ABSTRACT
In the modern world, humans were inventing and discovering many new inventions, but they never concern about their health. Health is the main thing for a human, by that they can achieve various goals in the competitive earth. Blockchain is a decentralized technology that has the digital records of the data that are stored as blocks using a cryptographic hash. Internet of Things (IoT) is a collection of Wi-Fi sensors, actuators, software, and computer devices. After that, it is incorporated with mobile devices for various purposes. Big data is also an emerging that tends to analyze, extract information from complex databases to achieve high output with data security and confidentiality. By the integration of both, IoT and big data provide many advanced features for the current century that will enhance to improve various applications like health care, automobile, financial, and risk management. In this chapter, we investigate peer-to-peer cryptographic secured blockchain technology for IoT and big data in healthcare applications like collecting the data, analyzing the data, and providing full-pledged care to the patients by the healthcare management systems by the integration of IoT and big data to provide high privacy, authentication, integrity, and nonrepudiation to the applications. And also, it summarizes about concept of healthcare applications, blockchain technology proposed architecture, working model, and future works.
