Blockchain is the safest way to save data, now, only few people who understand about Blockchain. But actually blockchain technology can be used in wide scope. Honestly I have a plan to bulid an app which can be used to ease everyone to find place, job, goods and an assistant for their job and I need to use blockchain technology to save data and keep it organized. But not in the near future, I hope I can release the app before many big company do the samething. I will use btc and other cryptocurrencies for all transactions on that app. Have you heard about docademic? They already use blockchain technology.