Abstract
Advancement of technology has made humans use smartphones for transferring data. This has made an obvious requirement to have a record that tracks the modifications. Such an analysis provides a time-stamped record that is maintained by a user or by an algorithm. This time-stamped record is also called blockchain, which is distributed between computers. This is an immutable time series data for further access and research. Blockchain entirely depends on three pillars: transparency, decentralization, and immutability. This chapter deals with various applications of blockchain technology in smart cities. Applications of blockchain technology in smart cities include universal identification cards, smart property, smart power management, smart voting systems, etc. Such systems data will be of heterogeneous in nature and the introduction of blockchain provides a novel platform for sharing data with additional security as blockchain shares data through a distributed ledger that uses cryptography.
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