{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of transaction hash in a blockchain?","a":"Encryption protection: The hashing algorithm can encrypt transaction information to ensure the security and integrity of the data. The hash value of each block is connected to the hash value of the previous block, forming  an unchangeable chain structure."}]}],"pr":"93ee40726a765de750c8dfcf72570d3e861470b22a9df123d0fd2641bd487ba0"}