{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Blockchain has the following characteristics:\n\n1. Decentralization: Blockchain technology relies on a distributed network of computers to store and process data, which means that there is no single point of failure or control. This eliminates the need for a central authority or middleman, making the system more secure and transparent.\n\n2. Immutability: Once a block is added to the blockchain, it cannot be altered or deleted. This is because each block contains a cryptographic hash of the previous block, which prevents any changes from being made without altering the entire chain. This feature ensures that the data stored on the blockchain is permanent and tamper-proof.\n\n3. Transparency: Thanks to the decentralized nature of blockchain, all transactions are publicly accessible. This means that anyone can view the contents of a blockchain and verify the authenticity of transactions. This promotes transparency and accountability in the system.\n\n4. Security: Blockchain uses cryptography to","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, thereby rendering the entire chain ineffective. Therefore, to tamper with the data on the blockchain, it is necessary to tamper with all related blocks simultaneously and not be discovered during the tampering process."}]}],"pr":"eb8ca69a5c38227c427600ccc373fb3cd71fbd6bafdf7241a21a34d3480de405"}