{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain solve the problem of data credibility?","a":"Immutable data: Blockchain adopts encryption algorithms and consensus  mechanisms to ensure that data in each block cannot be tampered with without the agreement of a majority of nodes. This makes the data in blockchain highly authentic and credible."}]}],"pr":"0e30b8e533033b7c0d039dc3b2c28f32aa148fb70651817a692e663aeca06e09"}