BSDI 2.0: A Policy Framework for Privacy, National Security, Digital Accountability, and Citizen Sovereignty

Abstract

Description:Bharat Secure Digital Identity (BSDI 2.0) is a citizen-centric, privacy-preserving identity overlay framework designed for India. It addresses the critical paradox of anonymous online harm versus mass surveillance. Unlike traditional systems that store raw identity documents, BSDI 2.0 uses Zero-Knowledge Proofs (ZKP), W3C Decentralized Identifiers (DIDs), and a Judicial Escrow Mechanism to enable attribute-based verification (e.g., age eligibility) without data disclosure. Platforms verify, but do not store, personal data. Lawful identity disclosure is only possible through multi-signature judicial authorization under strict proportionality and due process, anchored in Article 21. The framework is non-disruptive and interoperable with Aadhaar, DigiLocker, and DPDP Act 2023. It is a conceptual research framework for MeitY, NITI Aayog, and academic review. Keywords: Digital Identity, Privacy by Design, Zero-Knowledge Proof, DPDP Act, eIDAS, Judicial Oversight, Citizen Sovereignty