{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the authenticity and immutability of transactions?","a":"Blockchain ensures the authenticity and immutability of transactions through techniques such as decentralization, distributed storage, and encryption for tamper prevention. Firstly, decentralization means that there is no need to rely on a centralized institution for transaction management and verification, thereby reducing single points of failure and manipulation risks. Secondly, distributed storage distributes data across multiple nodes, ensuring data synchronization and consistency while increasing the difficulty of tampering. Lastly, blockchain employs encryption algorithms (such as SHA-256) to encrypt and protect transaction data, making it impossible for unauthorized third parties to tamper or forge data.↵↵In addition, blockchain also  adopts consensus mechanisms such as proof of work (PoW) and proof of stake (PoS) to ensure the security and stability of the network. These mechanisms encourage nodes to participate in the validation and verification of transactions, thereby maintaining the integrity of the blockchain. Furthermore, the introduction of smart contracts enables automated execution of transactions based on"}]}],"pr":"748423c6d3b162c514a2cf39679f862cfe97c2037c992bd563c7c54272f6b475"}