{"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":"35989bf95f75fb3e3aeb71492ece7f4f3a75bfd59d0fa3a5269a8086018eaf03"}