Intellectual Property India Publishes Patent Application for Electronic Evidence Authentication System – A Secure System Using Blockchain And Cryptographic Techniques To Preserve The Integrity And Chain Of Custody Of Digital Evidence

MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202631090827 A) filed by Swapnila Roy; and Dr Gizala Hashmi on July 26, 2026, for Electronic Evidence Authentication System – A Secure System Using Blockchain And Cryptographic Techniques To Preserve The Integrity And Chain Of Custody Of Digital Evidence.

Inventors include Swapnila Roy; and Dr Gizala Hashmi.

The application for the patent was published on July 31, 2026, under issue no. 31/2026.

Abstract: The system comprises an electronic evidence acquisition module configured to collect electronic evidence from multiple digital sources, including electronic documents, emails, multimedia files, cloud repositories, mobile devices, Internet of Things (IoT) devices, surveillance systems, and social media platforms. A cryptographic processing unit generates secure hash values, digital signatures, encryption keys, and trusted timestamps for authenticating each evidence item. A blockchain-based evidence registration module records cryptographic hashes, metadata, timestamps, and ownership information on an immutable distributed ledger to ensure tamper-resistant evidence preservation. A chain-of-custody management module continuously records evidence acquisition, transfer, access, examination, storage, and retrieval events, while an integrity verification and tamper detection engine periodically validates evidence authenticity by comparing recalculated cryptographic hashes with blockchain records. The system further includes a secure access control module implementing role-based authorization and multi-factor authentication, an audit logging and report generation module producing immutable forensic reports and chain-of-custody certificates, and interoperability interfaces enabling secure integration with forensic tools, judicial information systems, law enforcement databases, enterprise platforms, and cloud repositories. The invention provides a scalable, decentralized, and legally reliable framework for digital evidence authentication, significantly enhancing transparency, traceability, admissibility, and trustworthiness of electronic evidence in forensic investigations, judicial proceedings, regulatory compliance, and cybersecurity applications.

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