That's a great question.
Bitcoin, as I mentioned in my presentation, is a public blockchain. One of the advantages of Bitcoin is its transparency. It's public.
Any one of us could go and look at every block that's ever been created on Bitcoin and you can see every transaction. You don't see the names of people who have transacted, but their public addresses. Really, there is very little or no privacy, so to speak.
In a permission blockchain, you can add layers of privacy. You can create different levels of security and different admin rights. The purists don't like permission blockchains. They don't call it a true blockchain. But for enterprise purposes such as an indigenous art registry, you can create different permissions, different security levels, to make it far more secure or far more private than public blockchains.