>>33164101The thing is, if you look at another article, the data you said is already made public. So, the system already exists.
https://shueisha.online/culture/52899?page=2According to that article, the author downloaded the data from here:
https://www.invoice-kohyo.nta.go.jp/download/zenkenI downloaded the one with 個人. The file name is the same as pictured in that article. The important data are the real name, "trade name", and workplace address.
I did try to search several indie JP VTubers with their "stage name", assuming its falls under "trade name".
Yeah, that includes Beatani. None of their names are listed in it, at least for now.