From: "Russell O'Connor" <roconnor@blockstream•io>
To: ZmnSCPxj <ZmnSCPxj@protonmail•com>,
Bitcoin Protocol Discussion
<bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] BIP: OP_BRIBVERIFY - the op code needed for Blind Merge Mined drivechains
Date: Wed, 12 Jul 2017 09:39:17 -0400 [thread overview]
Message-ID: <CAMZUoK==7OATOJ=46CYJWkq=WAXnJ8-JjvL25E1ijhnRbqj_Jg@mail.gmail.com> (raw)
In-Reply-To: <hvQJ5M9JSIbEjJuabefPJi_DBqDTTXYnJ1xEg7_rBozOBrI8WDzL6zwn9Zt7au5QHc3P3DPNYDBrsQCTkSB6lOFWPJ8UuY_W4GyIzQ-Qvfs=@protonmail.com>
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On Wed, Jul 12, 2017 at 4:50 AM, ZmnSCPxj via bitcoin-dev <
bitcoin-dev@lists•linuxfoundation.org> wrote:
In any case, let me propose actual improvements to the OP_BRIBEVERIFY
> proposal:
>
> 1. Remove the necessity of coinbase commitments. The miner commits to
> the sidechain_id and h* in the transaction that pays the OP_BRIBEVERIFY
> anyway. That way the h* commitment occurs only once in the block, in the
> transaction that does the OP_BRIBEVERIFY. In addition, there is no need to
> impose particular ordering on the coinbase outputs, which would be
> problematic as pointed out by others, for example if the miner is
> interested only in merge mining for sidechain id #35 and nobody else.
>
> 2. When verifying a block, keep a set of sidechain ID's. When processing
> a transaction in that block with OP_BRIBEVERIFY, check if the sidechain ID
> is in that set. If not in that set, add it to that set and continue script
> processing. If already in the set, fail the script processing. This
> ensures that at most one OP_BRIBEVERIFY exists for each sidechain_id in a
> mainchain block.
>
At this point can we eliminate the need to use the scripting system at all
and just use a special, currently non-standard, OP_RETURN output to hold
the sidechain_id and h* instead? We can soft fork in a rule that at most
one such output can appear in a block per sidechain_id.
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next prev parent reply other threads:[~2017-07-12 13:39 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-28 0:37 Chris Stewart
2017-06-28 4:07 ` Gregory Maxwell
2017-06-28 16:35 ` Paul Sztorc
2017-06-28 5:20 ` Luke Dashjr
2017-06-28 5:28 ` Adam Back
2017-06-28 16:43 ` Paul Sztorc
2017-06-28 8:26 ` ZmnSCPxj
2017-06-28 22:20 ` Paul Sztorc
2017-06-28 22:49 ` Russell O'Connor
2017-06-28 23:47 ` Chris Stewart
2017-06-29 1:09 ` Russell O'Connor
2017-06-30 4:00 ` ZmnSCPxj
2017-06-30 14:12 ` Chris Stewart
2017-06-30 16:51 ` CryptAxe
2017-07-02 21:32 ` Paul Sztorc
2017-07-04 7:21 ` ZmnSCPxj
2017-07-04 15:06 ` Chris Stewart
2017-07-12 8:50 ` ZmnSCPxj
2017-07-12 13:39 ` Russell O'Connor [this message]
[not found] ` <CAGL6+mHErvPbvKxrQkJ=DdTuzH-4Fsxh8JnnzVY16m2x6zeJFQ@mail.gmail.com>
2017-07-12 18:02 ` Chris Stewart
2017-07-13 0:00 ` Paul Sztorc
2017-07-13 20:22 ` Chris Stewart
2017-07-13 20:45 ` Paul Sztorc
2017-07-12 23:31 ` Paul Sztorc
[not found] ` <CAF5CFkg+mJQ75ps7f3Xa=j2eBDoNwFEdL-vFrFV5y_FqF3qGRA@mail.gmail.com>
2017-07-12 23:58 ` CryptAxe
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