Global health organizations are rolling out plans for unified digital identity systems tied to lifetime vaccination records and AI-powered monitoring infrastructure. The proposed framework links biometric data, health credentials, and movement patterns into centralized databases accessible across borders. Critics in the privacy tech space are raising eyebrows—this setup contradicts everything decentralized identity solutions stand for. While traditional institutions push for top-down tracking architectures, blockchain-based alternatives offer self-sovereign identity models where individuals control their own data. The contrast couldn't be starker: one path leads to permanent surveillance grids, the other toward cryptographic proof systems that don't require handing over personal information to centralized authorities. As these competing visions clash, the crypto community's watching closely. Will nation-states adopt permissioned ledgers that preserve surveillance capabilities, or will genuine decentralization win out? The infrastructure being built today determines whether digital identity becomes a tool for freedom or control.