If the "18+ claim" can't be linked to your identity and doesn't have any rate limits, someone can set up a token-as-a-service to sell tokens on the black market.
> Government can track all salts for your tokens, site can collect all salts, they can compare notes. There are so called policy mitigations currently: audits and requirements for governments to remove salts from memory the moment stuff is issued.
> Can the site owner and the government collude to track you if you are using bbs+? No. Math says no.
How does the math say no? Big tech companies already log absolutely everything. What's going to stop the government from keeping all the salts they're issuing and then mandating that site operators add the salts to their existing logs?
> Can they lie? Sure.
Well, they've lied to us over and over when it comes to surveillance, so I think at this point it's reasonable to assume they're lying unless it's technically impossible. Where's the in-person key verification that used to be in Whatsapp? How do the authorities get notified when someone makes a poorly thought out joke using Snapchat private messages before getting on a plane? Why is there a war on end-to-end encryption?
We're going to pay a fortune for these supposed zero knowledge systems and that's what it's about. Select companies are going to get paid to issue tokens and the scale is going to create a few new billionaires.
The people in charge are going to gain a ton of power when they betray everyone and disenfranchise us.