{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do blockchain validators regularly clean up chain data?","a":"Detect and filter invalid data: Blockchain validators need to detect and filter out invalid data, such as illegal  transactions, violations of blockchain consensus rules, or duplicate transactions."}]}],"pr":"2b116b6568f6c1d7483fe0aa1a656f592cdb757339b003e4249bbfc8cbe79e44"}