MIME-Version: 1.0
Sender: dscotese@gmail.com
Date: Sat, 10 Oct 2015 14:41:24 -0700
Message-ID: <CAGLBAhcW2Av7X92LjXk+SjK+Dj4Hw4VapGSoiKQggE6wi4r0kg@mail.gmail.com>
From: Dave Scotese <dscotese@litmocracy.com>
To: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Content-Type: multipart/alternative; boundary=f46d0442727230ead60521c6f53f
Subject: [bitcoin-dev] Masked bits and isStandard
Precedence: list

--f46d0442727230ead60521c6f53f
Content-Type: text/plain; charset=UTF-8

Thanks again.  The description of bits 16..29 as "can take any value"
suggests to me an improvement for isStandard: if any bits "can take any
value" without affecting the script then they must be off for the script to
pass isStandard.

If I understand it correctly, this requirement will serve as a backup to
future uses of those bits if such uses are deployed as soft forks.

I'm sorry if my suggestion reflects a poor understanding of isStandard, but
I offer it as evidence on whether the mechanism is as well understood as it
should be, since we use soft forks.  If I have misunderstood, feel free to
educate me with a reply.

Thanks!
Notplato



On Oct 10, 2015, at 8:22 AM, G1lius Caesar via bitcoin-dev <
bitcoin-dev@lists.linuxfoundation.org> wrote:


bits 16..29 are masked off and can take any value.



-- 
I like to provide some work at no charge to prove my value. Do you need a
techie?
I own Litmocracy <http://www.litmocracy.com> and Meme Racing
<http://www.memeracing.net> (in alpha).
I'm the webmaster for The Voluntaryist <http://www.voluntaryist.com> which
now accepts Bitcoin.
I also code for The Dollar Vigilante <http://dollarvigilante.com/>.
"He ought to find it more profitable to play by the rules" - Satoshi
Nakamoto

--f46d0442727230ead60521c6f53f
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<br><span style=3D"font-family:UICTFontTextStyleBody;font-size:17px">Thanks=
 again.=C2=A0 The description of bits 16..29 as &quot;can take any value&qu=
ot; suggests to me an improvement for isStandard: if any bits &quot;can tak=
e any value&quot; without affecting the script then they must be off for th=
e script to pass isStandard.</span><br style=3D"font-family:UICTFontTextSty=
leBody;font-size:17px"><span style=3D"font-family:UICTFontTextStyleBody;fon=
t-size:17px"></span><br style=3D"font-family:UICTFontTextStyleBody;font-siz=
e:17px"><span style=3D"font-family:UICTFontTextStyleBody;font-size:17px">If=
 I understand it correctly, this requirement will serve as a backup to futu=
re uses of those bits if such uses are deployed as soft forks.=C2=A0</span>=
<br style=3D"font-family:UICTFontTextStyleBody;font-size:17px"><span style=
=3D"font-family:UICTFontTextStyleBody;font-size:17px"></span><br style=3D"f=
ont-family:UICTFontTextStyleBody;font-size:17px"><span style=3D"font-family=
:UICTFontTextStyleBody;font-size:17px">I&#39;m sorry if my suggestion refle=
cts a poor understanding of isStandard, but I offer it as evidence on wheth=
er the mechanism is as well understood as it should be, since we use soft f=
orks.=C2=A0 If I have misunderstood, feel free to educate me with a reply.<=
/span><br style=3D"font-family:UICTFontTextStyleBody;font-size:17px"><span =
style=3D"font-family:UICTFontTextStyleBody;font-size:17px"></span><br style=
=3D"font-family:UICTFontTextStyleBody;font-size:17px"><span style=3D"font-f=
amily:UICTFontTextStyleBody;font-size:17px">Thanks!</span><br style=3D"font=
-family:UICTFontTextStyleBody;font-size:17px"><span style=3D"font-family:UI=
CTFontTextStyleBody;font-size:17px">Notplato</span><br style=3D"font-family=
:UICTFontTextStyleBody;font-size:17px"><span style=3D"font-family:UICTFontT=
extStyleBody;font-size:17px"></span><br style=3D"font-family:UICTFontTextSt=
yleBody;font-size:17px"><span style=3D"font-family:UICTFontTextStyleBody;fo=
nt-size:17px"></span><br style=3D"font-family:UICTFontTextStyleBody;font-si=
ze:17px"><span style=3D"font-family:UICTFontTextStyleBody;font-size:17px"><=
/span><br style=3D"font-family:UICTFontTextStyleBody;font-size:17px"><block=
quote type=3D"cite" style=3D"font-family:UICTFontTextStyleBody;font-size:17=
px">On Oct 10, 2015, at 8:22 AM, G1lius Caesar via bitcoin-dev &lt;<a href=
=3D"mailto:bitcoin-dev@lists.linuxfoundation.org">bitcoin-dev@lists.linuxfo=
undation.org</a>&gt; wrote:<br></blockquote><blockquote type=3D"cite" style=
=3D"font-family:UICTFontTextStyleBody;font-size:17px"><br></blockquote><blo=
ckquote type=3D"cite" style=3D"font-family:UICTFontTextStyleBody;font-size:=
17px">bits 16..29 are masked off and can take any value.</blockquote><br><b=
r>-- <br><div dir=3D"ltr">I like to provide some work at no charge to prove=
 my value. Do you need a techie?=C2=A0 <br>I own <a href=3D"http://www.litm=
ocracy.com" target=3D"_blank">Litmocracy</a> and <a href=3D"http://www.meme=
racing.net" target=3D"_blank">Meme Racing</a> (in alpha). <br>I&#39;m the w=
ebmaster for <a href=3D"http://www.voluntaryist.com" target=3D"_blank">The =
Voluntaryist</a> which now accepts Bitcoin.<br>I also code for <a href=3D"h=
ttp://dollarvigilante.com/" target=3D"_blank">The Dollar Vigilante</a>.<br>=
&quot;He ought to find it more profitable to play by the rules&quot; - Sato=
shi Nakamoto</div><br>

--f46d0442727230ead60521c6f53f--