From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 694AC25A for ; Sat, 18 Jul 2015 15:09:46 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from outmail148107.authsmtp.com (outmail148107.authsmtp.com [62.13.148.107]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id B0FBF112 for ; Sat, 18 Jul 2015 15:09:45 +0000 (UTC) Received: from mail-c237.authsmtp.com (mail-c237.authsmtp.com [62.13.128.237]) by punt18.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t6IF9iEo059477; Sat, 18 Jul 2015 16:09:44 +0100 (BST) Received: from savin.petertodd.org (75-119-251-161.dsl.teksavvy.com [75.119.251.161]) (authenticated bits=128) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t6IF9esa004203 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Sat, 18 Jul 2015 16:09:43 +0100 (BST) Date: Sat, 18 Jul 2015 11:09:40 -0400 From: Peter Todd To: Mike Hearn Message-ID: <20150718150939.GA5065@savin.petertodd.org> References: <24662b038abc45da7f3990e12a649b8a@airmail.cc> <55A7BFF7.2050608@xylon.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="SLDf9lqlvOQaIe6s" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-Server-Quench: 051fd786-2d5f-11e5-9f75-002590a135d3 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aQdMdwoUEkAYAgsB AmMbWlJeUFR7XWA7 bA9PbARUfEhLXhtr VklWR1pVCwQmRRp4 cBdLEUhydwFEeH0+ bE5rWD5bWUUsIUF1 RFNWQWhQeGZhPWUC WRZfch5UcAFPdx8U a1N6AHBDAzANdhEy HhM4ODE3eDlSNhEd eQACK1McQE0CGCJ0 QxcZBjg0VUcUDyk0 MhYiJxsHBEsXPkQ0 PhM8X1kfNRETEAhT EyMFHDVQIUIITDYq CgVBNQAA X-Authentic-SMTP: 61633532353630.1024:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 75.119.251.161/587 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,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 Cc: bitcoin-dev@lists.linuxfoundation.org Subject: Re: [bitcoin-dev] Significant losses by double-spending unconfirmed transactions 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: Sat, 18 Jul 2015 15:09:46 -0000 --SLDf9lqlvOQaIe6s Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jul 18, 2015 at 01:43:14PM +0200, Mike Hearn via bitcoin-dev wrote: > > > > What are these pre- and post-Hearn-relay drop rules you are speaking > > about? >=20 >=20 > He's talking about patches I didn't even write (Gavin and Tom did), but > have included in Bitcoin XT: No, he's talking about the min-relay-fee drop that you wrote: https://github.com/bitcoin/bitcoin/pull/3305 Based on what I saw in my logs, the double-spends were mainly being done by exploiting the fact that much of the hashing power has reverted your 10x relay fee drop as it makes wasting bandwidth and mempool RAM easy. (so much so that crashing nodes with OOM's is fairly cheap) --=20 'peter'[:-1]@petertodd.org 00000000000000000a56b9b96af356cc8411cea940bb6c25b9cd934f99f9e174 --SLDf9lqlvOQaIe6s Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- iQGrBAEBCACVBQJVqmwvXhSAAAAAABUAQGJsb2NraGFzaEBiaXRjb2luLm9yZzAw MDAwMDAwMDAwMDAwMDAwYTU2YjliOTZhZjM1NmNjODQxMWNlYTk0MGJiNmMyNWI5 Y2Q5MzRmOTlmOWUxNzQvFIAAAAAAFQARcGthLWFkZHJlc3NAZ251cGcub3JncGV0 ZUBwZXRlcnRvZC5vcmcACgkQJIFAPaXwkftz/Af/VheWGITiJCH2eM5P1muTIKaC WLgRBAmJyU6ULJj1EVzdtZqjMv55kEHM73DsxOPtPuieorhNwTJzpIEOePADy6TV XnRdau0+ogM5IpMvGoPslnqeNZGDRz1CcNMdCwyYl7r2URfU6w5ATMpCPLzlhThU Ch3wOAt1QVihO7L8bIzz102m0LnANWusvpTWfAxl3l0GmAue9WhXG+7BylqXNMcH 1TGcesmBV4otnBoLv0jM4PLVwpRMOu3Kazf/+69bPUnDJd2rTGthtPQ2b95f3gwF wkXIiyIyRCDbRFReV0/ZpyuVrUFlhSEff0vVtXImqjCM72kb+NbXMVjpwHp82g== =dVni -----END PGP SIGNATURE----- --SLDf9lqlvOQaIe6s--