData.vercel.app/privacy
• Ensure terms of service is accessible at https://NoTamperData.vercel.app/terms
• Test all functionality with production API
• Create app listing assets (screenshots, descriptions)
• Complete OAuth consent screen configuration

Support

• Documentation: https://NoTamperData.vercel.app/docs
• Support: https://NoTamperData.vercel.app/support
• Issues: https://github.com/NoTamperData/NoTamperData-addon/issues

License

MIT License - See LICENSE file for details