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A new @Lenovo patent filing suggests that the Chinese technology giant could look to using #blockchain as part of system for verifying the validity of physical documents. In an application released by the U.S. Patent and Trademark Office (USPTO) last Thursday, Lenovo describes a set-up that utilizes digital signatures encoded in physical documents, which can be processed by computers and other machines, to verify the legitimacy of a document. The application was first submitted in August 2016, public records show. The processing machine decodes the signature and translates it into a digital “map” of the document, which can then be compared to the physical copy at hand. The application says that the digital signature represents a “security block chain,” with a series of digital signatures representing blocks in the security chain. Lenovo clarifies that its “security blockchain” “refers to a distributed database that maintains a continuously growing list of data records secured from tampering and revision.” It goes on to say that every block contains “information about the physical document at various points in time.”

https://www.coindesk.com/lenovo-seeks-blockchain-patent-document-validation-system/

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