Opening up ‘Zero-Knowledge Proof’ technology

Age assurance will be the gateway to government issued(via corporate proxy) internet usage permits.

Nope, no blockchain involved.

True, but I'm also not convinced that a ten year old being able to be face to face with hard-core BDSM and incest fetish porn within 40 seconds of opening a web browser is healthy.

I don't like this but don't have another solution other than the porn industry self-policing which isn't promising.

Author (of the code) here.

The context is the US mobile drivers licenses and the forthcoming digital identity documents in the EU. The government gives you an electronic document stored in your device, and now the problem is, why would you ever want to give a copy of your document to a third party. This code solves the problem via zero-knowledge presentations of the document. This is real stuff already integrated in Google Wallet, not vaporware. See also the paper linked from GitHub. Ignore the marketing in TFA.