The Smart City, Smart Contract, Smart Health Care, Internet of Things (IoT), Opportunities, and Challenges

The smart city idea is discussed in the literature in multitude of ways. Researcher Komninos specifies the smart cities and surrounding larger regions as environments with a high potential for learning and innovation, utilizing the ingenuity of population and societies with digital infrastructures to function in the physical, uniform, and numerical spaces of cities. The smart city model is defined in the literature in numerous types of ways. As cities develop and expand their services, governance and management are becoming more and more complex. Consequently, cities must adapt to address the economic, social, engineering, and environmental challenges of these transformations. Cities must become smart to face the challenges properly and increase livability and quality of life. This secondary research utilizes detailed literature review of multifaceted sources of information, such as peer-reviewed and quality academic journal articles from renowned databases. With the introduction of blockchain, numerous fields like banking, finance, health care, and supply chain shall experience positive effects. The sustainability of the smart cities can be further enhanced and ensured with the application of the blockchain technology. One important area in which the blockchain represents the important future is real estate and smart cities. Real estate has been going through global transformation. The challenges surfacing in record keeping in scenarios where the same household and/or property is put up for sale to several parties by the means of fraudulently forging the documents or records. The opportunities and challenges must be properly researched, addressed, and weighted out against each other in order to ensure a sustainable future to benefit the most if not all.