Xerox, the company behind the invention of photo estate, has won the patent for a new blockchain-based auditing system for electronic files on November 13. The patent was awarded by the US Patent and Trademark Office (USPTO).

The new DLT-based system that was originally tabled with the USPTO for approval back in August 2017. According to the filing, the patent envisioned a blockchain-based recording of revisions on any kind of documents in a computer. The recording would allow any third party to see what changes have been made during the authoring of any content. Due to the decentralized nature of a DLT system, the resulting documenting system cannot be tampered with when it comes to how edits were made.

Xerox explained the technology by describing a system of blockchain nodes that can essentially approve or disapprove each change made in a document. The series of nodes will allow the users to be alerted whenever a node disagrees with a document because it differs from a verified previous version.

According to Xerox, this patent has extensive application in the audit of many electronic records that are prone to tampering including medial and financial ones, tax returns and even educational documents like degrees, diplomas and certificates. The filing also singles out criminal investigation and that photos and DNA tests can thus be protected from future tampering with such a system in place.

This is not the first foray of Xerox into DLT-based technologies. Back in 2016, the company filed a patent for creating a time-stamped protocol for data such as pictures of copies of documents. This tech would have made data incorruptible including crucial pieces that are submitted in court as evidence in criminal prosecution and defense.

Tech companies are racing to get more and more blockchain patents. According to stats from this September, IBM had filed the most blockchain patents in the world.

 

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