A careful read of the Nakamoto paper reveals that the original purpose of the blockchain is extremely specialized: A completely decentralized consensus among unreliable actors. I'd like to highlight the often overlooked fact that this is exactly what the blockchain is suitable for. Any change in the conditions and you are probably doing extra work. Data immutability is a good example. Recently, especially in the mainstream media, data immutability has been presented as something that has been pioneered by blockchain technology, though it's easier to achieve similar
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