Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WXHVZ-0003c1-1I for bitcoin-development@lists.sourceforge.net; Mon, 07 Apr 2014 21:55:13 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.212.182 as permitted sender) client-ip=209.85.212.182; envelope-from=ricardojdfilipe@gmail.com; helo=mail-wi0-f182.google.com; Received: from mail-wi0-f182.google.com ([209.85.212.182]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WXHVX-0006y9-1b for bitcoin-development@lists.sourceforge.net; Mon, 07 Apr 2014 21:55:13 +0000 Received: by mail-wi0-f182.google.com with SMTP id d1so308944wiv.3 for ; Mon, 07 Apr 2014 14:55:04 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.180.37.178 with SMTP id z18mr28126592wij.46.1396907704809; Mon, 07 Apr 2014 14:55:04 -0700 (PDT) Received: by 10.217.128.207 with HTTP; Mon, 7 Apr 2014 14:55:04 -0700 (PDT) In-Reply-To: <20140407200838.GR3180@nl.grid.coop> References: <20140407200838.GR3180@nl.grid.coop> Date: Mon, 7 Apr 2014 22:55:04 +0100 Message-ID: From: Ricardo Filipe To: Troy Benjegerdes Content-Type: text/plain; charset=ISO-8859-1 X-Spam-Score: -1.6 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (ricardojdfilipe[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1WXHVX-0006y9-1b Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Draft BIP for seamless website authentication using Bitcoin address X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Apr 2014 21:55:13 -0000 2014-04-07 21:08 GMT+01:00 Troy Benjegerdes : > I have to play dissenter here again.. > > Using a bitcoin address as a persistent identity key is the first real-world > use of Bitcoin that I can imagine will make it a 'killer app' that everyone > and their grandma will want to use. > I am of the same opinion, although i understand Gavin's point. Would the multisig seed work for this purpose? I have been toying with this idea and I think that for this BIP to make sense it would require a "root" key as your login. Then if you need to make transfers the system would request you to create and associate a new key to your account for each purchase (signing the new key with the root one for example).