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| author | Trevin Hofmann <trevinhofmann@gmail.com> | 2017-03-26 15:37:28 -0500 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2017-03-26 20:37:29 +0000 |
| commit | 27e2b2f5117d150a0d25fe05ad9dc5f64ca44199 (patch) | |
| tree | a5c4a048e496939eab47a9adabf652b948e09eb3 | |
| parent | 52e7f3756f8937f248ac4d9e0f0e7a4d33dab76f (diff) | |
| download | pi-bitcoindev-27e2b2f5117d150a0d25fe05ad9dc5f64ca44199.tar.gz pi-bitcoindev-27e2b2f5117d150a0d25fe05ad9dc5f64ca44199.zip | |
Re: [bitcoin-dev] Defending against empty or near empty blocks from malicious miner takeover?
| -rw-r--r-- | 9e/77b53f04ad7672849230c1988f3afa8eb1f1ce | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/9e/77b53f04ad7672849230c1988f3afa8eb1f1ce b/9e/77b53f04ad7672849230c1988f3afa8eb1f1ce new file mode 100644 index 000000000..3d3441ac7 --- /dev/null +++ b/9e/77b53f04ad7672849230c1988f3afa8eb1f1ce @@ -0,0 +1,172 @@ +Return-Path: <trevinhofmann@gmail.com> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id 8D84840C + for <bitcoin-dev@lists.linuxfoundation.org>; + Sun, 26 Mar 2017 20:37:29 +0000 (UTC) +X-Greylist: whitelisted by SQLgrey-1.7.6 +Received: from mail-pg0-f50.google.com (mail-pg0-f50.google.com [74.125.83.50]) + by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 1D83625D + for <bitcoin-dev@lists.linuxfoundation.org>; + Sun, 26 Mar 2017 20:37:29 +0000 (UTC) +Received: by mail-pg0-f50.google.com with SMTP id 21so19940199pgg.1 + for <bitcoin-dev@lists.linuxfoundation.org>; + Sun, 26 Mar 2017 13:37:29 -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=u5HpRVQ1EOqvu/y8pM4YMRp54Jpn9u9kJImueHRUSqY=; + b=Olkhx0hEpxHilr3eQCfq5diDFRtzvaWm7tfKPH28vx5Dxpvkecfh+cLnPSUjlL6UnO + /zhr3mDAAZbw5hRsdMBYgSkF+nU2vkaIg3Ho4awpGsAnUKtC2Qw9Ew5hIwzN1rGnutLt + FnFEkJIXN3xQyOBWBzoIJNo0ba9GtHFzV3X7yL5GeTlEwRy0y6RbLEJMPOhCovH77iVX + jpNTdM1TbamQos0GA+RdG0JU5muxpOBPEQJai5vHYAxFWK97RzMUVO2XpQIBpQmZjySa + Qu4zLvhgbA3ljgBOaws33ZqYf3QpRn9rdUOMf22iXC7mhzUjTkr5KYExDwohWr+lKoay + 22Mg== +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=u5HpRVQ1EOqvu/y8pM4YMRp54Jpn9u9kJImueHRUSqY=; + b=NYe7ymbyQW+yB6pJ7UgvOYNrcpuhQtPK0bTMdsYBGpmkpQhlhl8PjV/EwGcQgEMHWP + HhPuG7s4hsGyVy0Ke5+MGgf+7dSQ7V9mB+baEuzJj1G6bRqiABxY4j/86pTkCusqbUX7 + GmuYTV6A4Jnsiy92c/w4QgqLNpEAHshEdyY9RhynX6a8sT9awQOz2LKk2IsSXriEv0f0 + KONM660kkA2AMBCEZM8M5XGSMIiaoC0TArOMzX4JKNOxA7TqAhrcvCsnJqOzfG+uJ9qK + Z7tt5SwlSjzOoEn8P4yJ33BOHmPMc8Cb/aG4TJyu33P/XN4EXcT7Hl9UgFi5aLERJtrf + iH7g== +X-Gm-Message-State: AFeK/H11L4zQQ444pAdKtCM9aFqSy7RMHX/3Mln3Dp9ZhwuHyJAybjcsNp/X+47PmaI8zjrMll2rDbfWz/+jVQ== +X-Received: by 10.84.225.146 with SMTP id u18mr340113plj.86.1490560648649; + Sun, 26 Mar 2017 13:37:28 -0700 (PDT) +MIME-Version: 1.0 +Received: by 10.100.143.143 with HTTP; Sun, 26 Mar 2017 13:37:28 -0700 (PDT) +In-Reply-To: <CABaSBayb-FAt0XOX9u+T3-Z2gJQAV-Y7xZS_k6YG74VhPqejQA@mail.gmail.com> +References: <5b9ba6c4-6d8f-9c0b-2420-2be6c30f87b5@cannon-ciota.info> + <35ba77db-f95a-4517-c960-8ad42a633ba0@gmail.com> + <f4849cef-3c40-31a4-e323-6a731bb52bc2@cannon-ciota.info> + <9C2A6867-470D-4336-8439-17F4E0CA4B17@gmx.com> + <CAPWm=eV2aLJKMM_5T-jaXCm1umRFxy+vfirBqCGAvUKHtOphQg@mail.gmail.com> + <9EB5050D-E54E-4E8B-84C6-95CC1FAC4081@gmx.com> + <CABaSBayb-FAt0XOX9u+T3-Z2gJQAV-Y7xZS_k6YG74VhPqejQA@mail.gmail.com> +From: Trevin Hofmann <trevinhofmann@gmail.com> +Date: Sun, 26 Mar 2017 15:37:28 -0500 +Message-ID: <CALd2G5dCLHDxV6Daq6q=AMuW8ytPGMKjAdXHxZzsUccJbKJKSg@mail.gmail.com> +To: Bryan Bishop <kanzure@gmail.com>, + Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org> +Content-Type: multipart/alternative; boundary=f403045ec540faa0ad054ba8315a +X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, + DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, HTML_MESSAGE, + RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 +X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on + smtp1.linux-foundation.org +X-Mailman-Approved-At: Sun, 26 Mar 2017 20:48:21 +0000 +Subject: Re: [bitcoin-dev] Defending against empty or near empty blocks from + malicious miner takeover? +X-BeenThere: bitcoin-dev@lists.linuxfoundation.org +X-Mailman-Version: 2.1.12 +Precedence: list +List-Id: Bitcoin Protocol Discussion <bitcoin-dev.lists.linuxfoundation.org> +List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe> +List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/> +List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org> +List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help> +List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe> +X-List-Received-Date: Sun, 26 Mar 2017 20:37:29 -0000 + +--f403045ec540faa0ad054ba8315a +Content-Type: text/plain; charset=UTF-8 + +>> With a tightening of the rule set, a hash power minority that has not +upgraded will not produce a minority branch; instead they will simply have +any invalid blocks they produce orphaned, serving as a wake-up call t>o +upgrade. + +> False. With bip9-based soft-fork-based activation of segwit, miner blocks +will not be orphaned unless they are intentionally segwit-invalid (which +they currently are not). If you have told miners otherwise, let me know. + +He stated that "any invalid blocks they produce" will be orphaned. This is +not false. If non-upgraded miners do not produce blocks that are invalid +per the new rules, their blocks will not be orphaned. This is consistent +with Peter's comment. + +-Trevin + +On Sun, Mar 26, 2017 at 3:22 PM, Bryan Bishop via bitcoin-dev < +bitcoin-dev@lists.linuxfoundation.org> wrote: + +> On Sun, Mar 26, 2017 at 2:05 PM, Peter R via bitcoin-dev < +> bitcoin-dev@lists.linuxfoundation.org> wrote: +> +>> With a tightening of the rule set, a hash power minority that has not +>> upgraded will not produce a minority branch; instead they will simply have +>> any invalid blocks they produce orphaned, serving as a wake-up call to +>> upgrade. +>> +> +> False. With bip9-based soft-fork-based activation of segwit, miner blocks +> will not be orphaned unless they are intentionally segwit-invalid (which +> they currently are not). If you have told miners otherwise, let me know. +> +> - Bryan +> http://heybryan.org/ +> 1 512 203 0507 <(512)%20203-0507> +> +> _______________________________________________ +> bitcoin-dev mailing list +> bitcoin-dev@lists.linuxfoundation.org +> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev +> +> + +--f403045ec540faa0ad054ba8315a +Content-Type: text/html; charset=UTF-8 +Content-Transfer-Encoding: quoted-printable + +<div dir=3D"ltr"><span class=3D"gmail-im" style=3D"font-size:12.8px"><div><= +span style=3D"font-size:12.8px">>> With a tightening of the rule set,= + a hash power minority that has not upgraded will not produce a minority br= +anch; instead they will simply have any invalid blocks they produce orphane= +d, serving as a wake-up call t>o upgrade.</span><br></div><div><br></div= +></span><div style=3D"font-size:12.8px">> False. With bip9-based soft-fo= +rk-based activation of segwit, miner blocks will not be orphaned unless the= +y are intentionally segwit-invalid (which they currently are not). If you h= +ave told miners otherwise, let me know.<br><br>He stated that "any inv= +alid blocks they produce" will be orphaned. This is not false. If non-= +upgraded miners do not produce blocks that are invalid per the new rules, t= +heir blocks will not be orphaned. This is consistent with Peter's comme= +nt.</div><div style=3D"font-size:12.8px"><br></div><div style=3D"font-size:= +12.8px">-Trevin</div></div><div class=3D"gmail_extra"><br><div class=3D"gma= +il_quote">On Sun, Mar 26, 2017 at 3:22 PM, Bryan Bishop via bitcoin-dev <sp= +an dir=3D"ltr"><<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org"= + target=3D"_blank">bitcoin-dev@lists.linuxfoundation.org</a>></span> wro= +te:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-= +left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_= +extra"><div class=3D"gmail_quote"><span class=3D"">On Sun, Mar 26, 2017 at = +2:05 PM, Peter R via bitcoin-dev <span dir=3D"ltr"><<a href=3D"mailto:bi= +tcoin-dev@lists.linuxfoundation.org" target=3D"_blank">bitcoin-dev@lists.<w= +br>linuxfoundation.org</a>></span> wrote:<br><blockquote class=3D"gmail_= +quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1= +ex"><div style=3D"word-wrap:break-word"><div><div><div>With a tightening of= + the rule set, a hash power minority that has not upgraded will not produce= + a minority branch; instead they will simply have any invalid blocks they p= +roduce orphaned, serving as a wake-up call to upgrade.</div></div></div></d= +iv></blockquote><div><br></div></span><div>False. With bip9-based soft-fork= +-based activation of segwit, miner blocks will not be orphaned unless they = +are intentionally segwit-invalid (which they currently are not). If you hav= +e told miners otherwise, let me know.</div><div><br></div></div><div class= +=3D"m_8979519589113278200gmail_signature" data-smartmail=3D"gmail_signature= +">- Bryan<br><a href=3D"http://heybryan.org/" target=3D"_blank">http://heyb= +ryan.org/</a><br><a href=3D"tel:(512)%20203-0507" value=3D"+15122030507" ta= +rget=3D"_blank">1 512 203 0507</a></div> +</div></div> +<br>______________________________<wbr>_________________<br> +bitcoin-dev mailing list<br> +<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org">bitcoin-dev@lists.= +<wbr>linuxfoundation.org</a><br> +<a href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev" = +rel=3D"noreferrer" target=3D"_blank">https://lists.linuxfoundation.<wbr>org= +/mailman/listinfo/bitcoin-<wbr>dev</a><br> +<br></blockquote></div><br></div> + +--f403045ec540faa0ad054ba8315a-- + |