NFTs don’t just provide a kind of digital “deed.” Because blockchains are programmable, it’s possible to endow NFTs with features that enable them to expand their purpose over time, or even to provide direct utility to their holders. In other words, NFTs can do things — or let their owners do things — in both digital spaces and the physical world. https://hbr.org/2021/11/how-nfts-create-value Avax programs in Solidity - Sol in Rust - Btc in Cobol, etc