A true canary bulb doesn’t have to be polled: it sends a message when it turns back on after a power outage. But as always the first rule of home automation applies: the model number matters. Some models do this, some don’t. There is a discussion of specific brands in the following thread (The topic title is a clickable link):
[OBSOLETE] SmartBulb Power Outage handler
The hue solution is much more elegant, runs locally, but only works with Hue bulbs connected through a hue bridge.
I may be mistaken, but I thought Osram only had that feature when they were used with their own gateway, not when they were used with smartthings. But maybe I’m wrong.