We understand that the traditional retail sector has been eaten up by the exponential growth of e-commerce and m-commerce. At the same time, there are huge opportunities for this sector to revive owing to the growing consciousness of customers and their demand for better user experience. Our objective at Centareum is to provide a peer to peer, proximity-based online to offline to online (O2O2O) platform for the global offline economy which enables users to shares real-time data with the retailers over a secured blockchain network in return for rewards and retailers identifies and provides personalized in-store service thus enhancing the overall customer experience.