While it may not be the advent of Blockchain just yet, NSW is amending its legislation to allow for property deals to be enacted through digital signatures. 

While this may be Australia 'just keeping up' with where technology is taking the industry, expect a lot of caution from the average purchaser or vendor.  With recent media around the issues that PEXA has faced and cyber fraud in the settlement space, those transacting may find the initial convenience isn't enough to sway them from the traditional approach of pens on paper.  

Given its usually the largest transaction the average family completes, you can't blame them.  But like all technology advances, eventually this will become the norm - as long as the appropriate protections are put in place.