Can I know the details of getting a BAT?

Hi everyone!

Well, I’d like to know if is posible to ‘trace’ or have more details of a BAT transaction. I mean how to know if it comes from ads or from another source…

My brother earned 0.500 (two transactions of 0.250 BAT) “unexpected” tokens, he think that amount is more than he should’ve receive from rewards program of the brave browser… In Uphold it only says is from “Brave Software International”… He got his BATs some days ago…

How can we understand these transactions?
Thanks in advance.