Unused Alpha Key

I was wondering, if I’ve still got an unused alpha key (somehow managed to buy a fourth key without verification, but whatever) and Rust gets released onto Steam, what happens to my unused Alpha key?

I intended to save it for another friend that might want it (The first three were for myself and two friends, I’m not even sure how this fourth key was bought (it was actually bought as a third key, but Paypal said it had refused my debit card, but still somehow bought it…))

I’m aware that there was a ‘duplicate’ key given out when you bought it at some point, however, the purchases were made within hours of each other.

Thanks!

Make an account with the key, just to be safe.