S4FE is the world’s first blockchain technology based global database for the registration and identification of stolen or lost items. The database is accessible to everyone and enables users to register and search property on the blockchain. Such property could be electronic devices, jewelry, collections, valuables of any kind, documents, sports and hobby equipment, vehicles and machines or nearly any conceivable item representing a value to its owner.S4FE is a freely accessible, blockchain-basedtechnology, global network for registration, search, verification, and identification of (lost or stolen) property. Property means every imaginable kind of „objects“, such as electronic devices, jewelry, valuables, collections, documents, contracts, hobby equipment, vehicles, and machines, or just any imaginable object that is of value to its owner.