The proliferation of advanced bots and synthetic media threatens ethics, rights, and trust online. This paper comprehensively analyzes an emerging solutionlinking cryptographic hashes of human DNA biometrics to blockchain-registered digital identities. A robust framework examines the viability, limitations, policies, and research pathways for blockchain-DNA personhood verification. The paper proposes integrating novel DNA hash protocols into internet communication standards to enable multifactor identity authentication. Challenges around access, discrimination, and implementation are highlighted, with recommendations for inclusive governance centered on human rights. Thoughtful development of blockchain-DNA ecosystems could significantly expand digital empowerment but requires a judicious appraisal to actualize equitably.