From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 16ECCC0001 for ; Thu, 4 Mar 2021 23:45:16 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id E849F43094 for ; Thu, 4 Mar 2021 23:45:15 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: 0.002 X-Spam-Level: X-Spam-Status: No, score=0.002 tagged_above=-999 required=5 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, MIME_QP_LONG_LINE=0.001, RCVD_IN_DNSWL_NONE=-0.0001] autolearn=ham autolearn_force=no Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=voskuil-org.20150623.gappssmtp.com Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lzC8-SGAYxsY for ; Thu, 4 Mar 2021 23:45:13 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by smtp2.osuosl.org (Postfix) with ESMTPS id E5720400CC for ; Thu, 4 Mar 2021 23:45:13 +0000 (UTC) Received: by mail-pf1-x429.google.com with SMTP id a188so642771pfb.4 for ; Thu, 04 Mar 2021 15:45:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=voskuil-org.20150623.gappssmtp.com; s=20150623; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:cc:in-reply-to:to; bh=EVLSgZgAUiK9mzfShoQSx2xzfX+EdhWF61LvJCD7dvM=; b=F6RqCLlr710HIlxVae5VGIPEnMpCe4HZS2IiLquVGsUP3I0gimhWcQU1CtN7p7e8Hn 58lNIaKaRwrqY0tmEEgPX//RB60wHZccjGStoi+hxuEI3BUsQx8cHsnE6OWMOqBQ4mIk P/9JH9/6t+MfEAihGi7+lfQnZub2sVAVmVryZKWjIX4QwHwo+DyU//4w9OEpURXpavBF i9SdXJYJetAC/6VRWsXIj7PHhWGzO322czUYPCi5ZojHaJrtPvvgT0ioW5CuRcra4aF+ +D4fI7sEYXOhPnOmojfkmbBkAev/uFNCTGqGLqn2YAow2Wk7WJ+MuxHLfBua8Vy7UL1x Y4UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:cc:in-reply-to:to; bh=EVLSgZgAUiK9mzfShoQSx2xzfX+EdhWF61LvJCD7dvM=; b=dhvLVaCBgCVyH81VzNlEpMwXQ0atSnYNfyFEXQCs/OA9Bdnxot+hzwebkSZHg0HGHR F487dnPUNJzjP3a/kNAZyPmLwCAUrYX49o1DcwmTH6prPoBP5EBLARZ7IVMNtaTYPbas jVEAKdayzlPWdBn99qkdhgcMVYmaUmWxF8lh4ZYAhUb2x18iCSDAbNrIbNhQpBK+wWz7 Vv20GC2cmTzfsVJsyUNhZ1qzlM7aAy4j/C19qLbBzJGkcuHVZw1J93nnoxskE5wyWl4z FF5/QZsOZFuog/PgmlYQ5V1NlsC6pILM8U5snTgr/T366plpDLTQCMfivXoL3PMvbmV2 wllg== X-Gm-Message-State: AOAM530WQG9OyZdf3EgFQKotbTmPG1dABdbnrB+5PRd0eqcG4OI4YACt /cp4D8E04HwgOrzYLlxB3MYBkA== X-Google-Smtp-Source: ABdhPJwEMxsQYo/vBEo2EEjYwbyFlf/ouOaj+8co0EtwTTo8fVUCOv2/cp9LCGFdxaK5KB/Cfq66OQ== X-Received: by 2002:a63:5d2:: with SMTP id 201mr780838pgf.12.1614901513302; Thu, 04 Mar 2021 15:45:13 -0800 (PST) Received: from ?IPv6:2600:380:707e:3fea:d1ed:f262:c787:7ca4? ([2600:380:707e:3fea:d1ed:f262:c787:7ca4]) by smtp.gmail.com with ESMTPSA id t23sm425614pgv.34.2021.03.04.15.45.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 04 Mar 2021 15:45:12 -0800 (PST) Content-Type: multipart/alternative; boundary=Apple-Mail-C456C2B2-707D-4C44-A899-22A967BEB649 Content-Transfer-Encoding: 7bit From: Eric Voskuil Mime-Version: 1.0 (1.0) Date: Thu, 4 Mar 2021 15:45:11 -0800 Message-Id: <847E2B79-4215-4528-A494-C676457B03F8@voskuil.org> References: In-Reply-To: To: Vincent Truong , Bitcoin Protocol Discussion X-Mailer: iPhone Mail (18D52) Subject: Re: [bitcoin-dev] Making the case for flag day activation of taproot X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Mar 2021 23:45:16 -0000 --Apple-Mail-C456C2B2-707D-4C44-A899-22A967BEB649 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mike was wrong about a number of things, and in the end decided that Bitcoin= was pointless, as people could not defend it against the state. He used thi= s as the basis for his defense of large blocks and centralized mining. When t= hat didn=E2=80=99t work out he quit, to work on centralized systems. People can of course do what they want, but unnecessarily splitting from the= existing chain reduces utility, which seems counterproductive. BCH is a goo= d example of this. Compatibility isn=E2=80=99t =E2=80=9Cdangerous=E2=80=9D. Old nodes don=E2=80= =99t need to know what new nodes are doing. If the person operating one need= s to validate a taproot payment to himself, he would have to upgrade. Otherw= ise it=E2=80=99s of no consequence, his node is economic (relevant) only in r= elation to the legacy payments he receives, which he can continue to validat= e. e > On Mar 4, 2021, at 15:22, Vincent Truong via bitcoin-dev wrote: >=20 > =EF=BB=BF >=20 > I must remind everyone of Mike Hearn's proposal not many years ago, which o= ught to be on everyone's mind right now. "Every soft fork should be a hard f= ork, and that soft forks are inherently dangerous because old nodes are tric= ked to not know what the new nodes are doing" (paraphrased). Whether taproot= is dangerous is not the issue; whether old nodes should or should not ignor= e new rules, is. >=20 > Flag day activation of a soft fork is basically proposing a hard fork, but= without saying or doing it at full commitment. May as well just do a flag d= ay hard fork. >=20 > Bitcoin Cash/Bcash has already tested for you how a market driven hard for= k should work. Bitcoin didn't die. We should be learning from the mistakes m= ade in those early hard forks to not repeat them when Bitcoin hard forks - l= ike having replay protection written before deployment. >=20 > If it's not evident within the first 6-12 blocks which fork is winning, th= en the market will trade it out. Just like what happened with Bitcoin Cash/B= cash. >=20 > Not only that, it stops the drama of Bitcoin Core devs from "being in cont= rol" of consensus. The market will choose, you just create the safest way fo= r users to participate. The market is consensus. Rough consensus is just the= conversation starter. >=20 >=20 >> On Thu, 4 Mar 2021, 1:39 am Chris Belcher via bitcoin-dev, wrote: >> The bitcoin world is close to total gridlock on the question of how to >> activate taproot. There's no agreement on activation[1][2], and if an >> agreement isn't reached then nothing happens. That would be really >> terrible because we'd miss out on the benefits of taproot and >> potentially other future soft forks. >>=20 >> A major problem with BIP8 is that it would result to a situation where >> different parts of the bitcoin ecosystem run different consensus rules. >> Some people will run LOT=3Dtrue and others LOT=3Dfalse. Worst of all, it >> becomes vulnerable to a twitter/reddit/social media blitz which could >> attempt to move the date of miner activation around. >>=20 >> Twitter and reddit drama provide a perfect cover for social attacks on >> bitcoin. >>=20 >> Forced signalling leads to brinksmanship. Where two or more sides >> (backed up by social media drama) enter into a game of chicken with >> deployed nodes. If one of them doesn't concede then we get a damaging >> chain split. And the $1 trillion in value that the bitcoin network >> protects is put at risk. =46rom the point of view of a miner or big >> exchange stuck in the middle, if they look at the ecosystem of twitter >> and reddit (especially if you think about all the problems with bots and >> sockpuppets) they have no idea which consensus rules they should >> actually follow and exactly what date they take effect. Miners, >> exchanges, merchants and the rest of the ecosystem exist to serve their >> customers and users, and trouble happens when they don't know what their >> customers really want. Social media attacks are not just a theoretical >> concern; back during the block size drama, the bitcoin reddits were >> targetted by bots, sockpuppets and brigading[3]. >>=20 >> Enter flag day activation. With a flag day there can be no >> brinksmanship. A social media blitz cant do anything except have its own >> followers fork away. Crucially, miner signalling cant be used to change >> the activation date for nodes that didn't choose to and just passively >> follow signalling. Changing the activation date requires all those users >> to actually run different node software. >>=20 >> Flag day activation works simply: we choose a block height and after >> that block height the new taproot rules become enforced. >>=20 >>=20 >> Supporters of the permissionless, "users rule" approach of LOT=3Dtrue >> should be happy because it completely takes miners out of activation. >>=20 >> Supporters of the safe, conservative approach of LOT=3Dfalse can be made >> happy with a few ways of derisking: >>=20 >> * Getting mining pools, businesses and users to look at the code and ask >> if they (a) think its either neutral or good for their business or use >> case and (b) they believe others view it similarly and that the >> consensus changes proposed have a good social consensus around them. >>=20 >> * Setting the flag day far in the future (18 months or 2 years in the >> original proposal[3]). >>=20 >>=20 >> =3D=3D What if flag day activation is used maliciously? =3D=3D >>=20 >> What if one day the Core developer team is co-opted and uses the flag >> day method to do something bad? For example, a soft fork where sending >> to certain blacklisted addresses is not allowed. The bitcoin user >> community who wants to resist this can create their own >> counter-soft-fork full node, where the first block after the flag day >> MUST pay to one of those addresses on the blacklist. This forces a chain >> split between the censorship rules and the no-censorship rules, and its >> pretty obvious that the real bitcoin which most people follow will be >> the chain without censorship. >>=20 >> For example, if a group of users didn't agree with taproot then they >> could create their own counter-flag-day-activation which requires that a >> transaction is included that does an invalid-spend from a taproot output >> in the first block after the flag day height. >>=20 >> This is always possible with any user activated soft fork. In BIP8 >> LOT=3Dtrue it could be done by rejecting block headers with certain >> version bits signalled. >>=20 >>=20 >> =3D=3D But it will take so long! =3D=3D >>=20 >> We seem to be at a deadlock now. This will take less time than any other >> method, because other methods might never happen. BIP8 is dead and from >> what I see there's no other credible plan. >>=20 >> We've already waited years for taproot. I remember listening to talks >> about bitcoin from 2015 of people discussing Schnorr signatures. And >> given how slow segwit and p2sh adoption were its pretty likely that >> we'll waiting a while for taproot to be actually adopted. >>=20 >>=20 >> =3D=3D A social media blitz could still try to activate it early =3D=3D >>=20 >> The brinksmanship only works because miner signalling can make many >> other nodes activate early, even if those other nodes didn't do >> anything. There can't be a game of chicken that puts the bitcoin network >> at risk. >>=20 >> If a group of people did adopt alternative node software which has a >> shorter flag day, they actually have a risk of slow blocks. Because they >> cant trick or force any other nodes to come along with them, they are >> likely to only have a small economy and therefore would lose a lot of >> hashrate. Imagine trading bitcoins for cash in person and instead of >> waiting 10 minutes for a confirmation you have to wait 3 hours because >> the blocks are slow. >>=20 >> Also, the argument for downloading and running a different software only >> to speed up activation is pretty weak. Taproot would activate in ~18 >> months, so why are you so impatient that you need it in 6 months? And >> risk slow blocks for you while doing so? The big difference with BIP148 >> the segwit UASF, is that people *had to* run some other software >> otherwise they would get *no soft fork at all*. >>=20 >>=20 >> =3D=3D Without miner signalling how do we know the new rules are even >> activated? =3D=3D >>=20 >> When did you see miners signalling their support for the inflation schedu= le? >>=20 >> Bitcoin's rules are enforced by wallets backed by full nodes. You'll >> always know if your own full node is enforcing the new rules. The thing >> that matters isnt miner signalling but your own full node, and the nodes >> of those you trade with. >>=20 >> Flag day activation is quite similar to the way block reward halvenings >> work. At and after block height 630000 miners are only allowed to create >> 6.25 BTC rather than 12.5 BTC. Everyone knows that if miners continued >> to create 12.5 BTC or more they would be unable to sell or spend those >> coins anywhere. >>=20 >> In 2017 when segwit was being activated people created a huge list of >> various bitcoin companies, merchants and wallets: >> https://web.archive.org/web/20171228111943/https://bitcoincore.org/en/seg= wit_adoption/ >> Looking at that list, you would know that if someone stole coins from a >> segwit address they would be unable to deposit them in many exchanges >> and merchants: Bitrefill, Bitstamp, Kraken, Localbitcoins, Paxful, >> Vaultoro, HitBTC, etc. >>=20 >> Then what happened is only a month after S2X was beaten this guy moved >> 40000 BTC to a segwit address, confident about the power of the network >> to protect his coins. >> https://old.reddit.com/r/Bitcoin/comments/7tcmi4/bitcointalks_famous_user= _loaded_moved_his_40k_btc/ >>=20 >> If there's ever any doubt about flag day activation we can always draw >> up a similar list, although if there's broad consensus about it then >> there's no reason why bitcoin businesses wouldn't upgrade to the latest >> Core, like they did with every other previous soft fork. >>=20 >>=20 >> =3D=3D This gives the impression that Core developers control the protoco= l =3D=3D >>=20 >> This objection has a mirror image argument: BIP8 with LOT=3Dfalse gives >> the impression that miners control the protocol(!) >>=20 >> Eventually some group has to make a decision. We will ask the bitcoin >> economy and users what they think of flag day activation. It's pretty >> clear that nobody seriously objects to taproot, and as described above >> if Core developers did something evil the community could resist it with >> a counter-flag-day-activation. >>=20 >>=20 >>=20 >> =3D=3D TL;DR =3D=3D >>=20 >> I believe flag day activation is the way forward. It should answer all >> the objections and risks which make other methods too controversial. >> Let's go ahead and bring taproot to bitcoin! >>=20 >>=20 >>=20 >> =3D=3D References =3D=3D >>=20 >> [1] - >> https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-February/018= 498.html >> luke-jr posts saying LOT=3Dfalse in his view reintroduces a bug, he= >> compares it to introducing an inflation bug and just hoping that miners >> will not exploit it. >>=20 >> [2] - >> https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-February/018= 425.html >> This whole thread has many people disagreeing with LOT=3Dtrue >>=20 >> [3] - >> https://old.reddit.com/r/Bitcoin/comments/4biob5/research_into_instantane= ous_vote_behavior_in/ >>=20 >> https://old.reddit.com/r/Bitcoin/comments/3v04pd/can_we_please_have_a_civ= il_discussion_about/cxjnz1d/?context=3D1 >>=20 >> https://old.reddit.com/r/Bitcoin/comments/41ykkt/members_trying_to_destro= y_bitcoin_on_this_thread/cz6ccka/?context=3D3 >>=20 >> [4] - >> https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-February/018= 495.html >> Matt Corallo's flag day activation proposal >> _______________________________________________ >> bitcoin-dev mailing list >> bitcoin-dev@lists.linuxfoundation.org >> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev > _______________________________________________ > bitcoin-dev mailing list > bitcoin-dev@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev --Apple-Mail-C456C2B2-707D-4C44-A899-22A967BEB649 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Mike was wrong about a num= ber of things, and in the end decided that Bitcoin was pointless, as people c= ould not defend it against the state. He used this as the basis for his defe= nse of large blocks and centralized mining. When that didn=E2=80=99t work ou= t he quit, to work on centralized systems.

<= div dir=3D"ltr">People can of course do what they want, but unnecessarily sp= litting from the existing chain reduces utility, which seems counterproducti= ve. BCH is a good example of this.

Compatibility isn=E2=80=99t =E2=80=9Cdangerous=E2=80=9D. Old nodes don= =E2=80=99t need to know what new nodes are doing. If the person operating on= e needs to validate a taproot payment to himself, he would have to upgrade. O= therwise it=E2=80=99s of no consequence, his node is economic (relevant) onl= y in relation to the legacy payments he receives, which he can continue to v= alidate.

e

On Mar 4, 2021, at 15:22, Vincent Truong= via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:
=EF=BB=BF

I must remind ev= eryone of Mike Hearn's proposal not many years ago, which ought to be on eve= ryone's mind right now. "Every soft fork should be a hard fork, and that sof= t forks are inherently dangerous because old nodes are tricked to not know w= hat the new nodes are doing" (paraphrased). Whether taproot is dangerous is n= ot the issue; whether old nodes should or should not ignore new rules, is.

Flag day activation of a s= oft fork is basically proposing a hard fork, but without saying or doing it a= t full commitment. May as well just do a flag day hard fork.

Bitcoin Cash/Bcash has alrea= dy tested for you how a market driven hard fork should work. Bitcoin didn't d= ie. We should be learning from the mistakes made in those early hard forks t= o not repeat them when Bitcoin hard forks - like having replay protection wr= itten before deployment.

= If it's not evident within the first 6= -12 blocks which fork is winning, then the market will trade it out. Just li= ke what happened with Bitcoin Cash/Bcash.
=
Not only that, it stops the drama of Bitcoin Cor= e devs from "being in control" of consensus. The market will choose, you jus= t create the safest way for users to participate. The market is consensus. R= ough consensus is just the conversation starter.

=

On Thu, 4 Mar 2021, 1:39 am Chris Belcher via bitcoin-dev, &= lt;bitcoin-dev@lists.linuxfoundation.org> wrote:
The bitcoin world is close to total gri= dlock on the question of how to
activate taproot. There's no agreement on activation[1][2], and if an
agreement isn't reached then nothing happens. That would be really
terrible because we'd miss out on the benefits of taproot and
potentially other future soft forks.

A major problem with BIP8 is that it would result to a situation where
different parts of the bitcoin ecosystem run different consensus rules.
Some people will run LOT=3Dtrue and others LOT=3Dfalse. Worst of all, it
= becomes vulnerable to a twitter/reddit/social media blitz which could
attempt to move the date of miner activation around.

Twitter and reddit drama provide a perfect cover for social attacks on
bitcoin.

Forced signalling leads to brinksmanship. Where two or more sides
(backed up by social media drama) enter into a game of chicken with
deployed nodes. If one of them doesn't concede then we get a damaging
chain split. And the $1 trillion in value that the bitcoin network
protects is put at risk. =46rom the point of view of a miner or big
exchange stuck in the middle, if they look at the ecosystem of twitter
and reddit (especially if you think about all the problems with bots and
= sockpuppets) they have no idea which consensus rules they should
actually follow and exactly what date they take effect. Miners,
exchanges, merchants and the rest of the ecosystem exist to serve their
customers and users, and trouble happens when they don't know what their
= customers really want. Social media attacks are not just a theoretical
concern; back during the block size drama, the bitcoin reddits were
targetted by bots, sockpuppets and brigading[3].

Enter flag day activation. With a flag day there can be no
brinksmanship. A social media blitz cant do anything except have its own
= followers fork away. Crucially, miner signalling cant be used to change
the activation date for nodes that didn't choose to and just passively
follow signalling. Changing the activation date requires all those users
= to actually run different node software.

Flag day activation works simply: we choose a block height and after
that block height the new taproot rules become enforced.


Supporters of the permissionless, "users rule" approach of LOT=3Dtrue
should be happy because it completely takes miners out of activation.

Supporters of the safe, conservative approach of LOT=3Dfalse can be made
= happy with a few ways of derisking:

* Getting mining pools, businesses and users to look at the code and ask
= if they (a) think its either neutral or good for their business or use
case and (b) they believe others view it similarly and that the
consensus changes proposed have a good social consensus around them.

* Setting the flag day far in the future (18 months or 2 years in the
original proposal[3]).


=3D=3D What if flag day activation is used maliciously? =3D=3D

What if one day the Core developer team is co-opted and uses the flag
day method to do something bad? For example, a soft fork where sending
to certain blacklisted addresses is not allowed. The bitcoin user
community who wants to resist this can create their own
counter-soft-fork full node, where the first block after the flag day
MUST pay to one of those addresses on the blacklist. This forces a chain
= split between the censorship rules and the no-censorship rules, and its
pretty obvious that the real bitcoin which most people follow will be
the chain without censorship.

For example, if a group of users didn't agree with taproot then they
could create their own counter-flag-day-activation which requires that a
= transaction is included that does an invalid-spend from a taproot output
= in the first block after the flag day height.

This is always possible with any user activated soft fork. In BIP8
LOT=3Dtrue it could be done by rejecting block headers with certain
version bits signalled.


=3D=3D But it will take so long! =3D=3D

We seem to be at a deadlock now. This will take less time than any other
= method, because other methods might never happen. BIP8 is dead and from
what I see there's no other credible plan.

We've already waited years for taproot. I remember listening to talks
about bitcoin from 2015 of people discussing Schnorr signatures. And
given how slow segwit and p2sh adoption were its pretty likely that
we'll waiting a while for taproot to be actually adopted.


=3D=3D A social media blitz could still try to activate it early =3D=3D

The brinksmanship only works because miner signalling can make many
other nodes activate early, even if those other nodes didn't do
anything. There can't be a game of chicken that puts the bitcoin network
= at risk.

If a group of people did adopt alternative node software which has a
shorter flag day, they actually have a risk of slow blocks. Because they
= cant trick or force any other nodes to come along with them, they are
likely to only have a small economy and therefore would lose a lot of
hashrate. Imagine trading bitcoins for cash in person and instead of
waiting 10 minutes for a confirmation you have to wait 3 hours because
the blocks are slow.

Also, the argument for downloading and running a different software only
= to speed up activation is pretty weak. Taproot would activate in ~18
months, so why are you so impatient that you need it in 6 months? And
risk slow blocks for you while doing so? The big difference with BIP148
the segwit UASF, is that people *had to* run some other software
otherwise they would get *no soft fork at all*.


=3D=3D Without miner signalling how do we know the new rules are even
activated? =3D=3D

When did you see miners signalling their support for the inflation schedule?=

Bitcoin's rules are enforced by wallets backed by full nodes. You'll
always know if your own full node is enforcing the new rules. The thing
that matters isnt miner signalling but your own full node, and the nodes
= of those you trade with.

Flag day activation is quite similar to the way block reward halvenings
work. At and after block height 630000 miners are only allowed to create
= 6.25 BTC rather than 12.5 BTC. Everyone knows that if miners continued
to create 12.5 BTC or more they would be unable to sell or spend those
coins anywhere.

In 2017 when segwit was being activated people created a huge list of
various bitcoin companies, merchants and wallets:
https://web.archive.org/web/20171228111943/https://bitcoincore.org/en/= segwit_adoption/
Looking at that list, you would know that if someone stole coins from a
segwit address they would be unable to deposit them in many exchanges
and merchants: Bitrefill, Bitstamp, Kraken, Localbitcoins, Paxful,
Vaultoro, HitBTC, etc.

Then what happened is only a month after S2X was beaten this guy moved
40000 BTC to a segwit address, confident about the power of the network
to protect his coins.
https://old.reddit.com/r/Bitcoin/comments/7tcmi4/bitcoint= alks_famous_user_loaded_moved_his_40k_btc/

If there's ever any doubt about flag day activation we can always draw
up a similar list, although if there's broad consensus about it then
there's no reason why bitcoin businesses wouldn't upgrade to the latest
Core, like they did with every other previous soft fork.


=3D=3D This gives the impression that Core developers control the protocol =3D= =3D

This objection has a mirror image argument: BIP8 with LOT=3Dfalse gives
the impression that miners control the protocol(!)

Eventually some group has to make a decision. We will ask the bitcoin
economy and users what they think of flag day activation. It's pretty
clear that nobody seriously objects to taproot, and as described above
if Core developers did something evil the community could resist it with
= a counter-flag-day-activation.



=3D=3D TL;DR =3D=3D

I believe flag day activation is the way forward. It should answer all
the objections and risks which make other methods too controversial.
Let's go ahead and bring taproot to bitcoin!



=3D=3D References =3D=3D

[1] -
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-February/01849= 8.html
      luke-jr posts saying LOT=3Dfalse in his view reintroduc= es a bug, he
compares it to introducing an inflation bug and just hoping that miners
will not exploit it.

[2] -
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-February/01842= 5.html
      This whole thread has many people disagreeing with LOT=3D= true

[3] -
https://old.reddit.com/r/Bitcoin/comments/4biob5/research_into= _instantaneous_vote_behavior_in/

https://old.reddit.com/r/Bitcoin/comments/3= v04pd/can_we_please_have_a_civil_discussion_about/cxjnz1d/?context=3D1
https://old.reddit.com/r/Bitcoin/comme= nts/41ykkt/members_trying_to_destroy_bitcoin_on_this_thread/cz6ccka/?context= =3D3

[4] -
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-February/01849= 5.html
      Matt Corallo's flag day activation proposal
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