Question

What's the pubkey in "getaddresses" with parameter: verbose=true? (I use bitcoin compatibilty address.) What's kind of the public key?

Where and how can I use it? Could I use it for encriptions?

Answer 1

The pubkey is the full public cryptographic key of this address, from which the public key hash (i.e. address) is calculated. You don't normally need to use it. As for using the public key for encryption, it's a complicated subject - please see this discussion for example:

https://bitcointalk.org/index.php?topic=1239463.0