Patent ID: 9465922
Filing Date: 2016-10-11
CPC Classification: G06F

Claim Text:
1. A method for secure distribution of data in an interchange network, the interchange network comprising an authorization service and a watermarking module, the method comprising: granting, by the authorization service, a contractor access to at least a portion of data records; interleaving, using the watermarking module executed in a computer, artificial records into the portion of the data records in a random fashion and at a frequency that provides a likelihood of greater than a non-zero threshold that a set of the data records includes at least one artificial record, wherein the artificial records cannot be distinguished from the data records by the contractor and are valid for processing in a same way as the data records, wherein the contractor is a first contractor that is part of a first level of hierarchical levels of contractors, and wherein the artificial records are unique to the first level; granting, by the authorization service, a second contractor access to at least a second portion of the data records, the second contractor part of a second level of the hierarchical levels of contractors; and interleaving, using the watermarking module executed in the computer, second artificial records into the second portion of the data records in a random fashion and at a frequency that provides a likelihood of greater than the non-zero threshold that a set of the data records includes at least one second artificial record, the second artificial records unique to the second level and including a portion different from a portion of the artificial records unique to the first level.