{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the differences between off-chain expansion and on-chain expansion of blockchain?","a":"Consensus and security: Off-chain expansion does not require verification by consensus algorithms, so it does not ensure the consistency and correctness of data, and may have higher security risks.  On-chain expansion undergoes verification by consensus algorithms to ensure the consistency and correctness of data, thus achieving the effect of distributed transactions."}]}],"pr":"1684c44d60867214db4dd3048c00750349e7a527ef72ae80ed4c40d643342674"}