..it's also true that some hidden addresses are not showed in the explorer...
what are hidden addresses? are you talking about some altcoin or is it still bitcoin, because there is no such thing as hidden address in bitcoin. everything is out there and if the bitcoin address has ever received any payment it will show up on a block explorer.
hidden address are the one that you can view with listgrouptransactions, they are change address it ensure some level of privacy
using multiple address is useless they are all linked if in the same wallet, in fact i only use one now, privacy is still safe because the address it's not linked to your name you know
Quote from the Bitcoin Wiki about this:
There has been significant research into the area of what researchers are calling 'identity collapse', which is what happens when more than one Bitcoin address is strongly-linked via the Bitcoin transaction graph to another. Re-using addresses makes their job trivial. There are publically-known databases that exist, right now, that have not only collapsed millions of Bitcoin addresses, but used publically-available information to link those collapsed identities to individuals, and these databases are being actively maintained.
When you buy coins, the exchange can see the addresses that the funds move to. When you send your coins to a shop, they can see the address that it came from, and if you give them a shipping address then they know who you are and that you own that address.
It's true that when you spend, you would be spending from multiple addresses and the shop would see all of the addresses that you spent from - but the point is that the shop would have to do at least a little effort, and be fully malicious, if they wanted to find out where the rest of your funds were.
if you want real privacy you need to use a new wallet each time not creating a new address
OK, but you still need to understand the importance of changing addresses when you're receiving coins from someone new.
even if you use a different address for receiving, you have no control over your address when you send money
so it could be that the next time you send money your wallet send from that address you received and put the change to one another address which is linked with your main address, therefore you are traceable
using multiple address is useless they are all linked if in the same wallet, in fact i only use one now, privacy is still safe because the address it's not linked to your name you know
if you want real privacy you need to use a new wallet each time not creating a new address, it's also true that some hidden addresses are not showed in the explorer...
Im confused that those hidden addresses cant be detect by explorer. Are they mostly the newly created? which doesnt have much transactions which explorer cant detect. Multiple address on a same wallet is still fine since there are wallets that do have an option if you would like to link on a main wallet or create a new one which doesnt have relation on the main.
they are change address, soem of them can not be displayed by the explorer, i have in fact an example of my cold storage which say that there are some bitcoin in blockchain.info but in reality there are more