Abstract: A method for detecting of fraudulent calls is provided. The method includes initiating, by an origin node, a call to a target node, and generating, by the origin node, a first call data record (CDR) for the call, wherein the CDR includes at least one call parameter of the call recorded by the origin node upon termination of the call. The method also includes generating, by the origin node, a first secure CDR that contains the first CDR, sending, by the origin node, the first secure CDR to the target node, and generating, by the origin node, a fraud notification based on a second secure CDR received from a first node and the first secure CDR.

Abstract: A method for detecting of fraudulent calls is provided. The method includes initiating, by an origin node, a call to a target node, and generating, by the origin node, a first call data record (CDR) for the call, wherein the CDR includes at least one call parameter of the call recorded by the origin node upon termination of the call. The method also includes generating, by the origin node, a first secure CDR that contains the first CDR, sending, by the origin node, the first secure CDR to the target node, and generating, by the origin node, a fraud notification based on a second secure CDR received from a first node and the first secure CDR.

Abstract: A system and method for validating an authenticity of an item to be purchased in a transaction are provided. The method includes receiving a request for a purchase of at least one item from a purchasing node, and requesting at least one authentication tokens from a token generator. The at least one authentication token is generated based on a ledger, and each of the at least one authentication token corresponds to one of the at least one item to be purchased. The method also includes sending the at least one authentication token to a provider node, performing a verification of the at least one authentication token for authentication of the provider node as a legitimate source, and upon verification of the at least one authentication tokens completing a purchase of the item.