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A comment on What Bitcoin’s White Paper Got Right, Wrong and What We Still Don’t Know (2018). Parent comment

Re:What Bitcoin’s White Paper Got Right, Wrong and What We S... by gruez on Saturday October 31, 2020 @10:39PM (#24956836)
>without introducing vulnerabilities into the system.

Did they end up solving the "nothing at stake" problem?

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Re:What Bitcoin’s White Paper Got Right, Wrong and What We S... by PretzelPirate on Sunday November 01, 2020 @08:33AM (#24959391)
Yes. With Ethereum’s PoS system, you get penalized for voting in multiple forks.

See https://eth.wiki/en/concepts/proof-of-stake-faqs (I can’t link to the paragraph).

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Re:What Bitcoin’s White Paper Got Right, Wrong and What We S... by gruez on Sunday November 01, 2020 @12:04PM (#24960811)
The "What is the “nothing at stake” problem and how can it be fixed?" proposes 2 solutions. Which one does ethereum use? The page itself is pretty long, and I can't find an answer with a quick skim.
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