I've been trying to wrap my head around how Blockchain is supposed to revolutionize the world apart from Bitcoin. Is there a video or tutorial out there that will help me understand Blockchain on a level where I can speak about it in an interview or understand how my business can utilize Blockchain? I feel like it's something I need to know at a core level yet after watching probably 20 different Youtube videos I still don't get how business is supposed to profit from Blockchain. I hear companies like IBM and Oracle speaking to how great Blockchain is yet I need some help understanding it. If there is a thread explaining this already that would be great to read.