Abstract
Internet of Things (IoT) technology has become more and more popular recently. However, due to the limited resources of IoT devices and the centralized system architecture, some severe issues remain difficult to solve, such as: overload of centralized server, single point of failure, and the possibility of malicious usage of personal information. Blockchain technology has achieved big success in cryptocurrency trading. It has many unique features, such as consensus mechanism, peer to peer communication, implementing trust without a trusted third party, and transaction based on smart contract. Blockchain appears to be suitable to help building a distributed and autonomic IoT system to overcome the aforementioned problems.
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