S4FE is a freely accessible, blockchain based search engine dedicated to the protection of property. It provides a global network for the registration of items and the recovery of lost or stolen property.
FNKOS is a fog computing-based blockchain operating system designed to make the best use of the edge computing resources such as idle hardware network and storage resources. The fog blockchain was built on the basis of a PoC (Proof of Contribution) consensus algorithm: nodes get FNKOS incentives according to their contribution in the fog blockchain based on network flow, storage volume, computational capacity.