A question about all blockchains

Hey Guys,How Blockchain contains secure information.we have rvn explorer to track where the transaction done .RVN blockchain have transperancy.More people saying RVN will be good for real estate tokenization with this much of transperancy this means can anyone able to see the real estate token ?. This doesn't make sense.Last question If I have a asset in my wallet does everyone can see my asset in my wallet ?.I know my ques doesn't make sense but pls explain