A new Lenovo patent presentation suggests that the Chinese technological giant could use blockchain as part of the system to verify the validity of physical documents. 

https://i2.wp.com/criptotendencia.com/wp-content/uploads/2018/02/Lenovo-Blockchain.jpg?w=1000&ssl=1

In an application released by the United States Patent and Trademark Office (USPTO) last Thursday, Lenovo describes a configuration that uses 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 presented in August 2016, as shown by public records.

The processing machine decodes the signature and translates it into a digital "map" of the document, which can then be compared with the physical copy in question.The application says that the digital signature represents a "chain of security blocks", with a series of digital signatures that represent nodes in the security chain.

Lenovo clarifies that its "security blockchain" refers to a distributed database that maintains a continuously growing list of data records protected against tampering and revision. "

He goes on to say that each block contains "information about the physical document at various times".

Lenovo writes about your product :

"Using the security blockchain, anyone can validate that they have the current authentic physical document, even if there are several hard copies and several people have made entries in the modification chain. If there are fakes, they will appear as orphan blocks in the chain to validate a paper copy, a user of the electronic device takes an image of the code printed on the physical document. "

Lenovo states that the benefit of the product is that all parties that have copies of a particular document can ensure that "each one sees an exact copy" at a given time, eliminating the possibility that the text of the document has been substantially altered by "Ballpoint ink" after the signature has been applied.

This is not Lenovo's first experiment with the blockchain. Last year, Forbes reported that IBM had begun working with the company on a blockchain-based billing system.At that time, the report suggested that the agreement was intended to make billing and operational data processes easier to follow and transparent.