From: Peter Todd <pete@petertodd•org>
To: Mark Friedenbach <mark@friedenbach•org>
Cc: Bitcoin Development <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] The relationship between Proof-of-Publication and Anti-Replay Oracles
Date: Sun, 21 Dec 2014 00:52:20 -0500 [thread overview]
Message-ID: <20141221055220.GB8255@savin.petertodd.org> (raw)
In-Reply-To: <CAOG=w-vrHPY1aCNndmoW9QyCh9XnWyv8uZn2PyjZ6rNg2MoSSw@mail.gmail.com>
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On Sun, Dec 21, 2014 at 11:57:51AM +0800, Mark Friedenbach wrote:
> On Sat, Dec 20, 2014 at 10:48 PM, Peter Todd <pete@petertodd•org> wrote:
>
> > However the converse is not possible: anti-replay cannot be used to
> > implement proof-of-publication. Knowing that no conflicting message
> > exists says nothing about who be in posession of that message, or
> > indeed, any message at all. Thus anti-replay is not sufficient to
> > implement other uses of proof-of-publication such as decentralized
> > exchange³.
> >
>
> I think you are trying to say something more specific / limited than that,
> and I suggest you adjust your wording accordingly. Decentralized exchange
> would be possible today with vanilla bitcoin using SIGHASH_SINGLE if only
> the protocol supported multiple validated assets (which it could, but
> doesn't). Rather straightforward further extensions to the protocol would
> enable market participants to use a wider class of orders, as well as
> enable the buyer rather than the seller to dictate order sizes via partial
> redemption, as we demonstrate in our Freimarkets paper.
Do you realise that all those Freimarket's uses are either based on
proof-of-publication, or insecure due to sybil attacks?
--
'peter'[:-1]@petertodd.org
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next prev parent reply other threads:[~2014-12-21 5:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-12 9:05 [Bitcoin-development] Setting the record straight on Proof-of-Publication Peter Todd
2014-12-12 12:25 ` Gareth Williams
2014-12-12 17:04 ` Alex Mizrahi
[not found] ` <CAOG=w-v3qjG3zd_WhfFU-OGnsHZEuYvY82eL4GqcdgY6np5bvA@mail.gmail.com>
2014-12-12 17:50 ` Alex Mizrahi
2014-12-13 13:32 ` Gareth Williams
2014-12-15 4:52 ` Peter Todd
2014-12-17 11:55 ` Gareth Williams
2014-12-21 6:12 ` Peter Todd
2014-12-15 4:17 ` Peter Todd
2014-12-12 13:41 ` odinn
2014-12-12 14:17 ` Justus Ranvier
2014-12-15 4:59 ` Peter Todd
2014-12-17 1:16 ` odinn
2014-12-20 14:48 ` [Bitcoin-development] The relationship between Proof-of-Publication and Anti-Replay Oracles Peter Todd
[not found] ` <CAOG=w-vrHPY1aCNndmoW9QyCh9XnWyv8uZn2PyjZ6rNg2MoSSw@mail.gmail.com>
2014-12-21 5:52 ` Peter Todd [this message]
[not found] ` <CAOG=w-tZke--6OsqNjJhE9SOdCwdZYZM8iz1VBTFziegt9UZWw@mail.gmail.com>
2014-12-21 7:01 ` Peter Todd
[not found] ` <CAOG=w-s1_VXJAKxBpMOK=B50qnHjxSe4J=vwwSfFPRz0_Cb9rA@mail.gmail.com>
2014-12-21 15:32 ` Peter Todd
2014-12-21 11:25 ` Jorge Timón
2014-12-21 16:07 ` Peter Todd
2014-12-21 19:39 ` Jorge Timón
2014-12-21 10:01 ` Adam Back
2014-12-21 15:29 ` Peter Todd
2014-12-21 13:49 ` paul snow
2014-12-21 15:22 ` Peter Todd
2014-12-21 15:41 ` paul snow
2014-12-22 0:11 ` Peter Todd
2015-01-06 11:03 ` joliver
2014-12-22 20:05 ` Adam Back
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