A patent has been filed by Chinese multinational PC company Lenovo with the US Patent and Trademark Office (USPTO) that will “verify integrity of physical documents” using a “security Blockchain” technology.
The news came just as the Chinese government is cracking down on cryptocurrency activities in the country. The filing, however, was submitted back in August 2016. Based on the records, the patent will make use of encoded digital signatures in documents, instead of physical signatures written down with ink. It is the aim for the digital signatures to be able to provide a strong security measure that will prevent modification of the document after the signing.
More specifically, the patent’s “Brief Summary” explains that a processor will be identifying an “integrity symbol” embedded within the document, which should then convert it into an “integrity map.” After which, the map will be compared with the original, physical document to verify and ensure the integrity of the document. Lenovo is confident that with the security Blockchain, they can be sure “that they have the current authentic physical document even if multiple paper copies exist and multiple people have made entries in the chain of modification.” In the event of multiple fake copies coming out, the same would “show up as orphaned blocks in the chain.”