Thank you Mocacinno,
so it works just for bitcoins ?
or if i want to make verge monero or other currency i have always have to go on their own blockchain
or it exist an application or place where we can put all the number of wallet of all the coins we have and he give us the balance ?
Mille grazie
Well, if you're making a monero paper wallet, you're right, you'll have to look for a monero block explorer... There are plenty of altcoins that have a free online block explorer available.
There are websites around on which you can store a number of altcoin addresses and it monitors them for new unspent outputs (incoming transactions), however, i can't remember their url's.