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From: Peter Todd <pete@petertodd.org>
To: vjudeu@gazeta.pl,
	Bitcoin Protocol Discussion
	<bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] OP_RETURN inside TapScript
Date: Wed, 16 Mar 2022 14:21:30 -0400	[thread overview]
Message-ID: <YjIqqv+0YTbl/fAL@petertodd.org> (raw)
In-Reply-To: <157744394-3dec42994f1798ce65b00e23b21ea656@pmq2v.m5r2.onet>

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On Thu, Feb 24, 2022 at 10:02:08AM +0100, vjudeu via bitcoin-dev wrote:
> Since Taproot was activated, we no longer need separate OP_RETURN outputs to be pushed on-chain. If we want to attach any data to a transaction, we can create "OP_RETURN <anything>" as a branch in the TapScript. In this way, we can store that data off-chain and we can always prove that they are connected with some taproot address, that was pushed on-chain. Also, we can store more than 80 bytes for "free", because no such taproot branch will be ever pushed on-chain and used as an input. That means we can use "OP_RETURN <1.5 GB of data>", create some address having that taproot branch, and later prove to anyone that such "1.5 GB of data" is connected with our taproot address.

There are two use-cases for OP_RETURN: committing to data, and publishing data.
Your proposal can only do the former, not the latter, and there are use-cases
for both.

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

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  parent reply	other threads:[~2022-03-16 18:21 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-24  9:02 [bitcoin-dev] OP_RETURN inside TapScript vjudeu
2022-02-24 10:08 ` Ruben Somsen
2022-02-24 13:27   ` vjudeu
2022-02-24 14:01     ` Ruben Somsen
2022-02-24 21:40 ` Zac Greenwood
2022-02-25  0:04   ` ZmnSCPxj
2022-02-25  1:12     ` Zac Greenwood
2022-02-25  3:19       ` ZmnSCPxj
2022-02-25  7:15         ` Zac Greenwood
2022-02-25 12:48           ` ZmnSCPxj
2022-02-25 13:53             ` Zac Greenwood
2022-03-16 18:21 ` Peter Todd [this message]
2022-03-19 18:32   ` vjudeu
2022-03-21 11:00     ` Kostas Karasavvas

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