It seems people confuse the “public security” aspect of Bitcoin (ledger integrity protected by PoW) with the “private security” aspect of Bitcoin (safe ownership of coins protected by ECDSA). Signatures are only relevant to private security.https://twitter.com/aridavidpaul/status/985536073668456448 …
That's not what I meant. Of cos cryptography has value. But in the context of distributed consensus, talking about signatures before consensus is putting the cart before the horse. You need consensus first to establish meaning.
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Pow is one method of consensus.
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