{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to back up and protect the metadata of NFTs in a blockchain?","a":"Encryption Technology: NFT metadata is encrypted using encryption algorithms (such as SHA-256) to ensure data  security. Only users with the correct keys can decrypt and access the data."}]}],"pr":"9d5866f22547ad6de7259a5a14f12914d6a33d34c80ebcf016696c3479ec0fc1"}