DELHI, (Smart Cities News): New Information and Communications Technologies (ICT) are changing how the world works and that stresses the role of unified communications, telecommunications in the form of telephone lines and wireless connections. It enables the users to access, store, understand, and manipulated details. These technologies provide new tools to face the issues of contemporary society (poverty, migrations, sustainable development challenges, governance, etc.).
Among them, blockchain emerges as a detrimental technology able to make things in a completely different and innovative way. They can provide solutions where before there were none. Recently, these technologies have become the subject of intense research and development by industry and institutions as well. In consequence, a large amount of interesting works is published in different areas, proposing solutions, services, frameworks, and applications based on these technologies.
However, the proposals arrive at a higher speed than society can embezzle them, and sometimes they are not properly exploited. Thus, it provides a comprehensive overview of blockchain technology to identify what are the key attributes that enable it to successfully address social challenges. The review has been conducted from three-point of view that is (I) Service delivery, (II) Resource management, and (III) City administration, and which have been focused on the Sustainable Development Goals of the United Nations, to cover the full agenda of current social issues. The contributions of this work are a detailed collection of the existing research on blockchain technology to tackle the social challenges from several angles and the identification of the key features and the conditioning factors of the practical applicability of the technology.