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authorNewsletter Catcher <newsletters@briancloutier.com>2021-12-18 00:36:07 -0800
committerbitcoindev <bitcoindev@gnusha.org>2021-12-18 08:36:22 +0000
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tree4c6f8a3cfc454042ec29e5ac974423174cc4eaf7
parent9d0fc1c4adbd235e346f156df18894de2ca38a25 (diff)
downloadpi-bitcoindev-e2a67f3100d99ef54d9accc56b92768a8f4d79f5.tar.gz
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Re: [bitcoin-dev] Globally Broadcasting Workshares to Improve Finality Heuristics
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+References: <CAD5xwhjqKC3qUFyOA6Jf=tgQz5KFr97CVVVzemDsX=jLoq2GSg@mail.gmail.com>
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+From: Newsletter Catcher <newsletters@briancloutier.com>
+Date: Sat, 18 Dec 2021 00:36:07 -0800
+Message-ID: <CAGBDHp0WkX4S6Ctgq=7YD75s_PSy==wchEtKPR3YYw0ZVxOtiA@mail.gmail.com>
+To: Jeremy <jlrubin@mit.edu>,
+ Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
+Content-Type: multipart/alternative; boundary="000000000000af236105d3678c24"
+X-Mailman-Approved-At: Sat, 18 Dec 2021 09:56:47 +0000
+Subject: Re: [bitcoin-dev] Globally Broadcasting Workshares to Improve
+ Finality Heuristics
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+
+--000000000000af236105d3678c24
+Content-Type: text/plain; charset="UTF-8"
+
+It's not exactly what you're looking for but this is very similar to the
+premise of Bobtail, which was presented at Scaling Bitcoin a few years ago:
+https://arxiv.org/abs/1709.08750
+
+On Fri, Dec 17, 2021, 10:54 Jeremy via bitcoin-dev <
+bitcoin-dev@lists.linuxfoundation.org> wrote:
+
+> An interesting concept occurred to me today while chatting with Nic Carter.
+>
+> If we set Bitcoin Core up to gossip headers for work shares (e.g.,
+> expected 500 headers per block would have 20kb overhead, assuming we don't
+> need to send the prev hash) we'd be able to have more accurate finality
+> estimates and warnings if we see hashrate abandoning our chain tip. This is
+> observable regardless of if dishonest miners choose not to publish their
+> work on non tip shares, since you can notice the missing work.
+>
+> In the GUI, we could give users an additional warning if they are
+> accepting a payment during a sudden hashrate decrease that they might wait
+> longer.
+>
+> Has this been discussed before?
+>
+> Cheers,
+>
+> Jeremy
+>
+> --
+> @JeremyRubin <https://twitter.com/JeremyRubin>
+> <https://twitter.com/JeremyRubin>
+> _______________________________________________
+> bitcoin-dev mailing list
+> bitcoin-dev@lists.linuxfoundation.org
+> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
+>
+
+--000000000000af236105d3678c24
+Content-Type: text/html; charset="UTF-8"
+Content-Transfer-Encoding: quoted-printable
+
+<div dir=3D"auto"><div>It&#39;s not exactly what you&#39;re looking for but=
+ this is very similar to the premise of Bobtail, which was presented at Sca=
+ling Bitcoin a few years ago:=C2=A0<a href=3D"https://arxiv.org/abs/1709.08=
+750">https://arxiv.org/abs/1709.08750</a><br><br><div class=3D"gmail_quote"=
+><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Dec 17, 2021, 10:54 Jeremy v=
+ia bitcoin-dev &lt;<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org"=
+>bitcoin-dev@lists.linuxfoundation.org</a>&gt; wrote:<br></div><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_default" style=3D"f=
+ont-family:arial,helvetica,sans-serif;font-size:small;color:#000000">An int=
+eresting concept occurred to me today while chatting with Nic Carter.</div>=
+<div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-seri=
+f;font-size:small;color:#000000"><br></div><div class=3D"gmail_default" sty=
+le=3D"font-family:arial,helvetica,sans-serif;font-size:small;color:#000000"=
+>If we set Bitcoin Core up to gossip headers for work shares (e.g., expecte=
+d 500 headers per block would have 20kb overhead, assuming we don&#39;t nee=
+d to send the prev hash) we&#39;d be able to have more accurate finality es=
+timates and warnings if we see hashrate abandoning our chain tip. This is o=
+bservable regardless of if dishonest miners choose not to publish their wor=
+k on non tip shares, since you can notice the missing work.</div><div class=
+=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;font-siz=
+e:small;color:#000000"><br></div><div class=3D"gmail_default" style=3D"font=
+-family:arial,helvetica,sans-serif;font-size:small;color:#000000">In the GU=
+I, we could give users an additional warning if they are accepting=C2=A0a p=
+ayment during a sudden hashrate decrease that they might wait longer.</div>=
+<div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-seri=
+f;font-size:small;color:#000000"><br></div><div class=3D"gmail_default" sty=
+le=3D"font-family:arial,helvetica,sans-serif;font-size:small;color:#000000"=
+>Has this been discussed before?</div><div class=3D"gmail_default" style=3D=
+"font-family:arial,helvetica,sans-serif;font-size:small;color:#000000"><br>=
+</div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,san=
+s-serif;font-size:small;color:#000000">Cheers,</div><div class=3D"gmail_def=
+ault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small;color=
+:#000000"><br></div><div class=3D"gmail_default" style=3D"font-family:arial=
+,helvetica,sans-serif;font-size:small;color:#000000">Jeremy</div><br clear=
+=3D"all"><div><div dir=3D"ltr" data-smartmail=3D"gmail_signature"><div dir=
+=3D"ltr">--<br><a href=3D"https://twitter.com/JeremyRubin" target=3D"_blank=
+" rel=3D"noreferrer">@JeremyRubin</a><a href=3D"https://twitter.com/JeremyR=
+ubin" target=3D"_blank" rel=3D"noreferrer"></a></div></div></div></div>
+_______________________________________________<br>
+bitcoin-dev mailing list<br>
+<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org" target=3D"_blank" =
+rel=3D"noreferrer">bitcoin-dev@lists.linuxfoundation.org</a><br>
+<a href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev" =
+rel=3D"noreferrer noreferrer" target=3D"_blank">https://lists.linuxfoundati=
+on.org/mailman/listinfo/bitcoin-dev</a><br>
+</blockquote></div></div></div>
+
+--000000000000af236105d3678c24--
+