Every address comes with a checksum. If you accidentally capitalise a character in the address, it'll not be valid.
I meant if you wrongly set up a valid address but you don't have a private key, or something like coin burn.Is the only difference between these addresses is network byte?
It is more than I expected
, I will read these comments again and try to understand it.Small addition Can more than one valid address be generated from a private key?
Is knowing some private keys in HD wallets dangerous? Or sell wallet.dat files?