@Dnatjugweme ***********
Hey, thank you for your answer. Are you sure that a bank history is enough ? You can only see the total money I have on each account to this day, and then each transaction I had for the past 6 months. But you can't see clearly in january I had X, in february I had X, etc.
And for the SIRENE document, I couldn't find it on insee, I could only find "Avis de situation" which look relevant.