{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Is it feasible to change the rules in a blockchain?","a":"Rule changes in blockchain are feasible but with certain difficulties. To modify information in the blockchain, the consent of more  than half of the nodes is required, and the information in all nodes needs to be updated. These nodes are usually controlled by different entities, making it extremely difficult to tamper with the information in the blockchain. However, with the development of technology and the optimization of consensus mechanisms, more flexible and secure ways of rule changes may emerge in the future. In summary, although rule changes in blockchain pose certain challenges, it is feasible to achieve adjustment and optimization of rules through the improvement of consensus mechanisms and technology."}]}],"pr":"419f6c93f7c9fe1b5a2df7c1fb5b87835ad98915da8c5c7b6578eace7d0e12d4"}