Hey my friend wants to buy blockland but he doesn't have a credit card. He was wondering if he could give me 20 bucks IRL and I will buy the key with my credit card. But he wants the key to be registered to his account (for key recovery and whatnot) and I don't know if he will get my credit card info if I do. How would I be able to transfer/gift a key to my friend without out him getting my billing info?