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+Message-ID: <54D9E489.4080207@voskuil.org>

+Date: Tue, 10 Feb 2015 02:59:21 -0800

+From: Eric Voskuil <eric@voskuil.org>

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+Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>

+Subject: Re: [Bitcoin-development] Standardizing automatic pre-negotiation

+ of transaction terms with BIP70? (Emulating Amazon one-click purchase at

+ all merchants)

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+

+On 02/10/2015 02:41 AM, Natanael wrote:

+> Den 10 feb 2015 11:34 skrev "M=E2=92=B6rtin H=E2=92=B6bo=E2=93=8B=C5=A1=

+tiak"

+> <martin.habovstiak@gmail.com <mailto:martin.habovstiak@gmail.com>>:

+>>

+>> Why would anyone want to do anything about payment before choosing

+>> what he wants to buy and for what price? I've never used Amazon but

+>> isn't filling a form with shipping information enough?

+>=20

+> That's not what this is about.

+>=20

+> BIP70 isn't just payment, it is about communication the terms of the sa=

+le.

+

+Hi Natanael,

+

+BIP70 exists for seller non-repudiation (i.e. a cryptographically signed

+receipt for payment) and establishing strong seller identity in a

+face-to-face or other non-web scenario (since TLS doesn't help).

+Anything else is incidental.

+

+> Let's say you're visiting an international webshop. But they don't ship=

+

+> to your country. Wouldn't you want to know that before your start

+> filling the cart? With this, your wallet / browser extension could tell=

+

+> you right away that you can't shop there. No time wasted!

+>=20

+> That's just one requirement of many where you would benefit from being

+> told right away if it is acceptable for both parties or not.

+

+There's quite a bit that can be done with wallets and web sites, but

+personally I'd freak out if my wallet prompted me because I visited a

+web site.

+

+e

+

+

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