Before diving into real use cases of blockchain in IoT and vice versa, let’s briefly outline the definitions of these two terms.

Thus, as comes from its name, a blockchain is a chain of blocks, each of which is marked by the time of its creation, by a link to the previous block, and is stored on a separate physical medium. This allows for implementing a serverless architecture. On top of that, the application of modern encryption algorithms allows you to protect individual records belonging to a specific person from copying/editing by other users of the centralized system.

https://requestum.com/iot-and-blockchain

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