Announcement here:
https://www.unesco.org/en/articles/unesco-launches-global-call-best-practices-open-science
The resulting compendium of best practices will be a useful tool to better understand the current landscape of open science, share lessons learned, identify and connect open science actors around the world, and further develop innovative solutions for open science in a collaborative, inclusive and transparent manner.
I think GOSH could definitely have a role to play here. Anyone willing to submit something?