A Pre-nup on a blockchain???

While talking about blockchains and its endless possibilities, we thought of using it to solve our day to day problems. As we are getting married this December, we immediately thought of a putting our pre-nup on the blockchain as a "smart" solution! So the next time when we have to decide which show to watch on Netflix, this is where we can find the tamper proof, single source of truth- that no coder or a photoshop master can manipulate. Believe us, our problems only revolve around food, TV series/ movies and our OCD quirks. We know, that sounds like a first world problem but hey, to each his own.