Read the October edition of COPE Digest newsletter with a focus on Data and Reproducibility and a summary of our European Seminar in Leiden in Deborah Poff's letter from the COPE Chair. We also share the new COPE Authorship Discussion Document and announce our November Forum discussion on "Artificial intelligence in decision making". We say goodbye and thank you to six of our Council members who have come to the end of their term. Plus the monthly update on news, collated by COPE Council members. #DataReproducibility