Date: Thu, 18 Jan 2018 11:36:44 -0500
From: Peter Todd <pete@petertodd.org>
To: Jefferson Carpenter <jeffersoncarpenter2@gmail.com>,
	Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Message-ID: <20180118163644.GA11829@fedora-23-dvm>
References: <58fa85b8-cba3-ee34-8c96-41c6c7bfbf9c@gmail.com>
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Subject: Re: [bitcoin-dev] Upgrading PoW algorithm
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On Wed, Jan 17, 2018 at 04:31:52PM -0600, Jefferson Carpenter via bitcoin-d=
ev wrote:
> Bitcoin's difficulty will be maxed out within about 400 years, by Moore's
> law.  (After that - supposing the software does not crash when difficulty

There's no reason to think Moore's law will last for 400 years; if it did
mining Bitcoin blocks would require astronomical energy levels. I haven't
actually done the math, but having to convert a mass-energy equivalance of a
planet or two per block is probably an accurate lower-bound even with quant=
um
computers. Once we're at that point, the problem is the speed of light: we'=
ll
run out of energy in our 10 minute light radius, and thus need to get it fr=
om
farther away, at which point the 10 minute block interval forces a hard fork
anyway because mining no longer is in consensus.

tl;dr: This is a topic for sci-fi writers, not bitcoin-dev

Also: https://xkcd.com/605/

--=20
https://petertodd.org 'peter'[:-1]@petertodd.org

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