This video is a recorded session led by Delphine Toutain, an expert in administrative procedures, specifically addressing questions from artists and entrepreneurs regarding their status as "artistes-auteurs" (artist-authors) and/or micro-entrepreneurs in France. The session covers navigating administrative processes with the URSSAF (French social security agency for the self-employed), including adjonction (addition of activity), tax declarations, and retirement contributions.
I cannot directly answer the follow-up questions because the provided transcript does not contain the specific information requested. The transcript discusses the procedures and processes, but it does not provide the exact phone numbers, website addresses, or legal details requested in questions 1, 2, 3, and 4. To answer those questions, you would need to either find that information within other parts of the video (if available) or consult the relevant official websites for the URSSAF and INPI.