NFTs are stored on a digital ledger called the blockchain. Each NFT has a specific token ID that is linked to a smart contract, which is stored in various blocks on the blockchain. Contrary to popular belief, NFTs are not stored in your wallet. Rather, your wallet provides access to your stored digital assets. Your wallet has its own private key which controls the address of your wallet on the blockchain. Now, considering you are in complete control of your wallet address via your private key, you become the sole owner of the NFT. Without access to the wallet address in which an NFT is stored, nothing can be done with that NFT.