I've created a keypair with
Then I created a subkey only for signing.
If I clearly understand the process I have now 3 pub/priv pairs. The master, one for encrypting and one for signing.
I exported public keys with:
gpg --armor --export FINGERPRINT > pub.asc
Now I have a file which seems to contain only one public key. Is it the master public key? Does this pub key contain the others public keys?
I'll sign with the third subkey I've created, so which public key do I need to upload on a keyserver?