A computer system that includes a central server that is programmed to store an initialize business rule associated with a vendor and a DNS associated with the vendor. The central server is programmed to receive a first user query for a product or service of the vendor. The central server is programmed to dynamically form a universal code sequence forming a DNA field, having at least fields for a user identity, a transaction scope and a product definition. The central server is programmed to receive, from the vendor a first vendor response based upon execution by the vendor of the initialize business rule and to receive a second user query. The central server is programmed to dynamically add the universal code sequence to form a request DNA. The central server is programmed to dynamically form an offer DNA and determine if the offer DNA matches the request DNA.