Visa's Patent To REPLACE CASH using Ethereum block chain.

According to the US Patent office (USPTO) VISA has had their patent PUBLISHED for DIGITAL FIAT CURRENCY.

Here is a link to the Official Patent :
https://pdfaiw.uspto.gov/.aiw?PageNum=0&docid=20200151682&IDKey=5E7C13E07C78&HomeUrl=http%3A%2F%2Fappft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO1%2526Sect2%3DHITOFF%2526d%3DPG01%2526p%3D1%2526u%3D%2Fnetahtml%2FPTO%2Fsrchnum.html%2526r%3D1%2526f%3DG%2526l%3D50%2526s1%3D20200151682.PGNR.%2526OS%3D%2526RS%3D