{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do testing and validation nodes ensure backward compatibility in a blockchain?","a":"Download and install the full node software for the blockchain to obtain the complete blockchain data.↵2. Synchronize the blockchain data of the full node to ensure that the light node has the same understanding of the blockchain as the full node.↵3. Implement the specified rules of the blockchain protocol in the light node's software, which includes validating transactions and blocks according to these rules.↵4. Participate in the consensus process of the blockchain, such as voting"}]}],"pr":"e898fc31808076aaa7baa538fbd97a07216fbceceffa8f1b15fa9c8622c7bc85"}