This month’s theme at COPE is our second Core Practice “Authorship and contributorship”, and what we share in our resources that support good practices. There are two perspectives on authorship and contributorship: what does it mean to be an author? and the role of research institutions. Case of the month is Authorship Issues from a Disbanded Consortium and we have the summary of the Forum discussion on Expressions of Concern. The letter from the co-Chairs brings in authorship questions raised at a recent COPE workshop in Germany.