by Yagmur Ozturk, Solal Pirelli, Reese A. K. Richardson Investigating the integrity of published scientific papers is key to the scientific process, but the necessary knowledge is in short supply. We present COSIG, an open collection of meta-scientific guides enabling anyone to perform forensic peer review. Investigating the integrity of published scientific papers is key to the scientific process, but the necessary knowledge is in short supply. This Community Page presents COSIG, an open collection of meta-scientific guides enabling anyone to perform forensic peer review.