Blockchain-based feedback system using NFT in e-commerce

Online shopping offers consumers a way to go shopping and purchase services and goods at reasonable prices through the Internet; however, product selection in terms of quality, price, and incredible trust is an issue. Various sources of feedback may exist for the same product, which can critically affect perceptions about it. It may eventually lead to a person buying or simply ignoring the product. It is necessary to ensure that these comments are not both fraudulent and legitimate. In this context, blockchain has now come to light as a promising technology that offers customers a reliable and unchangeable feedback mechanism. This work proposes a blockchain-based feedback system using non-fungible tokens (BFSN) as a framework to evaluate items through feedback. In addition, this paper also uses the interplanetary file system to store the metadata of e-commerce products to avoid storing large amounts of data on the blockchain. The empirical results prove that the proposed framework completes the order of milliseconds. The buyer and seller’s individual transaction details stay private and immutable with this proposed method, and zero-knowledge authentication is used for any transactions.