Abstract
Blockchain is a decentralized architecture with built-in security to improve the trust and integrity of transactions. Blockchain can facilitate authentication and authorization without utilizing any trusted authority. There is no single authority that governs how the rules will be applied. Anyone is free to join the public blockchain network. Bitcoin is an example of public blockchain. Consortium blockchain is considered as partly decentralized architecture that can be open or private. Hyperledger and R3CEV are the examples of consortium blockchain. In private blockchain, nodes are restricted and have strict authority management on data access. Keeping in view of different blockchain technologies, this chapter has proposed four different applications of blockchain technology. The first one is detecting product genuineness using blockchain. The second is an application of blockchain in citizen participation. The third one is implementation of security in cloud computing using blockchain. The fourth is e-voting and event registration using blockchain technology.
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