{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Blockchain has the following characteristics:\n\n1. Decentralization: Blockchain technology operates without a central authority or middlemen, which means that transactions are processed directly between participants without the need for intermediaries.\n\n2. Immutability: Once data is recorded on the blockchain, it cannot be altered or deleted. This ensures the integrity of the data and prevents fraud or tampering.\n\n3. Transparency: Blockchain operates on a public ledger, meaning that all transactions are visible to everyone involved in the network. This promotes transparency and accountability in financial transactions.\n\n4. Security: Blockchain uses cryptography to secure data and protect against unauthorized access. Each block contains a cryptographic hash of the previous block, creating a chain of blocks that is difficult to tamper with.\n\n5. Autonomy: Blockchain technology is autonomous, meaning that it operates independently of any government, institution, or individual. This allows for decentralized applications","a":"Immutable data: 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 the blockchain, it is necessary to tamper with all related blocks simultaneously, and not be detected by other blocks during the tampering process."}]}],"pr":"48dbe6348e013fd11367ffa2ce5b8039bea974edb49b85ceb640fdb0159f080e"}