No, it uses librespot which is a open re-implementation of libspotify, which was Spotify's old, but now pulled, SDK. The risk however is that when Spotify think

No, it uses librespot which is a open re-implementation of libspotify, which was Spotify's old, but now pulled, SDK. The risk however is that when Spotify thinks it's no longer worth supporting older harder devices that rely on the original libspotify, they'll pull the endpoints and remove functionality (already happened to search, for example, but they could use the newer APIs for that - it's going to be hard when they do it with playback, as the new APIs require DRM).