As of this moment, the plugin only works for the WordPress default "post" and with "categories" taxonomy. I'm still thinking ways to incorporate custom taxonomies. As of now, it's all the basic features incorporated as I want it as simple as possible.

I'm already in the midst of enabling custom post types and custom taxonomies. (I'm careful about it because some custom post types used by third-party plugins used it as objects for their application and it might contain sensitive data. It would be disaster if those sensitive data are posted in the blockchain.)

Thanks for your recommendation.