Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1VzMvf-00028K-AL for bitcoin-development@lists.sourceforge.net; Sat, 04 Jan 2014 08:49:59 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.160.48 as permitted sender) client-ip=209.85.160.48; envelope-from=david.vorick@gmail.com; helo=mail-pb0-f48.google.com; Received: from mail-pb0-f48.google.com ([209.85.160.48]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1VzMve-0005jS-67 for bitcoin-development@lists.sourceforge.net; Sat, 04 Jan 2014 08:49:59 +0000 Received: by mail-pb0-f48.google.com with SMTP id md12so16508188pbc.21 for ; Sat, 04 Jan 2014 00:49:52 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.68.234.67 with SMTP id uc3mr88405221pbc.27.1388825392240; Sat, 04 Jan 2014 00:49:52 -0800 (PST) Received: by 10.68.242.197 with HTTP; Sat, 4 Jan 2014 00:49:52 -0800 (PST) In-Reply-To: <9aaa913f73f45db41d94d93d02eed3fa@astutium.com> References: <20131230232225.GA10594@tilt> <201312310114.05600.luke@dashjr.org> <9aaa913f73f45db41d94d93d02eed3fa@astutium.com> Date: Sat, 4 Jan 2014 03:49:52 -0500 Message-ID: From: David Vorick To: rob.golding@astutium.com Content-Type: multipart/alternative; boundary=047d7b33d7a828dfa804ef211c8c X-Spam-Score: -0.6 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (david.vorick[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 1.0 HTML_MESSAGE BODY: HTML included in message -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1VzMve-0005jS-67 Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Merge mining X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 Jan 2014 08:49:59 -0000 --047d7b33d7a828dfa804ef211c8c Content-Type: text/plain; charset=ISO-8859-1 If you have the resources to attack one of the bigger altcoins, you probably have a significant investment in the cryptocurrency space, and a significant interest in protecting it. Compromising even something like dogecoin would cause a lot of questions to be raised and likely drop the value of bitcoin as well as all the cryptocurrencies using the same work function as dogecoin. Right now, there's very little benefit to attacking a significant currency, because it would be very expensive and likely traumatize the whole system. Unless it's some power like the NSA, I don't think there's much to worry about. On Tue, Dec 31, 2013 at 2:38 AM, wrote: > > But there's so much 'dry powder' out there (GPUs), I wonder if *not* > > supporting merge-mining is any better? At least the attacker has to do > > some unique PoW, so you hope it's costing them something. > > With lots of people having access to 100TH+ there's not really much > 'cost' to doing a 51% attack on an alt-coin beyond a short-term > diversion away from 'profitable' mining. > > At least by supporting merged mining, more miners are likely to > 'support' multiple coin types, thus making a 51% attack from an > individual/group less straightforward. > > >> The rational decision for a non-scam altcoin, is to take advantage of > >> merged mining to get as much security as possible. > > Exactly. > > Rob > > > ------------------------------------------------------------------------------ > Rapidly troubleshoot problems before they affect your business. Most IT > organizations don't have a clear picture of how application performance > affects their revenue. With AppDynamics, you get 100% visibility into your > Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics > Pro! > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > --047d7b33d7a828dfa804ef211c8c Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
If you have the resources to attack one of the bigger= altcoins, you probably have a significant investment in the cryptocurrency= space, and a significant interest in protecting it. Compromising even some= thing like dogecoin would cause a lot of questions to be raised and likely = drop the value of bitcoin as well as all the cryptocurrencies using the sam= e work function as dogecoin.

Right now, there's very little benefit to attacking a signifi= cant currency, because it would be very expensive and likely traumatize the= whole system. Unless it's some power like the NSA, I don't think t= here's much to worry about.


On Tue,= Dec 31, 2013 at 2:38 AM, <rob.golding@astutium.com>= wrote:
> But there's so mu= ch 'dry powder' out there (GPUs), I wonder if *not*
> supporting merge-mining is any better? At least the attacker has to do=
> some unique PoW, so you hope it's costing them something.

With lots of people having access to 100TH+ there's not really mu= ch
'cost' to doing a 51% attack on an alt-coin beyond a short-term
diversion away from 'profitable' mining.

At least by supporting merged mining, more miners are likely to
'support' multiple coin types, thus making a 51% attack from an
individual/group less straightforward.

>> The rational decision for a non-scam altcoin, is to take advantage= of
>> merged mining to get as much security as possible.

Exactly.

Rob

---------------------------------------------------------------------------= ---
Rapidly troubleshoot problems before they affect your business. Most IT
organizations don't have a clear picture of how application performance=
affects their revenue. With AppDynamics, you get 100% visibility into your<= br> Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynami= cs Pro!
http://pubads.g.doubleclick.net/gam= pad/clk?id=3D84349831&iu=3D/4140/ostg.clktrk
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