Canary

Early warning system for Bitcoin cold storage

Get it on umbrelOS

Version1.5.0

CategoryBitcoin

Source codePublic

Developed byschjonhaug 1 app

Submitted byschjonhaug 1 app

Compatible withumbrelOS 0.5 or later

A canary in the cold mine. When your bitcoins are in cold storage, you seldom check on them.

Canary acts as an early warning system that alerts you the moment your coins move, giving you immediate notification of any activity on your wallets.

Built with Rust and BDK, it provides real-time transaction intelligence with advanced pattern recognition (RBF fee bumping, CPFP acceleration) and instant multilingual notifications via ntfy.sh.

Set custom balance alerts (equal, less than, or more than) to monitor your holdings. Perfect for monitoring cold storage and Bitcoin holdings you don't actively use.

What's new

Version 1.5.0+last week

This release focuses on authentication fixes, UI enhancements, and performance improvements.

Key features and improvements:

Fixed self-hosted sign-in and sign-out functionality
Fixed auth token recovery and session validation
Added transaction explorer selection feature
Added dark mode support
Improved wallet transaction performance
Improved sync progress indicators
Improved mobile layouts and accessibility
Fixed transaction list layout issues
Fixed translated API error messages
Fixed recurring donation configuration

Full release notes can be found at https://github.com/schjonhaug/canary/releases

Version 1.4.0+2 months ago

Monitor individual Bitcoin addresses alongside HD wallets, with automatic transaction lookup via your local Mempool instance when installed on Umbrel. Added the ability to test your ntfy notification setup directly from the app.

Version 1.3.1+3 months ago

This update contains various bug fixes and improvements:

Fixed translation keys showing instead of localized content in notifications
Improved BTC amount formatting with locale-aware number display
Improved contact editing to preserve unchanged notification methods
Added Electrum connectivity checks to prevent wallet creation when the server is unavailable

Version 1.3.0+4 months ago

Added support for 8 new languages (Norwegian, Spanish, Portuguese, German, French, Japanese, Danish, Swedish) with full UI and notification translations. Improved contact modal UX and wallet syncing display.

Version 1.2.0+4 months ago

New wallet creation wizard based on well known hardware and software wallets, improved XPUB key format handling, and sample Bacon wallet for easy onboarding.

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