{"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":"Data structure tracking: The transaction hash chain is a  data structure used to record the transfer of digital assets. It generates a unique hash value for each transaction by hashing transaction information, enabling ownership tracking of the assets."}]}],"pr":"63eaa7d654f9bf928a1aa55ec13814e8ab1614ed32bb38fe2d7e9bce7239142f"}