"Blockchain" continues to generate plenty of headlines in both the specialist and mainstream press. If these — and vendor publicity materials — were anything to go by, we're on the cusp of mainstream adoption. But that's far from the case. And judging by the questions Forrester receives about the topic, there's still a lot of confusion around what the technology can actually do and how mature it really is. This report answers CIOs' key questions around what blockchain is, how it's being adopted, and what some of the key initiatives are.