{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the technical principles of blockchain?","a":"Consensus algorithm: Nodes in the blockchain network need to reach consensus to decide whether new blocks should be added to the chain. There are various consensus algorithms, such as Proof of Work (PoW) and Proof of Stake (PoS),  that help achieve this goal."}]}],"pr":"e6d15dddaafc94d4c0cb37c12b62faa88b3a7da2cd1f1663e47bca901622efa0"}