Bitcoin P2P e-cash paper

[Nicolas Williams]

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
-- 

---------------------------------------------------------------------
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to majordomo at metzdowd.com