Centralized control, data manipulation, and security breaches are often issues that conventional digital marketplaces suffer from when it comes to loss of trust and compromised ownership. The key objective of this research is to improve privacy and security in Non-Fungible Token (NFT) market places using blockchain technology. The system is implemented on Ethereum platform, using Solidity based smart contracts to provide transparent and tamper proof transactions and secure user authentication as well as encrypted metadata handlings. Web3.js and MetaMask integration allows for user friendly interface with the blockchain. The proposed framework creates an environment in which people can easily create and trade NFTs. Zero-Knowledge Proofs (ZKPs) are integrated to enable privacy-preserving bidding (anonymous), allowing users to prove bid validity without revealing the actual amount. A user-friendly interface improves accessibility and usability and also the system’s security, transparency, and user-centric design through verified uploads, transaction logs, and ownership transfer audits. This framework demonstrates a viable model for a trustless and privacy-preserving NFT ecosystem.