https://patentimages.storage.googleapis.com/b5/ec/26/59bd11…

Twetch · March 31, 2021

https://patentimages.storage.googleapis.com/b5/ec/26/59bd117efc2c39/US20190205980A1.pdf

https://patentimages.storage.googleapis.com/1e/7c/c2/a6fdffca7b6376/GB2562622A.pdf

Replies

Twetch · March 31, 2021

https://patents.google.com/patent/EP3420669A1/en?oq=nchain+blockchain+based+accounting+3420669