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Date: Wed, 9 Dec 2015 02:02:58 +0100
Message-ID: <CABm2gDrBbCE16rWgRf73=4ZQmkjHKWKccu9wH-V1q4jenjV3_Q@mail.gmail.com>
From: =?UTF-8?B?Sm9yZ2UgVGltw7Nu?= <jtimon@jtimon.cc>
To: Gregory Maxwell <greg@xiph.org>
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Cc: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Capacity increases for the Bitcoin system.
Precedence: list

On Wed, Dec 9, 2015 at 1:58 AM, Jorge Tim=C3=B3n <jtimon@jtimon.cc> wrote:
> struct hashRootStruct
> {
> uint256 hashMerkleRoot;
> uint256 hashWitnessesRoot;
> int32_t nHeight;
> }

Or better, for forward compatibility (we may want to include more
things apart from nHeight and hashWitnessesRoot in the future):

struct hashRootStruct
{
 uint256 hashMerkleRoot;
 uint256 hashWitnessesRoot;
 uint256 hashextendedHeader;
}

For example, we may want to chose to add an extra nonce there.