From: Flavien Charlon <flavien.charlon@coinprism•com>
To: Peter Todd <pete@petertodd•org>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] [BIP draft] CHECKLOCKTIMEVERIFY - Prevent a txout from being spent until an expiration time
Date: Thu, 2 Oct 2014 16:05:01 +0100 [thread overview]
Message-ID: <CABbpET8_FMCcnh0dELnHsYmF+YP05Gz=nZ3SPkLZuqXYV3JUpQ@mail.gmail.com> (raw)
In-Reply-To: <B3CB4356-7F37-44D3-916B-7A591A1DBBEF@petertodd.org>
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Very good, I like the proposal.
A question I have: can it be used to do the opposite, i.e. build a script
that can only be spent up until block X?
On Thu, Oct 2, 2014 at 2:09 AM, Peter Todd <pete@petertodd•org> wrote:
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>
>
> On 1 October 2014 17:55:36 GMT-07:00, Luke Dashjr <luke@dashjr•org> wrote:
> >On Thursday, October 02, 2014 12:05:15 AM Peter Todd wrote:
> >> On 1 October 2014 11:23:55 GMT-07:00, Luke Dashjr <luke@dashjr•org>
> >wrote:
> >> >Thoughts on some way to have the stack item be incremented by the
> >> >height at
> >> >which the scriptPubKey was in a block?
> >>
> >> Better to create a GET-TXIN-BLOCK-(TIME/HEIGHT)-EQUALVERIFY operator.
> >> scriptPubKey would be:
> >> GET-TXIN-BLOCKHEIGHT-EQUALVERIFY
> >> (fails unless top stack item is equal to the txin block height)
> >> <delta height> ADD
> >> (top stack item is now txin height + delta height)
> >> CHECKLOCKTIMEVERIFY
> >
> >This sounds do-able, although it doesn't address using timestamps.
>
> For timestamps replace "height" with "time" in the above example; the
> minimum block time rule will prevent gaming it.
>
>
> >> You'd want these sacrifices to unlock years into the future to
> >thoroughly
> >> exceed any reasonable business cycle; that's so far into the future
> >that
> >> miners are almost certain to just mine them and collect the fees.
> >
> >For many use cases, short maturity periods are just as appropriate IMO.
>
> Very easy to incentivise mining centralisation with short maturities. I
> personally think just destroying coins is better, but it doesn't sit well
> with people so this is the next best thing.
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next prev parent reply other threads:[~2014-10-02 15:35 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-01 13:08 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 [this message]
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
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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