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From: Andy Parkins <andyparkins@gmail.com>
To: Jorge =?iso-8859-1?q?Tim=F3n?= <timon.elviejo@gmail.com>
Date: Wed, 23 Nov 2011 11:30:58 +0000
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Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] Addressing rapid changes in mining power
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On 2011 November 23 Wednesday, Jorge Tim=F3n wrote:
> 2011/11/23, Andy Parkins <andyparkins@gmail.com>:
> > Let's abandon the idea of a target difficulty. Instead, every node just
> >=20
> > generates the most difficulty block it can. Simultaneously, every node
> > is listening for "the most difficult block generated before time T";
> > with T being
> > picked to be the block generation rate (10 minutes).
>=20
> A miner could try to obtain more difficulty out of time and cheat its
> reported datetime (T).
Just as with the current system.
The defence is that on receipt of a block, its timestamp is checked against=
=20
the node's own clock and averaged network clock. Blocks out of that band a=
re=20
rejected.
Andy
=2D-=20
Dr Andy Parkins
andyparkins@gmail.com
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