Re: [TSP] some considerations about ordering

[tho <thomas.fossati@xxxxxx>]

Jean-Marc,

On Thu, Dec 19, 2002 at 12:49:27PM +0100, Jean-Marc Desperrier wrote:
> >ordering is a crucial/indispensable property in many application contextes
> 
> Which one ?
>
> In which context has it a meaning below the accuracy level that will 
> stand in a litigation ?
> Where can we insure everybody that can raise a claim will hold a 
> time-stamp from the very same TSA so that ordering can be compared below 
> the accuracy level ?
> 
> There's nothing technically very difficult in raising the resolution of 
> the time-stamp quite below 1 second, but then propagation/treatment 
> delays will not garantee a fair treatment to everybody, it's very 
> possible then that you send your request first, but that it looses time 
> in a queue and it gets time-stamped later.
> 
> Your "many application contextes" are in fact a very closed world, if 
> none of these matters.
> 
> In truth, this application is not time-stamping, but attribution of a 
> numbered queue ticket.
> Is TSP the most adequate protocol then ?
> Should TSP aim to cover queue ticket distribution ?

These "many application contextes" arise everywhere there is a race 
between contending parties, e.g.:
- on line auction
- stock exchange 
- bid offer
- call for tenders
in which not only is important who's first in queue but also what 
he/she has declared <- that's where time-stamp is preferable over a 
queue ticket distribution protocol.


Thomas