{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of hashing values in blockchain?","a":"Data Unchangeability: The hash algorithm encrypts the transaction information in the transaction block. When the data in the block changes, the hash value will also change accordingly. Therefore, by checking the changes in  the new and old hash values, it can be judged whether the data has been tampered with."}]}],"pr":"19b567af916b4ef7c1f0135d0d68756d4ab33cf2b03406a3cc708aed46aa7bee"}