what does a 'ringing confirmation ' mean in:?

Question

First, they learned that overall, the sequences of base pairs that make up both species' genomes differ by 1.23%--a ringing confirmation of the 1970s estimates--and that the most striking divergence between them occurs, intriguingly, in the Y chromosome, present only in males.

Answer 1

I think this expression began when people used to test if coins were real or counterfeit by dropping them on a hard surface. A counterfeit coin would "thud", but a real coin would ring when it struck the surface. Thus a "ringing confirmation" was an indisputable demonstration of something.