Abstract: A system and method that accepts material from the Internet, computes and maintains a computationally unique representation of the received material in a database, computes a computationally unique representation of the updated database state as a whole, publishes material and database representations in various forms for the global Internet audience to witness, and returns a time stamped attestation to the submitter of material as proof of the material being witnessed on the Internet along with unique database state and revenue generating advertisements. Published representations may include pictures, common words, or hexadecimal character string to facilitate Internet searching mechanisms.