{"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":"Data storage and verification method: On-chain expansion refers to the deployment of data and logic on the blockchain, which is verified and stored through consensus algorithms. Off-chain expansion refers to the deployment of data and logic in traditional databases or systems outside the blockchain, which do not directly participate in the  consensus and storage process of the blockchain."}]}],"pr":"dbe111ae5d6f6dc4b697af6ffe4fbf6f93d11272058cbc96a24d4653ca233d0b"}