Blocksphere: A Decentralized Social Media Platform

Authors: Rahul Patel, Madhav Tiwari, Harshita Reddy, Prof. Shubham Upadhyay

Abstract: BlockSphere is a decentralized social media platform designed to transform online interactions using Web 3.0 technologies. Unlike traditional platforms that depend on centralized servers and third-party control, BlockSphere focuses on user privacy, data ownership, and resistance to censorship through blockchain and decentralized storage. The system is built on the Ethereum blockchain and uses Solidity- based smart contracts to handle user authentication, content management, engagement features, and financial transactions. To secure media storage and prevent tampering, BlockSphere integrates the Inter Planetary File System (IPFS), enabling safe storage and retrieval of user data. Posts are created and stored on IPFS, ensuring integrity and transparency. Real-time communication is supported through blockchain-powered messaging, providing private and immutable chats. Smart contracts also govern the follow/unfollow mechanism for transparency, while token-based access allows exclusive content sharing in premium groups. The frontend, developed with Next.js and Web3.js, delivers smooth wallet integration, gas fee optimization, and compatibility across devices. Reliability is ensured through extensive testing with Hardhat on local and Ethereum testnet environments before deployment to the mainnet. By prioritizing decentralization, transparency, and user autonomy, BlockSphere offers a new model for social media. Planned upgrades include Layer 2 scaling, cross-chain support, NFT-based monetization, and DAO-driven governance, further positioning BlockSphere as a leading decentralized networking platform. Keywords— Web 3.0; Decentralized Social Media; Blockchain; Smart Contracts; IPFS; Ethereum.