{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of versioned transactions in blockchain?","a":"Data cannot be tampered with: Each block contains the hash value of the previous block, forming a chain structure. Once the data in a block is changed, it will cause the hash value of the subsequent blocks to change, rendering the entire chain invalid. Therefore, to tamper with the data on a blockchain, one needs to tamper with all related blocks simultaneously and not be discovered during the tampering process."}]}],"pr":"aa6c0c43cf39d9187dfd5476c4819d972d6f0bd0aefafdae0ddd7d6d09937f30"}