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To: =?ISO-8859-1?Q?Jorge_Tim=F3n?= <jtimon@jtimon.cc>,
	Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>,
	=?ISO-8859-1?Q?Jorge_Tim=F3n_via_bitcoin-dev?=
	<bitcoin-dev@lists.linuxfoundation.org>, 
	Christopher Allen <ChristopherA@lifewithalacrity.com>
From: Peter Todd <pete@petertodd.org>
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Subject: Re: [bitcoin-dev] Claiming an OP_RETURN Prefix
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On August 15, 2018 8:33:43 PM UTC, "Jorge Tim=C3=B3n via bitcoin-dev" <bit=
coin-dev@lists=2Elinuxfoundation=2Eorg> wrote:
>op_return outputs can be pruned because they are not spendable=2E
>putting a hash on in the witness script data won't make things better
>(it would actually make them worse) and it definitely doesn't help
>"block size bloat"=2E
>I think I'm missing some context, but if you're using op_return purely
>for timestamping I would recommend using pay 2 contract  instead=2E

If you're *actually* just doing timestamping you're better off using OpenT=
imestamps=2E But many times people think they're just doing timestamping in=
 reality mere timestamps are insufficient for the task=2E

Notably, this is something the Satoshi Bitcoin white paper gets wrong, inc=
orrectly describing Bitcoin as a timestamping system: timestamping is insuf=
ficient to prevent double-spends=2E

--=20
https://petertodd=2Eorg 'peter'[:-1]@petertodd=2Eorg