Bitcoin and the way information in its public ledger is made immutable. A new block of information is only accepted if the creator provably burnt a massive amount of energy. This may seem wasteful at first glance, but it’s actually a useful mega-structure. The Bitcoin mega-structure and all of the information embedded in it will likely last long into the future due to it’s globally distributed nature and strong incentive system keeping it together. It will serve as a source of unaltered information for generations to come.
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