ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,923, issued on Feb. 24.

"Digital-asset authentication with anonymity" was invented by Shmuel Silverman (Novato, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "During operation, a digital asset (such as a digital file or a token) on an electronic device receives, from the electronic device, a vector of challenges, where the vector of challenges includes N challenges and N is a non-zero integer. Then, the digital asset selects a subset of the vector of challenges. Moreover, the digital asset compares the subset of the vector of challenges with a stored second subset of a second vector of challenges. When the subset of the vector challenges matc...