{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the application scenarios of multi-signature in blockchain?","a":"Secure Storage: Users can store their digital assets in multi-signature wallets with multiple key  management systems."}]}],"pr":"74012e61b3893329777e45975d7689b37ab829c185baff52097a05295ba492ce"}