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| author | Rusty Russell <rusty@rustcorp.com.au> | 2016-10-01 13:31:04 +0930 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2016-10-01 04:10:53 +0000 |
| commit | a8035321fddb47641b4cb1ec4d445a433d52b470 (patch) | |
| tree | ddc843f76c3fa9d1ce6faaa021a10c7b61a2bfec | |
| parent | c0c8164b9d832d64b337dcaddbc208b4d267dd58 (diff) | |
| download | pi-bitcoindev-a8035321fddb47641b4cb1ec4d445a433d52b470.tar.gz pi-bitcoindev-a8035321fddb47641b4cb1ec4d445a433d52b470.zip | |
Re: [bitcoin-dev] BIP draft: OP_CHECKBLOCKATHEIGHT
| -rw-r--r-- | cb/271ee20b611af855007e10543cd987286a1353 | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/cb/271ee20b611af855007e10543cd987286a1353 b/cb/271ee20b611af855007e10543cd987286a1353 new file mode 100644 index 000000000..15663c90d --- /dev/null +++ b/cb/271ee20b611af855007e10543cd987286a1353 @@ -0,0 +1,66 @@ +Return-Path: <rusty@ozlabs.org> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id DB6E3725 + for <bitcoin-dev@lists.linuxfoundation.org>; + Sat, 1 Oct 2016 04:10:53 +0000 (UTC) +X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 +Received: from ozlabs.org (ozlabs.org [103.22.144.67]) + by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 5BFEC100 + for <bitcoin-dev@lists.linuxfoundation.org>; + Sat, 1 Oct 2016 04:10:53 +0000 (UTC) +Received: by ozlabs.org (Postfix, from userid 1011) + id 3smFGd5JW7z9sdn; Sat, 1 Oct 2016 14:10:49 +1000 (AEST) +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> +In-Reply-To: <201609230957.03138.luke@dashjr.org> +References: <201609230957.03138.luke@dashjr.org> +User-Agent: Notmuch/0.21 (http://notmuchmail.org) Emacs/24.5.1 + (x86_64-pc-linux-gnu) +Date: Sat, 01 Oct 2016 13:31:04 +0930 +Message-ID: <87oa34d8fz.fsf@rustcorp.com.au> +MIME-Version: 1.0 +Content-Type: text/plain +X-Spam-Status: No, score=-7.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, + RP_MATCHES_RCVD autolearn=ham version=3.3.1 +X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on + smtp1.linux-foundation.org +Subject: Re: [bitcoin-dev] BIP draft: OP_CHECKBLOCKATHEIGHT +X-BeenThere: bitcoin-dev@lists.linuxfoundation.org +X-Mailman-Version: 2.1.12 +Precedence: list +List-Id: Bitcoin Protocol Discussion <bitcoin-dev.lists.linuxfoundation.org> +List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe> +List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/> +List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org> +List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help> +List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe> +X-List-Received-Date: Sat, 01 Oct 2016 04:10:54 -0000 + +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. + |