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authorZmnSCPxj <ZmnSCPxj@protonmail.com>2021-05-18 12:22:09 +0000
committerbitcoindev <bitcoindev@gnusha.org>2021-05-18 12:22:20 +0000
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parentd53a5cc1a076bfb9dfd5b2afe2289a11c00d7398 (diff)
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Re: [bitcoin-dev] Proposal: Low Energy Bitcoin PoW
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+To: "mike@powx.org" <mike@powx.org>
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+Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>,
+ marshall ball <marshallball@gmail.com>
+Subject: Re: [bitcoin-dev] Proposal: Low Energy Bitcoin PoW
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+
+Good morning Michael,
+
+> Nothing in a dynamic system like PoW mining can be 100% anticipated, for =
+example there might be advanced in manufacturing of chips which are patente=
+d and so on.=C2=A0
+>
+> It sounds like your take is that this means no improvements can ever be m=
+ade by any mechanism, however conservative.
+
+Not at all.
+
+Small-enough improvements over long-enough periods of time are expected and=
+ anticipated --- that is why there exists a difficulty adjustment mechanism=
+.
+What is risky if a large-enough improvement over a short-enough time that o=
+verwhelms the difficulty adjustment mechanism.
+ASICBOOST was a massive enough improvement that it could be argued to poten=
+tially overwhelm this mechanism if it was not openly allowed for all miners=
+.
+
+>
+> We do go into a fair amount of detail about Minimum Effective Hardness in=
+ our paper=C2=A0https://assets.pubpub.org/xi9h9rps/01581688887859.pdf=C2=
+=A0, which is actually a special case of hardness that we invented for the =
+context of adding an operation to a PoW, and how it applies to random matri=
+x mults. =C2=A0=C2=A0
+
+This certainly helps as well.
+
+Regards,
+ZmnSCPxj
+