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 15F026C for ; Fri, 7 Apr 2017 07:45:01 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-qk0-f181.google.com (mail-qk0-f181.google.com [209.85.220.181]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id BA545D0 for ; Fri, 7 Apr 2017 07:45:00 +0000 (UTC) Received: by mail-qk0-f181.google.com with SMTP id f133so39314939qke.2 for ; Fri, 07 Apr 2017 00:45:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=oRCscjGMtdW93lE81UYMW8/C6F6bLb+lvfha3SWBmSA=; b=ufHTIQXm5zQDllXvFY20xMmJ2c53zVSpNArPvFeaVbQBTBQu+vwMySLf3Z9XXCyk+b RdsVr94qEJwj09mrdxyyYWDwbLpcT6RV8Fm8Pv0qyYmeKAB2mRHMrJDN6KmRV0pLrSqV e73BtmrEtPiwU4mOdYW4uOcKcCILstCeH9lXk0QPiqhVVXHzFdE/xuYWxIk7Xpr3U9bk zX2XM3foawcMdIKmSftjLEyr9dMSvtXiMe9PrcnG5zpm7lDh5yaNbeMD6fVYYrmfjWzb joqkYoI/oi8IGnxZxe6cUbj0i4CFkaVU+i4abkBcA83Vq1RQGoPpHNBf28Y7k4Yd0TQR K69g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=oRCscjGMtdW93lE81UYMW8/C6F6bLb+lvfha3SWBmSA=; b=IigV3PXrRh9yMldvyCvVQqsq7Rh1LvIDUC9egpuCrDF90q0LcbBcJMWot+KT7lUFPP ooB1V9JSlhzIAQGIQ0XuaMzD/jL/AmWGJbREjqjtWnAhyMfVrIiS5Il7u+XbEHT8awwo 1t0+lo5L2qnnFX8Fnyis4PiDuDYPdR/B4J+oKc6doCkUrY7I/eRBRh1X5DQeMnmG75cN Z00gIYJ1Uzx/PFWIil8evi8hhkPopm7iHyJ6A97zv34Arwoa1o5ZWycnAPI21VBRVdPw ZDGH2SHikxnqPGlzsDncWa8TX5oLHHw8oGe4HR63hLvdzlYT6fib/8nNVP1yoQlGOFb4 4z6Q== X-Gm-Message-State: AFeK/H2AYStg4EYx0RJBvJU5tb9ycTT9TFGBToIpu3Ch3F4VD58x6a44s0fC2pqvcS2INn/HFuJYFNwnPCy7GQ== X-Received: by 10.55.72.4 with SMTP id v4mr39940281qka.21.1491551099806; Fri, 07 Apr 2017 00:44:59 -0700 (PDT) MIME-Version: 1.0 Received: by 10.55.55.79 with HTTP; Fri, 7 Apr 2017 00:44:59 -0700 (PDT) In-Reply-To: References: From: Alex Mizrahi Date: Fri, 7 Apr 2017 10:44:59 +0300 Message-ID: To: Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary=001a114a7d6a77ee3e054c8ecdf8 X-Spam-Status: No, score=-1.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_SPAM autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] BIP proposal: Inhibiting a covert attack on the Bitcoin POW function X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Apr 2017 07:45:01 -0000 --001a114a7d6a77ee3e054c8ecdf8 Content-Type: text/plain; charset=UTF-8 > Can you please not forget to supply us more details on the claims made > regarding the reverse engineering of the Asic chip? > > It is absolutely crucial that we get these independently verified ASAP. > Bitmain confirmed that their chips support ASICBOOST and it can be used for mining: https://blog.bitmain.com/en/regarding-recent-allegations-smear-campaigns/ They claim that they don't use it on mainnet, but that claim cannot be verified. it is possible to do covert ASICBOOST in a 100% covert manner. (It can be done without "transaction reordering" so it's not worth analyzing blocks etc.) --001a114a7d6a77ee3e054c8ecdf8 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
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Can you please not forget to supply us more details on the c= laims made regarding the reverse engineering of the Asic chip?

It is= absolutely crucial that we get these independently verified ASAP.

Bitmain confirmed tha= t their chips support ASICBOOST and it can be used for mining:

They claim that the= y don't use it on mainnet, but that claim cannot be verified. it is pos= sible to do covert ASICBOOST in a 100% covert manner. (It can be done witho= ut "transaction reordering" so it's not worth analyzing block= s etc.)
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