I admire your confidence but I don't share it - showing universality for a complex construct like yours is rather nontrivial. You should really start by testing with SMHasher, though. Best of luck.
Maybe i ought to have just said that the title includes the qualifier, " - that's the aim anyway," reinforcing the notion that even if we don't know if tifuhash is universal, it aims to be.
So work is ongoing in that area, and you're welcome to contribute code or work on an approach to prove it is universal at some point. If you have more you'd like to contribute, you could become co author potentially.
Please try to see it like that. That's the idea I'm going for here. Thanks