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by brian_cloutier 1402 days ago
PoS seems very similar to PoW, and if one is fine (as we seem to think), the other is fine too.

In POW there are only block producers, and producing a block requires actively choosing transactions and transaction ordering.

Ethereum POS includes an additional attestation step where validators confirm that they have seen blocks without exercising any control over the contents of those blocks.

But this is exactly what PoW miners do when they extend the chain: every block is a vote for all previous blocks in the chain.