• Mr E.Elanchezhiyan
• P.Jayalakshmi
• B.Induja

Lately, online interpersonal organizations (OSNs) have become progressively well known due to the quick improvement of versatile applications and the hazardous development in web-based connection. With the development and openness of innovation and web, the simplicity of posting and sharing photographs on interpersonal interaction administrations (SNSs) has expanded dramatically. The security of online photographs is frequently safeguarded cautiously by security systems. .Subsequently, it is a test to guarantee the security of delicate information while giving proficient and protection safeguarding interpersonal organization administrations for clients. In this paper, we propose PhotoChain, a blockchain-based secure photograph sharing system that gives strong scattering control to cross-informal community photograph sharing. Consolidated blockchain, Gaussian Blurr for Face Veiling, PreHash Calculation for Photograph respectability confirmation and Access Control, Instrument can accomplish secure information sharing, information recovering, and information getting to with decency and without agonizing over expected harm to clients' advantage. Rather than security components running independently in unified servers that have zero faith in one another, our system accomplishes predictable agreement on photograph scattering control through painstakingly planned brilliant agreement based conventions. At long last, this undertaking executes a model of the structure and convey it to a privately reenacted informal community. The broad examinations and security investigation show the security, viability and effectiveness of our proposed system.

Social media, block chain, photo chain, Gaussian blur, pre hashing technique privacy- preserving.

"PhotoChain: A Blockchain based Secure Photo Sharing Framework for Cross-Social Network", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 4, page no.c503-c508, April-2023, Available :http://www.jetir.org/papers/JETIR2304267.pdf

"PhotoChain: A Blockchain based Secure Photo Sharing Framework for Cross-Social Network", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 4, page no. ppc503-c508, April-2023, Available at : http://www.jetir.org/papers/JETIR2304267.pdf