The US software company Salesforce won a patent to detect spam e-mails using blockchain technology. The patent filing was published on the U.S. website Patent and Trademark Office (USPTO) Tuesday 4 November.
Salesforce, which offers its customers a cloud-based email platform, has patented a solution that detects whether an initial email was changed during submission. In addition, the blockchain-based program could help improve existing filters that often fail to distinguish between spam and regular e-mails, such as promotional letters.
As explained in the technical part of the document, to ensure the authenticity of the message, the first e-mail server will record a selected component of the current message in a block to obtain the approval of other nodes. When the second server receives the message, check the blockchain record to find out if the data has been replaced. If the two messages match, the email is marked as desired. If the content has been changed, the mail is routed to the spam folder.
Although the patent specifically addresses the mail platform solution, Salesforce notes that blockchain can also solve problems with the authenticity of medical records, educational transcripts, deeds, property rights and legal documents.
As previously written by Cointelegraph, the email management platform Credo is also trying to tackle spam using blockchain. A 10 percent share of the project that plans to use tokens to verify the letters has been acquired by the Bitcoin Tim Draper investor in 2017.
Other US companies have actively filed patents for various blockchain solutions. International Business Machines Corporation, or IBM, is considered one of the largest providers of patent-related blockchain technologies. IBM has filed a total of 89 blockchain patents by August 31, beaten only by the Chinese giant Alibaba with 90 patent applications.
The most recent patent that IBM has presented is set to maintain secure boundaries between augmented reality (AR) objects in video games and physical locations in the real world. According to the document, a blockchain-based position database would allow mobile devices to get a signal that a certain position on AR would not be desirable.