{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the irreversibility of transactions?","a":"Decentralization: Blockchain adopts a decentralized network architecture, where data storage and processing are distributed across multiple nodes, and there is no single central controller. This makes the blockchain system less susceptible  to external attacks and improves data security."}]}],"pr":"624ade6aa4b5debe585317b0407cb4e21e79906dd13a3dacd61ad54d0004c807"}