Thank you for your interest in the article :)
Before creating the dapp, I looked for similar projects and I found two other smart contracts dealing with marriage certificates but they didn’t go far enough for me.
Unfortunately, I have the feeling that the vast majority of smart contracts at the moment are used for gaming and speculation and I haven’t seen anything really disruptive. I’ve been interested in blogging platforms like Cent lately and microfinance possibilities with smart contracts, but I didn’t find anything groundbreaking yet.