NISTIR 8396 Open Media Forensics Challenge (OpenMFC) 2020-2021: Past, Present, and Future Haiying Guan Yooyoung Lee Lukas Diduch Jesse G. Zhang Ilia Ghorbanian Timothee Kheyrkhah Peter C. Fontana Jon Fiscus James Filliben This publication is available free of charge from: https://doi.org/10.6028/NIST.IR.8396