Abstract The Internet of Things (IoT) is poised to transform human life and unleash
enormous economic benefit. However, inadequate data security and trust of current IoT are
seriously limiting its adoption. Blockchain, a distributed and tamper-resistant ledger,
maintains consistent records of data at different locations, and has the potential to address
the data security concern in IoT networks. While providing data security to the IoT,
Blockchain also encounters a number of critical challenges inherent in the IoT, such as a …

Abstract The Internet of Things (IoT) refers to a network concept that extends its clients to any
item for information exchange and communication. Blockchain is a new application
paradigm of distributed data storage, point-to-point transmission, consensus mechanism,
asymmetric encryption, intelligent contract and other computer technologies. Blockchain
technology for IoT has been a hot topic in academia and industry. This paper mainly
summarizes the main existing research results of the challenges faced by IoT, the technical …