There is plenty of services like this nowadays. I recall TrensferGO and Revolut.
There is even a service for fees comparison amongst those services, developed be hackernews fellow reader:
https://news.ycombinator.com/item?id=20819538
I am interested in the technical aspect of implementing such a system.
I know the founder of
https://www.fakeskiller.com
which is a browser extension for highlighting fake news (they also released a mobile app not so long ago).
They use fact checking organizations to classify news as fake news and highlight posts in social media, which contain links to fake news. They also provide link to rebuttal.
But since there is always a lag between producing clickbait fake news and working on proving it's a fake, I assume those who fight disinformation and propaganda will be on the losing side.
That's why the founder of Fakeskiller always invites everyone on educating those "useful idiots", who are sharing those fakes and sharing truth with them.
But can the propaganda be effectively fought technically? I assume, no.