ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,499,276, issued on Dec. 16.

"Digital signature system" was invented by Paul A. Cianci (Farmington, Conn.) and Edgar N. Garcia (Waxhaw, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure introduces digital signature systems having dynamically validated, multi-level signature seals. An exemplary digital signature system includes a multi-level signature seal with an attestation and machine-readable code configured to direct a user, upon scanning or selecting the machine-readable code, to a validation portal for the attestation. The validation portal includes an artifact graphically indicating a current validation status of the attestation ...