In short, not many networks are checking signatures because not many networks are publishing them. Take a look at this presentation from 2009. http://www.ausno

In short, not many networks are checking signatures because not many networks are publishing them. Take a look at this presentation from 2009. http://www.ausnog.net/sites/default/files/ausnog-03/presentations/ausnog03-michaelson-rescert.pdf http://www.ausnog.net/sites/default/files/ausnog-03/presenta... I've been out of the space for almost as long, so would love to be wrong, but I think its fair to say that not much has improved on this front since then.