Robin Ranjit Singh Chauhan [ARCHIVE] on Nostr: 📅 Original date posted:2013-12-23 📝 Original message:Mark, thank you for a very ...
📅 Original date posted:2013-12-23
📝 Original message:Mark, thank you for a very clear explanation of why this proposal would be
dangerous.
What I have noted in many discussions regarding blockchain security and
proof-or-work schemes, is there is a wide gulf between those few people who
can clearly reason about it, and those who have a lot trouble with it (I
mostly fall into the later camp).
I wonder if anyone can point to resources who can help "the rest of us"
reason clearly about these types of proposals, prior to bringing them to
this list or a senior dev.
Ideally it would illustrate various past proposals, explain why they would
and wouldnt work, and build up some fundamental concepts, like a "Newtons
laws of blockchain security" that would help us evaluate such ideas on our
own.
Blockchain stuff is often counterintuitive.
On Sun, Dec 22, 2013 at 7:22 PM, Mark Friedenbach <mark at monetize.io> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Ryan, these sort of adjustments introduce security risks. If you were
> isolated from the main chain by a low-hashpower attacker, how would
> you know? They'd need just three days without you noticing that
> network block generation has stalled - maybe they wait for a long
> weekend - then after that the block rate is normal but completely
> controlled by the attacker (and isolated from mainnet).
>
> There are fast acting alternative difficulty adjustment algorithms
> being explored by some alts, such as the 9-block interval, 144-block
> window, Parks-McClellan FIR filter used by Freicoin to recover from
> just such a mining bubble. If it were to happen to bitcoin, there
> would be sophisticated alternative to turn to, and enough time to make
> the change.
>
> On 12/22/2013 07:10 PM, Ryan Carboni wrote:
> > I think Bitcoin should have a sanity check: after three days if
> > only four blocks have been mined, difficulty should be adjusted
> > downwards.
> >
> > This might become important in the near future. I project a
> > Bitcoin mining bubble.
> >
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>
> ------------------------------------------------------------------------------
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> _______________________________________________
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> Bitcoin-development at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>
--
Robin R Chauhan
CEO, Pathway Intelligence Inc
robin at pathwayi.com
Office: 778-588-6217 Ext. 201
Cell: 604-865-0517
Fax: 778-588-1042
http://pathwayi.com/
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📝 Original message:Mark, thank you for a very clear explanation of why this proposal would be
dangerous.
What I have noted in many discussions regarding blockchain security and
proof-or-work schemes, is there is a wide gulf between those few people who
can clearly reason about it, and those who have a lot trouble with it (I
mostly fall into the later camp).
I wonder if anyone can point to resources who can help "the rest of us"
reason clearly about these types of proposals, prior to bringing them to
this list or a senior dev.
Ideally it would illustrate various past proposals, explain why they would
and wouldnt work, and build up some fundamental concepts, like a "Newtons
laws of blockchain security" that would help us evaluate such ideas on our
own.
Blockchain stuff is often counterintuitive.
On Sun, Dec 22, 2013 at 7:22 PM, Mark Friedenbach <mark at monetize.io> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Ryan, these sort of adjustments introduce security risks. If you were
> isolated from the main chain by a low-hashpower attacker, how would
> you know? They'd need just three days without you noticing that
> network block generation has stalled - maybe they wait for a long
> weekend - then after that the block rate is normal but completely
> controlled by the attacker (and isolated from mainnet).
>
> There are fast acting alternative difficulty adjustment algorithms
> being explored by some alts, such as the 9-block interval, 144-block
> window, Parks-McClellan FIR filter used by Freicoin to recover from
> just such a mining bubble. If it were to happen to bitcoin, there
> would be sophisticated alternative to turn to, and enough time to make
> the change.
>
> On 12/22/2013 07:10 PM, Ryan Carboni wrote:
> > I think Bitcoin should have a sanity check: after three days if
> > only four blocks have been mined, difficulty should be adjusted
> > downwards.
> >
> > This might become important in the near future. I project a
> > Bitcoin mining bubble.
> >
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.14 (GNU/Linux)
> Comment: GPGTools - http://gpgtools.org
> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
>
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> =5Q2H
> -----END PGP SIGNATURE-----
>
>
> ------------------------------------------------------------------------------
> 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 at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>
--
Robin R Chauhan
CEO, Pathway Intelligence Inc
robin at pathwayi.com
Office: 778-588-6217 Ext. 201
Cell: 604-865-0517
Fax: 778-588-1042
http://pathwayi.com/
---------------------------------------------------------------------
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information by anyone other than the intended recipient is prohibited.
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reply to the sender and delete this information from your system.
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