Privacy Policy for Bitcoin Fee Tracker

Last updated: September 2025

Overview

Bitcoin Fee Tracker (“the Extension”) is committed to protecting your privacy. This privacy policy explains what information we collect, how we use it, and your rights regarding your data.

Data Collection

What We DON’T Collect

  • Personal information (name, email, etc.)
  • Browsing history
  • Bitcoin addresses or transaction data
  • Analytics or usage statistics
  • Any form of user tracking

What We Store Locally

All data is stored locally on your device using Chrome’s storage API:

  • Your selected fee priority preference (Low/Medium/High)
  • Badge visibility settings (show/hide fee information on browser toolbar)
  • Alert threshold settings for fee notifications
  • Notification preferences (enabled/disabled)
  • Cached Bitcoin fee data for performance
  • Last update timestamp
  • Anti-spam notification state to prevent duplicate alerts

This data never leaves your device and is not transmitted to any servers.

Third-Party Services

The Extension uses the following third-party service:

  • mempool.space API: To fetch real-time Bitcoin network fee data
    • We only request public fee information
    • No personal data is sent to mempool.space
    • Their privacy policy: https://mempool.space/privacy

Permissions Usage

The Extension requires certain permissions to function:

  • Storage: Save your preferences and settings locally on your device
  • Notifications: Send alerts when Bitcoin network fees drop below your threshold
  • Alarms: Schedule automatic fee updates every 30 seconds
  • Tabs: Open extension settings pages and external links (like mempool.space)
  • Host permissions (mempool.space): Fetch real-time Bitcoin fee data from the public API

No permission is used to collect, track, or transmit personal information.

Data Security

  • All data is stored locally on your device
  • No data transmission to external servers (except API calls to mempool.space)
  • No authentication or accounts required
  • You can clear all data by uninstalling the extension

Your Rights

You have the right to:

  • Access your data (via Chrome’s extension storage)
  • Delete your data (by clearing extension data or uninstalling)
  • Opt-out of notifications (via extension settings)
  • Use the extension without providing any personal information

Children’s Privacy

The Extension does not knowingly collect any information from children under 13 years of age.

Changes to This Policy

We may update this privacy policy from time to time. Any changes will be reflected in the “Last updated” date above.

Open Source

This extension is open source. You can review the code at: https://github.com/seandong/bitcoin-fee-tracker

Contact

If you have questions about this privacy policy or the extension, please contact: Sean Dong - sindon@gmail.com

Compliance

This extension complies with:

  • Chrome Web Store Developer Program Policies
  • General Data Protection Regulation (GDPR)
  • California Consumer Privacy Act (CCPA)

By using Bitcoin Fee Tracker, you agree to this privacy policy.