[137900] in cryptography@c2.net mail archive
Re: Bitcoin P2P e-cash paper
daemon@ATHENA.MIT.EDU (Nicolas Williams)
Tue Nov 18 17:51:34 2008
Date: Mon, 17 Nov 2008 15:54:28 -0600
From: Nicolas Williams <Nicolas.Williams@sun.com>
To: Ray Dillinger <bear@sonic.net>
Cc: satoshi@vistomail.com, cryptography@metzdowd.com, jamesd@echeque.com
In-Reply-To: <1226732661.4127.85.camel@localhost>
On Fri, Nov 14, 2008 at 11:04:21PM -0800, Ray Dillinger wrote:
> On Sat, 2008-11-15 at 12:43 +0800, Satoshi Nakamoto wrote:
> > > If someone double spends, then the transaction record
> > > can be unblinded revealing the identity of the cheater.
> >
> > Identities are not used, and there's no reliance on recourse. It's all prevention.
>
> Okay, that's surprising. If you're not using buyer/seller
> identities, then you are not checking that a spend is being made
> by someone who actually is the owner of (on record as having
> recieved) the coin being spent.
How do identities help? It's supposed to be anonymous cash, right? And
say you identify a double spender after the fact, then what? Perhaps
you're looking at a disposable ID. Or perhaps you can't chase them
down.
Double spend detection needs to be real-time or near real-time.
Nico
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