Patent attributes
Aspects of the subject disclosure may include, for example, a device, that includes a processing system including a processor, and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations including: creating an initial block in a blockchain, wherein the initial block includes first information describing an advertisement spot generated by a viewer device; adding second information to the initial block that identifies a purchaser of the advertisement spot; calculating a cryptographic hash for the initial block; and sending a copy of the cryptographic hash to a network element of a communications network, wherein the network element records the copy of the cryptographic hash in a hash ledger. Other embodiments are disclosed.
