{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do you drive testnet validator nodes in a blockchain?","a":"Node selection: First, according to pre-established rules, select a certain number of validator nodes from all eligible nodes. These  nodes usually have high computing power, stable network connections, and reliable storage devices to ensure the security and stability of the blockchain network."}]}],"pr":"e403fcc3de52c428669ad7ca0130033a64a20a5921aa97504105b6e824e39cf4"}