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From: Rusty Russell <rusty@rustcorp.com.au>
To: Btc Drak <btcdrak@gmail.com>, Alex Morcos <morcos@gmail.com>
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Subject: Re: [bitcoin-dev] CHECKSEQUENCEVERIFY - We need more usecases to
	motivate the change
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Btc Drak <btcdrak@gmail.com> writes:
> Alex,
>
> I am sorry for not communicating more clearly. Mark and I discussed your
> concerns from the last meeting and he made the change. The BIP text still
> needs to be updated, but the discussed change was added to the PR, albeit
> squashed making it more non-obvious. BIP68 now explicitly uses 16 bits with
> a bitmask. Please see the use of SEQUENCE_LOCKTIME_MASK
> and SEQUENCE_LOCKTIME_GRANULARITY in the PR
> https://github.com/bitcoin/bitcoin/pull/6312.

I like it from a technical perspective.

>From a practical perspective: yuck.  There's currently no way to play
with bitcoind's perception of time, so that's a very long sleep to
blackbox test (which is what my lightning test script does).

So consider this YA feature request :)

Cheers,
Rusty.