The thing though that would make this worthwhile would be if it were decentralized, because you want universal verification and independence of some third-party breaking if its like a contract. While they could act as a law office or official records office that keeps the contract, deed, or certificate on-file, I’d not keep the only copy of something important with a startup that could go out of business and has no requirement to keep my data or secure its future, so I’d hope there’s something for that.