> … wouldn't that mean you'd want to move your valuable NFT assets to a cold wallet? If they're in a cold wallet, you then wouldn't be able to prove you own the

> … wouldn't that mean you'd want to move your valuable NFT assets to a cold wallet? If they're in a cold wallet, you then wouldn't be able to prove you own them to use them in a game. Just provide a way for the NFT owner to associate their assets with a particular in-game account, e.g. by storing the username on the blockchain with the NFT, or by signing a file with the username and details of the last trade. Once that's done they no longer need to keep the keys online. When the NFT is sold the new owner can update the username to refer to their own account. Presumably all the usual security measures such as hardware wallets for key storage would continue to work for these NFTs, at least as long as you're not forced to use game-specific wallet software.