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From: Luke Dashjr <luke@dashjr.org>
To: bitcoin-dev@lists.linuxfoundation.org,
	Sergio Demian Lerner <sergio.d.lerner@gmail.com>
Date: Wed, 11 May 2016 14:28:24 +0000
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On Wednesday, May 11, 2016 12:20:55 PM Sergio Demian Lerner via bitcoin-dev 
wrote:
> On Tue, May 10, 2016 at 6:43 PM, Sergio Demian Lerner <
> sergio.d.lerner@gmail.com> wrote:
> > You can find it here:
> > https://bitslog.wordpress.com/2014/03/18/the-re-design-of-the-bitcoin-blo
> > ck-header/
> > 
> > Basically, the idea is to put in the first 64 bytes a 4 byte hash of the
> > second 64-byte chunk. That design also allows increased nonce space in
> > the first 64 bytes.
> 
> My mistake here. I didn't recalled correctly my own idea. The idea is to
> include in the second 64-byte chunk a 4-byte hash of the first chunk, not
> the opposite.

What if we XOR bytes 64..76 with the first 12 bytes of the SHA2 midstate? 
Would that work?

Luke