{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The key features of blockchain are:\n\n1. Decentralization: Blockchain technology operates without a central authority or middleman, which means that transactions are processed independently by individual nodes within the network.\n\n2. Immutability: Once a transaction is recorded on the blockchain, it cannot be altered or deleted. This is because the blockchain is designed in such a way that each new block contains a hash of the previous block, creating a chain of blocks that are linked together.\n\n3. Transparency: As each transaction is recorded publicly on the blockchain, anyone can view the history of transactions and the current balance of any given wallet.\n\n4. Security: Blockchain uses cryptography to secure the network and protect against unauthorized access. Each node within the network must solve a complex mathematical problem (known as mining) to validate transactions and create new blocks.\n\n5. Peer-to-peer (P2P) communication: Blockchain removes the need","a":"The key features of blockchain include decentralization, difficulty in tampering with data, and high security. Decentralization means that the blockchain system does not depend on a single central node or institution, but is jointly participated and maintained by numerous nodes, reducing the risk of single-point failure. The difficulty in tampering with data is due to each block containing the hash value of the previous block, forming a chain structure. Once the data in a block is changed, it will affect the hash value of subsequent blocks,  making the entire chain ineffective. In addition, blockchain adopts encryption algorithms (such as SHA-256) to encrypt and sign data, ensuring the security and integrity of the data. These features make blockchain"}]}],"pr":"97e9e10b174c4a44a440e7b06f5bbd5a9fffd5ac8a65cf763167081bfce80ec9"}