{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do testing and validation nodes in a blockchain verify the security and reliability of new programs?","a":"Build and deploy a testing environment: To ensure the security of the new program in  the actual runtime environment, testing and validation nodes will set up a testing environment similar to the blockchain network. This allows them to thoroughly test the new program without affecting the real network."}]}],"pr":"fda4cc583fdd186fec3c8f534ae3ebd5b2483c7d995a498e12164d83aec226b0"}