From: Dario Sneidermanis <dario@muun•com>
To: "David A. Harding" <dave@dtrt•org>
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] [Opt-in full-RBF] Zero-conf apps in immediate danger
Date: Fri, 7 Oct 2022 18:37:38 -0300 [thread overview]
Message-ID: <CAKiPDnQzJBZ6cCRCFM7j01cNz=BcU_-_AcTh3jVo-Metpnek3w@mail.gmail.com> (raw)
In-Reply-To: <1ee5a4e7ecffa0f638bbd45b195ecca6@dtrt.org>
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Hello David,
Thanks for the fast answer! It seems I missed the link to the PR, sorry for
the
confusion. I'm referring to the opt-in flag for full-RBF from #25353
(https://github.com/bitcoin/bitcoin/pull/25353).
On Fri, Oct 7, 2022 at 2:21 PM David A. Harding <dave@dtrt•org> wrote:
> On 2022-10-07 06:20, Dario Sneidermanis via bitcoin-dev wrote:
> > Hello list,
> >
> > I'm Dario, from Muun wallet [...] we've been reviewing the latest
> > bitcoin core release
> > candidate [...] we understood we had at least a year from the initial
> > opt-in deployment until opt-out was deployed, giving us enough time to
> > adapt
> > Muun to the new policies. However, when reviewing the 24.0 release
> > candidate
> > just a few days ago, we realized that zero-conf apps (like Muun) must
> > *immediately turn off* their zero-conf features.
>
> Hi Dario,
>
> I'm wondering if there's been some confusion. There are two RBF-related
> items in the current release notes draft:[1]
>
> 1. "A new mempoolfullrbf option has been added, which enables the
> mempool to accept transaction replacement without enforcing BIP125
> replaceability signaling. (#25353)"
>
> 2. "The -walletrbf startup option will now default to true. The wallet
> will now default to opt-in RBF on transactions that it creates.
> (#25610)"
>
> The first item (from PR #25353) does allow a transaction without a
> BIP125 signal to be replaced, but this configuration option is set to
> disabled by default.[2] There have been software forks of Bitcoin Core
> since at least 2015 which have allowed replacement of non-signaling
> transactions, so this option just makes that behavior a little bit more
> accessible to users of Bitcoin Core.
The "activation" of full-RBF after deployment works in a pretty interesting
way:
1. If no miner is running full-RBF or there aren't easily accessible
connected
components of nodes running full-RBF connected to the miners, then
full-RBF
is mostly ineffective since replacements aren't relayed and/or mined.
2. There's a middle ground where *some* connected components of full-RBF
nodes
can relay and mine replacements, where some full-RBF nodes will be able
to
replace via full-RBF and some won't (depending on their peers).
3. With high enough adoption, the relay graph has enough density of full-RBF
nodes that almost all full-RBF nodes can replace transactions via
full-RBF.
While there have been forks of Bitcoin Core (like Bitcoin Knots) running
full-RBF for a while, today most nodes (by far) are running Bitcoin Core.
So,
Bitcoin Core adding an opt-in flag (ie. off by default) makes it easier to
be
picked up by most node operators. Making the flag opt-out (ie. on by
default)
would make it easier still. We are dealing with a gradient going from hard
enough that we are still in 1, to easy enough that we get to 3.
The question then is whether an opt-in flag for full-RBF will have enough
adoption to get us from 1 to 2. If it isn't, then #25353 won't meet its
objective of allowing nodes participating in multi-party funding protocols
to
assume that they can rely on full-RBF. If it is, then zero-conf applications
will be at severe risk (per the logic in the initial email).
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next prev parent reply other threads:[~2022-10-07 21:37 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-07 16:20 Dario Sneidermanis
2022-10-07 17:21 ` David A. Harding
2022-10-07 17:28 ` Greg Sanders
2022-10-07 21:37 ` Dario Sneidermanis [this message]
2022-10-11 16:18 ` Pieter Wuille
2022-10-12 5:42 ` Anthony Towns
2022-10-12 16:11 ` Pieter Wuille
2022-10-12 21:44 ` Dario Sneidermanis
2022-10-13 4:35 ` Anthony Towns
2022-10-16 8:08 ` Anthony Towns
2022-10-17 14:25 ` Greg Sanders
2022-10-17 21:41 ` Antoine Riard
2022-10-18 7:00 ` Anthony Towns
2022-10-19 3:01 ` Antoine Riard
2022-10-19 3:17 ` alicexbt
2022-10-20 22:08 ` Peter Todd
2022-11-02 15:04 ` AdamISZ
2022-10-20 23:18 ` Peter Todd
2022-11-09 13:19 ` ArmchairCryptologist
2022-11-10 9:35 ` ZmnSCPxj
2022-10-07 20:56 ` Luke Dashjr
2022-10-08 20:47 ` alicexbt
2022-10-13 16:07 ` linuxfoundation.cndm1
2022-10-14 2:44 ` alicexbt
2022-10-14 15:02 ` Peter Todd
2022-10-17 20:31 ` Antoine Riard
2022-10-17 22:14 ` Antoine Riard
[not found] <mailman.7.1665662404.16405.bitcoin-dev@lists.linuxfoundation.org>
2022-10-14 10:03 ` John Carvalho
2022-10-14 15:04 ` Peter Todd
2022-10-14 16:28 ` Erik Aronesty
2022-10-15 4:08 ` John Carvalho
2022-10-15 4:20 ` John Carvalho
[not found] <CABZBVTC5kh7ca3KhVkFPdQjnsPhP4Kun1k3K6cPkarrjUiTJpA@mail.gmail.com>
2022-10-19 14:29 ` Sergej Kotliar
2022-10-19 14:45 ` Erik Aronesty
2022-10-19 15:43 ` Jeremy Rubin
2022-10-19 15:51 ` Greg Sanders
2022-10-19 16:04 ` Sergej Kotliar
2022-10-19 16:08 ` Greg Sanders
2022-10-20 1:37 ` Antoine Riard
2022-10-20 14:11 ` Sergej Kotliar
2022-10-21 1:04 ` Antoine Riard
2022-10-20 4:05 ` Peter Todd
2022-10-21 19:35 ` Peter Todd
2022-10-20 7:22 ` Anthony Towns
2022-10-20 12:37 ` Sergej Kotliar
2022-10-20 14:14 ` Ruben Somsen
2022-10-20 14:17 ` Sergej Kotliar
2022-10-20 19:58 ` Anthony Towns
2022-10-20 21:05 ` David A. Harding
2022-10-20 21:07 ` Greg Sanders
2022-10-20 22:02 ` Eloy
2022-10-21 12:02 ` Sergej Kotliar
2022-10-21 14:01 ` Greg Sanders
2022-10-21 14:19 ` Sergej Kotliar
2022-10-21 14:47 ` Greg Sanders
2022-10-21 19:43 ` Peter Todd
2022-10-24 7:55 ` Sergej Kotliar
2022-10-20 22:13 ` Peter Todd
2022-10-21 9:34 ` Sergej Kotliar
2022-10-21 19:33 ` Peter Todd
2022-10-24 7:45 ` Sergej Kotliar
2022-10-21 11:56 ` Sergej Kotliar
2022-10-23 19:20 ` David A. Harding
2022-10-23 20:51 ` alicexbt
2022-12-01 12:27 Daniel Lipshitz
2022-12-01 22:03 ` Erik Aronesty
2022-12-02 6:34 ` Daniel Lipshitz
2022-12-02 1:52 ` Antoine Riard
2022-12-02 6:59 ` Daniel Lipshitz
2022-12-02 4:30 ` Peter Todd
2022-12-02 7:06 ` Daniel Lipshitz
2022-12-03 8:50 ` Peter Todd
2022-12-03 11:01 ` Daniel Lipshitz
2022-12-03 11:51 ` Daniel Lipshitz
2022-12-03 12:12 ` Peter Todd
2022-12-03 13:17 ` Daniel Lipshitz
2022-12-03 14:03 ` Daniel Lipshitz
2022-12-05 12:21 ` angus
[not found] <6342098B-A548-43C9-8F92-AAD9D0BB66AB@coinspaid.com>
2022-12-03 14:06 ` Daniel Lipshitz
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