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A comment on Cryptocurrency Blockchains Don’t Need to Be Energy Intensive. Parent comment

Re:Cryptocurrency Blockchains Don’t Need to Be Energy Intensive by hypertele-Xii on Tuesday July 06, 2021 @03:33PM (#27753222)
Public keys identify wallets. Key X tries to double spend, it is detected, proof propagates across network, nodes vote to insert into the consensus ledger a public record that key X has been "dis-trusted". The network thenceforth rejects transactions from wallet identified by key X.

Now key X has been dis-trusted.

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Re:Cryptocurrency Blockchains Don’t Need to Be Energy Intensive by Marazan on Wednesday July 07, 2021 @05:56AM (#27759297)
They are not going to reuse a wallet for a second double spend attack.
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