From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1UWfBj-0005Ob-4l for bitcoin-development@lists.sourceforge.net; Mon, 29 Apr 2013 03:55:39 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.148.108 as permitted sender) client-ip=62.13.148.108; envelope-from=pete@petertodd.org; helo=outmail148108.authsmtp.net; Received: from outmail148108.authsmtp.net ([62.13.148.108]) by sog-mx-4.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1UWfBh-0004Fp-S6 for bitcoin-development@lists.sourceforge.net; Mon, 29 Apr 2013 03:55:39 +0000 Received: from mail-c232.authsmtp.com (mail-c232.authsmtp.com [62.13.128.232]) by punt5.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id r3T3tT6J014866; Mon, 29 Apr 2013 04:55:29 +0100 (BST) Received: from savin (76-10-178-109.dsl.teksavvy.com [76.10.178.109]) (authenticated bits=128) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id r3T3tOjI033634 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Mon, 29 Apr 2013 04:55:26 +0100 (BST) Date: Sun, 28 Apr 2013 23:55:23 -0400 From: Peter Todd To: John Dillon Message-ID: <20130429035523.GA11611@savin> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="liOOAslEiF7prFVr" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Server-Quench: a0ac04b9-b080-11e2-b10b-0025903375e2 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aQdMdAsUGUUGAgsB AmUbW1BeVVh7W2Q7 bAxPbAVDY01GQQRq WVdMSlVNFUsqAngC QmFEKxlxdANFfDBx ZEJiWj4KXBUpdUIv S1MGFWUGeGZhPWIC AkFYJR5UcAFPdx9G aVd6AXFDAzANdhES HhM4ODE3eDlSNilR RRkIIFQOdA4wEyQi RhsPVT8uAVZNSSIp ZwQ8N1gREA4XNUk/ KjMA X-Authentic-SMTP: 61633532353630.1019:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 76.10.178.109/587 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Spam-Score: -1.5 (-) 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 SPF_PASS SPF: sender matches SPF record X-Headers-End: 1UWfBh-0004Fp-S6 Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Service bits for pruned nodes 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, 29 Apr 2013 03:55:39 -0000 --liOOAslEiF7prFVr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Apr 29, 2013 at 03:48:18AM +0000, John Dillon wrote: > We can build this stuff incrementally I'll agree. It won't be the case th= at one > in a thousand nodes serve up the part of the chain you need overnight. So= many > I am over engineering the solution with BitTorrent. I think that pretty much sums it up. With the block-range served in the anounce message you just need to find an annoucement with the right range, and at worst connect to a few more node to get what you need. It will be a long time before the bandwidth used for finding a node with the part of the chain that you need is a significant fraction of the load required for downloading the data itself. Remember that BitTorrent's DHT is a system giving you access to tens of petabytes worth of data. The Bitcoin blockchain on the other hand simply can't grow more than 57GiB per year. It's a cute idea though. Also, while we're talking about the initial download: http://blockchainbymail.com Lots of options out there. --=20 'peter'[:-1]@petertodd.org --liOOAslEiF7prFVr Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBAgAGBQJRfe8rAAoJECSBQD2l8JH7AGEH/jaa/pYpqEZXEmBidaMKqOzT 60337h5d06SMq6U1aftiLMEJPBg6CV5nXFWBWLXQWH7Mfmx7UOg/cOJKh2krTgc8 nepPutTyVRQnntTlqx+OxzhxE67JqVtc7YKAy0g0PUsq9wqL/b0TTKUCSNijLx95 E05arzOaNR+mZEhg0dvDLnlygaY8XqZx0UN1SplL98Vf2KyHKFQ8mvBRO7APqvOG JQ8vIC4suifFs/Wz75uO8NRW6nzd7dT34klvCimYbWSaHIYjXkarV37TZilr5H77 erKbJURfyqmDF7RwoBBiB5gDINygo2pWsP9Vtrrt52JX4yzgq6VzOLIw2/pit2E= =h00i -----END PGP SIGNATURE----- --liOOAslEiF7prFVr--