> Did you not see Storj's canary?

I hadn't seen the old one, just the empty one they have published now. It was a lot more specific than other comments suggested!

> Although, with Storj, the signatures didn't expire, so in the event that the government did setup operations, they could have just continued using one of the older signatures. (And only would have been unable to create new ones on request)

that's my guess. they could either compel the company to turn over the keys or they could get them themselves from wherever they are stored/used.