From: "Jorge Timón" <jtimon@jtimon•cc>
To: Peter Todd <pete@petertodd•org>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] Relative CHECKLOCKTIMEVERIFY (was CLTV proposal)
Date: Tue, 28 Apr 2015 09:44:14 +0200 [thread overview]
Message-ID: <CABm2gDqTz9hDK0auje7OodKS935XFjcR818WsTb6FKDz=qO_SA@mail.gmail.com> (raw)
In-Reply-To: <20150427193526.GH5223@muck>
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Even if it's new and has not received any feedback, I think my solution to
op_maturity is quite clean.
But anyway, yes, the non-relative cltv is much simpler in design and
doesn't have to wait for the other. On the other hand, I would upgrade it
to absolute cltv like you suggested and take the current height as a
parameter to verifyScript instead of using the nLockTime as reference.
If we know we're going to use it for rcltv/op_maturity, better put add soon
rather than later, specially if that will give us a more powerful cltv.
If we don't want that height param, we can leave it out of for op_maturity
too, but that's the wingle decision about rcltv/maturity that affects cltv
so better solve that first.
On Apr 27, 2015 9:35 PM, "Peter Todd" <pete@petertodd•org> wrote:
> On Sun, Apr 26, 2015 at 02:20:04PM +0200, Jorge Timón wrote:
> > On Sun, Apr 26, 2015 at 1:35 PM, Jorge Timón <jtimon@jtimon•cc> wrote:
> > > And a new softfork rule could enforce that all new CTxIn set nHeight
> > > to the correct height in which its corresponding prevout got into the
> > > chain.
> > > That would remove the need for the TxOutputGetter param in
> > > bitcoinconsensus_verify_script, but unfortunately it is not reorg safe
> > > (apart from other ugly implementation details).
> >
> > Wait, wait, this can be made reorg-safe and more backards compatible.
> > The new validation rule at the tx validation level (currently in
> > main::CheckInputs()) would be
>
> <snip>
>
> So, seems to me that RCLTV opens up a whole rats nest of design
> decisions and compromises that CLTV doesn't. Yet CLTV itself is a big
> step forward, it's been implemented on Viacoin for the past few months
> with no issues found, and has an extremely simple and easy to audit
> implementation.
>
> I think I'm going to argue we implement it as-is in a soft-fork. Pieter
> Wuille's been working on a new way to handle soft-fork upgrades in the
> block nVersion field, so this would be a good opportunity to add
> something simple and well tested, and also make sure the new nVersion
> soft-fork mechanism works. Equally, doing both at the same time ensures
> we don't burn yet another version bit.
>
> --
> 'peter'[:-1]@petertodd.org
> 00000000000000000e7980aab9c096c46e7f34c43a661c5cb2ea71525ebb8af7
>
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next prev parent reply other threads:[~2015-04-28 7:44 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-01 13:08 [Bitcoin-development] [BIP draft] CHECKLOCKTIMEVERIFY - Prevent a txout from being spent until an expiration time Peter Todd
2014-10-01 15:01 ` Gavin Andresen
2014-10-02 1:06 ` Peter Todd
2014-10-01 15:29 ` Sergio Lerner
2014-10-01 17:06 ` Peter Todd
2014-10-01 18:23 ` Luke Dashjr
2014-10-01 20:58 ` Gavin Andresen
2014-10-01 21:04 ` Alan Reiner
2014-10-01 21:34 ` Gavin Andresen
2014-10-02 0:12 ` Peter Todd
2014-10-02 0:05 ` Peter Todd
2014-10-02 0:55 ` Luke Dashjr
2014-10-02 1:09 ` Peter Todd
2014-10-02 15:05 ` Flavien Charlon
2014-10-03 14:28 ` Matt Whitlock
2014-10-03 14:30 ` Matt Whitlock
2014-10-03 16:17 ` Gregory Maxwell
2014-10-03 17:50 ` Luke Dashjr
2014-10-03 20:58 ` Mike Hearn
2014-10-03 23:12 ` Jeff Garzik
2014-10-04 0:38 ` Peter Todd
2014-10-04 12:58 ` Mike Hearn
2014-10-07 15:50 ` Gavin Andresen
2014-10-07 16:08 ` Mike Hearn
2014-10-08 10:26 ` Wladimir
2014-10-09 3:13 ` Alan Reiner
2014-10-09 6:14 ` Adam Back
2014-10-09 6:28 ` Gregory Maxwell
2014-10-09 6:33 ` Peter Todd
2014-10-09 6:40 ` Gregory Maxwell
2014-10-08 4:07 ` Tom Harding
2014-10-08 10:15 ` Mike Hearn
2015-03-16 22:22 ` [Bitcoin-development] Relative CHECKLOCKTIMEVERIFY (was CLTV proposal) Matt Corallo
2015-03-19 17:39 ` Zooko Wilcox-OHearn
2015-04-21 7:59 ` Peter Todd
2015-04-26 11:35 ` Jorge Timón
2015-04-26 12:20 ` Jorge Timón
2015-04-27 19:35 ` Peter Todd
2015-04-28 7:44 ` Jorge Timón [this message]
2015-05-04 2:15 ` Matt Corallo
2015-05-04 11:24 ` Jorge Timón
2015-05-05 0:41 ` Btc Drak
2015-05-05 19:19 ` Jorge Timón
2015-05-05 20:38 ` Tier Nolan
2015-05-06 7:37 ` Jorge Timón
2015-05-06 22:09 ` Tier Nolan
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