Go to ipleak.net and activate the torrent check, paste the magnet link into your torrent app while on VPN and it will tell you what IP address it detects, if it’s not the same as your regular ISP then you can verify that it’s using your VPN and not your standard internet connection.
I do this exact thing and after a year or so of running my invidious instance locally I’m not banned and never had any issues and I use it about 5 hours per day give or take. Hope this helps.