I don't think it's the intent, but I don't think it's possible to invent a currency that is non-reversible, globally transferable and not linked to a physical i

I don't think it's the intent, but I don't think it's possible to invent a currency that is non-reversible, globally transferable and not linked to a physical identity without also making it perfect for crime (because those are the same characteristics that would be good for that sector).