Abstract: Secure service provider identification to content provider partner. Secure service provider identification is provided to a content provider partner by embedding a service provider digital signature on the user transaction request. The present invention provides an ISP/BW's secure identification between a user and a content provider, in each transaction between them. The ISP/BW's secure identification may be provided in each transaction between them. A content provider may have a partnership with an ISP, through which a user may purchase its contents. The content provider and/or ISP may provide an incentive, such an offered discount on the item and/or download cost, to stimulate business. The profit from the transaction may be shared between the ISP and the content provider. The content provider is then able to identify the user's transaction coming from a certain ISP for logging and verifying. The identifier to the content provider is employed using digital signature technology.