From: Gregory Maxwell <greg@xiph•org>
To: Tamas Blummer <tamas.blummer@gmail•com>,
Bitcoin Protocol Discussion
<bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] BIP 158 Flexibility and Filter Size
Date: Sun, 3 Jun 2018 00:28:33 +0000 [thread overview]
Message-ID: <CAAS2fgQDdJpzPR9Ve81hhyqU+MO7Ryy125fzK-iv=sfwwORDCw@mail.gmail.com> (raw)
In-Reply-To: <343A3542-3103-42E9-95B7-640DFE958FFA@gmail.com>
On Sat, Jun 2, 2018 at 10:02 PM, Tamas Blummer via bitcoin-dev
<bitcoin-dev@lists•linuxfoundation.org> wrote:
> Years of experience implementing wallets with BIP 37
pretty much us that all these filter things are a total waste of time.
BIP37 use is nearly dead on the network-- monitor your own nodes to
see the actual use of the filters: it's very low. I see under average
of 1 peer per day using it.
Moreover the primary complaint from users about BIP37 vs the
alternatives they're choosing over it (electrum and web wallets) is
that the sync time is too long-- something BIP158 doesn't improve.
So if we were going to go based on history we wouldn't bother with on
P2P at all. But I think the history's lesson here may mostly be an
accident, and that the the non-use of BIP37 is due more to the low
quality and/or abandoned status of most BIP37 implementing software,
rather than a fundamental lack of utility. Though maybe we do find
out that once someone bothers implementing a PIR based scanning
mechanism (as electrum has talked about on and off for a while now)
we'll lose another advantage.
BIP37 also got a number of things wrong-- what went into the filters
was a big element in that (causing massive pollution of matches due to
useless data), along with privacy etc. This kind of approach will
have the best chances if it doesn't repeat the mistakes... but also
it'll have the best chances if it has good security, and getting SPV-
equivalent security will require committing the filters, but
committing them is a big step because then the behaviour becomes
consensus normative-- it's worth spending a few months of extra
iteration getting the design as good as possible before doing that
(which is what we've been seeing lately).
next prev parent reply other threads:[~2018-06-03 0:28 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
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 [this message]
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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