this post was submitted on 31 May 2024
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You don't have to "mine blocks" to have a blockchain. It's just a continual list of transactions that can't be modified after the fact. So a hacker couldn't wipe out your existence from the chain without controlling the majority of the participants (in a consensus algorithm). Not saying it's an ideal use-case but highlighting that feature. There are many ways to avoid "data wipe" attacks.
So they are immutable basically.