1904: Pope Pius X accords Joan the title “Venerable”.
1909-04-11: Joan is given the title “Blessed”.
1920-05-16: Joan is canonized by Pope Benedict XV.
However, she is not recognized as a Martyr, and the documents of her trial by the council of theologians in Poitiers (and other documents) remain lost to history. Maybe withheld in the Vatican Apostolic Library...