(ICC) has opened a digital platform to enable people to submit complaints online

The Court (ICC) has opened a digital platform to enable people to submit complaints online with evidence of Israeli war crimes, crimes against humanity, genocide or aggression.
Anyone can upload information that the ICC can use, including videos and images.
“You do not necessarily need to be a victim or witness of the alleged crimes within the jurisdiction of the ICC listed above. Information can also be submitted collectively or through an organisation, as long as there is an identifiable sender. 

https://www.icc-cpi.int/victims/state-palestine