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Last Notes

2023-06-07 20:00:39 CEST

- reply

📅 Original date posted:2017-05-23
📝 Original message:I'm glad some discussion has been moved back here.
Correct me if I am wrong, but currently core developers are arguing over
whether or not to allow an optional configuration switch which defaults off
but signals and enforces BIP148 when used. Who are we protecting users
from, themselves? Are you protecting core? from what? I am somewhat
genuinely befuddled by those who can't even allow a user config switch to
be set.
I guess I find it all incredibly silly, but perhaps I suffer from some
basic confusion.
On Mon, May 22, 2017 at 3:23 PM, Suhas Daftuar via bitcoin-dev <
bitcoin-dev at lists.linuxfoundation.org> wrote:
> I also do not support the BIP 148 UASF, and I'd like to add to the points
> that Greg has already raised in this thread.
>
> BIP 148 would introduce a new consensus rule that softforks out non-segwit
> signalling blocks in some time period. I reject this consensus rule as
> both arbitrary and needlessly disruptive. Bitcoin's primary purpose is to
> reach consensus on the state of a shared ledger, and even though I think
> the Bitcoin network ought to adopt segwit, I don't think that concern
> trumps the goal of not splitting the network.
>
> Many BIP 148 advocates seem to start with the assumption that segwit
> already has a lot of support, and suggest that BIP 148 does as well.
> However I don't think it's fair or correct to separate the activation
> proposal for segwit from the rest of the segwit proposal. The deployment
> parameters for segwit are consensus-critical; assuming that some other
> deployment has consensus because it would result in the rest of the segwit
> proposal activating is an unjustified leap.
>
> Even if there were no feasible alternate segwit deployment method
> available to us, I would hesitate to recommend that the network adopt a
> potentially consensus-splitting approach, even though I firmly believe that
> the ideas behind segwit are fundamentally good ones. But fortunately that
> is not the situation we are in; we have substantially less disruptive
> methods available to us to activate it, even if the current BIP 9
> deployment were to fail -- such as another BIP 9 deployment in the future,
> or perhaps a BIP 149 deployment.
>
> If we do pursue a "user-activated" deployment of segwit, I'd recommend
> that we do so in a more careful way than BIP 148 or 149 currently suggest,
> which as I understand would otherwise make very few changes to the current
> implementation. However, due to the BIP 9 activation assumption, the
> Bitcoin Core 0.13.1 - 0.14.0 segwit implementation largely lumps together
> the idea that miners would both enforce the rules and mine segwit blocks.
> However, we can separate these concerns, as we started to do in the Bitcoin
> Core 0.14.1 release, where mining segwit blocks is not required in order to
> generally mine or signal for segwit in the software. And we can go further
> still: without too much work, we could make further improvements to
> accommodate miners who, for whatever reason, don't want to upgrade their
> systems, such as by improving block relay from pre-segwit peers [1], or
> optimizing transaction selection for miners who are willing to enforce the
> segwit rules but haven't upgraded their systems to mine segwit blocks [2].
>
> If we would seek to activate a soft-fork with less clear miner signaling
> (such as BIP 149), then I think such improvements are warranted to minimize
> network disruption. In general, we should not seek to censor hashpower on
> the network unless we have a very important reason for doing so. While the
> issues here are nuanced, if I were to evaluate the BIP 148 soft-fork
> proposal on the spectrum of "censorship attack on Bitcoin" to "benign
> protocol upgrade", BIP 148 strikes me as closer to the former than the
> latter. There is simply no need here to orphan these non-signalling blocks
> that could otherwise be used to secure the network.
>
> To go further: I think BIP 148 is ill-conceived even for achieving its own
> presumed goals -- the motivation for adding a consensus rule that applies
> to the version bits on blocks is surely for the effect such bits have on
> older software, such as Bitcoin Core releases 0.13.1 and later. Yet in
> trying to bring those implementations along as segwit-enforcing software,
> BIP 148 would risk forking from such clients in the short term! If one
> really cared about maintaining consensus with older, segwit-enabled
> software, it would make far more sense to seek segwit activation in a way
> that didn't fork from them (such as BIP 149, or a new BIP 9 deployment
> after this one times out). And if one doesn't care about such consensus,
> then it'd be far simpler to just set (e.g.) August 1 as the flag day
> activation of segwit, and not play these contortionist games with block
> version bits, which carry no useful or intrinsic meaning. Either of these
> two approaches should have the advantage of reduced fork risk, compared
> with BIP 148.
>
> Of course, everyone is free to run the software of their choosing. I
> write this to both generally convey my opposition to a careless proposal,
> which I believe represents a way of thinking that is detrimental to
> Bitcoin's long run success, and specifically explain why I oppose inclusion
> of this proposal in the Bitcoin Core implementation [3]. The Bitcoin Core
> project hasn't been, and shouldn't be, careless in deploying consensus
> changes. Instead, I think the Bitcoin Core project ought to stand up for
> the best practices that our community has learned about how to deploy such
> changes (specifically for minimizing chain-split risk when deploying a soft
> fork!), and I think we should all avoid adoption or encouragement of
> practices that would depart from the high standards we are capable of
> achieving.
>
>
> [1] https://lists.linuxfoundation.org/pipermail/
> bitcoin-dev/2017-March/013811.html
> [2] https://github.com/bitcoin/bitcoin/pull/9955
> [3] https://github.com/bitcoin/bitcoin/pull/10428#issuecomment-303098925
>
>
> --Suhas Daftuar
>
>
> On Fri, Apr 14, 2017 at 3:56 AM, Gregory Maxwell via bitcoin-dev <
> bitcoin-dev at lists.linuxfoundation.org> wrote:
>
>> I do not support the BIP148 UASF for some of the same reasons that I
>> do support segwit: Bitcoin is valuable in part because it has high
>> security and stability, segwit was carefully designed to support and
>> amplify that engineering integrity that people can count on now and
>> into the future.
>>
>> I do not feel the the approach proposed in BIP148 really measures up
>> to the standard set by segwit itself, or the existing best practices
>> in protocol development in this community.
>>
>> The primary flaw in BIP148 is that by forcing the activation of the
>> existing (non-UASF segwit) nodes it almost guarantees at a minor level
>> of disruption.
>>
>> Segwit was carefully engineered so that older unmodified miners could
>> continue operating _completely_ without interruption after segwit
>> activates.
>>
>> Older nodes will not include segwit spends, and so their blocks will
>> not be invalid even if they do not have segwit support. They can
>> upgrade to it on their own schedule. The only risk non-participating
>> miners take after segwit activation is that if someone else mines an
>> invalid block they would extend it, a risk many miners already
>> frequently take with spy-mining.
>>
>> I do not think it is a horrible proposal: it is better engineered than
>> many things that many altcoins do, but just not up to our normal
>> standards. I respect the motivations of the authors of BIP 148. If
>> your goal is the fastest possible segwit activation then it is very
>> useful to exploit the >80% of existing nodes that already support the
>> original version of segwit.
>>
>> But the fastest support should not be our goal, as a community-- there
>> is always some reckless altcoin or centralized system that can support
>> something faster than we can-- trying to match that would only erode
>> our distinguishing value in being well engineered and stable.
>>
>> "First do no harm." We should use the least disruptive mechanisms
>> available, and the BIP148 proposal does not meet that test. To hear
>> some people-- non-developers on reddit and such-- a few even see the
>> forced orphaning of 148 as a virtue, that it's punitive for
>> misbehaving miners. I could not not disagree with that perspective any
>> more strongly.
>>
>> Of course, I do not oppose the general concept of a UASF but
>> _generally_ a soft-fork (of any kind) does not need to risk disruption
>> of mining, just as segwit's activation does not. UASF are the
>> original kind of soft-fork and were the only kind of fork practiced by
>> Satoshi. P2SH was activated based on a date, and all prior ones were
>> based on times or heights. We introduced miner based activation as
>> part of a process of making Bitcoin more stable in the common case
>> where the ecosystem is all in harmony. It's kind of weird to see UASF
>> portrayed as something new.
>>
>> It's important the users not be at the mercy of any one part of the
>> ecosystem to the extent that we can avoid it-- be it developers,
>> exchanges, chat forums, or mining hardware makers. Ultimately the
>> rules of Bitcoin work because they're enforced by the users
>> collectively-- that is what makes Bitcoin Bitcoin, it's what makes it
>> something people can count on: the rules aren't easy to just change.
>>
>> There have been some other UASF proposals that avoid the forced
>> disruption-- by just defining a new witness bit and allowing
>> non-upgraded-to-uasf miners and nodes to continue as non-upgraded, I
>> think they are vastly superior. They would be slower to deploy, but I
>> do not think that is a flaw.
>>
>> We should have patience. Bitcoin is a system that should last for all
>> ages and power mankind for a long time-- ten years from now a couple
>> years of dispute will seem like nothing. But the reputation we earn
>> for stability and integrity, for being a system of money people can
>> count on will mean everything.
>>
>> If these discussions come up, they'll come up in the form of reminding
>> people that Bitcoin isn't easily changed at a whim, even when the
>> whims are obviously good, and how that protects it from being managed
>> like all the competing systems of money that the world used to use
>> were managed. :)
>>
>> So have patience, don't take short cuts. Segwit is a good improvement
>> and we should respect it by knowing that it's good enough to wait for,
>> and for however its activated to be done the best way we know how.
>> _______________________________________________
>> bitcoin-dev mailing list
>> bitcoin-dev at lists.linuxfoundation.org
>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>
>
>
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev at lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
>
--
Steven Pine
(510) 517-7075
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2023-06-07 19:48:45 CEST

- reply

📅 Original date posted:2016-02-07
📝 Original message:Is it me or did Gavin ignore Yifu's direct questions? In case you missed it
Gavin --
~
"We can look at the adoption of the last major Bitcoin core release to
guess how long it might take people to upgrade. 0.11.0 was released on 12
July, 2015. Twenty eight days later, about 38% of full nodes were running
that release. Three months later, about 50% of the network was running that
release, and six months later about 66% of the network was running some
flavor of 0.11."
On what grounds do you think it is reasonable to assume that this update
will roll out 6x faster than previous data suggested, as oppose to your own
observation of 66% adoption in 6 month. or do you believe 38% node
upgrade-coverage (in 28 days ) on the network for a hard fork is good
enough?
There are no harm in choosing a longer grace period but picking one short
as 28 days you risk on alienating the nodes who do not upgrade with the
aggressive upgrade timeline you proposed.
~~
When Gavin writes "Responding to "28 days is not long enough" :
I keep seeing this claim made with no evidence to back it up. As I said, I
surveyed several of the biggest infrastructure providers and the btcd lead
developer and they all agree "28 days is plenty of time."
For individuals... why would it take somebody longer than 28 days to either
download and restart their bitcoind, or to patch and then re-run (the patch
can be a one-line change MAX_BLOCK_SIZE from 1000000 to 2000000)?"
~~
Isn't Yifu's comment, evidence, the very best sort of evidence, it isn't
propositional a priori logic, but empirical evidence that. As for why
people take longer, who knows, we simply know from passed experience that
it in fact does take longer.
It's extremely frustrating to read Gavin's comments, it's hard to believe
he is engaging in earnest discussion.
On Sun, Feb 7, 2016 at 4:01 PM, Luke Dashjr via bitcoin-dev <
bitcoin-dev at lists.linuxfoundation.org> wrote:
> On Sunday, February 07, 2016 2:16:02 PM Gavin Andresen wrote:
> > On Sat, Feb 6, 2016 at 3:46 PM, Luke Dashjr via bitcoin-dev <
> > bitcoin-dev at lists.linuxfoundation.org> wrote:
> > > On Saturday, February 06, 2016 5:25:21 PM Tom Zander via bitcoin-dev
> wrote:
> > > > If you have a node that is "old" your node will stop getting new
> > > > blocks. The node will essentially just say "x-hours behind" with "x"
> > > > getting larger every hour. Funds don't get confirmed. etc.
> > >
> > > Until someone decides to attack you. Then you'll get 6, 10, maybe more
> > > blocks confirming a large 10000 BTC payment. If you're just a normal
> end
> > > user (or perhaps an automated system), you'll figure that payment is
> good
> > > and irreversibly hand over the title to the house.
> >
> > There will be approximately zero percentage of hash power left on the
> > weaker branch of the fork, based on past soft-fork adoption by miners
> (they
> > upgrade VERY quickly from 75% to over 95%).
>
> I'm assuming there are literally ZERO miners left on the weaker branch.
> The attacker in this scenario simply rents hashing for a few days in
> advance
> to build his fake chain, then broadcasts the blocks to the unsuspecting
> merchant at ~10 block intervals so it looks like everything is working
> normal
> again. There are lots of mining rental services out there, and miners quite
> often do not care to avoid selling hashrate to the highest bidder
> regardless
> of what they're mining. 10 blocks worth costs a little more than 250 BTC -
> soon, that will be 125 BTC.
>
> Luke
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev at lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
--
Steven Pine
(510) 517-7075
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2023-06-07 19:42:44 CEST

- reply

📅 Original date posted:2015-10-05
📝 Original message:It's pretty clear Mike has turned into concern troll and bully. He insults
people, mischaracterizes others, quibbles over words and definitions and
has stated numerous times in other forums he has no interest in building
consensus changes he doesn't agree with himself.
He's lost his integrity and trust and why the core developers waste their
time with his antics is beyond me, let Mike fork Bitcoin, develop XT, and
ignore his input on core unless some XT feature is deemed good enough to
incorporate, that is how a thousand other open source projects deal with
trolls like Mike.
On Oct 5, 2015 3:41 PM, "Gregory Maxwell via bitcoin-dev" <
bitcoin-dev at lists.linuxfoundation.org> wrote:
> On Mon, Oct 5, 2015 at 7:13 PM, Tom Zander via bitcoin-dev
> <bitcoin-dev at lists.linuxfoundation.org> wrote:
> > It is an eloquent change, but not really the topic we were discussing.
> It also
> > makes you attack Mike (calling him out as having a strawman) without
> basis.
> > For the second time in this thread.
> > I would suggest arguing on the topic, not on the man.
>
> Such a shame you appear to reserve that wisdom for those you disagree
> with, biting your tongue when others emit all forms of ad hominem--
> such as suggesting we've spent less volunteer time on Bitcoin and thus
> our opinion has less merit (or that we haven't written certian kinds
> of software (even when, ironically, we have!), and thus our opinion
> doesn't have merit, and so on). I think everyone would benefit from
> it, especially as that kind of correction is best received from
> someone who agrees with you.
>
> In this case, I think, however your correction is also misplaced at
> least on this message; though I would otherwise welcome it. I'm not
> complaining about the man; but pointing out the behavior of stating an
> opinion no one as held as theirs and attacking it is not a productive
> way to hold a discussion. It's an argument or a behavior, not a
> person, and beyond calling it bad I attempted to explaining (perhaps
> poorly) why its bad.
>
> What Sergio is saying is not the same; Mike argued some established
> criteria existed where it didn't-- and I was pointing that out; and
> talking about how the situation here is not very similar to the one
> that Mike was trying to draw a parallel to. I enumerated a number of
> specific reasons why this is the case. If the differences between
> Sergio's comments and mine are still unclear after this clarification,
> I'd be glad to talk it through with you off-list-- in spite of your
> (welcome) compliments, communication is just fundamentally difficult,
> and no amount eloquence changes that. If there is continued
> misunderstanding, I do not doubt its my fault; but it's probably not a
> good use of hundreds/thousands of people's time for you to help me
> interactively improve my explanation on list. :)
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev at lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
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2023-06-07 19:40:34 CEST

- reply

📅 Original date posted:2015-09-20
📝 Original message:It's amazing how foolish some people are to continue trusting governments
especially in light of recent history: a seemingly endless, Orwellian 'war
on terror', multiple regional conflicts often justified by fake evidence,
wholesale disregard of law and basic human covenants such as do not
torture, ubiquitous and secret global surveillance.
Anyone who doesn't consider governments the proper threat model is either a
shill or an idiot.
On Sep 20, 2015 12:34 PM, "Milly Bitcoin via bitcoin-dev" <
bitcoin-dev at lists.linuxfoundation.org> wrote:
> Until this is settled, Bitcoin has no clear direction and developers
>> cannot make effective decisions:
>>
>
> How exactly do things set "settled" in this environment?
>
> People looking at Bitcoin think a small group of developers and miners
> "control" these decisions. Not sure if "control" is the right word but
> that is the perception.
>
> Russ
>
>
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev at lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
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2023-06-07 17:34:12 CEST

- reply

📅 Original date posted:2015-05-08
📝 Original message:Block size scaling should be as transparent and simple as possible, like
pegging it to total transactions per difficulty change.
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