In a patent application published by the US Patent and Trademark Office last Thursday, Lenovo describes a system that uses digital signatures encoded into paper documents to verify the documents' authenticity.
“Using a blockchain, everyone can be sure that they have a current, authentic physical document, even if there are many paper copies of it and multiple people contribute data to the chain. If forgeries of such a document appear, they will be displayed as separate blocks in the chain. To verify a paper copy, the user of the electronic device only needs to photograph the code on the physical document,” the statement said.
The advantage of the product is that all parties holding copies of the document can be sure that it is a real document, eliminating the possibility of significant changes to the text after adding an electronic signature.
This is not the first time Lenovo has used blockchain technology in its business. In the past, Lenovo, in collaboration with IBM, developed a blockchain invoicing system that makes the relationship between buyers and sellers more transparent.
According to coindesk
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