[Bitcoin-development] BIP 70 refund field

[Wladimir]

On Fri, Mar 28, 2014 at 12:25 PM, Andreas Schildbach
<andreas at schildbach.de>wrote:

> I see the problem.
>
> 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're probably aiming for an expires field? How would you refund a
> payment after expiry? Note its not your choice wether to refund a
> payment -- it can be ordered by a court years after the payment happened.
>

Communication between the merchant and buyer would be needed in this case.

I'd say that would be not unreasonable if something is to be refunded after
a year or more. After all, people may have moved, bank accounts changed,
even outside the bitcoin world.

It should probably not be accepted to set a very low expiration time for
the refund address, like <3 months, as it's as bad as not providing a
refund address at all and brings back all the pre-BIP70 confusion.

Wladimir
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