"This really hits the core challenge of our digital age—how do we ensure fairness and trust when AI can mimic us perfectly, and personal data is so vulnerable? The idea of verifiable, yet fully secure identity checks is fascinating. I wonder if a combination of zero-knowledge proofs and blockchain could finally give us a system where we’re recognized as unique humans without ever exposing sensitive info. Truly makes you rethink what 'proof of brain' could actually mean!