Andrew Poelstra [ARCHIVE] on Nostr: 📅 Original date posted:2023-02-01 🗒️ Summary of this message: A technical ...

📅 Original date posted:2023-02-01
🗒️ Summary of this message: A technical discussion on the efficiency of using OP_FALSE IF ... ENDIF versus OpPush <data> OpDrop for pushing large amounts of data into the Bitcoin blockchain.
📝 Original message:On Tue, Jan 31, 2023 at 09:07:16PM -0500, Peter Todd via bitcoin-dev wrote:
>
>
> On January 31, 2023 7:46:32 PM EST, Christopher Allen via bitcoin-dev <bitcoin-dev at lists.linuxfoundation.org> wrote:
> >All other things being equal, which is better if you need to place a
> >64-bytes into the Bitcoin blockchain? A traditional OP_RETURN or a spent
> >taproot transaction such as:
> >
> >OP_FALSE
> >OP_IF
> >OP_PUSH my64bytes
> >OP_ENDIF
>
> What's wrong with OpPush <data> OpDrop?
>

This is a technical nit, but the reason is that <data> is limited to 520
bytes (and I believe, 80 bytes by standardness in Taproot), so if you
are pushing a ton of data and need multiple pushes, it's more efficient
to use FALSE IF ... ENDIF since you avoid the repeated DROPs.

--
Andrew Poelstra
Director of Research, Blockstream
Email: apoelstra at wpsoftware.net
Web: https://www.wpsoftware.net/andrew

The sun is always shining in space
-Justin Lewis-Webster

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