Decentralized AI Guardians to Improve Data Privacy and Security for the Users Using Blockchain

Mohit Garg
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Mohit Garg: Cognizant Technology Solutions US Corp., USA

International Journal of Research and Innovation in Applied Science, 2025, vol. 10, issue 4, 227-238

Abstract: By 2025, an estimated 67.9% of the global population—5.56 billion people—will rely on internet-connected AI tools like ChatGPT to automate tasks, write code, and solve complex problems. While these systems redefine productivity, their centralized architectures pose severe risks: opaque data custodianship, algorithmic surveillance, and vulnerabilities to breaches (e.g., model inversion attacks) have eroded user trust. This paper introduces Decentralized AI Guardians, a framework that merges lightweight AI models with blockchain technology to shift privacy control from corporations to users. At its core, the framework embeds AI “guardians†into blockchain nodes, enabling real-time, context-aware decisions about data access. Each guardian evaluates requests based on factors like app reputation, time, and user history. For instance, it might grant a navigation app daytime location access but deny a social media platform the same privilege at midnight. Permissions are stored on an immutable ledger, eliminating single points of failure. Two innovations ensure privacy and adaptability. First, federated learning allows guardians to refine decision-making collaboratively—edge devices process data locally and share anonymized threat patterns (e.g., phishing trends) without exposing raw information. This reduces latency to 12.3 ms, critical for IoT and mobile applications. Second, zero-knowledge proofs (ZKPs) cryptographically validate compliance without disclosing sensitive details, such as confirming a user’s age without revealing their birthdate.

Date: 2025
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