https://bitref.com/
BitRef : Check Bitcoin Address Balance (Wallet Lookup)
Instantly check the balance of any Bitcoin address and view transactions in a clean, easy-to-read format. No signup required — free to use!
check bitcoin addressbitrefbalancewalletlookup
https://addons.opera.com/en/extensions/details/bitref/
BitRef extension - Opera add-ons
BitRef will help you view the current balance of any Bitcoin address. Just type: "btc [space or tab] bitcoin_address" in Opera's address bar. This is the...
bitrefextensionoperaaddons