From: Matt Corallo <lf-lists@mattcorallo•com>
To: Peter Todd <pete@petertodd•org>,
Bitcoin Protocol Discussion
<bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] BIP 158 Flexibility and Filter Size
Date: Thu, 17 May 2018 15:46:18 +0000 [thread overview]
Message-ID: <4703B065-AFDA-4AB6-9523-859067CF50F7@mattcorallo.com> (raw)
In-Reply-To: <20180517154315.pcs6cmx3lx3on4dz@petertodd.org>
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(1) can be accomplished by filtering for the set of outputs in the transaction you created. I agree (2) would ideally be done to avoid issues with a copied wallet (theft or not), but I am worried about the size of the filters themselves, not just the size of the blocks downloaded after a match.
On May 17, 2018 3:43:15 PM UTC, Peter Todd <pete@petertodd•org> wrote:
>On Thu, May 17, 2018 at 11:25:12AM -0400, Matt Corallo via bitcoin-dev
>wrote:
>> BIP 158 currently includes the following in the "basic" filter: 1)
>> txids, 2) output scripts, 3) input prevouts.
>>
>> I believe (1) could be skipped entirely - there is almost no reason
>why
>> you'd not be able to filter for, eg, the set of output scripts in a
>> transaction you know about and (2) and (3) may want to be split out -
>> many wallets may wish to just find transactions paying to them, as
>> transactions spending from their outputs should generally be things
>> they've created.
>
>So I think we have two cases where wallets want to find txs spending
>from their
>outputs:
>
>1) Waiting for a confirmation
>2) Detecting theft
>
>The former can be turned off once there are no expected unconfirmed
>transactions.
>
>As for the latter, this is probably a valuable thing for wallets to do.
>Modulo
>reorgs, reducing the frequency that you check for stolen funds doesn't
>decrease
>total bandwidth cost - it's one filter match per block regardless - but
>perhaps
>the real-world bandwidth cost can be reduced by, say, waiting for a
>wifi
>connection rather than using cellular data.
>
>--
>https://petertodd.org 'peter'[:-1]@petertodd.org
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next prev parent reply other threads:[~2018-05-17 15:46 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-17 15:25 Matt Corallo
2018-05-17 15:43 ` Peter Todd
2018-05-17 15:46 ` Matt Corallo [this message]
2018-05-17 16:36 ` Gregory Maxwell
2018-05-17 16:59 ` Matt Corallo
2018-05-17 18:34 ` Gregory Maxwell
2018-05-17 20:19 ` Jim Posen
2018-05-17 20:45 ` Gregory Maxwell
2018-05-17 21:27 ` Jim Posen
2018-05-19 3:12 ` Olaoluwa Osuntokun
2018-05-21 8:35 ` Johan Torås Halseth
2018-05-22 1:16 ` Olaoluwa Osuntokun
2018-05-22 9:23 ` Johan Torås Halseth
2018-05-23 0:42 ` Jim Posen
2018-05-23 7:38 ` Jim Posen
2018-05-23 8:16 ` Johan Torås Halseth
2018-05-23 17:28 ` Gregory Maxwell
2018-05-24 1:04 ` Conner Fromknecht
2018-05-24 3:48 ` Jim Posen
2018-05-28 18:18 ` Tamas Blummer
2018-05-28 18:28 ` Tamas Blummer
2018-05-28 19:24 ` Gregory Maxwell
2018-05-29 2:42 ` Jim Posen
2018-05-29 3:24 ` Gregory Maxwell
2018-05-29 4:01 ` Olaoluwa Osuntokun
2018-05-31 14:27 ` Tamas Blummer
2018-06-01 2:52 ` Olaoluwa Osuntokun
2018-06-01 4:15 ` Gregory Maxwell
[not found] ` <CAAS2fgSyVi0d_ixp-auRPPzPfFeffN=hsWhWT5=EzDO3O+Ue1g@mail.gmail.com>
2018-06-02 0:01 ` Olaoluwa Osuntokun
2018-06-02 0:22 ` Gregory Maxwell
2018-06-02 2:02 ` Jim Posen
2018-06-02 12:41 ` David A. Harding
2018-06-02 22:02 ` Tamas Blummer
2018-06-03 0:28 ` Gregory Maxwell
2018-06-03 5:14 ` Tamas Blummer
2018-06-03 6:11 ` Pieter Wuille
2018-06-03 16:44 ` Tamas Blummer
2018-06-03 16:50 ` Tamas Blummer
2018-06-08 5:03 ` Olaoluwa Osuntokun
2018-06-08 16:14 ` Gregory Maxwell
2018-06-08 23:35 ` Olaoluwa Osuntokun
2018-06-09 10:34 ` David A. Harding
2018-06-12 23:51 ` Olaoluwa Osuntokun
2018-06-09 15:45 ` Gregory Maxwell
2018-06-12 23:58 ` Olaoluwa Osuntokun
2018-05-17 18:34 ` Gregory Maxwell
2018-05-18 8:46 ` Riccardo Casatta
2018-05-19 3:08 ` Olaoluwa Osuntokun
2018-05-19 2:57 ` Olaoluwa Osuntokun
2018-05-19 3:06 ` Pieter Wuille
2018-05-22 1:15 ` Olaoluwa Osuntokun
2018-05-18 6:28 ` Karl-Johan Alm
2018-06-04 8:42 ` Riccardo Casatta
2018-06-05 1:08 ` Jim Posen
2018-06-05 4:33 ` Karl-Johan Alm
2018-06-05 17:22 ` Jim Posen
2018-06-05 17:52 ` Gregory Maxwell
2018-06-06 1:12 ` Olaoluwa Osuntokun
2018-06-06 15:14 ` Riccardo Casatta
2018-05-19 2:51 ` Olaoluwa Osuntokun
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