Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 9851212EF for ; Wed, 16 Sep 2015 04:38:22 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-oi0-f46.google.com (mail-oi0-f46.google.com [209.85.218.46]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 3D1F7AF for ; Wed, 16 Sep 2015 04:38:22 +0000 (UTC) Received: by oibi136 with SMTP id i136so111598000oib.3 for ; Tue, 15 Sep 2015 21:38:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to:content-type; bh=5r2LKW+ePhGlC9mD5r4ZhHKI58Vhh3+rlCKKmQ20oRE=; b=TE+bCsiZwIoyZX3ezyZAvr+OcWIbHDtXSKQk9r/sq4T2+nx5QUI+3UujHIavE8NHr9 sJDfu8uXMJu5RHe5GRL0cySNriPvHVe5iXPc8gIACZSXgQ2C2QBXUL+zXxT8zYbXhFQ0 87IxDm6i6CcOv/pCuznqZA8IfC68jgLZEuvC/1uRdw+DiJ1SI4A0V6EXzEEAJA7w1duw XgwXB4yC3YavmoT/rDV+6hFDXBAdzjYCDWk3US77aToltdfF6DqFTUuYbKTctGyIUdFt EDmQ5I80CPAL8xspITVVsKpe6eigQm8l9+rldbcvt6Ik9GCD591TX6Co8ylc2BDGJfHv bgVA== X-Received: by 10.182.58.105 with SMTP id p9mr21372345obq.11.1442378301543; Tue, 15 Sep 2015 21:38:21 -0700 (PDT) MIME-Version: 1.0 Received: by 10.202.197.82 with HTTP; Tue, 15 Sep 2015 21:37:42 -0700 (PDT) From: Sergio Demian Lerner Date: Wed, 16 Sep 2015 01:37:42 -0300 Message-ID: To: bitcoin-dev Content-Type: multipart/alternative; boundary=e89a8f83a6cd4ba541051fd5de87 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: [bitcoin-dev] Proof of unique blockchain storage revised X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Development Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Sep 2015 04:38:22 -0000 --e89a8f83a6cd4ba541051fd5de87 Content-Type: text/plain; charset=UTF-8 One possible way to incentivize the existence of more Bitcoin network nodes is by paying peers when they provide data in the blokcchain. One of the problems is that it is not easy to tell if the peer is really providing a useful service by storing the blockchain or it is just relying the request to some other peers as a proxy. In this post I review the use of asymmetric-time functions to be able to prove unique (IP-tied) blockchain storage and propose improvements to make it fully practical. Full post here: https://bitslog.wordpress.com/2015/09/16/proof-of-unique-blockchain-storage-revised/ Best regards, Sergio. --e89a8f83a6cd4ba541051fd5de87 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
One possible way to incentivize the existence of= more Bitcoin network nodes is by paying peers when they provide data in th= e blokcchain. One of the problems is that it is not easy to tell if the pee= r is really providing a useful service by storing the blockchain or it is j= ust relying the request to some other peers as a proxy.

In thi= s post I review the use of asymmetric-time functions to be able to prove un= ique (IP-tied) blockchain storage and propose improvements to make it fully= practical.

Full post here:
https://bitslog= .wordpress.com/2015/09/16/proof-of-unique-blockchain-storage-revised/
Best regards, Sergio.
--e89a8f83a6cd4ba541051fd5de87--