Ok, why don't fix this in the spec for now, by defining a fixed expiry time. In the EU, most products are covered by a 2 years warranty, so it seems appropriate to pick 2.5 years (30 months) -- allowing for some time to ship the product back and forth.
On 03/28/2014 12:31 PM, Mike Hearn wrote: > On Fri, Mar 28, 2014 at 12:25 PM, Andreas Schildbach > <andr...@schildbach.de <mailto:andr...@schildbach.de>> wrote: > > However, I don't see how PaymentDetails can be an answer. None of the > fields (other than outputs and network) can be known in advance (at the > time of the initial payment). > > > You don't need all the fields indeed, but they're mostly optional > (except time). So for the refund you'd fill out: > > outputs (same as today) > time > expiry_time > > You're probably aiming for an expires field? How would you refund a > payment after expiry? > > > It'd have to be ad-hoc at that point. OK, you don't get the nice UI that > the refund field provides. Oh well. It should be rare to get refunds > very very late after the purchase. > > > Btw. another problem is that the refund address is currently > unprotected. > > > Yes indeed as is the rest of the Payment structure. We talked about > signing it with one of the keys that's signing the Bitcoin transaction > as well. But it seems like a bit overkill. Usually it'll be submitted > over HTTPS or a (secured!) Bluetooth channel though so tampering with it > should not be possible. > > However this does raise the question of whether a refund should be a > full blown PaymentRequest with optional PKI signing. Normally, I think, > a seller does not know or care about the identity of a buyer for > refunds, outside of their own tracking system. > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > ------------------------------------------------------------------------------ _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
