{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The longest chain rule in blockchain is as follows: within a blockchain network, nodes continuously validate and confirm transactions, and whenever a new block is generated, nodes will compare the newly generated block with the existing chains. If the newly generated block is found to be valid and its hash value is greater than the hash value of the previous block in the longest chain, then the new block will be added to the end of the longest chain, and the longest chain will be updated. This process continues until a new block with a higher hash value is generated, resulting in the longest chain being continuously updated and improved.","a":"The longest chain rule in blockchain refers to the phenomenon that nodes (miners) in a distributed ledger system will choose to join the longest valid blockchain as the main chain and regard it as the authentic blockchain. This rule is one of the core components  of consensus mechanisms in cryptocurrencies such as Bitcoin, which is known as Proof of Work. In the Bitcoin network, when mining new blocks, nodes compare the workload of multiple candidate blocks and select the chain with the highest workload as the main chain. The longest chain rule ensures consensus within the network, allowing all nodes to reach agreement on the version of the blockchain. Meanwhile, the longest chain rule also makes it difficult for attackers to tamper with blockchain data."}]}],"pr":"523cb22c0ec4dbc58df5823a9294250fd763f4e9cb9e6394948d16bf2844564d"}