this post was submitted on 30 Sep 2025
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[–] bountygiver@lemmy.ml 4 points 2 days ago* (last edited 2 days ago)

cannot remove anything is a feature, it prevents people from changing history (imagine being able to undo all your outgoing payments)

And the reason you have to solve 5000 sudoku is by proving you have a limited resource, in this case processing power (and proof of stake makes it the money you have and skip the 5000 sudokus). Because if you are identifying people by a user account, there's nothing stopping 1 person from creating 20 billion accounts.