{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the types of consensus mechanisms in blockchain and what are their characteristics?","a":"Proof of Stake (PoS): The PoS mechanism selects the miner for the next block based on the amount and time of holding tokens. Miners who hold more tokens and have held them for a longer period of time have a  higher chance of being selected. PoS has the advantages of lower energy consumption and faster transaction speeds compared to PoW, but its decentralization and security levels may be lower."}]}],"pr":"3ce21ffe7d51da57962eeac33ac83471a0575a78fb946155c23a855e907cbebd"}