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authorJorge Timón <jtimon@jtimon.cc>2015-07-23 13:10:45 +0200
committerbitcoindev <bitcoindev@gnusha.org>2015-07-23 11:10:50 +0000
commit80d63b4239eb4261fdd240e5d057d59bf76d81c1 (patch)
tree33101015e48ee51d89eb7027da46e83d9faced81
parent761b2268c6e5da4052b84359de6afd915ef9387b (diff)
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Re: [bitcoin-dev] [Bitcoin-development] [BIP draft] Motivation and deployment of consensus rules changes ([soft/hard]forks)
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+Date: Thu, 23 Jul 2015 13:10:45 +0200
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+From: =?UTF-8?B?Sm9yZ2UgVGltw7Nu?= <jtimon@jtimon.cc>
+To: Gregory Maxwell <gmaxwell@gmail.com>
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+Subject: Re: [bitcoin-dev] [Bitcoin-development] [BIP draft] Motivation and
+ deployment of consensus rules changes ([soft/hard]forks)
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+Discussions about whether to get miner's confirmation on
+uncontroversial hardforks or not, and about whether to use nHeight,
+nMedianTime or just use nTime are spreading all around. Hopefully
+getting a BIP number (even though this is still a draft) will help
+concentrating discussions about deployment of uncontroversial
+hardforks to a single place.
+Greg, can I get a BIP number for this?
+
+On Sun, Jun 21, 2015 at 12:54 PM, Tier Nolan <tier.nolan@gmail.com> wrote:
+> On Sun, Jun 21, 2015 at 11:31 AM, Jorge Tim=C3=B3n <jtimon@jtimon.cc> wro=
+te:
+>>
+>> You mean the timewarp fix can be coded as a softfork instead of a
+>> hardfork? How so?
+>
+>
+> The easiest would be a rule requiring that all blocks are within 1 day of
+> the median of the previous 11 blocks. At the moment, you need to be grea=
+ter
+> than that value. This would add a condition at the other end.
+>
+> It wouldn't be a total fix, but it would protect against the exploit.
+>
+> A stricter soft fork would be that the two blocks in question have to hav=
+e
+> the same timestamp. This would force the off by 1 and the correct value =
+to
+> give the same result.
+>
+>> If that's the case, do you have a better candidate?
+>
+>
+> I think it is fine, since fixing it "right" does require a hard fork,
+> especially if it is only to show a non controversial hard fork.
+>
+> -------------------------------------------------------------------------=
+-----
+>
+> _______________________________________________
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+> Bitcoin-development@lists.sourceforge.net
+> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
+>
+