I worked in some companies providing email/chat support to customer's inquiries. One was with eBay and worked for them for more than 2 years. The other one is for more than 4 years and worked as a game master, attending to customer's inquiry about the virtual game that we support.
Onlinejobs.ph "ID Proof" indicates if "they are who they say they are".
It DOES NOT indicate skill level.
ID Proof scores are 0 - 99 with 99 being the best. It is calculated based on dozens of data points.
It's intended to help employers know who they're talking to is real, and not a fake identity.