NamelessMC

How can I add my own account verification method using the module?

Not currently possible.

To add your own verification method, youd need to edit most of the core files

I have an idea to do this with rcon. For example, a player writes his nickname Minecraft on the site and checks the script in the AuthMe or DynamicBungeeAuth database or in any other database,
if the player is logged in then sends him the code that needs to be written on the site for confirmation. If everything is OK, the script will update the player in the database as verified.

only there is a problem. How can I prevent a change of minecraft nickname on the site after confirmation?

It looks like you want username verification, why not use the spigot plugin to do this? https://www.spigotmc.org/resources/nameless-plugin-for-v2.59032/

Derkades:

It looks like you want username verification, why not use the spigot plugin to do this? https://www.spigotmc.org/resources/nameless-plugin-for-v2.59032/

It doesn't work for me.