{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does sharding in blockchain achieve rapid expansion and state tracing?","a":"Consensus algorithm: In order to ensure the security and consistency of transactions within shards, an appropriate consensus algorithm needs to be adopted. Currently, there are several consensus algorithms that have been widely studied, such as Delegated Proof of Stake (DPoS), Practical Byzantine  Fault Tolerance (PBFT), and Secret Node Count (SNC). These algorithms allow the network to reach a consensus on the state of the blockchain and prevent malicious attacks"}]}],"pr":"82ae272cbdfe9a9880505f855829cf5f563143d0ca87d7b0253d1a5ec7416f32"}