{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the delegation assignment information module in a blockchain record the extraction reward height of the delegator?","a":"Delegator's identity information:  Including names, addresses, etc., used to uniquely identify the delegators."}]}],"pr":"f23677bb8bea76551a04600f7d9cdc37df0d977d5f1a34f26befdcaed5e9d4ac"}