US Patent Issued to nChain Licensing on Sept. 23 for "Nested threshold signatures" (British Inventor)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,233, issued on Sept. 23, was assigned to nChain Licensing AG (Zug, Switzerland).

"Nested threshold signatures" was invented by Michaella Pettit (London).

According to the abstract* released by the U.S. Patent & Trademark Office: "A computer-implemented method of requiring at least one of a sub-group of a group of participants to contribute to a threshold-optimal signature scheme, wherein the valid signature comprises a first signature component and a second signature component, wherein each participant has a respective private key share of a shared private key, a respective ephemeral private key share of a shared ephemeral private key, and the first signature component, wherein ...