On Thu, Aug 27, 2015 at 12:38:42PM +0930, Rusty Russell via bitcoin-dev wrote: > So I'd like an IsStandard() rule to say it nLockTime be 0 if an > nSequence != 0xFFFFFFFF. Would that screw anyone currently? That sentence doesn't quite parse ("say it nLockTime"), so please forgive me if I'm misunderstanding you. Are you saying that you want IsStandard() to require a transaction have a locktime of 0 (no confirmation delay) if any of its inputs use a non-final sequence? If so, wouldn't that make locktime useless for delaying confirmation in IsStandard() transactions because the consensus rules require at least one input be non-final in order for locktime to have any effect? Thanks, -Dave