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+From: Ben Carman <benthecarman@live.com>

+To: "bitcoin-dev@lists.linuxfoundation.org"

+ <bitcoin-dev@lists.linuxfoundation.org>

+Thread-Topic: BIP proposal: Anti-fee-sniping protection with nSequence in

+ taproot transactions to improve privacy for off-chain protocols

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+X-Mailman-Approved-At: Mon, 28 Jun 2021 10:57:35 +0000

+Subject: Re: [bitcoin-dev] BIP proposal: Anti-fee-sniping protection with

+ nSequence in taproot transactions to improve privacy for off-chain

+ protocols

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+

+--_000_SJ0PR10MB4719291762199CECE5798AF1A1039SJ0PR10MB4719namp_

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+

+> If nSequence is set it should apply only to the first input of the

+transaction, if it has multiple inputs.

+

+This could have complications with DLCs and dual funded lightning. In both =

+protocols the ordering of the inputs is not know until both parties have re=

+vealed all of their inputs, and during the reveal the nSequence is given. =

+If we want DLCs and dual funded lightning to be compatible it would be bett=

+er to have it define it as =93at least one of the inputs of the transaction=

+=94 instead of =93it should apply only to the first input of the transactio=

+n=94

+

+benthecarman

+

+

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+<p class=3D"MsoNormal">&gt; If nSequence is set it should apply only to the=

+ first input of the<br>

+transaction, if it has multiple inputs.<o:p></o:p></p>

+<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>

+<p class=3D"MsoNormal">This could have complications with DLCs and dual fun=

+ded lightning. In both protocols the ordering of the inputs is not know unt=

+il both parties have revealed all of their inputs, and during the reveal th=

+e nSequence is given.&nbsp; If we want

+ DLCs and dual funded lightning to be compatible it would be better to have=

+ it define it as =93at least one of the inputs of the transaction=94 instea=

+d of =93it should apply only to the first input of the transaction=94<o:p><=

+/o:p></p>

+<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>

+<p class=3D"MsoNormal">benthecarman<br>

+<br>

+</p>

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