>> It seems like people already know that they want to use a blockchain even before they understand what the problem is. I kind of agree with this notion, but

>> It seems like people already know that they want to use a blockchain even before they understand what the problem is. I kind of agree with this notion, but it is not limited to blockchains or cryptocurrencies. I had discussions about using deep learning on a problem that was very ill suited for machine learning approaches (in the end it was solved by regular expressions and some simple statistics). Other overhyped technologies include: microservices, nosql-databases, rdf/sparql/semantic web and IoT-devices. Some items on this list were overhyped in the past, but have found a reasonable technological ecosystem in fields that are suited to it, like rdf. I think the same will happen with the blockchain.