{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The core security mechanisms in blockchain include:\n\n1. Consensus Algorithm: The consensus algorithm ensures that all participants in the blockchain network agree on the validity of transactions and maintain a consistent view of the ledger. Examples of consensus algorithms include Proof of Work (PoW), Proof of Stake (PoS), and Delegated Proof of Stake (DPoS).\n\n2. Cryptography: Cryptography plays a crucial role in securing the blockchain network. It encrypts sensitive data, such as private keys and transactions, and uses public-key cryptography to verify the authenticity of transactions.\n\n3. Immutability: Once data is recorded on the blockchain, it cannot be altered or deleted. This property ensures that transactions are permanent and secure, making it difficult for hackers to manipulate the ledger.\n\n4. Transparency: The blockchain is a distributed, public ledger that allows participants to view the history of transactions. This transparency promotes trust and accountability","a":"Distributed ledger technology: Through a decentralized network structure, ensure the consistency and security of data. Each node saves the complete ledger data, making it difficult for  attackers to tamper with the data."}]}],"pr":"ce9ef735baec72a0ecb9cd6ea96e4d07fc8c06f907489faf4c72eda6ccf3cd6a"}