Ok according to the
wikipedia definition, the short answer would be no. Because bitcoin is just not complex enough: it was designed by one person and it now works exactly as it was designed for. It is not complexity emerging from multiple and simple interactions.
But let's give this idea a second chance, based on this: no one can stop bitcoin. Satoshi can't. Gavin can't. Justin Bieber can't. Even Chuck Norris can't.
I believe this is not a trivial statement. Bitcoin is an unstoppable machine. It takes its root in human greed: miners want the block reward and hoarders want to become filthy rich in a thousand years. Human greed is not something you can get rid of easily so yeah, imho bitcoin is here to stay.
This count number is the start of something that will stick to humanity for a while: an unstoppable clock used to synchronize economic transactions worldwide.
And as it is something that is beyond the will of any single human being, I believe it is in some way something we can consider "autonomous" and somehow, emergent.