Comment by coppsilgold

Yes, with blind signatures you still have a central authority which voluntarily 'launders' tokens for you. When you present it your certificate and ask it to give you a blind signature it can reject the certificate.

However if someone extracts a key and keeps it private, and instead gives out unblinded tokens there is nothing you can do other than rate limit - realistically, an adversary is going to trial different rates anyway to figure out which don't make them an outlier.