nice, based on that - my browser has come up with an app ID of 712109809
so this one liner is working for me to get the UPC
$ curl -s 'https://www.qobuz.com/api.json/0.2/album/get?album_id=g92m3z1ag5gva' -H 'X-App-Id: 712109809' | jq -r '.upc'
3770004998838