By the end of 2017 we expect the first transactions to be made on the Propy Registry. Each title transfer will require Propy Utility Tokens (PRO) for processing and validation. Furthermore, we’re negotiating with several governments to accept the title deed issued by our distributed registry as legal proof of ownership. Thus, growing the ecosystem by involving more governments and real estate companies will increase the usage of PRO tokens. A limited number of tokens — 100 million — will be created.

Source: The First Token Sale in Real Estate – Hacker Noon