Speedy urbanization imposes innovative resolutions to effectively manage assets, infrastructure, and civilian amenities. Smart cities, leveraging interconnected strategies and data collection, offer an auspicious approach. However, security, transparency, and data integrity remain acute challenges in these complex environments. The distributed ledger system and tamper-proof records of blockchain technology make it an encouraging game-changer for smart cities. The transformational potential of blockchain expertise to develop the productivity and safekeeping of smart towns is examined in this chapter. This chapter tackles the security issues that are common in many areas of smart city development, plus supply chain management, health care, transportation, energy, financial organizations, and data center networks. Blockchain is integrated because of its auditability, transparency, immutability, and decentralization. The paper looks at blockchain technology’s potential in various smart city domains after giving some background information on the subject. Regulatory organizations generally don’t know enough about current infrastructures, which makes blockchain adoption difficult even with its promise. This chapter deliberates on the benefits plus experiments of incorporating blockchain technology into smart city infrastructures and offers suggestions for further research.