> You are mixing things up. While it's true that Cryptocurrencies try to solve a different problem than BitTorrent, Git and Email neither of those applications rely on a single centralized server owned by a single company.

I don't thing we disagree here. I am just pointing out that blockchain/Bitcoin/Ethereum is different because it allows to main a shared, verifiable state, something that BitTorrent, Git and Email do not provide. An ability to have this shared state is the main selling point of blockhain based systems.