I could be wrong about this, but I don't think someone can do this for you. If I'm reading it correctly, once a payment source has donated $300 dollars it needs to be verified. Therefore, if you've been using a credit card to donate you would have to provide identification for that credit card, and other players would still be able to donate for you as normal as long as their source of payment hasn't reached $300.

 

Here's how it works.

Say, my name IRL is OMG HAX, and I've donated $275, and I donate another $25, I then have to verify under the name OMG HAX. If I get someone else to donate that $25 for me and they're on $275 as well, then they have to verify under their name, but you will still have to verify for yourself if you go over $300 on your money.