{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is multi-signature implemented in blockchain?","a":"Create a multi-signature wallet: The user creates a multi-signature wallet, which usually contains two or more private key holders. These  private key holders can represent different roles, such as investors, guardians, etc."}]}],"pr":"b36b216e740204041bad76bba976447bfa4571c58feecdf0cd04aa39b23a578e"}