Even if they exist, I think a few points with that :
1. Privacy, because let's suppose that a second member confirmed that X member actually ctb (By any method), so this could be a legal problem for not calling the authorities or inform anything about the procedure ;
2. It could be a civil tort problem, since let's suppose that we announce that X member passed away, then the authorities could make the connection between the announcement and the real suicide case, and fuel any civil lawsuit initiated by the family or even the prosecutor's office of the local country ;
3. I insist that any suicide should be a private, personal act and even if we follow someone on the process (Ex. Via Discord or something), I think that that person deserves privacy and not announce at this forum that the CTB was successful, even if the original person requested or authorized to do so.