Clarification on services.json and urlClassification

[wesley-tan]

I am an undergraduate doing research on browser fingerprinting.

1.. What does services.json (https://github.com/disconnectme/disconnect-tracking-protection/blob/master/services.json) represent? Using Firefox, do these represent the 'accepted' or recorded URLs that are 'known' third-parties? That is to say, is it accurate to say that if one of the 'known' third parties under a particular first party is collecting data (for instance, exhibiting fingerprinting behaviour), the Firefox Enhanced Protection (as pictured) reads as 'no fingerprinters'?

2. By extension, I've visited a few sites that, under OpenWPM, has exhibited fingerprinting behavior. However, I have yet to find a website that shows that fingerprinting is exhibited. Does anyone have an idea why this may be the case? This may be an issue with the Firefox itself but I'm wondering if Disconnect may play a role in this.

Thank you!