I've researched the official SoundCloud API, and I couldn't get it to work. It was always returning 403 Forbidden error as a response. I've tried inserting the client_id and the Authorization header with OAuth token.
But, I've tried to use API-v2 and that seems to be working. Is there any documentation on how to use this version and is it legal?
Also, is there a way to fix this problem with the official API? I cannot register an app since SoundCloud has closed it down years ago.