The Great Use Cases Index Records of: Spending, Trading, Security Tokens Currency Mortgage Certifications: Business Licenses Keys to: Homes and Hotel Rooms Private Equities Birth/Death certificates, Passports Online Identities Public Equities Voter IDs Reservations (restaurants, hotels, Bonds Health / Safety Inspections queues etc) Derivatives (futures, forwards, swaps, Vouchers Building permits options and more complex variations) Commodities Government/non-profit Music/Movies/Book Licenses/Softwares accounting/transparency (DRM)