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From: Peter Todd <pete@petertodd.org>
Date: Fri, 23 Jan 2015 09:49:59 -0800
To: slush <slush@centrum.cz>, Alan Reiner <etotheipi@gmail.com>
Message-ID: <087FD04D-4DBA-4E93-AA84-FD77AA9FE136@petertodd.org>
Cc: Bitcoin Development <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] SIGHASH_WITHINPUTVALUE
Precedence: list

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On 23 January 2015 08:35:23 GMT-08:00, slush <slush@centrum.cz> wrote:
>Oh, now I got the 'soft-fork' alternative. If that means that *senders*
>to
>Trezor need to be nice guys and use some special outputs, then it's,
>obviously, no-go solution.

That's what P2SH is for; the senders will just be sending to a P2SH address.

>I understand political aspect around hard-fork. Anyway, are there any
>other
>pending projects waiting for hard-fork?

Hard-forks aren't hard for directly political issues, they're politically hard because they're risky by requiring everyone yo upgrade at once. In the case of signature validation, that touches a *lot* of third party code that people rely on to avoid being defrauded.

FWIW I've actually got a half-finished writeup for how to use OP_CODESEPARATOR and a CHECKSIG2 soft-fork to have signatures sign fees and so forth.
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