Overview
Bitcoin Balance Checker is designed to work without user accounts, analytics, advertising trackers, or a proprietary backend. This policy explains what information is processed when you use the extension.
Information processed
When you check a Bitcoin address, that public address is sent directly to the Blockstream Esplora API to retrieve public blockchain information. The extension also contacts the CoinGecko API to obtain the BTC/USD market price.
Bitcoin addresses are public blockchain identifiers. However, you should avoid entering information that you consider sensitive.
Local storage
The extension uses Chrome’s local storage to keep up to ten recently checked addresses, a temporary context-menu selection, and a short-lived BTC price cache. This information remains on your device and can be removed by clearing the extension history, clearing extension data, or uninstalling the extension.
Data we do not collect
- We do not create user accounts.
- We do not collect names, email addresses, passwords, or payment details.
- We do not use analytics, advertising cookies, or tracking pixels.
- We do not sell or transfer personal data.
Third-party services
Requests are made to Blockstream for public Bitcoin address data and to CoinGecko for market-price data. Those services may process technical information such as your IP address under their own privacy policies. If you follow an optional donation link, the payment provider’s separate terms and privacy policy apply.
Permissions
The extension requests Chrome permissions for local storage, the right-click context menu, and the active tab. Host permissions are limited to Blockstream and CoinGecko endpoints required for its core features.
Children’s privacy
The extension is not directed to children and does not knowingly collect personal information from children.
Changes to this policy
This policy may be updated when the extension’s functionality or legal requirements change. The effective date above will be revised when an update is published.
Contact
For privacy questions, email support@50.ci.