Identifying who used friend's link

Is there any way of identifying who used my friend’s link? If I sent it to several people and one used it it would be nice to be able to say thank you to the right person.

Hey, Wayne. Such information is not available due to our privacy policy, but you can always contact us to confirm the exact number of people who have used the link. In other words, each person who has been referred needs to reach us individually for any account-related questions.