{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do blockchain nodes install new versions during on-chain upgrades?","a":"Download the new version files to the node device: Node operators need to download the new version files to the blockchain node device, which can  be achieved through remote transmission methods such as FTP, SSH, etc."}]}],"pr":"49c92a5cb334739b5d4381c699a7504e7978ff779dd8acf0426e5c534c484a52"}