This application allows users to monitor Bitcoin cold storage wallet balances in an easy to use web application. Doing this eliminates the trouble of setting up desktop application software, which can be troublesome to non technical users. Blockchain Watchdog users can also add "watch notification flags" to any wallet, and then be notified when the flag condition occurs. This functionality is similar to how traditional payment systems (i.e. credit / debit cards) alert the user when activity occurs on their account.