The digital transformation of criminal justice systems is reshaping investigations, prosecutions and court proceedings by changing how evidence is generated, preserved, verified and evaluated. This structured review examines the admissibility of digital evidence and the prospects for integrating blockchain technologies into law enforcement practice through a methodologically transparent synthesis of legal, forensic, governance, and computer-science literature. The analysis covers electronic case management, digital evidence lifecycle controls, blockchain-enabled chain-of-custody systems, smart-contract-assisted workflows, privacy-preserving architectures and cross-border evidentiary recognition. The review develops a blockchain-enabled evidentiary governance framework that links digital evidence generation, chain-of-custody management, blockchain verification, legal admissibility, and judicial trust outcomes. It also distinguishes established findings, such as the operational value of electronic case management and cryptographic verification, from emerging pilot evidence and future hypotheses concerning automated enforcement, cross-jurisdictional ledgers and autonomous justice systems. The synthesis shows that blockchain can strengthen evidentiary integrity when deployed as a governed verification layer combining permissioned architecture, off-chain evidence storage, on-chain metadata, validated consensus rules and auditable institutional oversight. However, its implementation remains constrained by governance failures, smart contract vulnerabilities, oracle and data-quality risks, scalability limits, privacy conflicts, legal uncertainty, institutional resistance and cost-benefit trade-offs. The review concludes that criminal justice digitalisation requires socio-technical governance rather than technological substitution, with legal reform, professional capacity, interoperability standards and rights-preserving design forming the foundation for trustworthy digital proceedings.
Cybercrime investigation in India has entered a new legal phase following the commencement of the Bharatiya Nyaya Sanhita, 2023 (BNS), the Bharatiya Nagarik Suraksha Sanhita, 2023 (BNSS), and the Bharatiya Sakshya Adhiniyam, 2023 (BSA). These enactments operate alongside the Information Technology Act 2000, the Digital Personal Data Protection Act 2023 (DPDP Act), sectoral regulation and specialised cybercrime institutions. This article argues that the principal weakness of the present framework is not a lack of offences, but fragmentation across legal classification, investigative procedure, digital-evidence rules, forensic practice, privacy governance and institutional coordination. Using doctrinal legal research supplemented by official policy and institutional material, the article develops an investigation-chain framework linking complaint triage, offence classification, preservation, lawful acquisition, forensic examination, attribution, financial tracing, cross-border evidence, prosecution and adjudication. It evaluates the continuing interaction between general criminal liability under the BNS and technology-specific provisions of the Information Technology Act, while examining the evidentiary significance of electronic records under the BSA. Particular attention is given to cloud evidence, cryptocurrency, ransomware, artificial intelligence and deepfakes. The article contends that technological traceability must not be equated with human attribution and that evidentiary reliability depends on the entire acquisition-to-trial chain. It proposes harmonised investigative protocols, accredited forensic capacity, specialist prosecution and judicial training, auditable access to personal data, improved cross-border preservation mechanisms, and a human-verification requirement for significant AI-assisted investigative outputs. The analysis contributes an India-specific but internationally relevant model for assessing whether contemporary cybercrime law can produce reliable, rights-compliant and trial-ready investigations.
The rapid growth of cybercrime has significantly increased the importance of digital evidence in criminal investigations and judicial proceedings. However, ensuring the admissibility and reliability of electronic evidence remains a complex challenge due to technological advancements, evolving legal standards, cross-border investigations, and concerns regarding evidence integrity. This narrative review examines the legal and forensic dimensions of digital evidence by synthesizing contemporary literature on its sources, characteristics, governing legal frameworks, and the factors influencing its acceptance in court. The review discusses key issues related to authentication, chain of custody, expert testimony, procedural fairness, and evidence validation, while also evaluating the impact of emerging technologies, including artificial intelligence, blockchain, the Internet of Things, and deepfake detection on digital forensic practice. The findings indicate that reliable digital evidence requires standardized forensic procedures, scientifically validated investigative methods, and harmonized legal frameworks capable of addressing rapidly evolving cyber threats. Strengthening collaboration among forensic practitioners, legal professionals, researchers, and policymakers will be essential for improving evidence integrity, enhancing judicial confidence, and supporting effective cybercrime investigations. The review provides an integrated perspective that contributes to ongoing discussions on developing secure, transparent, and legally robust digital evidence management practices.