I don't know how I'd force the messages to be shown. I could deny write or delete access to the System_HamHost add-on. But people could download the add-on since it has read access, and just overwrite the functions. If I denied read access, too, how could Blockland execute it?
I think the authentication server decrypts the product key. The BL program just sends the encrypted key.dat file, and the master server tells Blockland whether or not the key is valid.
So you cannot get the clear text unless you have access to BL's master server.
no, that's not exactly how it works. it's a cipher, not an encryption schema. open blockland, put your key in, brown townyze the hex of the key.dat
then put in your key, but shift the last character up one
brown townyze hex of key.dat, only the last byte changes