I have to say I don't see it (but I haven't looked too hard either). Zero-Knowledge was very cool, I'm glad to see Austin Hill is back in this space.
In the late 90’s I had the pleasure to recruit Adam [Back] after reading his HashCash whitepaper to join the team of cryptographers we had at Zero-Knowledge Systems. Zero-Knowledge Systems was a company I co-founded with my father and brother to commercialize several cypherpunk privacy-enhancing technologies, including anonymous encrypted networking and Dr. Stefan Brands’ pioneering protocol for e-cash (still the most-flexible and powerful of the central-server protocols developed to date). While we had some amazing successes, many of which live on today, we were too early to see wide scale market acceptance of our e-cash work at that time.
Fast forward to December 2013 the roles were reversed. Adam flew to Montreal to recruit me to join him in a vision for the future of blockchain and digital assets.