[somesay]

I guess full name credits to prove their participation in case of job interviews while not making it too easy for the lawyers to address them. A timestamped, maybe later revealed proof of knowledge or secret communication doesn't make a lot of sense here.

[tlrobinson]

A simple hash of the full names would do, wouldn't it?

[somesay]

Well, but everyone could try guessing the names then, something they probably don't want. After all, it's just speculation what they have hidden there.

[tlrobinson]

A hash with a sufficiently long random string appended, then.