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From: Rusty Russell <rusty@rustcorp.com.au>
To: Mark Friedenbach <mark@friedenbach.org>,
	Eric Lombrozo <elombrozo@gmail.com>
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Date: Fri, 18 Sep 2015 10:51:19 +0930
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Cc: Btc Drak via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] [BIP-draft] CHECKSEQUENCEVERIFY - An opcode for
	relative locktime
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Mark Friedenbach via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org>
writes:
> Eric, that would be, I think, my sequencenumbers2 branch in which nSequence
> is an explicit relative lock-time field (unless the most significant bit is
> set). That has absolutely clear semantics. You should comment on #6312
> where this is being discussed.

Indeed.  Simplicity wins.  We have half the number space left for the
future, too.  If people are paranoid, reserve the top *two* bits.

Thanks,
Rusty.