{"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":"2f7cff619da9064e74310b441db793e449faa7347c57e0874581fa67712fc499"}