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From: Tier Nolan <tier.nolan@gmail.com>
To: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] New BIP32 structure
Date: Wed, 23 Apr 2014 19:39:40 +0100	[thread overview]
Message-ID: <CAE-z3OVCL34FMECHDC3d8OiRKYhVSkzZFU0cGHV0ifu09bCbJA@mail.gmail.com> (raw)
In-Reply-To: <CAJna-Hh2t-E=fm9V0EH+qOQTx+qsmcBemEJmML0G9PgsrJr5eg@mail.gmail.com>

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Different users could have different gap limit requirements.  20 seems very
low as the default.

A merchant could easily send 20 addresses in a row to customers and none of
them bother to actually buy anything.

Setting the gap limit to high is just a small extra cost in that case.

Bip-32 serialization doesn't have a way of adding meta data though.


On Wed, Apr 23, 2014 at 7:18 PM, slush <slush@centrum.cz> wrote:

> For those who don't follow github pull requests regularly; there's pull
> request for BIP64 defining HD wallet structure as discussed in this thread:
>
> https://github.com/bitcoin/bips/pull/52
>
>
>
> On Wed, Apr 23, 2014 at 8:01 PM, slush <slush@centrum.cz> wrote:
>
>>
>>
>>
>> On Wed, Apr 23, 2014 at 7:42 PM, Pieter Wuille <pieter.wuille@gmail.com>wrote:
>>>
>>> Storing the seed is superior to storing the master node already
>>> (whether coin specific or not), as it is smaller.
>>>
>>>
>> ...Except that you're loosing flexibility (serialization,
>> deserialization) which gives you BIP32 node.
>>
>> I see "bip32 seed" as some transitional, internal state from raw entropy
>> to bip32 master node and this seed should not be handled by the end user in
>> any form. In the oposite, well-serialized bip32 node (in xpriv, or even in
>> mnemonic format) can be used very widely and have no downsides against
>> using raw "bip32 seed".
>>
>>
>>>
>>> Fair enough, it would break strictly BIP32. Then again, BIP32 is a
>>> *Bitcoin* improvement proposal, and not something that necessarily
>>> applies to other coins (they can adopt it of course, I don't care).
>>>
>>>
>> I also don't care too much about altcoins, but people want them so me, as
>> infrastructure developer, need to think about it. And I don't see any
>> reason for breaking compatibility between Bitcoin and other altcoins. I
>> would be happier if there will be another sentence than "Bitcoin seed", but
>> honestly, who cares. It is just some magic string for hashing the raw
>> seed...
>>
>>
>>> What I dislike is that this removes the ability of using the magic in
>>> the serialization to prevent importing a chain from the wrong coin.
>>>
>>
>> The truth is that even existing software which handle bip32 don't care
>> about 'version' at all. I think that "xpub/xprv" distinction is the only
>> useful feature of version, so user se if it stores public or private
>> information.
>>
>> But using prefixes which doesn't enforce anything is even more dangerous.
>> If somebody exports node "dogeblablabla", it creates false exceptations
>> that there's only dogecoin stored.
>>
>>  Marek
>>
>
>
>
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  reply	other threads:[~2014-04-23 18:39 UTC|newest]

Thread overview: 100+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-26 20:49 [Bitcoin-development] New BIP32 structure Mike Hearn
2014-03-26 23:37 ` Andreas Schildbach
2014-03-27  1:01   ` Alan Reiner
2014-03-27  6:15     ` Mike Belshe
2014-03-27 10:57   ` Thomas Voegtlin
2014-03-27 11:39     ` Mike Hearn
2014-03-27 13:30       ` Thomas Voegtlin
2014-03-27 13:38         ` Mike Hearn
2014-03-27  1:13 ` Allen Piscitello
2014-03-27  5:34 ` Troy Benjegerdes
2014-03-27  7:09 ` Tamas Blummer
2014-03-27  9:42   ` Mike Hearn
2014-03-27 11:35   ` Pavol Rusnak
2014-03-27 15:43   ` Jeff Garzik
2014-03-27 15:57     ` Allen Piscitello
2014-03-27 16:06       ` Pavol Rusnak
2014-03-27 16:13         ` Allen Piscitello
2014-03-27 16:07       ` Tamas Blummer
2014-03-27 16:14       ` Pieter Wuille
2014-03-27 16:21         ` Pavol Rusnak
2014-03-27 16:28           ` Pieter Wuille
2014-03-27 17:49             ` Allen Piscitello
2014-03-28 14:59             ` slush
2014-04-08 12:43               ` slush
2014-04-08 13:18                 ` Pieter Wuille
2014-04-08 13:40                   ` slush
2014-04-08 13:43                     ` slush
2014-04-08 13:53                       ` Pieter Wuille
2014-04-08 13:59                         ` Thomas Voegtlin
2014-04-08 14:00                         ` Tamas Blummer
2014-04-08 14:35                         ` Pavol Rusnak
2014-04-08 15:41                         ` slush
2014-04-23 17:42                           ` Pieter Wuille
2014-04-23 18:01                             ` slush
2014-04-23 18:18                               ` slush
2014-04-23 18:39                                 ` Tier Nolan [this message]
2014-04-23 18:46                                   ` Pavol Rusnak
2014-04-23 19:00                                     ` Tier Nolan
2014-04-23 19:06                                       ` slush
2014-04-23 19:36                                         ` Tamas Blummer
2014-04-23 19:46                                           ` slush
2014-04-23 19:07                                       ` Tamas Blummer
2014-04-23 19:29                                       ` Pavol Rusnak
2014-04-23 19:44                                         ` Luke-Jr
2014-04-23 19:49                                           ` Pavol Rusnak
2014-04-23 19:55                                             ` Luke-Jr
2014-04-23 19:57                                               ` slush
2014-04-23 20:01                                                 ` Luke-Jr
2014-04-23 20:04                                                   ` Pavol Rusnak
2014-04-23 20:09                                                     ` Luke-Jr
2014-04-23 20:16                                                       ` Pavol Rusnak
2014-04-23 20:32                                                         ` Luke-Jr
2014-04-23 20:35                                                           ` Pavol Rusnak
2014-04-23 20:41                                                             ` Luke-Jr
2014-04-23 20:43                                                               ` Pavol Rusnak
2014-04-23 20:54                                                                 ` Pieter Wuille
2014-04-23 21:06                                                                   ` Pavol Rusnak
2014-04-23 21:18                                                                     ` Luke-Jr
2014-04-23 21:22                                                                       ` Gregory Maxwell
2014-04-23 21:33                                                                         ` Pavol Rusnak
2014-04-23 21:42                                                                           ` Pieter Wuille
2014-04-23 21:44                                                                             ` Pavol Rusnak
2014-04-23 21:48                                                                             ` Gregory Maxwell
2014-04-23 21:53                                                                           ` Luke-Jr
2014-04-23 21:24                                                                       ` Pavol Rusnak
2014-04-23 21:07                                                                   ` slush
2014-04-23 20:59                                                                 ` Luke-Jr
2014-04-23 20:17                                                       ` Tamas Blummer
2014-04-23 20:12                                                     ` Pieter Wuille
2014-04-23 20:08                                                   ` Pieter Wuille
2014-04-23 20:01                                               ` Tamas Blummer
2014-04-23 20:02                                                 ` Luke-Jr
2014-04-23 20:04                                                   ` Tamas Blummer
2014-04-24  6:54                                           ` Thomas Voegtlin
2014-04-24  7:10                                             ` Pieter Wuille
2014-04-24  7:21                                               ` Gregory Maxwell
2014-04-24  8:15                                                 ` Thomas Voegtlin
2014-04-24  7:42                                               ` Thomas Voegtlin
2014-04-24  8:09                                               ` Mike Hearn
2014-04-23 18:48                                   ` Tamas Blummer
2014-04-08 14:49                 ` Andreas Schildbach
2014-04-08 15:46                   ` slush
2014-04-08 15:58                     ` Andreas Schildbach
2014-04-08 16:24                       ` slush
2014-03-27 11:20 ` Thomas Voegtlin
     [not found]   ` <CAJna-HhmFya+3W67qQt0wMhW=B4vJvwdkr-5WnU+KEaKq7uaUA@mail.gmail.com>
2014-03-27 12:06     ` Thomas Voegtlin
2014-03-27 12:28       ` Mike Hearn
2014-03-27 12:49         ` Mike Hearn
2014-03-27 13:12           ` Thomas Kerin
2014-03-27 13:19             ` Mike Hearn
2014-03-27 13:49           ` Thomas Voegtlin
2014-03-27 13:58             ` Jim
2014-03-27 14:20               ` Mike Hearn
2014-03-27 15:17             ` Troy Benjegerdes
2014-03-27 13:07         ` Matias Alejo Garcia
2014-03-27 13:44       ` Pavol Rusnak
2014-03-27 13:53         ` Thomas Voegtlin
2014-03-27 14:03           ` Pavol Rusnak
     [not found]       ` <CAJna-HitjJbL9TnfxTY=+TvfaeNvZM6aPWmNYmHUCwmw6V8PUg@mail.gmail.com>
2014-03-27 15:04         ` Thomas Voegtlin
2014-03-27 11:36 ` Pavol Rusnak

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