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-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WXwSR-0002xH-MP for bitcoin-development@lists.sourceforge.net; Wed, 09 Apr 2014 17:38:43 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of petertodd.org designates 62.13.148.99 as permitted sender) client-ip=62.13.148.99; envelope-from=pete@petertodd.org; helo=outmail148099.authsmtp.net; Received: from outmail148099.authsmtp.net ([62.13.148.99]) by sog-mx-4.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1WXwSQ-0004pe-GJ for bitcoin-development@lists.sourceforge.net; Wed, 09 Apr 2014 17:38:43 +0000 Received: from mail-c235.authsmtp.com (mail-c235.authsmtp.com [62.13.128.235]) by punt18.authsmtp.com (8.14.2/8.14.2/) with ESMTP id s39HcZIx029814; Wed, 9 Apr 2014 18:38:35 +0100 (BST) Received: from [25.121.248.92] ([24.114.49.14]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id s39HcWLJ045535 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 9 Apr 2014 18:38:33 +0100 (BST) User-Agent: K-9 Mail for Android In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 From: Peter Todd Date: Wed, 09 Apr 2014 13:38:28 -0400 To: Alex Mizrahi , Bitcoin Dev Message-ID: X-Server-Quench: c64aded2-c00d-11e3-b802-002590a15da7 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aAdMdgsUGUUGAgsB AmIbWlxeU1V7Wmc7 aQ5PbARZfE5HQQRu T0xPR01TWkZrCGRS YWJkUh13cgZDNnly ZkYsDXZfDRAvIURg EU5UQXAHZDJjdTIX UEJFdwNWdQpKLx5A PgF4GhFYa3VsFCMk FAgyOXU9MCtSLCNN RwwLMWdaa0cXFTk9 QRxHHDNqF0QORCop KAEgJhYZG0oceks1 KxMaYWx5LBYWDgBC BCkA X-Authentic-SMTP: 61633532353630.1023:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 24.114.49.14/465 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: 1WXwSQ-0004pe-GJ Subject: Re: [Bitcoin-development] Bitcoind-in-background mode for SPV wallets 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: Wed, 09 Apr 2014 17:38:43 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 9 April 2014 13:33:19 GMT-04:00, Alex Mizrahi wrote: >> >> 1) It's more private. Bloom filters gives away quite accurate >statistical >> information about what coins you own to whom ever you happen to be >> connected too. An attacker can easily use this to deanonymize you >even if >> you don't reuse addresses; Tor does not help much against this >attack. >> > >There is also an option to download everything, but do only a very >basic >surface validation (without keeping track of UTXOs). >You do not need a full node for that. Yup, that's part of the idea behind partial UTXO set mode. You could have a model where your node starts with no data at all, and hence SPV security. You tell your node what the oldest key birthday is that your interested in and it downloads the full block chain starting at that date, giving you your txs w/ SPV security and full node privacy. What partial UTXO would add on top of that is then your node would gradually scan backwards until block zero, at which point it has a complete UTXO set and is a full node. -----BEGIN PGP SIGNATURE----- Version: APG v1.1.1 iQFQBAEBCgA6BQJTRYWUMxxQZXRlciBUb2RkIChsb3cgc2VjdXJpdHkga2V5KSA8 cGV0ZUBwZXRlcnRvZGQub3JnPgAKCRAZnIM7qOfwhaHEB/0Q0P544nJrtapnzogG QpREeBlwR5I8fZ+BCbNcAk6afk9KLOFIsLBW0bFvFXfSO1TiyCLMezLkvhuDC5lM vrCBKdmaXhwMaTGppgFNl9adu8yBRQ6I2BN21hQejyfmCvHTsoN6u1oeYccL+K+D lTK2dMCmXLixcQIJjS9sGA8/TXjmiY65RzIdXl0UHeV4JUtRREMUB1HeXJWCxMEt 4KQXb5tk21vZ+BTf9kRirnCtFT+Wudyo73M2XGKbR3mzHc2jY+RjEb71J0hUmh8s h4kVhuMMkEFjNUwU017kEYQpmXMMRwCyUydc7BoV6hZXnUx4ROTpc6pDv2IZkeLB bGiE =adiR -----END PGP SIGNATURE-----