The most unusual, and compelling feature of blockchain has nothing to do with cryptocurrency and everything to do with freedom

Blockchain tech is distributed, meaning that every computer or other devices on the network participates in its functioning. The devices, called nodes, can be right next to each other, or on different continents. These nodes could include a phone or laptop, or even a refrigerator or electric vehicle that is connected to the blockchain via the internet. In public chains, in which anyone can participate just by joining, every node has access to all the information on the chain, except for the identity of the person or organization behind the node. The hash function can protect their identities if desired).

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