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From: Btc Drak <btcdrak@gmail.com>
Date: Tue, 6 Oct 2015 01:28:57 +0100
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Cc: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] CHECKSEQUENCEVERIFY - We need more usecases to
 motivate the change
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Regarding the keeping nSequence for future expansion I believe this has
been covered in the specification section of BIP68[1]: For transaction
version >= 2, if the MSB of nSequence is unset, the field is interpreted as
relative locktime, otherwise no special consensus meaning is attached (and
thus free for repurposing in the future). Effectively if the MSB is set,
the remaining 31 bits (out of 32) are free.

Also please note the BIP112 text has been updated with several more
usecases.

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">Rega=
rding the keeping nSequence for future expansion I believe this has been co=
vered in the specification section of BIP68[1]: For transaction version &gt=
;=3D 2, if the MSB of nSequence is unset, the field is interpreted as relat=
ive locktime, otherwise no special consensus meaning is attached (and thus =
free for repurposing in the future). Effectively if the MSB is set, the rem=
aining 31 bits (out of 32) are free.<br></div><div class=3D"gmail_quote"><b=
r></div><div class=3D"gmail_quote">Also please note the BIP112 text has bee=
n updated with several more usecases.</div></div></div>

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