{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do sharding schemes in blockchain ensure data consistency between shards?","a":"Consensus Algorithm: In blockchain shards, nodes need to reach consensus to confirm transactions and generate new blocks. Consensus algorithms such as Proof of Work (PoW) and Proof of Stake (PoS) ensure consistency of data between shards. In the PoW consensus algorithm, nodes need to solve  a puzzle to obtain the authority to create a new block, which consumes a large amount of computing resources. Therefore, it is difficult for malicious nodes to tamper with the blockchain in a short period of time."}]}],"pr":"de8ec452de9061f5301dc8b06710caee773d398b931b77d08124b32865960be6"}