In the burgeoning landscape of smart city infrastructure, the proliferation of Web 3.0 systems introduces distinct challenges, particularly concerning data security and scalability. The evolution of Industry 4.0 and Society 5.0 marks a significant progression in urban system capabilities. Central to this progression is the harmonious fusion of Information and Communication Technology (ICT) with the latest technological innovations, covering the broad spectrum of production and enterprise activities. This fusion is pivotal in stimulating an active flow of information, cultivating trust, improving operational efficiency, and elevating profitability for a wide array of stakeholders. This study investigates the congruence between the ReFi (Regenerative Finance) concept, which is founded on eight essential principles, and the principles underlying Smart City initiatives, both of which advocate for sustainable urban progression. The ReFi concept's principles are also integral to the Smart City framework. The anticipated scenario includes the formulation of smart contracts and their implementation on a blockchain network, which will manage access roles in IoT data sensing. The research's objective is to survey and suggest a framework and key considerations for the design and execution of the Web 3.0 ecosystem. This ecosystem represents the amalgamation of progress in the Internet-of-Things (IoT), Artificial Intelligence (AI), ReFi, Decentralized Finance (DeFi), and smart cities. The study emphasizes the revolutionary capacity of Web 3.0 to drive cities into a future that is not only more intelligent but also more robust, flexible, and responsive to the ever-changing demands of society.

Accessiable(LTS Version) https://www.academia.edu/117794720/Digital_Transformation_in_Smart_Cities_Decentralized_Architecture_for_Sustainable_Development_within_the_Web_3_0_Ecosystem Other https://orcid.org/0000-0003-3729-6290