From: Peter Todd <pete@petertodd•org>
To: Danny Thorpe <danny.thorpe@gmail•com>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] [RFC] Canonical input and output ordering in transactions
Date: Mon, 8 Jun 2015 17:36:11 -0400 [thread overview]
Message-ID: <20150608213611.GB19826@muck> (raw)
In-Reply-To: <CAJN5wHVSK-oW+zVZmEMfyFkd+GUHRhFHEjEmKrdvqas3LzY0zw@mail.gmail.com>
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On Mon, Jun 08, 2015 at 02:25:40PM -0700, Danny Thorpe wrote:
> FWIW, The Open Assets colored coin protocol (CoinPrism) places special
> significance on the zeroth input and the position of the OP_RETURN colored
> coin marker output to distinguish colored coin issuance outputs from
> transfer outputs. Reordering the inputs or the outputs breaks the colored
> coin representation.
>
> Recommending sorting of the inputs and outputs as a best practice is fine
> (and better than random, IMO), but not as part of IsStandard() or consensus
> rules. There are cases where the order of the inputs and outputs is
> significant.
Timestamping is another case where order matters: if you put the digest
in the last vout you can use SHA256 midstate's to reduce the size of the
timestamp proof.
Anyway, there's no reason to rush re: changes to IsStandard()
--
'peter'[:-1]@petertodd.org
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next prev parent reply other threads:[~2015-06-08 21:36 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-06 4:42 Rusty Russell
2015-06-06 4:46 ` Mark Friedenbach
2015-06-06 6:44 ` Rusty Russell
2015-06-06 8:24 ` Wladimir J. van der Laan
2015-06-06 9:45 ` Mark Friedenbach
2015-06-08 21:25 ` Danny Thorpe
2015-06-08 21:36 ` Peter Todd [this message]
2015-06-14 23:04 ` Gregory Maxwell
2015-06-14 23:02 ` Gregory Maxwell
2015-06-15 2:29 ` Rusty Russell
2015-06-15 2:33 ` Gregory Maxwell
2015-06-15 2:47 ` Mark Friedenbach
2015-06-15 21:01 ` Rusty Russell
2015-06-16 7:10 ` Jorge Timón
2015-06-16 8:06 ` Rusty Russell
[not found] ` <CABm2gDpkwHvrsB8Dh-hsO6H9trcweEX9XGB5Jh5KLPsPY5Z1Sw@mail.gmail.com>
2015-06-21 7:27 ` [Bitcoin-development] Fwd: " Jorge Timón
2015-06-15 4:01 ` [Bitcoin-development] " Kristov Atlas
2015-06-24 22:09 ` [bitcoin-dev] " Kristov Atlas
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