Sophia, the AI-powered humanoid robot by Hanson Robotics, recently sold an NFT (non-fungible token) portrait for $688,888 USD. For those new to NFTs, it’s basically a unit of data on a digital ledger called a blockchain, where each one represent a unique digital item, thus making them unique. Access to the original file, tracked on their underlying blockchains, is restricted to the owner of the token, while only the digital files themselves are reproducible.