{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can I query difficult-to-obtain data in a blockchain?","a":"Identify the type of data to  query: Determine the type of data you need to query, such as on-chain transactions, account balances, transaction history, mining difficulty, etc."}]}],"pr":"bab89ad5d532e31bdb6cce2f1bb3f03f86f61280f30be5fcdcd7b869aa1da8bf"}