ALEXANDRIA, Va., March 17 -- United States Patent no. 12,579,542, issued on March 17, was assigned to Block Inc. (Oakland, Calif.).

"Systems and methods for key sharing for cryptocurrency transactions" was invented by Max Guise (San Francisco), Justin Williams (New York), Jesse Posner (San Francisco), Alexander Schoof (Leesburg, Va.), Jordan Mecom (San Francisco), Arvin Aminpour (Redwood City, Calif.), Allison Moyer (San Francisco), Kirill Zhukov (San Francisco), David Robinson (Brunswick, Australia), Bradley Ryan (Denver), Ryan Lanman (San Francisco) and Lindsey Grossman (High Falls, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for managing and using digital financial assets, such as cryptoc...