The "Official Ballot" watermark is embedded into the paper fibers during the paper making process provides clarity that cannot be duplicated by any other method.
U.S. Department of Homeland Security (DHS) Acting Secretary Chad Wolf and Cybersecurity and Infrastructure Security Agency (CISA) Director Christopher Krebs hosted a press conference to discuss CISA’s Election Day operations at 8:30 AM (EDT) on 11/3/2020
This is interesting.
Disinformation in 2020: Implications and Tools for Election Officials & Critical Infrastructure
Aug 13, 2020
U.S. Postal Service Counters Trump Attacks On Mail-In Voting With A New Blockchain Patent forbes.com/sites/jasonbre…
Some ballots have #watermarks indicating that the ballot is authentic. Watermarks are specific to each election and confirm the ballot was printed by an approved printing authority.