Do you love the blockchain? Everyone loves the blockchain! Just saying it lends tech cred and tells everyone in the room that you are hip with the technologies. Blockchain. Blockchain. Crypto. Blockchain. According to the "internet" I can use blockchains for such things as registering my band's name to publishing digital photos Here's the dirty secret though, despite all of the jargon around it, it's pretty simple to understand. In just 30 minutes and I'll even show you how to write one with Ruby and prove that you've probably been using a blockchain everyday without knowing.