From: Rusty Russell <rusty@rustcorp•com.au>
To: Luke Dashjr <luke@dashjr•org>,
Bitcoin Protocol Discussion
<bitcoin-dev@lists•linuxfoundation.org>,
Bitcoin Protocol Discussion
<bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] BIP draft: OP_CHECKBLOCKATHEIGHT
Date: Sat, 01 Oct 2016 13:31:04 +0930 [thread overview]
Message-ID: <87oa34d8fz.fsf@rustcorp.com.au> (raw)
In-Reply-To: <201609230957.03138.luke@dashjr.org>
Luke Dashjr via bitcoin-dev <bitcoin-dev@lists•linuxfoundation.org> writes:
> This BIP describes a new opcode (OP_CHECKBLOCKATHEIGHT) for the Bitcoin
> scripting system to address reissuing bitcoin transactions when the coins they
> spend have been conflicted/double-spent.
>
> https://github.com/luke-jr/bips/blob/bip-cbah/bip-cbah.mediawiki
>
> Does this seem like a good idea/approach?
Prefer a three-arg version (gbits-to-compare, blocknum, hash):
- If <bits> is 0 or > 256, invalid.
- If the hash length is not (<bits> + 7) / 8, invalid.
- If the hash unused bits are not 0, invalid.
- Otherwise <bits> of hash is compared to lower <bits> of blockhash.
This version also lets you play gambling games on-chain!
Or maybe I've just put another nail in CBAH's coffin?
Cheers,
Rusty.
next prev parent reply other threads:[~2016-10-01 4:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-23 9:57 Luke Dashjr
2016-09-23 13:43 ` Russell O'Connor
[not found] ` <CAAS2fgQGC695mkyze+mVTZZoQN1mh+1y32u-D6Yv1R7nXWPDcg@mail.gmail.com>
2016-09-23 18:57 ` Gregory Maxwell
2016-09-23 20:02 ` Peter Todd
2016-09-23 22:20 ` Luke Dashjr
2016-09-23 23:43 ` Gregory Maxwell
2016-09-23 14:37 ` Tom
2016-09-23 22:34 ` Luke Dashjr
2016-09-24 0:08 ` Dave Scotese
2016-09-24 9:37 ` Tom
2016-09-23 16:18 ` Peter Todd
2016-10-01 4:01 ` Rusty Russell [this message]
2016-10-01 5:02 ` Luke Dashjr
2016-10-05 2:15 ` Nathan Cook
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87oa34d8fz.fsf@rustcorp.com.au \
--to=rusty@rustcorp$(echo .)com.au \
--cc=bitcoin-dev@lists$(echo .)linuxfoundation.org \
--cc=luke@dashjr$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox