A method, program and system for processing data is disclosed. The data comprises identifiers of a plurality of entities. The method, program and system comprising the steps of: (a) receiving one or more records, each record having a plurality of identifiers, each record corresponding with at least one entity, (b) utilizing a cryptographic algorithm to process at least two of the plurality of identifiers in the record, (c) sometimes after transmitting the processed record to a separate system or database, comparing the processed record to previously stored data; (d) matching the processed record with previously stored data that is determined to reflect the entity, the previously stored data that is determined to reflect the entity comprising at least a portion of at least two previously received records and/or based upon another identifier; and/or (e) associating the processed record with previously stored data that is determined to reflect a relationship with the entity.