Payments giant Mastercard (NYSE:MA) claims to have developed a new way of keeping cryptocurrency transactions private.

According to a patent application published Thursday by the U.S. Patent and Trademark Office, the payments giant has proposed a system of conducting transactions over a blockchain which would obfuscate both the point of origin and the amount being transacted.

As explained, the system would work by using an intermediate address during a transaction that interacts with the public key. The transaction data is then stored, while a new transaction and digital signature are generated using a private key. The new transaction data, which would contain the destination address and the payment amount, would be sent on.

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