On 02/10/2015 02:41 AM, Natanael wrote: > Den 10 feb 2015 11:34 skrev "MⒶrtin HⒶboⓋštiak" > >: >> >> 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? > > That's not what this is about. > > BIP70 isn't just payment, it is about communication the terms of the sale. 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! > > 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