I cannot prove wrong something that doesn't exist.
I would guess some banks ran some funky XRP pilot back in the days but to say the whole banking system runs on XRP You are literally drowning in the kool aid my man.
XRP is so broken Ripple has to literally bribe companies into using it
Not my fault you dont understand context and what SWIFT is, I know for a fact that large amount of insitutuonal banks used XRP instead of SWIFT!
RBC Revenue Increase US$35.28 billion (2016) BMO Revenue Increase USD$19.188 billion CIBC Revenue Increase C$15.0 billion (2016) Santandlet Scotia Bank Revenue Increase C$26.049 billion (2016) TD Bank Testing Revenue Increase $29.9 billion CAD Ripple Takes Over Canada Ripple Takes Over Canada