I've been in a BPO industry for more than 10 years. I've work as a Telesales Representative at Eastwood Citibank, Customer Service Representative at PLDT, QA/Data Analyst at PLDT, Chat/Email Support at HobbyKing (world wide RC products) and a Customer Service Representative at Telsta (Australian Telco)
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.