{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure that transaction records are not tampered with?","a":"Blockchain ensures that transaction records are not tampered with through various  technical means such as decentralization, encryption technology, and consensus mechanisms. First, blockchain adopts a decentralized architecture, distributing transaction records across multiple nodes in the network, thereby avoiding the single-point failure problem of centralized systems. Second, blockchain uses encryption algorithms (such as SHA-256) to generate unique identifiers for each block, ensuring the order and integrity between blocks. In addition, blockchain also adopts consensus mechanisms (such as proof of work, proof of stake, etc.), requiring nodes to solve certain computational problems or mortgage a certain amount of tokens when validating transactions and generating new blocks."}]}],"pr":"263057a48e82d96369b3776b38f0b7cdfad5bd08363ce27570537fd0e0f59743"}