{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the considerations to keep in mind when choosing a service provider for blockchain upgrading?","a":"Security protection: During the blockchain upgrade process, service providers need to pay attention to network security to ensure the safety of data and assets, and prevent hacker  attacks and tampering."}]}],"pr":"fec15ec69c731a90e6a44848e8bd7ef61d1722d758410c3b76f82a40dd67935f"}