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Date: Wed, 13 May 2015 13:31:06 -0700
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From: Pieter Wuille <pieter.wuille@gmail.com>
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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] [BIP] Normalized Transaction IDs
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On Wed, May 13, 2015 at 1:27 PM, Tier Nolan <tier.nolan@gmail.com> wrote:

> After more thought, I think I came up with a clearer description of the
> recursive version.
>
> The simple definition is that the hash for the new signature opcode should
> simply assume that the normalized txid system was used since the
> beginning.  All txids in the entire blockchain should be replaced with the
> "correct" values.
>
> This requires a full re-index of the blockchain.  You can't work out what
> the TXID-N of a transaction is without knowning the TXID-N of its parents,
> in order to do the replacement.
>
> The non-recursive version can only handle refunds one level deep.
>

This was what I was suggesting all along, sorry if I wasn't clear.

-- 
Pieter

--001a1137a5049140130515fc7db5
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">On Wed, May 13, 2015 at 1:27 PM, Tier Nolan <span dir=3D"l=
tr">&lt;<a href=3D"mailto:tier.nolan@gmail.com" target=3D"_blank">tier.nola=
n@gmail.com</a>&gt;</span> wrote:<br><div class=3D"gmail_extra"><div class=
=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8=
ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div>After=
 more thought, I think I came up with a clearer description of the recursiv=
e version.<br><br>The simple definition is that the hash for the new signat=
ure opcode should simply assume that the normalized txid system was used si=
nce the beginning.=A0 All txids in the entire blockchain should be replaced=
 with the &quot;correct&quot; values.<br><br>This requires a full re-index =
of the blockchain.=A0 You can&#39;t work out=20
what the TXID-N of a transaction is without knowning the TXID-N of its=20
parents, in order to do the replacement.<br><br>The non-recursive version c=
an only handle refunds one level deep.<br></div></div></blockquote><div><br=
></div><div>This was what I was suggesting all along, sorry if I wasn&#39;t=
 clear.<br><br>-- <br></div><div>Pieter<br>=A0<br></div></div></div></div>

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