{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are the payment rules designed for NFT projects in the blockchain?","a":"Token Standard: NFT projects usually adopt a unified token standard, such as ERC-721 and ERC-1155, which  define the basic attributes and interaction methods of NFTs."}]}],"pr":"a2093add66e42a787f75551692a55e215dd96b15ba6ac12aa9664de4acc3a136"}