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From: Gavin Andresen <gavinandresen@gmail.com>
To: Kalle Rosenbaum <kalle@rosenbaum.se>
Cc: bitcoin-dev@lists.linuxfoundation.org
Subject: Re: [bitcoin-dev] Draft BIP : fixed-schedule block size increase
Date: Mon, 22 Jun 2015 16:46:51 -0400	[thread overview]
Message-ID: <CABsx9T1KsOHF2u+Sk0c1d1U11ff-FJH9EjC4XNZP4-puWKE_Lg@mail.gmail.com> (raw)
In-Reply-To: <CAPswA9wVEs6oH8CxafLvLy78bpC937HZccjXHwyq8JVMV7qiQA@mail.gmail.com>

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On Mon, Jun 22, 2015 at 4:27 PM, Kalle Rosenbaum <kalle@rosenbaum.se> wrote:

> * In the specification, you refer to "t_start". I guess you mean
> "time_start"?
>

Thanks, I'll fix.


> * Miners can, especially when close to a block doubling or shortly
> after activation, to some extent manipulate max block size by
> manipulating the time stamp in the block header within valid limits.
> According to the pseudo code in the specification, the first and a
> handful of subsequent blocks after activation could actually have
> negative max block sizes due to this (depending on how you define the
> % operator of the pseudo code). I haven't checked the reference
> implementation, but I do think that the specification section should
> explicitly handle this.
>

Excellent point. That could only happen if activation happened on 11 Jan
2016; instead of complicating the code and spec with another condition, I
think it would be better to specify that the activation date is the later
of the miner supermajority and 11 Jan, with the first big block two weeks
later.


-- 
--
Gavin Andresen

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  reply	other threads:[~2015-06-22 20:46 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-22 18:18 [bitcoin-dev] Draft BIP : fixed-schedule block size increase Gavin Andresen
2015-06-22 18:33 ` Tier Nolan
2015-06-22 18:46   ` Gavin Andresen
2015-06-22 19:10 ` Martin Schwarz
2015-06-22 19:28   ` Tier Nolan
2015-06-22 19:54     ` Gavin Andresen
2015-06-22 20:12       ` Peter Todd
2015-06-22 19:23 ` Peter Todd
2015-06-23  7:35   ` Ross Nicoll
2015-08-17 15:58     ` Jorge Timón
2015-06-23 19:16   ` Peter Todd
2015-06-22 20:27 ` Kalle Rosenbaum
2015-06-22 20:46   ` Gavin Andresen [this message]
2015-06-22 20:51     ` Gavin Andresen
2015-06-22 21:52 ` Mark Friedenbach
2015-06-23 19:28 ` Peter Todd
2015-06-23 20:12   ` Gavin Andresen
2015-06-23 20:26     ` Pieter Wuille
2015-06-23 20:50       ` Peter Todd
2015-06-24  6:14         ` grarpamp
2015-06-23 20:46     ` Peter Todd
2015-06-23 21:24       ` Gavin Andresen
2015-06-26 19:08         ` Peter Todd
2015-06-26 22:01           ` Ivan Brightly
2015-06-26 19:25         ` Peter Todd
2015-06-26 22:16           ` Simon Liu
2015-06-27  2:14             ` Milly Bitcoin
2015-06-23 20:55     ` Roy Badami
2015-06-24  1:43 ` odinn
2015-06-24  3:05   ` William Madden
2015-06-24  3:49     ` Jeff Garzik
2015-06-24 13:06       ` Will
2015-06-24 13:44         ` Gavin Andresen
2015-06-25  0:32           ` Pindar Wong
2015-06-25 13:50       ` Gareth Williams
2015-06-25 14:07         ` Adam Back
2015-06-26 13:47           ` Tier Nolan
2015-06-26 15:13             ` Will
2015-06-26 17:39               ` Gavin Andresen
2015-06-26 19:07                 ` Will
2015-07-01 22:49             ` odinn
2015-08-17 13:15               ` Tier Nolan
2015-08-17 13:18                 ` Clément Elbaz
2015-08-19  3:45                 ` odinn
2015-08-17 16:11             ` Jorge Timón
2015-06-26 21:07 ` Carsten Otto
2015-06-22 19:32 Jean-Paul Kogelman
2015-06-22 20:43 ` Tier Nolan
2015-06-22 20:54 ` Peter Todd
2015-06-22 21:04   ` Stephen Morse
2015-06-22 21:32     ` Ross Nicoll
2015-08-17 15:54       ` Jorge Timón
2015-06-22 21:21   ` Gavin Andresen
2015-06-22 21:39     ` Patrick Strateman
2015-06-22 21:48     ` Tier Nolan
2015-06-23  7:59 Ross Nicoll
2015-06-24  4:31 Raystonn
2015-06-24 17:05 ` Mark Friedenbach
2015-06-24 17:24   ` Roy Badami
2015-06-24 17:23 Raystonn
2015-06-24 17:24 ` Allen Piscitello
2015-06-24 17:28 ` Roy Badami

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