The Internet is evolving into a new multi-factor paradigm based around smart systems, Internet of Things, new distributed data structures (e.g. blockchains) and digital assets (e.g. cryptocurrencies). In the next years, these technologies will converge and interact, fostering novel services, business models and applications. Indeed, the blockchain can provide an automated and secure transaction infrastructure for next generation Internet of Things (IoT), mobile and smart systems while the voluntary user participation to the mining of cryptocurrencies could permit the development of new distributed services (i.e. offering an alternative to the advertisement-based revenue system used by most of the “free services” that are currently available...