While starting FileMarket— a multifaceted platform that serves as a NFT2.0 storefront builder, cutting-edge marketplace, and a protocol for tokenizing, storing, and swapping files. At one point, we thought that it would be nice to have some private content linked to NFT to solve Ctrl+c — Ctrl+v problem. We’ve done some research and realized that there are no such technologies to have private content and the ability to transfer it while remaining hidden from the world. After that, we decided to design and implement a protocol for private NFT using encryption.