{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the ways to handle programming failures in a blockchain?","a":"Fault investigation: First, conduct a fault investigation on each node in the blockchain  network to find out the problematic nodes and specific reasons."}]}],"pr":"4ca41dfed3d35fd4a3a45e7fe28dff39049e1afaeb96e03ccf38ac99dcb8b7dc"}