{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of hash functions in blockchain?","a":"Data Anti-counterfeiting: Hash functions have one-way characteristics, which means it is  difficult to derive the original data from the hash value. This enables the blockchain system to effectively prevent the insertion of fake data."}]}],"pr":"0a1ffaa5a871e880659bcec770413a25212678f6b4c9014aa9147b9d65c0620f"}